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shader_language.cpp

shader_language.cpp 235 KB
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
  1. /*************************************************************************/
    2. 

  2. /*  shader_language.cpp                                                  */
    3. 

  3. /*************************************************************************/
    4. 

  4. /*                       This file is part of:                           */
    5. 

  5. /*                           GODOT ENGINE                                */
    6. 

  6. /*                      https://godotengine.org                          */
    7. 

  7. /*************************************************************************/
    8. 

  8. /* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur.                 */
    9. 

  9. /* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md).   */
    10. 

  10. /*                                                                       */
    11. 

  11. /* Permission is hereby granted, free of charge, to any person obtaining */
    12. 

  12. /* a copy of this software and associated documentation files (the       */
    13. 

  13. /* "Software"), to deal in the Software without restriction, including   */
    14. 

  14. /* without limitation the rights to use, copy, modify, merge, publish,   */
    15. 

  15. /* distribute, sublicense, and/or sell copies of the Software, and to    */
    16. 

  16. /* permit persons to whom the Software is furnished to do so, subject to */
    17. 

  17. /* the following conditions:                                             */
    18. 

  18. /*                                                                       */
    19. 

  19. /* The above copyright notice and this permission notice shall be        */
    20. 

  20. /* included in all copies or substantial portions of the Software.       */
    21. 

  21. /*                                                                       */
    22. 

  22. /* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
    23. 

  23. /* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
    24. 

  24. /* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
    25. 

  25. /* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
    26. 

  26. /* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
    27. 

  27. /* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
    28. 

  28. /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
    29. 

  29. /*************************************************************************/
    30. 

  30. 

  31. #include "shader_language.h"
    32. 

  32. #include "core/os/os.h"
    33. 

  33. #include "core/print_string.h"
    34. 

  34. #include "servers/rendering_server.h"
    35. 

  35. 

  36. static bool _is_text_char(char32_t c) {
    37. 

  37. 	return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') || (c >= '0' && c <= '9') || c == '_';
    38. 

  38. }
    39. 

  39. 

  40. static bool _is_number(char32_t c) {
    41. 

  41. 	return (c >= '0' && c <= '9');
    42. 

  42. }
    43. 

  43. 

  44. static bool _is_hex(char32_t c) {
    45. 

  45. 	return (c >= '0' && c <= '9') || (c >= 'a' && c <= 'f') || (c >= 'A' && c <= 'F');
    46. 

  46. }
    47. 

  47. 

  48. String ShaderLanguage::get_operator_text(Operator p_op) {
    49. 

  49. 	static const char *op_names[OP_MAX] = { "==",
    50. 

  50. 		"!=",
    51. 

  51. 		"<",
    52. 

  52. 		"<=",
    53. 

  53. 		">",
    54. 

  54. 		">=",
    55. 

  55. 		"&&",
    56. 

  56. 		"||",
    57. 

  57. 		"!",
    58. 

  58. 		"-",
    59. 

  59. 		"+",
    60. 

  60. 		"-",
    61. 

  61. 		"*",
    62. 

  62. 		"/",
    63. 

  63. 		"%",
    64. 

  64. 		"<<",
    65. 

  65. 		">>",
    66. 

  66. 		"=",
    67. 

  67. 		"+=",
    68. 

  68. 		"-=",
    69. 

  69. 		"*=",
    70. 

  70. 		"/=",
    71. 

  71. 		"%=",
    72. 

  72. 		"<<=",
    73. 

  73. 		">>=",
    74. 

  74. 		"&=",
    75. 

  75. 		"|=",
    76. 

  76. 		"^=",
    77. 

  77. 		"&",
    78. 

  78. 		"|",
    79. 

  79. 		"^",
    80. 

  80. 		"~",
    81. 

  81. 		"++",
    82. 

  82. 		"--",
    83. 

  83. 		"?",
    84. 

  84. 		":",
    85. 

  85. 		"++",
    86. 

  86. 		"--",
    87. 

  87. 		"()",
    88. 

  88. 		"construct",
    89. 

  89. 		"index" };
    90. 

  90. 

  91. 	return op_names[p_op];
    92. 

  92. }
    93. 

  93. 

  94. const char *ShaderLanguage::token_names[TK_MAX] = {
    95. 

  95. 	"EMPTY",
    96. 

  96. 	"IDENTIFIER",
    97. 

  97. 	"TRUE",
    98. 

  98. 	"FALSE",
    99. 

  99. 	"REAL_CONSTANT",
    100. 

  100. 	"INT_CONSTANT",
    101. 

  101. 	"TYPE_VOID",
    102. 

  102. 	"TYPE_BOOL",
    103. 

  103. 	"TYPE_BVEC2",
    104. 

  104. 	"TYPE_BVEC3",
    105. 

  105. 	"TYPE_BVEC4",
    106. 

  106. 	"TYPE_INT",
    107. 

  107. 	"TYPE_IVEC2",
    108. 

  108. 	"TYPE_IVEC3",
    109. 

  109. 	"TYPE_IVEC4",
    110. 

  110. 	"TYPE_UINT",
    111. 

  111. 	"TYPE_UVEC2",
    112. 

  112. 	"TYPE_UVEC3",
    113. 

  113. 	"TYPE_UVEC4",
    114. 

  114. 	"TYPE_FLOAT",
    115. 

  115. 	"TYPE_VEC2",
    116. 

  116. 	"TYPE_VEC3",
    117. 

  117. 	"TYPE_VEC4",
    118. 

  118. 	"TYPE_MAT2",
    119. 

  119. 	"TYPE_MAT3",
    120. 

  120. 	"TYPE_MAT4",
    121. 

  121. 	"TYPE_SAMPLER2D",
    122. 

  122. 	"TYPE_ISAMPLER2D",
    123. 

  123. 	"TYPE_USAMPLER2D",
    124. 

  124. 	"TYPE_SAMPLER2DARRAY",
    125. 

  125. 	"TYPE_ISAMPLER2DARRAY",
    126. 

  126. 	"TYPE_USAMPLER2DARRAY",
    127. 

  127. 	"TYPE_SAMPLER3D",
    128. 

  128. 	"TYPE_ISAMPLER3D",
    129. 

  129. 	"TYPE_USAMPLER3D",
    130. 

  130. 	"TYPE_SAMPLERCUBE",
    131. 

  131. 	"TYPE_SAMPLERCUBEARRAY",
    132. 

  132. 	"INTERPOLATION_FLAT",
    133. 

  133. 	"INTERPOLATION_SMOOTH",
    134. 

  134. 	"CONST",
    135. 

  135. 	"PRECISION_LOW",
    136. 

  136. 	"PRECISION_MID",
    137. 

  137. 	"PRECISION_HIGH",
    138. 

  138. 	"OP_EQUAL",
    139. 

  139. 	"OP_NOT_EQUAL",
    140. 

  140. 	"OP_LESS",
    141. 

  141. 	"OP_LESS_EQUAL",
    142. 

  142. 	"OP_GREATER",
    143. 

  143. 	"OP_GREATER_EQUAL",
    144. 

  144. 	"OP_AND",
    145. 

  145. 	"OP_OR",
    146. 

  146. 	"OP_NOT",
    147. 

  147. 	"OP_ADD",
    148. 

  148. 	"OP_SUB",
    149. 

  149. 	"OP_MUL",
    150. 

  150. 	"OP_DIV",
    151. 

  151. 	"OP_MOD",
    152. 

  152. 	"OP_SHIFT_LEFT",
    153. 

  153. 	"OP_SHIFT_RIGHT",
    154. 

  154. 	"OP_ASSIGN",
    155. 

  155. 	"OP_ASSIGN_ADD",
    156. 

  156. 	"OP_ASSIGN_SUB",
    157. 

  157. 	"OP_ASSIGN_MUL",
    158. 

  158. 	"OP_ASSIGN_DIV",
    159. 

  159. 	"OP_ASSIGN_MOD",
    160. 

  160. 	"OP_ASSIGN_SHIFT_LEFT",
    161. 

  161. 	"OP_ASSIGN_SHIFT_RIGHT",
    162. 

  162. 	"OP_ASSIGN_BIT_AND",
    163. 

  163. 	"OP_ASSIGN_BIT_OR",
    164. 

  164. 	"OP_ASSIGN_BIT_XOR",
    165. 

  165. 	"OP_BIT_AND",
    166. 

  166. 	"OP_BIT_OR",
    167. 

  167. 	"OP_BIT_XOR",
    168. 

  168. 	"OP_BIT_INVERT",
    169. 

  169. 	"OP_INCREMENT",
    170. 

  170. 	"OP_DECREMENT",
    171. 

  171. 	"CF_IF",
    172. 

  172. 	"CF_ELSE",
    173. 

  173. 	"CF_FOR",
    174. 

  174. 	"CF_WHILE",
    175. 

  175. 	"CF_DO",
    176. 

  176. 	"CF_SWITCH",
    177. 

  177. 	"CF_CASE",
    178. 

  178. 	"CF_BREAK",
    179. 

  179. 	"CF_CONTINUE",
    180. 

  180. 	"CF_RETURN",
    181. 

  181. 	"CF_DISCARD",
    182. 

  182. 	"BRACKET_OPEN",
    183. 

  183. 	"BRACKET_CLOSE",
    184. 

  184. 	"CURLY_BRACKET_OPEN",
    185. 

  185. 	"CURLY_BRACKET_CLOSE",
    186. 

  186. 	"PARENTHESIS_OPEN",
    187. 

  187. 	"PARENTHESIS_CLOSE",
    188. 

  188. 	"QUESTION",
    189. 

  189. 	"COMMA",
    190. 

  190. 	"COLON",
    191. 

  191. 	"SEMICOLON",
    192. 

  192. 	"PERIOD",
    193. 

  193. 	"UNIFORM",
    194. 

  194. 	"INSTANCE",
    195. 

  195. 	"GLOBAL",
    196. 

  196. 	"VARYING",
    197. 

  197. 	"IN",
    198. 

  198. 	"OUT",
    199. 

  199. 	"INOUT",
    200. 

  200. 	"RENDER_MODE",
    201. 

  201. 	"HINT_WHITE_TEXTURE",
    202. 

  202. 	"HINT_BLACK_TEXTURE",
    203. 

  203. 	"HINT_NORMAL_TEXTURE",
    204. 

  204. 	"HINT_ANISO_TEXTURE",
    205. 

  205. 	"HINT_ALBEDO_TEXTURE",
    206. 

  206. 	"HINT_BLACK_ALBEDO_TEXTURE",
    207. 

  207. 	"HINT_COLOR",
    208. 

  208. 	"HINT_RANGE",
    209. 

  209. 	"HINT_INSTANCE_INDEX",
    210. 

  210. 	"FILTER_NEAREST",
    211. 

  211. 	"FILTER_LINEAR",
    212. 

  212. 	"FILTER_NEAREST_MIPMAP",
    213. 

  213. 	"FILTER_LINEAR_MIPMAP",
    214. 

  214. 	"FILTER_NEAREST_MIPMAP_ANISO",
    215. 

  215. 	"FILTER_LINEAR_MIPMAP_ANISO",
    216. 

  216. 	"REPEAT_ENABLE",
    217. 

  217. 	"REPEAT_DISABLE",
    218. 

  218. 	"SHADER_TYPE",
    219. 

  219. 	"CURSOR",
    220. 

  220. 	"ERROR",
    221. 

  221. 	"EOF",
    222. 

  222. };
    223. 

  223. 

  224. String ShaderLanguage::get_token_text(Token p_token) {
    225. 

  225. 	String name = token_names[p_token.type];
    226. 

  226. 	if (p_token.type == TK_INT_CONSTANT || p_token.type == TK_REAL_CONSTANT) {
    227. 

  227. 		name += "(" + rtos(p_token.constant) + ")";
    228. 

  228. 	} else if (p_token.type == TK_IDENTIFIER) {
    229. 

  229. 		name += "(" + String(p_token.text) + ")";
    230. 

  230. 	} else if (p_token.type == TK_ERROR) {
    231. 

  231. 		name += "(" + String(p_token.text) + ")";
    232. 

  232. 	}
    233. 

  233. 

  234. 	return name;
    235. 

  235. }
    236. 

  236. 

  237. ShaderLanguage::Token ShaderLanguage::_make_token(TokenType p_type, const StringName &p_text) {
    238. 

  238. 	Token tk;
    239. 

  239. 	tk.type = p_type;
    240. 

  240. 	tk.text = p_text;
    241. 

  241. 	tk.line = tk_line;
    242. 

  242. 	if (tk.type == TK_ERROR) {
    243. 

  243. 		_set_error(p_text);
    244. 

  244. 	}
    245. 

  245. 	return tk;
    246. 

  246. }
    247. 

  247. 

  248. const ShaderLanguage::KeyWord ShaderLanguage::keyword_list[] = {
    249. 

  249. 	{ TK_TRUE, "true" },
    250. 

  250. 	{ TK_FALSE, "false" },
    251. 

  251. 	{ TK_TYPE_VOID, "void" },
    252. 

  252. 	{ TK_TYPE_BOOL, "bool" },
    253. 

  253. 	{ TK_TYPE_BVEC2, "bvec2" },
    254. 

  254. 	{ TK_TYPE_BVEC3, "bvec3" },
    255. 

  255. 	{ TK_TYPE_BVEC4, "bvec4" },
    256. 

  256. 	{ TK_TYPE_INT, "int" },
    257. 

  257. 	{ TK_TYPE_IVEC2, "ivec2" },
    258. 

  258. 	{ TK_TYPE_IVEC3, "ivec3" },
    259. 

  259. 	{ TK_TYPE_IVEC4, "ivec4" },
    260. 

  260. 	{ TK_TYPE_UINT, "uint" },
    261. 

  261. 	{ TK_TYPE_UVEC2, "uvec2" },
    262. 

  262. 	{ TK_TYPE_UVEC3, "uvec3" },
    263. 

  263. 	{ TK_TYPE_UVEC4, "uvec4" },
    264. 

  264. 	{ TK_TYPE_FLOAT, "float" },
    265. 

  265. 	{ TK_TYPE_VEC2, "vec2" },
    266. 

  266. 	{ TK_TYPE_VEC3, "vec3" },
    267. 

  267. 	{ TK_TYPE_VEC4, "vec4" },
    268. 

  268. 	{ TK_TYPE_MAT2, "mat2" },
    269. 

  269. 	{ TK_TYPE_MAT3, "mat3" },
    270. 

  270. 	{ TK_TYPE_MAT4, "mat4" },
    271. 

  271. 	{ TK_TYPE_SAMPLER2D, "sampler2D" },
    272. 

  272. 	{ TK_TYPE_ISAMPLER2D, "isampler2D" },
    273. 

  273. 	{ TK_TYPE_USAMPLER2D, "usampler2D" },
    274. 

  274. 	{ TK_TYPE_SAMPLER2DARRAY, "sampler2DArray" },
    275. 

  275. 	{ TK_TYPE_ISAMPLER2DARRAY, "isampler2DArray" },
    276. 

  276. 	{ TK_TYPE_USAMPLER2DARRAY, "usampler2DArray" },
    277. 

  277. 	{ TK_TYPE_SAMPLER3D, "sampler3D" },
    278. 

  278. 	{ TK_TYPE_ISAMPLER3D, "isampler3D" },
    279. 

  279. 	{ TK_TYPE_USAMPLER3D, "usampler3D" },
    280. 

  280. 	{ TK_TYPE_SAMPLERCUBE, "samplerCube" },
    281. 

  281. 	{ TK_TYPE_SAMPLERCUBEARRAY, "samplerCubeArray" },
    282. 

  282. 	{ TK_INTERPOLATION_FLAT, "flat" },
    283. 

  283. 	{ TK_INTERPOLATION_SMOOTH, "smooth" },
    284. 

  284. 	{ TK_CONST, "const" },
    285. 

  285. 	{ TK_STRUCT, "struct" },
    286. 

  286. 	{ TK_PRECISION_LOW, "lowp" },
    287. 

  287. 	{ TK_PRECISION_MID, "mediump" },
    288. 

  288. 	{ TK_PRECISION_HIGH, "highp" },
    289. 

  289. 	{ TK_CF_IF, "if" },
    290. 

  290. 	{ TK_CF_ELSE, "else" },
    291. 

  291. 	{ TK_CF_FOR, "for" },
    292. 

  292. 	{ TK_CF_WHILE, "while" },
    293. 

  293. 	{ TK_CF_DO, "do" },
    294. 

  294. 	{ TK_CF_SWITCH, "switch" },
    295. 

  295. 	{ TK_CF_CASE, "case" },
    296. 

  296. 	{ TK_CF_DEFAULT, "default" },
    297. 

  297. 	{ TK_CF_BREAK, "break" },
    298. 

  298. 	{ TK_CF_CONTINUE, "continue" },
    299. 

  299. 	{ TK_CF_RETURN, "return" },
    300. 

  300. 	{ TK_CF_DISCARD, "discard" },
    301. 

  301. 	{ TK_UNIFORM, "uniform" },
    302. 

  302. 	{ TK_INSTANCE, "instance" },
    303. 

  303. 	{ TK_GLOBAL, "global" },
    304. 

  304. 	{ TK_VARYING, "varying" },
    305. 

  305. 	{ TK_ARG_IN, "in" },
    306. 

  306. 	{ TK_ARG_OUT, "out" },
    307. 

  307. 	{ TK_ARG_INOUT, "inout" },
    308. 

  308. 	{ TK_RENDER_MODE, "render_mode" },
    309. 

  309. 	{ TK_HINT_WHITE_TEXTURE, "hint_white" },
    310. 

  310. 	{ TK_HINT_BLACK_TEXTURE, "hint_black" },
    311. 

  311. 	{ TK_HINT_NORMAL_TEXTURE, "hint_normal" },
    312. 

  312. 	{ TK_HINT_ROUGHNESS_NORMAL_TEXTURE, "hint_roughness_normal" },
    313. 

  313. 	{ TK_HINT_ROUGHNESS_R, "hint_roughness_r" },
    314. 

  314. 	{ TK_HINT_ROUGHNESS_G, "hint_roughness_g" },
    315. 

  315. 	{ TK_HINT_ROUGHNESS_B, "hint_roughness_b" },
    316. 

  316. 	{ TK_HINT_ROUGHNESS_A, "hint_roughness_a" },
    317. 

  317. 	{ TK_HINT_ROUGHNESS_GRAY, "hint_roughness_gray" },
    318. 

  318. 	{ TK_HINT_ANISO_TEXTURE, "hint_aniso" },
    319. 

  319. 	{ TK_HINT_ALBEDO_TEXTURE, "hint_albedo" },
    320. 

  320. 	{ TK_HINT_BLACK_ALBEDO_TEXTURE, "hint_black_albedo" },
    321. 

  321. 	{ TK_HINT_COLOR, "hint_color" },
    322. 

  322. 	{ TK_HINT_RANGE, "hint_range" },
    323. 

  323. 	{ TK_HINT_INSTANCE_INDEX, "instance_index" },
    324. 

  324. 	{ TK_FILTER_NEAREST, "filter_nearest" },
    325. 

  325. 	{ TK_FILTER_LINEAR, "filter_linear" },
    326. 

  326. 	{ TK_FILTER_NEAREST_MIPMAP, "filter_nearest_mipmap" },
    327. 

  327. 	{ TK_FILTER_LINEAR_MIPMAP, "filter_linear_mipmap" },
    328. 

  328. 	{ TK_FILTER_NEAREST_MIPMAP_ANISO, "filter_nearest_mipmap_aniso" },
    329. 

  329. 	{ TK_FILTER_LINEAR_MIPMAP_ANISO, "filter_linear_mipmap_aniso" },
    330. 

  330. 	{ TK_REPEAT_ENABLE, "repeat_enable" },
    331. 

  331. 	{ TK_REPEAT_DISABLE, "repeat_disable" },
    332. 

  332. 	{ TK_SHADER_TYPE, "shader_type" },
    333. 

  333. 	{ TK_ERROR, nullptr }
    334. 

  334. };
    335. 

  335. 

  336. ShaderLanguage::Token ShaderLanguage::_get_token() {
    337. 

  337. #define GETCHAR(m_idx) (((char_idx + m_idx) < code.length()) ? code[char_idx + m_idx] : char32_t(0))
    338. 

  338. 

  339. 	while (true) {
    340. 

  340. 		char_idx++;
    341. 

  341. 		switch (GETCHAR(-1)) {
    342. 

  342. 			case 0:
    343. 

  343. 				return _make_token(TK_EOF);
    344. 

  344. 			case 0xFFFF:
    345. 

  345. 				return _make_token(TK_CURSOR); //for completion
    346. 

  346. 			case '\t':
    347. 

  347. 			case '\r':
    348. 

  348. 			case ' ':
    349. 

  349. 				continue;
    350. 

  350. 			case '\n':
    351. 

  351. 				tk_line++;
    352. 

  352. 				continue;
    353. 

  353. 			case '/': {
    354. 

  354. 				switch (GETCHAR(0)) {
    355. 

  355. 					case '*': { // block comment
    356. 

  356. 

  357. 						char_idx++;
    358. 

  358. 						while (true) {
    359. 

  359. 							if (GETCHAR(0) == 0) {
    360. 

  360. 								return _make_token(TK_EOF);
    361. 

  361. 							}
    362. 

  362. 							if (GETCHAR(0) == '*' && GETCHAR(1) == '/') {
    363. 

  363. 								char_idx += 2;
    364. 

  364. 								break;
    365. 

  365. 							} else if (GETCHAR(0) == '\n') {
    366. 

  366. 								tk_line++;
    367. 

  367. 							}
    368. 

  368. 

  369. 							char_idx++;
    370. 

  370. 						}
    371. 

  371. 

  372. 					} break;
    373. 

  373. 					case '/': { // line comment skip
    374. 

  374. 

  375. 						while (true) {
    376. 

  376. 							if (GETCHAR(0) == '\n') {
    377. 

  377. 								tk_line++;
    378. 

  378. 								char_idx++;
    379. 

  379. 								break;
    380. 

  380. 							}
    381. 

  381. 							if (GETCHAR(0) == 0) {
    382. 

  382. 								return _make_token(TK_EOF);
    383. 

  383. 							}
    384. 

  384. 							char_idx++;
    385. 

  385. 						}
    386. 

  386. 

  387. 					} break;
    388. 

  388. 					case '=': { // diveq
    389. 

  389. 

  390. 						char_idx++;
    391. 

  391. 						return _make_token(TK_OP_ASSIGN_DIV);
    392. 

  392. 

  393. 					} break;
    394. 

  394. 					default:
    395. 

  395. 						return _make_token(TK_OP_DIV);
    396. 

  396. 				}
    397. 

  397. 

  398. 				continue; //a comment, continue to next token
    399. 

  399. 			} break;
    400. 

  400. 			case '=': {
    401. 

  401. 				if (GETCHAR(0) == '=') {
    402. 

  402. 					char_idx++;
    403. 

  403. 					return _make_token(TK_OP_EQUAL);
    404. 

  404. 				}
    405. 

  405. 

  406. 				return _make_token(TK_OP_ASSIGN);
    407. 

  407. 

  408. 			} break;
    409. 

  409. 			case '<': {
    410. 

  410. 				if (GETCHAR(0) == '=') {
    411. 

  411. 					char_idx++;
    412. 

  412. 					return _make_token(TK_OP_LESS_EQUAL);
    413. 

  413. 				} else if (GETCHAR(0) == '<') {
    414. 

  414. 					char_idx++;
    415. 

  415. 					if (GETCHAR(0) == '=') {
    416. 

  416. 						char_idx++;
    417. 

  417. 						return _make_token(TK_OP_ASSIGN_SHIFT_LEFT);
    418. 

  418. 					}
    419. 

  419. 

  420. 					return _make_token(TK_OP_SHIFT_LEFT);
    421. 

  421. 				}
    422. 

  422. 

  423. 				return _make_token(TK_OP_LESS);
    424. 

  424. 

  425. 			} break;
    426. 

  426. 			case '>': {
    427. 

  427. 				if (GETCHAR(0) == '=') {
    428. 

  428. 					char_idx++;
    429. 

  429. 					return _make_token(TK_OP_GREATER_EQUAL);
    430. 

  430. 				} else if (GETCHAR(0) == '>') {
    431. 

  431. 					char_idx++;
    432. 

  432. 					if (GETCHAR(0) == '=') {
    433. 

  433. 						char_idx++;
    434. 

  434. 						return _make_token(TK_OP_ASSIGN_SHIFT_RIGHT);
    435. 

  435. 					}
    436. 

  436. 

  437. 					return _make_token(TK_OP_SHIFT_RIGHT);
    438. 

  438. 				}
    439. 

  439. 

  440. 				return _make_token(TK_OP_GREATER);
    441. 

  441. 

  442. 			} break;
    443. 

  443. 			case '!': {
    444. 

  444. 				if (GETCHAR(0) == '=') {
    445. 

  445. 					char_idx++;
    446. 

  446. 					return _make_token(TK_OP_NOT_EQUAL);
    447. 

  447. 				}
    448. 

  448. 

  449. 				return _make_token(TK_OP_NOT);
    450. 

  450. 

  451. 			} break;
    452. 

  452. 			//case '"' //string - no strings in shader
    453. 

  453. 			//case '\'' //string - no strings in shader
    454. 

  454. 			case '{':
    455. 

  455. 				return _make_token(TK_CURLY_BRACKET_OPEN);
    456. 

  456. 			case '}':
    457. 

  457. 				return _make_token(TK_CURLY_BRACKET_CLOSE);
    458. 

  458. 			case '[':
    459. 

  459. 				return _make_token(TK_BRACKET_OPEN);
    460. 

  460. 			case ']':
    461. 

  461. 				return _make_token(TK_BRACKET_CLOSE);
    462. 

  462. 			case '(':
    463. 

  463. 				return _make_token(TK_PARENTHESIS_OPEN);
    464. 

  464. 			case ')':
    465. 

  465. 				return _make_token(TK_PARENTHESIS_CLOSE);
    466. 

  466. 			case ',':
    467. 

  467. 				return _make_token(TK_COMMA);
    468. 

  468. 			case ';':
    469. 

  469. 				return _make_token(TK_SEMICOLON);
    470. 

  470. 			case '?':
    471. 

  471. 				return _make_token(TK_QUESTION);
    472. 

  472. 			case ':':
    473. 

  473. 				return _make_token(TK_COLON);
    474. 

  474. 			case '^':
    475. 

  475. 				return _make_token(TK_OP_BIT_XOR);
    476. 

  476. 			case '~':
    477. 

  477. 				return _make_token(TK_OP_BIT_INVERT);
    478. 

  478. 			case '&': {
    479. 

  479. 				if (GETCHAR(0) == '=') {
    480. 

  480. 					char_idx++;
    481. 

  481. 					return _make_token(TK_OP_ASSIGN_BIT_AND);
    482. 

  482. 				} else if (GETCHAR(0) == '&') {
    483. 

  483. 					char_idx++;
    484. 

  484. 					return _make_token(TK_OP_AND);
    485. 

  485. 				}
    486. 

  486. 				return _make_token(TK_OP_BIT_AND);
    487. 

  487. 			} break;
    488. 

  488. 			case '|': {
    489. 

  489. 				if (GETCHAR(0) == '=') {
    490. 

  490. 					char_idx++;
    491. 

  491. 					return _make_token(TK_OP_ASSIGN_BIT_OR);
    492. 

  492. 				} else if (GETCHAR(0) == '|') {
    493. 

  493. 					char_idx++;
    494. 

  494. 					return _make_token(TK_OP_OR);
    495. 

  495. 				}
    496. 

  496. 				return _make_token(TK_OP_BIT_OR);
    497. 

  497. 

  498. 			} break;
    499. 

  499. 			case '*': {
    500. 

  500. 				if (GETCHAR(0) == '=') {
    501. 

  501. 					char_idx++;
    502. 

  502. 					return _make_token(TK_OP_ASSIGN_MUL);
    503. 

  503. 				}
    504. 

  504. 				return _make_token(TK_OP_MUL);
    505. 

  505. 			} break;
    506. 

  506. 			case '+': {
    507. 

  507. 				if (GETCHAR(0) == '=') {
    508. 

  508. 					char_idx++;
    509. 

  509. 					return _make_token(TK_OP_ASSIGN_ADD);
    510. 

  510. 				} else if (GETCHAR(0) == '+') {
    511. 

  511. 					char_idx++;
    512. 

  512. 					return _make_token(TK_OP_INCREMENT);
    513. 

  513. 				}
    514. 

  514. 

  515. 				return _make_token(TK_OP_ADD);
    516. 

  516. 			} break;
    517. 

  517. 			case '-': {
    518. 

  518. 				if (GETCHAR(0) == '=') {
    519. 

  519. 					char_idx++;
    520. 

  520. 					return _make_token(TK_OP_ASSIGN_SUB);
    521. 

  521. 				} else if (GETCHAR(0) == '-') {
    522. 

  522. 					char_idx++;
    523. 

  523. 					return _make_token(TK_OP_DECREMENT);
    524. 

  524. 				}
    525. 

  525. 

  526. 				return _make_token(TK_OP_SUB);
    527. 

  527. 			} break;
    528. 

  528. 			case '%': {
    529. 

  529. 				if (GETCHAR(0) == '=') {
    530. 

  530. 					char_idx++;
    531. 

  531. 					return _make_token(TK_OP_ASSIGN_MOD);
    532. 

  532. 				}
    533. 

  533. 

  534. 				return _make_token(TK_OP_MOD);
    535. 

  535. 			} break;
    536. 

  536. 			default: {
    537. 

  537. 				char_idx--; //go back one, since we have no idea what this is
    538. 

  538. 

  539. 				if (_is_number(GETCHAR(0)) || (GETCHAR(0) == '.' && _is_number(GETCHAR(1)))) {
    540. 

  540. 					// parse number
    541. 

  541. 					bool period_found = false;
    542. 

  542. 					bool exponent_found = false;
    543. 

  543. 					bool hexa_found = false;
    544. 

  544. 					bool sign_found = false;
    545. 

  545. 					bool float_suffix_found = false;
    546. 

  546. 

  547. 					String str;
    548. 

  548. 					int i = 0;
    549. 

  549. 

  550. 					while (true) {
    551. 

  551. 						if (GETCHAR(i) == '.') {
    552. 

  552. 							if (period_found || exponent_found || hexa_found || float_suffix_found) {
    553. 

  553. 								return _make_token(TK_ERROR, "Invalid numeric constant");
    554. 

  554. 							}
    555. 

  555. 							period_found = true;
    556. 

  556. 						} else if (GETCHAR(i) == 'x') {
    557. 

  557. 							if (hexa_found || str.length() != 1 || str[0] != '0') {
    558. 

  558. 								return _make_token(TK_ERROR, "Invalid numeric constant");
    559. 

  559. 							}
    560. 

  560. 							hexa_found = true;
    561. 

  561. 						} else if (GETCHAR(i) == 'e') {
    562. 

  562. 							if (hexa_found || exponent_found || float_suffix_found) {
    563. 

  563. 								return _make_token(TK_ERROR, "Invalid numeric constant");
    564. 

  564. 							}
    565. 

  565. 							exponent_found = true;
    566. 

  566. 						} else if (GETCHAR(i) == 'f') {
    567. 

  567. 							if (hexa_found || exponent_found) {
    568. 

  568. 								return _make_token(TK_ERROR, "Invalid numeric constant");
    569. 

  569. 							}
    570. 

  570. 							float_suffix_found = true;
    571. 

  571. 						} else if (_is_number(GETCHAR(i))) {
    572. 

  572. 							if (float_suffix_found) {
    573. 

  573. 								return _make_token(TK_ERROR, "Invalid numeric constant");
    574. 

  574. 							}
    575. 

  575. 						} else if (hexa_found && _is_hex(GETCHAR(i))) {
    576. 

  576. 						} else if ((GETCHAR(i) == '-' || GETCHAR(i) == '+') && exponent_found) {
    577. 

  577. 							if (sign_found) {
    578. 

  578. 								return _make_token(TK_ERROR, "Invalid numeric constant");
    579. 

  579. 							}
    580. 

  580. 							sign_found = true;
    581. 

  581. 						} else {
    582. 

  582. 							break;
    583. 

  583. 						}
    584. 

  584. 

  585. 						str += char32_t(GETCHAR(i));
    586. 

  586. 						i++;
    587. 

  587. 					}
    588. 

  588. 

  589. 					char32_t last_char = str[str.length() - 1];
    590. 

  590. 

  591. 					if (hexa_found) {
    592. 

  592. 						//integer(hex)
    593. 

  593. 						if (str.size() > 11 || !str.is_valid_hex_number(true)) { // > 0xFFFFFFFF
    594. 

  594. 							return _make_token(TK_ERROR, "Invalid (hexadecimal) numeric constant");
    595. 

  595. 						}
    596. 

  596. 					} else if (period_found || exponent_found || float_suffix_found) {
    597. 

  597. 						//floats
    598. 

  598. 						if (period_found) {
    599. 

  599. 							if (float_suffix_found) {
    600. 

  600. 								//checks for eg "1.f" or "1.99f" notations
    601. 

  601. 								if (last_char != 'f') {
    602. 

  602. 									return _make_token(TK_ERROR, "Invalid (float) numeric constant");
    603. 

  603. 								}
    604. 

  604. 							} else {
    605. 

  605. 								//checks for eg. "1." or "1.99" notations
    606. 

  606. 								if (last_char != '.' && !_is_number(last_char)) {
    607. 

  607. 									return _make_token(TK_ERROR, "Invalid (float) numeric constant");
    608. 

  608. 								}
    609. 

  609. 							}
    610. 

  610. 						} else if (float_suffix_found) {
    611. 

  611. 							// if no period found the float suffix must be the last character, like in "2f" for "2.0"
    612. 

  612. 							if (last_char != 'f') {
    613. 

  613. 								return _make_token(TK_ERROR, "Invalid (float) numeric constant");
    614. 

  614. 							}
    615. 

  615. 						}
    616. 

  616. 

  617. 						if (float_suffix_found) {
    618. 

  618. 							//strip the suffix
    619. 

  619. 							str = str.left(str.length() - 1);
    620. 

  620. 							//compensate reading cursor position
    621. 

  621. 							char_idx += 1;
    622. 

  622. 						}
    623. 

  623. 

  624. 						if (!str.is_valid_float()) {
    625. 

  625. 							return _make_token(TK_ERROR, "Invalid (float) numeric constant");
    626. 

  626. 						}
    627. 

  627. 					} else {
    628. 

  628. 						//integers
    629. 

  629. 						if (!_is_number(last_char)) {
    630. 

  630. 							return _make_token(TK_ERROR, "Invalid (integer) numeric constant");
    631. 

  631. 						}
    632. 

  632. 						if (!str.is_valid_integer()) {
    633. 

  633. 							return _make_token(TK_ERROR, "Invalid numeric constant");
    634. 

  634. 						}
    635. 

  635. 					}
    636. 

  636. 

  637. 					char_idx += str.length();
    638. 

  638. 					Token tk;
    639. 

  639. 					if (period_found || exponent_found || float_suffix_found) {
    640. 

  640. 						tk.type = TK_REAL_CONSTANT;
    641. 

  641. 					} else {
    642. 

  642. 						tk.type = TK_INT_CONSTANT;
    643. 

  643. 					}
    644. 

  644. 

  645. 					if (hexa_found) {
    646. 

  646. 						tk.constant = (double)str.hex_to_int(true);
    647. 

  647. 					} else {
    648. 

  648. 						tk.constant = str.to_float();
    649. 

  649. 					}
    650. 

  650. 					tk.line = tk_line;
    651. 

  651. 

  652. 					return tk;
    653. 

  653. 				}
    654. 

  654. 

  655. 				if (GETCHAR(0) == '.') {
    656. 

  656. 					//parse period
    657. 

  657. 					char_idx++;
    658. 

  658. 					return _make_token(TK_PERIOD);
    659. 

  659. 				}
    660. 

  660. 

  661. 				if (_is_text_char(GETCHAR(0))) {
    662. 

  662. 					// parse identifier
    663. 

  663. 					String str;
    664. 

  664. 

  665. 					while (_is_text_char(GETCHAR(0))) {
    666. 

  666. 						str += char32_t(GETCHAR(0));
    667. 

  667. 						char_idx++;
    668. 

  668. 					}
    669. 

  669. 

  670. 					//see if keyword
    671. 

  671. 					//should be converted to a static map
    672. 

  672. 					int idx = 0;
    673. 

  673. 

  674. 					while (keyword_list[idx].text) {
    675. 

  675. 						if (str == keyword_list[idx].text) {
    676. 

  676. 							return _make_token(keyword_list[idx].token);
    677. 

  677. 						}
    678. 

  678. 						idx++;
    679. 

  679. 					}
    680. 

  680. 

  681. 					str = str.replace("dus_", "_");
    682. 

  682. 

  683. 					return _make_token(TK_IDENTIFIER, str);
    684. 

  684. 				}
    685. 

  685. 

  686. 				if (GETCHAR(0) > 32) {
    687. 

  687. 					return _make_token(TK_ERROR, "Tokenizer: Unknown character #" + itos(GETCHAR(0)) + ": '" + String::chr(GETCHAR(0)) + "'");
    688. 

  688. 				} else {
    689. 

  689. 					return _make_token(TK_ERROR, "Tokenizer: Unknown character #" + itos(GETCHAR(0)));
    690. 

  690. 				}
    691. 

  691. 

  692. 			} break;
    693. 

  693. 		}
    694. 

  694. 	}
    695. 

  695. 	ERR_PRINT("BUG");
    696. 

  696. 	return Token();
    697. 

  697. 

  698. #undef GETCHAR
    699. 

  699. }
    700. 

  700. 

  701. String ShaderLanguage::token_debug(const String &p_code) {
    702. 

  702. 	clear();
    703. 

  703. 

  704. 	code = p_code;
    705. 

  705. 

  706. 	String output;
    707. 

  707. 

  708. 	Token tk = _get_token();
    709. 

  709. 	while (tk.type != TK_EOF && tk.type != TK_ERROR) {
    710. 

  710. 		output += itos(tk_line) + ": " + get_token_text(tk) + "\n";
    711. 

  711. 		tk = _get_token();
    712. 

  712. 	}
    713. 

  713. 

  714. 	return output;
    715. 

  715. }
    716. 

  716. 

  717. bool ShaderLanguage::is_token_variable_datatype(TokenType p_type) {
    718. 

  718. 	return (
    719. 

  719. 			p_type == TK_TYPE_VOID ||
    720. 

  720. 			p_type == TK_TYPE_BOOL ||
    721. 

  721. 			p_type == TK_TYPE_BVEC2 ||
    722. 

  722. 			p_type == TK_TYPE_BVEC3 ||
    723. 

  723. 			p_type == TK_TYPE_BVEC4 ||
    724. 

  724. 			p_type == TK_TYPE_INT ||
    725. 

  725. 			p_type == TK_TYPE_IVEC2 ||
    726. 

  726. 			p_type == TK_TYPE_IVEC3 ||
    727. 

  727. 			p_type == TK_TYPE_IVEC4 ||
    728. 

  728. 			p_type == TK_TYPE_UINT ||
    729. 

  729. 			p_type == TK_TYPE_UVEC2 ||
    730. 

  730. 			p_type == TK_TYPE_UVEC3 ||
    731. 

  731. 			p_type == TK_TYPE_UVEC4 ||
    732. 

  732. 			p_type == TK_TYPE_FLOAT ||
    733. 

  733. 			p_type == TK_TYPE_VEC2 ||
    734. 

  734. 			p_type == TK_TYPE_VEC3 ||
    735. 

  735. 			p_type == TK_TYPE_VEC4 ||
    736. 

  736. 			p_type == TK_TYPE_MAT2 ||
    737. 

  737. 			p_type == TK_TYPE_MAT3 ||
    738. 

  738. 			p_type == TK_TYPE_MAT4);
    739. 

  739. }
    740. 

  740. 

  741. bool ShaderLanguage::is_token_datatype(TokenType p_type) {
    742. 

  742. 	return (
    743. 

  743. 			p_type == TK_TYPE_VOID ||
    744. 

  744. 			p_type == TK_TYPE_BOOL ||
    745. 

  745. 			p_type == TK_TYPE_BVEC2 ||
    746. 

  746. 			p_type == TK_TYPE_BVEC3 ||
    747. 

  747. 			p_type == TK_TYPE_BVEC4 ||
    748. 

  748. 			p_type == TK_TYPE_INT ||
    749. 

  749. 			p_type == TK_TYPE_IVEC2 ||
    750. 

  750. 			p_type == TK_TYPE_IVEC3 ||
    751. 

  751. 			p_type == TK_TYPE_IVEC4 ||
    752. 

  752. 			p_type == TK_TYPE_UINT ||
    753. 

  753. 			p_type == TK_TYPE_UVEC2 ||
    754. 

  754. 			p_type == TK_TYPE_UVEC3 ||
    755. 

  755. 			p_type == TK_TYPE_UVEC4 ||
    756. 

  756. 			p_type == TK_TYPE_FLOAT ||
    757. 

  757. 			p_type == TK_TYPE_VEC2 ||
    758. 

  758. 			p_type == TK_TYPE_VEC3 ||
    759. 

  759. 			p_type == TK_TYPE_VEC4 ||
    760. 

  760. 			p_type == TK_TYPE_MAT2 ||
    761. 

  761. 			p_type == TK_TYPE_MAT3 ||
    762. 

  762. 			p_type == TK_TYPE_MAT4 ||
    763. 

  763. 			p_type == TK_TYPE_SAMPLER2D ||
    764. 

  764. 			p_type == TK_TYPE_ISAMPLER2D ||
    765. 

  765. 			p_type == TK_TYPE_USAMPLER2D ||
    766. 

  766. 			p_type == TK_TYPE_SAMPLER2DARRAY ||
    767. 

  767. 			p_type == TK_TYPE_ISAMPLER2DARRAY ||
    768. 

  768. 			p_type == TK_TYPE_USAMPLER2DARRAY ||
    769. 

  769. 			p_type == TK_TYPE_SAMPLER3D ||
    770. 

  770. 			p_type == TK_TYPE_ISAMPLER3D ||
    771. 

  771. 			p_type == TK_TYPE_USAMPLER3D ||
    772. 

  772. 			p_type == TK_TYPE_SAMPLERCUBE ||
    773. 

  773. 			p_type == TK_TYPE_SAMPLERCUBEARRAY);
    774. 

  774. }
    775. 

  775. 

  776. ShaderLanguage::DataType ShaderLanguage::get_token_datatype(TokenType p_type) {
    777. 

  777. 	return DataType(p_type - TK_TYPE_VOID);
    778. 

  778. }
    779. 

  779. 

  780. bool ShaderLanguage::is_token_interpolation(TokenType p_type) {
    781. 

  781. 	return (
    782. 

  782. 			p_type == TK_INTERPOLATION_FLAT ||
    783. 

  783. 			p_type == TK_INTERPOLATION_SMOOTH);
    784. 

  784. }
    785. 

  785. 

  786. ShaderLanguage::DataInterpolation ShaderLanguage::get_token_interpolation(TokenType p_type) {
    787. 

  787. 	if (p_type == TK_INTERPOLATION_FLAT) {
    788. 

  788. 		return INTERPOLATION_FLAT;
    789. 

  789. 	} else {
    790. 

  790. 		return INTERPOLATION_SMOOTH;
    791. 

  791. 	}
    792. 

  792. }
    793. 

  793. 

  794. bool ShaderLanguage::is_token_precision(TokenType p_type) {
    795. 

  795. 	return (
    796. 

  796. 			p_type == TK_PRECISION_LOW ||
    797. 

  797. 			p_type == TK_PRECISION_MID ||
    798. 

  798. 			p_type == TK_PRECISION_HIGH);
    799. 

  799. }
    800. 

  800. 

  801. ShaderLanguage::DataPrecision ShaderLanguage::get_token_precision(TokenType p_type) {
    802. 

  802. 	if (p_type == TK_PRECISION_LOW) {
    803. 

  803. 		return PRECISION_LOWP;
    804. 

  804. 	} else if (p_type == TK_PRECISION_HIGH) {
    805. 

  805. 		return PRECISION_HIGHP;
    806. 

  806. 	} else {
    807. 

  807. 		return PRECISION_MEDIUMP;
    808. 

  808. 	}
    809. 

  809. }
    810. 

  810. 

  811. String ShaderLanguage::get_precision_name(DataPrecision p_type) {
    812. 

  812. 	switch (p_type) {
    813. 

  813. 		case PRECISION_LOWP:
    814. 

  814. 			return "lowp";
    815. 

  815. 		case PRECISION_MEDIUMP:
    816. 

  816. 			return "mediump";
    817. 

  817. 		case PRECISION_HIGHP:
    818. 

  818. 			return "highp";
    819. 

  819. 		default:
    820. 

  820. 			break;
    821. 

  821. 	}
    822. 

  822. 	return "";
    823. 

  823. }
    824. 

  824. 

  825. String ShaderLanguage::get_datatype_name(DataType p_type) {
    826. 

  826. 	switch (p_type) {
    827. 

  827. 		case TYPE_VOID:
    828. 

  828. 			return "void";
    829. 

  829. 		case TYPE_BOOL:
    830. 

  830. 			return "bool";
    831. 

  831. 		case TYPE_BVEC2:
    832. 

  832. 			return "bvec2";
    833. 

  833. 		case TYPE_BVEC3:
    834. 

  834. 			return "bvec3";
    835. 

  835. 		case TYPE_BVEC4:
    836. 

  836. 			return "bvec4";
    837. 

  837. 		case TYPE_INT:
    838. 

  838. 			return "int";
    839. 

  839. 		case TYPE_IVEC2:
    840. 

  840. 			return "ivec2";
    841. 

  841. 		case TYPE_IVEC3:
    842. 

  842. 			return "ivec3";
    843. 

  843. 		case TYPE_IVEC4:
    844. 

  844. 			return "ivec4";
    845. 

  845. 		case TYPE_UINT:
    846. 

  846. 			return "uint";
    847. 

  847. 		case TYPE_UVEC2:
    848. 

  848. 			return "uvec2";
    849. 

  849. 		case TYPE_UVEC3:
    850. 

  850. 			return "uvec3";
    851. 

  851. 		case TYPE_UVEC4:
    852. 

  852. 			return "uvec4";
    853. 

  853. 		case TYPE_FLOAT:
    854. 

  854. 			return "float";
    855. 

  855. 		case TYPE_VEC2:
    856. 

  856. 			return "vec2";
    857. 

  857. 		case TYPE_VEC3:
    858. 

  858. 			return "vec3";
    859. 

  859. 		case TYPE_VEC4:
    860. 

  860. 			return "vec4";
    861. 

  861. 		case TYPE_MAT2:
    862. 

  862. 			return "mat2";
    863. 

  863. 		case TYPE_MAT3:
    864. 

  864. 			return "mat3";
    865. 

  865. 		case TYPE_MAT4:
    866. 

  866. 			return "mat4";
    867. 

  867. 		case TYPE_SAMPLER2D:
    868. 

  868. 			return "sampler2D";
    869. 

  869. 		case TYPE_ISAMPLER2D:
    870. 

  870. 			return "isampler2D";
    871. 

  871. 		case TYPE_USAMPLER2D:
    872. 

  872. 			return "usampler2D";
    873. 

  873. 		case TYPE_SAMPLER2DARRAY:
    874. 

  874. 			return "sampler2DArray";
    875. 

  875. 		case TYPE_ISAMPLER2DARRAY:
    876. 

  876. 			return "isampler2DArray";
    877. 

  877. 		case TYPE_USAMPLER2DARRAY:
    878. 

  878. 			return "usampler2DArray";
    879. 

  879. 		case TYPE_SAMPLER3D:
    880. 

  880. 			return "sampler3D";
    881. 

  881. 		case TYPE_ISAMPLER3D:
    882. 

  882. 			return "isampler3D";
    883. 

  883. 		case TYPE_USAMPLER3D:
    884. 

  884. 			return "usampler3D";
    885. 

  885. 		case TYPE_SAMPLERCUBE:
    886. 

  886. 			return "samplerCube";
    887. 

  887. 		case TYPE_SAMPLERCUBEARRAY:
    888. 

  888. 			return "samplerCubeArray";
    889. 

  889. 		case TYPE_STRUCT:
    890. 

  890. 			return "struct";
    891. 

  891. 		case TYPE_MAX:
    892. 

  892. 			return "invalid";
    893. 

  893. 	}
    894. 

  894. 

  895. 	return "";
    896. 

  896. }
    897. 

  897. 

  898. bool ShaderLanguage::is_token_nonvoid_datatype(TokenType p_type) {
    899. 

  899. 	return is_token_datatype(p_type) && p_type != TK_TYPE_VOID;
    900. 

  900. }
    901. 

  901. 

  902. void ShaderLanguage::clear() {
    903. 

  903. 	current_function = StringName();
    904. 

  904. 

  905. 	completion_type = COMPLETION_NONE;
    906. 

  906. 	completion_block = nullptr;
    907. 

  907. 	completion_function = StringName();
    908. 

  908. 	completion_class = SubClassTag::TAG_GLOBAL;
    909. 

  909. 	completion_struct = StringName();
    910. 

  910. 

  911. 	error_line = 0;
    912. 

  912. 	tk_line = 1;
    913. 

  913. 	char_idx = 0;
    914. 

  914. 	error_set = false;
    915. 

  915. 	error_str = "";
    916. 

  916. 	while (nodes) {
    917. 

  917. 		Node *n = nodes;
    918. 

  918. 		nodes = nodes->next;
    919. 

  919. 		memdelete(n);
    920. 

  920. 	}
    921. 

  921. }
    922. 

  922. 

  923. bool ShaderLanguage::_find_identifier(const BlockNode *p_block, bool p_allow_reassign, const FunctionInfo &p_function_info, const StringName &p_identifier, DataType *r_data_type, IdentifierType *r_type, bool *r_is_const, int *r_array_size, StringName *r_struct_name) {
    924. 

  924. 	if (p_function_info.built_ins.has(p_identifier)) {
    925. 

  925. 		if (r_data_type) {
    926. 

  926. 			*r_data_type = p_function_info.built_ins[p_identifier].type;
    927. 

  927. 		}
    928. 

  928. 		if (r_is_const) {
    929. 

  929. 			*r_is_const = p_function_info.built_ins[p_identifier].constant;
    930. 

  930. 		}
    931. 

  931. 		if (r_type) {
    932. 

  932. 			*r_type = IDENTIFIER_BUILTIN_VAR;
    933. 

  933. 		}
    934. 

  934. 

  935. 		return true;
    936. 

  936. 	}
    937. 

  937. 

  938. 	if (p_function_info.stage_functions.has(p_identifier)) {
    939. 

  939. 		if (r_data_type) {
    940. 

  940. 			*r_data_type = p_function_info.stage_functions[p_identifier].return_type;
    941. 

  941. 		}
    942. 

  942. 		if (r_is_const) {
    943. 

  943. 			*r_is_const = true;
    944. 

  944. 		}
    945. 

  945. 		if (r_type) {
    946. 

  946. 			*r_type = IDENTIFIER_FUNCTION;
    947. 

  947. 		}
    948. 

  948. 

  949. 		return true;
    950. 

  950. 	}
    951. 

  951. 

  952. 	FunctionNode *function = nullptr;
    953. 

  953. 

  954. 	while (p_block) {
    955. 

  955. 		if (p_block->variables.has(p_identifier)) {
    956. 

  956. 			if (r_data_type) {
    957. 

  957. 				*r_data_type = p_block->variables[p_identifier].type;
    958. 

  958. 			}
    959. 

  959. 			if (r_is_const) {
    960. 

  960. 				*r_is_const = p_block->variables[p_identifier].is_const;
    961. 

  961. 			}
    962. 

  962. 			if (r_array_size) {
    963. 

  963. 				*r_array_size = p_block->variables[p_identifier].array_size;
    964. 

  964. 			}
    965. 

  965. 			if (r_type) {
    966. 

  966. 				*r_type = IDENTIFIER_LOCAL_VAR;
    967. 

  967. 			}
    968. 

  968. 			if (r_struct_name) {
    969. 

  969. 				*r_struct_name = p_block->variables[p_identifier].struct_name;
    970. 

  970. 			}
    971. 

  971. 

  972. 			return true;
    973. 

  973. 		}
    974. 

  974. 

  975. 		if (p_block->parent_function) {
    976. 

  976. 			function = p_block->parent_function;
    977. 

  977. 			break;
    978. 

  978. 		} else {
    979. 

  979. 			if (p_allow_reassign) {
    980. 

  980. 				break;
    981. 

  981. 			}
    982. 

  982. 			ERR_FAIL_COND_V(!p_block->parent_block, false);
    983. 

  983. 			p_block = p_block->parent_block;
    984. 

  984. 		}
    985. 

  985. 	}
    986. 

  986. 

  987. 	if (function) {
    988. 

  988. 		for (int i = 0; i < function->arguments.size(); i++) {
    989. 

  989. 			if (function->arguments[i].name == p_identifier) {
    990. 

  990. 				if (r_data_type) {
    991. 

  991. 					*r_data_type = function->arguments[i].type;
    992. 

  992. 				}
    993. 

  993. 				if (r_type) {
    994. 

  994. 					*r_type = IDENTIFIER_FUNCTION_ARGUMENT;
    995. 

  995. 				}
    996. 

  996. 				if (r_struct_name) {
    997. 

  997. 					*r_struct_name = function->arguments[i].type_str;
    998. 

  998. 				}
    999. 

  999. 				if (r_is_const) {
    1000. 

  1000. 					*r_is_const = function->arguments[i].is_const;
    1001. 

  1001. 				}
    1002. 

  1002. 				return true;
    1003. 

  1003. 			}
    1004. 

  1004. 		}
    1005. 

  1005. 	}
    1006. 

  1006. 

  1007. 	if (shader->varyings.has(p_identifier)) {
    1008. 

  1008. 		if (r_data_type) {
    1009. 

  1009. 			*r_data_type = shader->varyings[p_identifier].type;
    1010. 

  1010. 		}
    1011. 

  1011. 		if (r_array_size) {
    1012. 

  1012. 			*r_array_size = shader->varyings[p_identifier].array_size;
    1013. 

  1013. 		}
    1014. 

  1014. 		if (r_type) {
    1015. 

  1015. 			*r_type = IDENTIFIER_VARYING;
    1016. 

  1016. 		}
    1017. 

  1017. 		return true;
    1018. 

  1018. 	}
    1019. 

  1019. 

  1020. 	if (shader->uniforms.has(p_identifier)) {
    1021. 

  1021. 		if (r_data_type) {
    1022. 

  1022. 			*r_data_type = shader->uniforms[p_identifier].type;
    1023. 

  1023. 		}
    1024. 

  1024. 		if (r_type) {
    1025. 

  1025. 			*r_type = IDENTIFIER_UNIFORM;
    1026. 

  1026. 		}
    1027. 

  1027. 		return true;
    1028. 

  1028. 	}
    1029. 

  1029. 

  1030. 	if (shader->constants.has(p_identifier)) {
    1031. 

  1031. 		if (r_data_type) {
    1032. 

  1032. 			*r_data_type = shader->constants[p_identifier].type;
    1033. 

  1033. 		}
    1034. 

  1034. 		if (r_array_size) {
    1035. 

  1035. 			*r_array_size = shader->constants[p_identifier].array_size;
    1036. 

  1036. 		}
    1037. 

  1037. 		if (r_type) {
    1038. 

  1038. 			*r_type = IDENTIFIER_CONSTANT;
    1039. 

  1039. 		}
    1040. 

  1040. 		if (r_struct_name) {
    1041. 

  1041. 			*r_struct_name = shader->constants[p_identifier].type_str;
    1042. 

  1042. 		}
    1043. 

  1043. 		return true;
    1044. 

  1044. 	}
    1045. 

  1045. 

  1046. 	for (int i = 0; i < shader->functions.size(); i++) {
    1047. 

  1047. 		if (!shader->functions[i].callable) {
    1048. 

  1048. 			continue;
    1049. 

  1049. 		}
    1050. 

  1050. 

  1051. 		if (shader->functions[i].name == p_identifier) {
    1052. 

  1052. 			if (r_data_type) {
    1053. 

  1053. 				*r_data_type = shader->functions[i].function->return_type;
    1054. 

  1054. 			}
    1055. 

  1055. 			if (r_type) {
    1056. 

  1056. 				*r_type = IDENTIFIER_FUNCTION;
    1057. 

  1057. 			}
    1058. 

  1058. 			return true;
    1059. 

  1059. 		}
    1060. 

  1060. 	}
    1061. 

  1061. 

  1062. 	return false;
    1063. 

  1063. }
    1064. 

  1064. 

  1065. bool ShaderLanguage::_validate_operator(OperatorNode *p_op, DataType *r_ret_type) {
    1066. 

  1066. 	bool valid = false;
    1067. 

  1067. 	DataType ret_type = TYPE_VOID;
    1068. 

  1068. 

  1069. 	switch (p_op->op) {
    1070. 

  1070. 		case OP_EQUAL:
    1071. 

  1071. 		case OP_NOT_EQUAL: {
    1072. 

  1072. 			DataType na = p_op->arguments[0]->get_datatype();
    1073. 

  1073. 			DataType nb = p_op->arguments[1]->get_datatype();
    1074. 

  1074. 			valid = na == nb;
    1075. 

  1075. 			ret_type = TYPE_BOOL;
    1076. 

  1076. 		} break;
    1077. 

  1077. 		case OP_LESS:
    1078. 

  1078. 		case OP_LESS_EQUAL:
    1079. 

  1079. 		case OP_GREATER:
    1080. 

  1080. 		case OP_GREATER_EQUAL: {
    1081. 

  1081. 			DataType na = p_op->arguments[0]->get_datatype();
    1082. 

  1082. 			DataType nb = p_op->arguments[1]->get_datatype();
    1083. 

  1083. 

  1084. 			valid = na == nb && (na == TYPE_UINT || na == TYPE_INT || na == TYPE_FLOAT);
    1085. 

  1085. 			ret_type = TYPE_BOOL;
    1086. 

  1086. 

  1087. 		} break;
    1088. 

  1088. 		case OP_AND:
    1089. 

  1089. 		case OP_OR: {
    1090. 

  1090. 			DataType na = p_op->arguments[0]->get_datatype();
    1091. 

  1091. 			DataType nb = p_op->arguments[1]->get_datatype();
    1092. 

  1092. 

  1093. 			valid = na == nb && na == TYPE_BOOL;
    1094. 

  1094. 			ret_type = TYPE_BOOL;
    1095. 

  1095. 

  1096. 		} break;
    1097. 

  1097. 		case OP_NOT: {
    1098. 

  1098. 			DataType na = p_op->arguments[0]->get_datatype();
    1099. 

  1099. 			valid = na == TYPE_BOOL;
    1100. 

  1100. 			ret_type = TYPE_BOOL;
    1101. 

  1101. 

  1102. 		} break;
    1103. 

  1103. 		case OP_INCREMENT:
    1104. 

  1104. 		case OP_DECREMENT:
    1105. 

  1105. 		case OP_POST_INCREMENT:
    1106. 

  1106. 		case OP_POST_DECREMENT:
    1107. 

  1107. 		case OP_NEGATE: {
    1108. 

  1108. 			DataType na = p_op->arguments[0]->get_datatype();
    1109. 

  1109. 			valid = na > TYPE_BOOL && na < TYPE_MAT2;
    1110. 

  1110. 			ret_type = na;
    1111. 

  1111. 		} break;
    1112. 

  1112. 		case OP_ADD:
    1113. 

  1113. 		case OP_SUB:
    1114. 

  1114. 		case OP_MUL:
    1115. 

  1115. 		case OP_DIV: {
    1116. 

  1116. 			DataType na = p_op->arguments[0]->get_datatype();
    1117. 

  1117. 			DataType nb = p_op->arguments[1]->get_datatype();
    1118. 

  1118. 

  1119. 			if (na > nb) {
    1120. 

  1120. 				//make things easier;
    1121. 

  1121. 				SWAP(na, nb);
    1122. 

  1122. 			}
    1123. 

  1123. 

  1124. 			if (na == nb) {
    1125. 

  1125. 				valid = (na > TYPE_BOOL && na <= TYPE_MAT4);
    1126. 

  1126. 				ret_type = na;
    1127. 

  1127. 			} else if (na == TYPE_INT && nb == TYPE_IVEC2) {
    1128. 

  1128. 				valid = true;
    1129. 

  1129. 				ret_type = TYPE_IVEC2;
    1130. 

  1130. 			} else if (na == TYPE_INT && nb == TYPE_IVEC3) {
    1131. 

  1131. 				valid = true;
    1132. 

  1132. 				ret_type = TYPE_IVEC3;
    1133. 

  1133. 			} else if (na == TYPE_INT && nb == TYPE_IVEC4) {
    1134. 

  1134. 				valid = true;
    1135. 

  1135. 				ret_type = TYPE_IVEC4;
    1136. 

  1136. 			} else if (na == TYPE_UINT && nb == TYPE_UVEC2) {
    1137. 

  1137. 				valid = true;
    1138. 

  1138. 				ret_type = TYPE_UVEC2;
    1139. 

  1139. 			} else if (na == TYPE_UINT && nb == TYPE_UVEC3) {
    1140. 

  1140. 				valid = true;
    1141. 

  1141. 				ret_type = TYPE_UVEC3;
    1142. 

  1142. 			} else if (na == TYPE_UINT && nb == TYPE_UVEC4) {
    1143. 

  1143. 				valid = true;
    1144. 

  1144. 				ret_type = TYPE_UVEC4;
    1145. 

  1145. 			} else if (na == TYPE_FLOAT && nb == TYPE_VEC2) {
    1146. 

  1146. 				valid = true;
    1147. 

  1147. 				ret_type = TYPE_VEC2;
    1148. 

  1148. 			} else if (na == TYPE_FLOAT && nb == TYPE_VEC3) {
    1149. 

  1149. 				valid = true;
    1150. 

  1150. 				ret_type = TYPE_VEC3;
    1151. 

  1151. 			} else if (na == TYPE_FLOAT && nb == TYPE_VEC4) {
    1152. 

  1152. 				valid = true;
    1153. 

  1153. 				ret_type = TYPE_VEC4;
    1154. 

  1154. 			} else if (na == TYPE_FLOAT && nb == TYPE_MAT2) {
    1155. 

  1155. 				valid = true;
    1156. 

  1156. 				ret_type = TYPE_MAT2;
    1157. 

  1157. 			} else if (na == TYPE_FLOAT && nb == TYPE_MAT3) {
    1158. 

  1158. 				valid = true;
    1159. 

  1159. 				ret_type = TYPE_MAT3;
    1160. 

  1160. 			} else if (na == TYPE_FLOAT && nb == TYPE_MAT4) {
    1161. 

  1161. 				valid = true;
    1162. 

  1162. 				ret_type = TYPE_MAT4;
    1163. 

  1163. 			} else if (p_op->op == OP_MUL && na == TYPE_VEC2 && nb == TYPE_MAT2) {
    1164. 

  1164. 				valid = true;
    1165. 

  1165. 				ret_type = TYPE_VEC2;
    1166. 

  1166. 			} else if (p_op->op == OP_MUL && na == TYPE_VEC3 && nb == TYPE_MAT3) {
    1167. 

  1167. 				valid = true;
    1168. 

  1168. 				ret_type = TYPE_VEC3;
    1169. 

  1169. 			} else if (p_op->op == OP_MUL && na == TYPE_VEC4 && nb == TYPE_MAT4) {
    1170. 

  1170. 				valid = true;
    1171. 

  1171. 				ret_type = TYPE_VEC4;
    1172. 

  1172. 			}
    1173. 

  1173. 		} break;
    1174. 

  1174. 		case OP_ASSIGN_MOD:
    1175. 

  1175. 		case OP_MOD: {
    1176. 

  1176. 			/*
    1177. 

  1177. 			 * The operator modulus (%) operates on signed or unsigned integers or integer vectors. The operand
    1178. 

  1178. 			 * types must both be signed or both be unsigned. The operands cannot be vectors of differing size. If
    1179. 

  1179. 			 * one operand is a scalar and the other vector, then the scalar is applied component-wise to the vector,
    1180. 

  1180. 			 * resulting in the same type as the vector. If both are vectors of the same size, the result is computed
    1181. 

  1181. 			 * component-wise.
    1182. 

  1182. 			 */
    1183. 

  1183. 

  1184. 			DataType na = p_op->arguments[0]->get_datatype();
    1185. 

  1185. 			DataType nb = p_op->arguments[1]->get_datatype();
    1186. 

  1186. 

  1187. 			if (na == TYPE_INT && nb == TYPE_INT) {
    1188. 

  1188. 				valid = true;
    1189. 

  1189. 				ret_type = TYPE_INT;
    1190. 

  1190. 			} else if (na == TYPE_IVEC2 && nb == TYPE_INT) {
    1191. 

  1191. 				valid = true;
    1192. 

  1192. 				ret_type = TYPE_IVEC2;
    1193. 

  1193. 			} else if (na == TYPE_IVEC3 && nb == TYPE_INT) {
    1194. 

  1194. 				valid = true;
    1195. 

  1195. 				ret_type = TYPE_IVEC3;
    1196. 

  1196. 			} else if (na == TYPE_IVEC4 && nb == TYPE_INT) {
    1197. 

  1197. 				valid = true;
    1198. 

  1198. 				ret_type = TYPE_IVEC4;
    1199. 

  1199. 			} else if (na == TYPE_IVEC2 && nb == TYPE_IVEC2) {
    1200. 

  1200. 				valid = true;
    1201. 

  1201. 				ret_type = TYPE_IVEC2;
    1202. 

  1202. 			} else if (na == TYPE_IVEC3 && nb == TYPE_IVEC3) {
    1203. 

  1203. 				valid = true;
    1204. 

  1204. 				ret_type = TYPE_IVEC3;
    1205. 

  1205. 			} else if (na == TYPE_IVEC4 && nb == TYPE_IVEC4) {
    1206. 

  1206. 				valid = true;
    1207. 

  1207. 				ret_type = TYPE_IVEC4;
    1208. 

  1208. 				/////
    1209. 

  1209. 			} else if (na == TYPE_UINT && nb == TYPE_UINT) {
    1210. 

  1210. 				valid = true;
    1211. 

  1211. 				ret_type = TYPE_UINT;
    1212. 

  1212. 			} else if (na == TYPE_UVEC2 && nb == TYPE_UINT) {
    1213. 

  1213. 				valid = true;
    1214. 

  1214. 				ret_type = TYPE_UVEC2;
    1215. 

  1215. 			} else if (na == TYPE_UVEC3 && nb == TYPE_UINT) {
    1216. 

  1216. 				valid = true;
    1217. 

  1217. 				ret_type = TYPE_UVEC3;
    1218. 

  1218. 			} else if (na == TYPE_UVEC4 && nb == TYPE_UINT) {
    1219. 

  1219. 				valid = true;
    1220. 

  1220. 				ret_type = TYPE_UVEC4;
    1221. 

  1221. 			} else if (na == TYPE_UVEC2 && nb == TYPE_UVEC2) {
    1222. 

  1222. 				valid = true;
    1223. 

  1223. 				ret_type = TYPE_UVEC2;
    1224. 

  1224. 			} else if (na == TYPE_UVEC3 && nb == TYPE_UVEC3) {
    1225. 

  1225. 				valid = true;
    1226. 

  1226. 				ret_type = TYPE_UVEC3;
    1227. 

  1227. 			} else if (na == TYPE_UVEC4 && nb == TYPE_UVEC4) {
    1228. 

  1228. 				valid = true;
    1229. 

  1229. 				ret_type = TYPE_UVEC4;
    1230. 

  1230. 			}
    1231. 

  1231. 		} break;
    1232. 

  1232. 		case OP_ASSIGN_SHIFT_LEFT:
    1233. 

  1233. 		case OP_ASSIGN_SHIFT_RIGHT:
    1234. 

  1234. 		case OP_SHIFT_LEFT:
    1235. 

  1235. 		case OP_SHIFT_RIGHT: {
    1236. 

  1236. 			DataType na = p_op->arguments[0]->get_datatype();
    1237. 

  1237. 			DataType nb = p_op->arguments[1]->get_datatype();
    1238. 

  1238. 

  1239. 			if (na == TYPE_INT && nb == TYPE_INT) {
    1240. 

  1240. 				valid = true;
    1241. 

  1241. 				ret_type = TYPE_INT;
    1242. 

  1242. 			} else if (na == TYPE_IVEC2 && nb == TYPE_INT) {
    1243. 

  1243. 				valid = true;
    1244. 

  1244. 				ret_type = TYPE_IVEC2;
    1245. 

  1245. 			} else if (na == TYPE_IVEC3 && nb == TYPE_INT) {
    1246. 

  1246. 				valid = true;
    1247. 

  1247. 				ret_type = TYPE_IVEC3;
    1248. 

  1248. 			} else if (na == TYPE_IVEC4 && nb == TYPE_INT) {
    1249. 

  1249. 				valid = true;
    1250. 

  1250. 				ret_type = TYPE_IVEC4;
    1251. 

  1251. 			} else if (na == TYPE_IVEC2 && nb == TYPE_IVEC2) {
    1252. 

  1252. 				valid = true;
    1253. 

  1253. 				ret_type = TYPE_IVEC2;
    1254. 

  1254. 			} else if (na == TYPE_IVEC3 && nb == TYPE_IVEC3) {
    1255. 

  1255. 				valid = true;
    1256. 

  1256. 				ret_type = TYPE_IVEC3;
    1257. 

  1257. 			} else if (na == TYPE_IVEC4 && nb == TYPE_IVEC4) {
    1258. 

  1258. 				valid = true;
    1259. 

  1259. 				ret_type = TYPE_IVEC4;
    1260. 

  1260. 			} else if (na == TYPE_UINT && nb == TYPE_UINT) {
    1261. 

  1261. 				valid = true;
    1262. 

  1262. 				ret_type = TYPE_UINT;
    1263. 

  1263. 			} else if (na == TYPE_UVEC2 && nb == TYPE_UINT) {
    1264. 

  1264. 				valid = true;
    1265. 

  1265. 				ret_type = TYPE_UVEC2;
    1266. 

  1266. 			} else if (na == TYPE_UVEC3 && nb == TYPE_UINT) {
    1267. 

  1267. 				valid = true;
    1268. 

  1268. 				ret_type = TYPE_UVEC3;
    1269. 

  1269. 			} else if (na == TYPE_UVEC4 && nb == TYPE_UINT) {
    1270. 

  1270. 				valid = true;
    1271. 

  1271. 				ret_type = TYPE_UVEC4;
    1272. 

  1272. 			} else if (na == TYPE_UVEC2 && nb == TYPE_UVEC2) {
    1273. 

  1273. 				valid = true;
    1274. 

  1274. 				ret_type = TYPE_UVEC2;
    1275. 

  1275. 			} else if (na == TYPE_UVEC3 && nb == TYPE_UVEC3) {
    1276. 

  1276. 				valid = true;
    1277. 

  1277. 				ret_type = TYPE_UVEC3;
    1278. 

  1278. 			} else if (na == TYPE_UVEC4 && nb == TYPE_UVEC4) {
    1279. 

  1279. 				valid = true;
    1280. 

  1280. 				ret_type = TYPE_UVEC4;
    1281. 

  1281. 			}
    1282. 

  1282. 		} break;
    1283. 

  1283. 		case OP_ASSIGN: {
    1284. 

  1284. 			DataType na = p_op->arguments[0]->get_datatype();
    1285. 

  1285. 			DataType nb = p_op->arguments[1]->get_datatype();
    1286. 

  1286. 			if (na == TYPE_STRUCT || nb == TYPE_STRUCT) {
    1287. 

  1287. 				valid = p_op->arguments[0]->get_datatype_name() == p_op->arguments[1]->get_datatype_name();
    1288. 

  1288. 			} else {
    1289. 

  1289. 				valid = na == nb;
    1290. 

  1290. 			}
    1291. 

  1291. 			ret_type = na;
    1292. 

  1292. 		} break;
    1293. 

  1293. 		case OP_ASSIGN_ADD:
    1294. 

  1294. 		case OP_ASSIGN_SUB:
    1295. 

  1295. 		case OP_ASSIGN_MUL:
    1296. 

  1296. 		case OP_ASSIGN_DIV: {
    1297. 

  1297. 			DataType na = p_op->arguments[0]->get_datatype();
    1298. 

  1298. 			DataType nb = p_op->arguments[1]->get_datatype();
    1299. 

  1299. 

  1300. 			if (na == nb) {
    1301. 

  1301. 				valid = (na > TYPE_BOOL && na < TYPE_MAT2) || (p_op->op == OP_ASSIGN_MUL && na >= TYPE_MAT2 && na <= TYPE_MAT4);
    1302. 

  1302. 				ret_type = na;
    1303. 

  1303. 			} else if (na == TYPE_IVEC2 && nb == TYPE_INT) {
    1304. 

  1304. 				valid = true;
    1305. 

  1305. 				ret_type = TYPE_IVEC2;
    1306. 

  1306. 			} else if (na == TYPE_IVEC3 && nb == TYPE_INT) {
    1307. 

  1307. 				valid = true;
    1308. 

  1308. 				ret_type = TYPE_IVEC3;
    1309. 

  1309. 			} else if (na == TYPE_IVEC4 && nb == TYPE_INT) {
    1310. 

  1310. 				valid = true;
    1311. 

  1311. 				ret_type = TYPE_IVEC4;
    1312. 

  1312. 			} else if (na == TYPE_UVEC2 && nb == TYPE_UINT) {
    1313. 

  1313. 				valid = true;
    1314. 

  1314. 				ret_type = TYPE_UVEC2;
    1315. 

  1315. 			} else if (na == TYPE_UVEC3 && nb == TYPE_UINT) {
    1316. 

  1316. 				valid = true;
    1317. 

  1317. 				ret_type = TYPE_UVEC3;
    1318. 

  1318. 			} else if (na == TYPE_UVEC4 && nb == TYPE_UINT) {
    1319. 

  1319. 				valid = true;
    1320. 

  1320. 				ret_type = TYPE_UVEC4;
    1321. 

  1321. 			} else if (na == TYPE_VEC2 && nb == TYPE_FLOAT) {
    1322. 

  1322. 				valid = true;
    1323. 

  1323. 				ret_type = TYPE_VEC2;
    1324. 

  1324. 			} else if (na == TYPE_VEC3 && nb == TYPE_FLOAT) {
    1325. 

  1325. 				valid = true;
    1326. 

  1326. 				ret_type = TYPE_VEC3;
    1327. 

  1327. 			} else if (na == TYPE_VEC4 && nb == TYPE_FLOAT) {
    1328. 

  1328. 				valid = true;
    1329. 

  1329. 				ret_type = TYPE_VEC4;
    1330. 

  1330. 			} else if (na == TYPE_MAT2 && nb == TYPE_FLOAT) {
    1331. 

  1331. 				valid = true;
    1332. 

  1332. 				ret_type = TYPE_MAT2;
    1333. 

  1333. 			} else if (na == TYPE_MAT3 && nb == TYPE_FLOAT) {
    1334. 

  1334. 				valid = true;
    1335. 

  1335. 				ret_type = TYPE_MAT3;
    1336. 

  1336. 			} else if (na == TYPE_MAT4 && nb == TYPE_FLOAT) {
    1337. 

  1337. 				valid = true;
    1338. 

  1338. 				ret_type = TYPE_MAT4;
    1339. 

  1339. 			} else if (p_op->op == OP_ASSIGN_MUL && na == TYPE_VEC2 && nb == TYPE_MAT2) {
    1340. 

  1340. 				valid = true;
    1341. 

  1341. 				ret_type = TYPE_VEC2;
    1342. 

  1342. 			} else if (p_op->op == OP_ASSIGN_MUL && na == TYPE_VEC3 && nb == TYPE_MAT3) {
    1343. 

  1343. 				valid = true;
    1344. 

  1344. 				ret_type = TYPE_VEC3;
    1345. 

  1345. 			} else if (p_op->op == OP_ASSIGN_MUL && na == TYPE_VEC4 && nb == TYPE_MAT4) {
    1346. 

  1346. 				valid = true;
    1347. 

  1347. 				ret_type = TYPE_VEC4;
    1348. 

  1348. 			}
    1349. 

  1349. 		} break;
    1350. 

  1350. 		case OP_ASSIGN_BIT_AND:
    1351. 

  1351. 		case OP_ASSIGN_BIT_OR:
    1352. 

  1352. 		case OP_ASSIGN_BIT_XOR:
    1353. 

  1353. 		case OP_BIT_AND:
    1354. 

  1354. 		case OP_BIT_OR:
    1355. 

  1355. 		case OP_BIT_XOR: {
    1356. 

  1356. 			/*
    1357. 

  1357. 			 * The bitwise operators and (&), exclusive-or (^), and inclusive-or (|). The operands must be of type
    1358. 

  1358. 			 * signed or unsigned integers or integer vectors. The operands cannot be vectors of differing size. If
    1359. 

  1359. 			 * one operand is a scalar and the other a vector, the scalar is applied component-wise to the vector,
    1360. 

  1360. 			 * resulting in the same type as the vector. The fundamental types of the operands (signed or unsigned)
    1361. 

  1361. 			 * must match.
    1362. 

  1362. 			 */
    1363. 

  1363. 

  1364. 			DataType na = p_op->arguments[0]->get_datatype();
    1365. 

  1365. 			DataType nb = p_op->arguments[1]->get_datatype();
    1366. 

  1366. 

  1367. 			if (na > nb && p_op->op >= OP_BIT_AND) {
    1368. 

  1368. 				//can swap for non assign
    1369. 

  1369. 				SWAP(na, nb);
    1370. 

  1370. 			}
    1371. 

  1371. 

  1372. 			if (na == TYPE_INT && nb == TYPE_INT) {
    1373. 

  1373. 				valid = true;
    1374. 

  1374. 				ret_type = TYPE_INT;
    1375. 

  1375. 			} else if (na == TYPE_IVEC2 && nb == TYPE_INT) {
    1376. 

  1376. 				valid = true;
    1377. 

  1377. 				ret_type = TYPE_IVEC2;
    1378. 

  1378. 			} else if (na == TYPE_IVEC3 && nb == TYPE_INT) {
    1379. 

  1379. 				valid = true;
    1380. 

  1380. 				ret_type = TYPE_IVEC3;
    1381. 

  1381. 			} else if (na == TYPE_IVEC4 && nb == TYPE_INT) {
    1382. 

  1382. 				valid = true;
    1383. 

  1383. 				ret_type = TYPE_IVEC4;
    1384. 

  1384. 			} else if (na == TYPE_IVEC2 && nb == TYPE_IVEC2) {
    1385. 

  1385. 				valid = true;
    1386. 

  1386. 				ret_type = TYPE_IVEC2;
    1387. 

  1387. 			} else if (na == TYPE_IVEC3 && nb == TYPE_IVEC3) {
    1388. 

  1388. 				valid = true;
    1389. 

  1389. 				ret_type = TYPE_IVEC3;
    1390. 

  1390. 			} else if (na == TYPE_IVEC4 && nb == TYPE_IVEC4) {
    1391. 

  1391. 				valid = true;
    1392. 

  1392. 				ret_type = TYPE_IVEC4;
    1393. 

  1393. 				/////
    1394. 

  1394. 			} else if (na == TYPE_UINT && nb == TYPE_UINT) {
    1395. 

  1395. 				valid = true;
    1396. 

  1396. 				ret_type = TYPE_UINT;
    1397. 

  1397. 			} else if (na == TYPE_UVEC2 && nb == TYPE_UINT) {
    1398. 

  1398. 				valid = true;
    1399. 

  1399. 				ret_type = TYPE_UVEC2;
    1400. 

  1400. 			} else if (na == TYPE_UVEC3 && nb == TYPE_UINT) {
    1401. 

  1401. 				valid = true;
    1402. 

  1402. 				ret_type = TYPE_UVEC3;
    1403. 

  1403. 			} else if (na == TYPE_UVEC4 && nb == TYPE_UINT) {
    1404. 

  1404. 				valid = true;
    1405. 

  1405. 				ret_type = TYPE_UVEC4;
    1406. 

  1406. 			} else if (na == TYPE_UVEC2 && nb == TYPE_UVEC2) {
    1407. 

  1407. 				valid = true;
    1408. 

  1408. 				ret_type = TYPE_UVEC2;
    1409. 

  1409. 			} else if (na == TYPE_UVEC3 && nb == TYPE_UVEC3) {
    1410. 

  1410. 				valid = true;
    1411. 

  1411. 				ret_type = TYPE_UVEC3;
    1412. 

  1412. 			} else if (na == TYPE_UVEC4 && nb == TYPE_UVEC4) {
    1413. 

  1413. 				valid = true;
    1414. 

  1414. 				ret_type = TYPE_UVEC4;
    1415. 

  1415. 			}
    1416. 

  1416. 		} break;
    1417. 

  1417. 		case OP_BIT_INVERT: { //unaries
    1418. 

  1418. 			DataType na = p_op->arguments[0]->get_datatype();
    1419. 

  1419. 			valid = na >= TYPE_INT && na < TYPE_FLOAT;
    1420. 

  1420. 			ret_type = na;
    1421. 

  1421. 		} break;
    1422. 

  1422. 		case OP_SELECT_IF: {
    1423. 

  1423. 			DataType na = p_op->arguments[0]->get_datatype();
    1424. 

  1424. 			DataType nb = p_op->arguments[1]->get_datatype();
    1425. 

  1425. 			DataType nc = p_op->arguments[2]->get_datatype();
    1426. 

  1426. 

  1427. 			valid = na == TYPE_BOOL && (nb == nc);
    1428. 

  1428. 			ret_type = nb;
    1429. 

  1429. 		} break;
    1430. 

  1430. 		default: {
    1431. 

  1431. 			ERR_FAIL_V(false);
    1432. 

  1432. 		}
    1433. 

  1433. 	}
    1434. 

  1434. 

  1435. 	if (r_ret_type) {
    1436. 

  1436. 		*r_ret_type = ret_type;
    1437. 

  1437. 	}
    1438. 

  1438. 	return valid;
    1439. 

  1439. }
    1440. 

  1440. 

  1441. const ShaderLanguage::BuiltinFuncDef ShaderLanguage::builtin_func_defs[] = {
    1442. 

  1442. 	//constructors
    1443. 

  1443. 	{ "bool", TYPE_BOOL, { TYPE_BOOL, TYPE_VOID }, TAG_GLOBAL, false },
    1444. 

  1444. 	{ "bvec2", TYPE_BVEC2, { TYPE_BOOL, TYPE_VOID }, TAG_GLOBAL, false },
    1445. 

  1445. 	{ "bvec2", TYPE_BVEC2, { TYPE_BOOL, TYPE_BOOL, TYPE_VOID }, TAG_GLOBAL, false },
    1446. 

  1446. 	{ "bvec3", TYPE_BVEC3, { TYPE_BOOL, TYPE_VOID }, TAG_GLOBAL, false },
    1447. 

  1447. 	{ "bvec3", TYPE_BVEC3, { TYPE_BOOL, TYPE_BOOL, TYPE_BOOL, TYPE_VOID }, TAG_GLOBAL, false },
    1448. 

  1448. 	{ "bvec3", TYPE_BVEC3, { TYPE_BVEC2, TYPE_BOOL, TYPE_VOID }, TAG_GLOBAL, false },
    1449. 

  1449. 	{ "bvec3", TYPE_BVEC3, { TYPE_BOOL, TYPE_BVEC2, TYPE_VOID }, TAG_GLOBAL, false },
    1450. 

  1450. 	{ "bvec4", TYPE_BVEC4, { TYPE_BOOL, TYPE_VOID }, TAG_GLOBAL, false },
    1451. 

  1451. 	{ "bvec4", TYPE_BVEC4, { TYPE_BOOL, TYPE_BOOL, TYPE_BOOL, TYPE_BOOL, TYPE_VOID }, TAG_GLOBAL, false },
    1452. 

  1452. 	{ "bvec4", TYPE_BVEC4, { TYPE_BOOL, TYPE_BVEC2, TYPE_BOOL, TYPE_VOID }, TAG_GLOBAL, false },
    1453. 

  1453. 	{ "bvec4", TYPE_BVEC4, { TYPE_BVEC2, TYPE_BOOL, TYPE_BOOL, TYPE_VOID }, TAG_GLOBAL, false },
    1454. 

  1454. 	{ "bvec4", TYPE_BVEC4, { TYPE_BOOL, TYPE_BOOL, TYPE_BVEC2, TYPE_VOID }, TAG_GLOBAL, false },
    1455. 

  1455. 	{ "bvec4", TYPE_BVEC4, { TYPE_BOOL, TYPE_BVEC3, TYPE_VOID }, TAG_GLOBAL, false },
    1456. 

  1456. 	{ "bvec4", TYPE_BVEC4, { TYPE_BVEC3, TYPE_BOOL, TYPE_VOID }, TAG_GLOBAL, false },
    1457. 

  1457. 	{ "bvec4", TYPE_BVEC4, { TYPE_BVEC2, TYPE_BVEC2, TYPE_VOID }, TAG_GLOBAL, false },
    1458. 

  1458. 

  1459. 	{ "float", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
    1460. 

  1460. 	{ "vec2", TYPE_VEC2, { TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
    1461. 

  1461. 	{ "vec2", TYPE_VEC2, { TYPE_FLOAT, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
    1462. 

  1462. 	{ "vec3", TYPE_VEC3, { TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
    1463. 

  1463. 	{ "vec3", TYPE_VEC3, { TYPE_FLOAT, TYPE_FLOAT, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
    1464. 

  1464. 	{ "vec3", TYPE_VEC3, { TYPE_VEC2, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
    1465. 

  1465. 	{ "vec3", TYPE_VEC3, { TYPE_FLOAT, TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
    1466. 

  1466. 	{ "vec4", TYPE_VEC4, { TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
    1467. 

  1467. 	{ "vec4", TYPE_VEC4, { TYPE_FLOAT, TYPE_FLOAT, TYPE_FLOAT, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
    1468. 

  1468. 	{ "vec4", TYPE_VEC4, { TYPE_FLOAT, TYPE_VEC2, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
    1469. 

  1469. 	{ "vec4", TYPE_VEC4, { TYPE_VEC2, TYPE_FLOAT, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
    1470. 

  1470. 	{ "vec4", TYPE_VEC4, { TYPE_FLOAT, TYPE_FLOAT, TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
    1471. 

  1471. 	{ "vec4", TYPE_VEC4, { TYPE_FLOAT, TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
    1472. 

  1472. 	{ "vec4", TYPE_VEC4, { TYPE_VEC3, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
    1473. 

  1473. 	{ "vec4", TYPE_VEC4, { TYPE_VEC2, TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
    1474. 

  1474. 

  1475. 	{ "int", TYPE_INT, { TYPE_INT, TYPE_VOID }, TAG_GLOBAL, false },
    1476. 

  1476. 	{ "ivec2", TYPE_IVEC2, { TYPE_INT, TYPE_VOID }, TAG_GLOBAL, false },
    1477. 

  1477. 	{ "ivec2", TYPE_IVEC2, { TYPE_INT, TYPE_INT, TYPE_VOID }, TAG_GLOBAL, false },
    1478. 

  1478. 	{ "ivec3", TYPE_IVEC3, { TYPE_INT, TYPE_VOID }, TAG_GLOBAL, false },
    1479. 

  1479. 	{ "ivec3", TYPE_IVEC3, { TYPE_INT, TYPE_INT, TYPE_INT, TYPE_VOID }, TAG_GLOBAL, false },
    1480. 

  1480. 	{ "ivec3", TYPE_IVEC3, { TYPE_IVEC2, TYPE_INT, TYPE_VOID }, TAG_GLOBAL, false },
    1481. 

  1481. 	{ "ivec3", TYPE_IVEC3, { TYPE_INT, TYPE_IVEC2, TYPE_VOID }, TAG_GLOBAL, false },
    1482. 

  1482. 	{ "ivec4", TYPE_IVEC4, { TYPE_INT, TYPE_VOID }, TAG_GLOBAL, false },
    1483. 

  1483. 	{ "ivec4", TYPE_IVEC4, { TYPE_INT, TYPE_INT, TYPE_INT, TYPE_INT, TYPE_VOID }, TAG_GLOBAL, false },
    1484. 

  1484. 	{ "ivec4", TYPE_IVEC4, { TYPE_INT, TYPE_IVEC2, TYPE_INT, TYPE_VOID }, TAG_GLOBAL, false },
    1485. 

  1485. 	{ "ivec4", TYPE_IVEC4, { TYPE_IVEC2, TYPE_INT, TYPE_INT, TYPE_VOID }, TAG_GLOBAL, false },
    1486. 

  1486. 	{ "ivec4", TYPE_IVEC4, { TYPE_INT, TYPE_INT, TYPE_IVEC2, TYPE_VOID }, TAG_GLOBAL, false },
    1487. 

  1487. 	{ "ivec4", TYPE_IVEC4, { TYPE_INT, TYPE_IVEC3, TYPE_VOID }, TAG_GLOBAL, false },
    1488. 

  1488. 	{ "ivec4", TYPE_IVEC4, { TYPE_IVEC3, TYPE_INT, TYPE_VOID }, TAG_GLOBAL, false },
    1489. 

  1489. 	{ "ivec4", TYPE_IVEC4, { TYPE_IVEC2, TYPE_IVEC2, TYPE_VOID }, TAG_GLOBAL, false },
    1490. 

  1490. 

  1491. 	{ "uint", TYPE_UINT, { TYPE_UINT, TYPE_VOID }, TAG_GLOBAL, true },
    1492. 

  1492. 	{ "uvec2", TYPE_UVEC2, { TYPE_UINT, TYPE_VOID }, TAG_GLOBAL, true },
    1493. 

  1493. 	{ "uvec2", TYPE_UVEC2, { TYPE_UINT, TYPE_UINT, TYPE_VOID }, TAG_GLOBAL, true },
    1494. 

  1494. 	{ "uvec3", TYPE_UVEC3, { TYPE_UINT, TYPE_VOID }, TAG_GLOBAL, true },
    1495. 

  1495. 	{ "uvec3", TYPE_UVEC3, { TYPE_UINT, TYPE_UINT, TYPE_UINT, TYPE_VOID }, TAG_GLOBAL, true },
    1496. 

  1496. 	{ "uvec3", TYPE_UVEC3, { TYPE_UVEC2, TYPE_UINT, TYPE_VOID }, TAG_GLOBAL, true },
    1497. 

  1497. 	{ "uvec3", TYPE_UVEC3, { TYPE_UINT, TYPE_UVEC2, TYPE_VOID }, TAG_GLOBAL, true },
    1498. 

  1498. 	{ "uvec4", TYPE_UVEC4, { TYPE_UINT, TYPE_VOID }, TAG_GLOBAL, true },
    1499. 

  1499. 	{ "uvec4", TYPE_UVEC4, { TYPE_UINT, TYPE_UINT, TYPE_UINT, TYPE_UINT, TYPE_VOID }, TAG_GLOBAL, true },
    1500. 

  1500. 	{ "uvec4", TYPE_UVEC4, { TYPE_UINT, TYPE_UVEC2, TYPE_UINT, TYPE_VOID }, TAG_GLOBAL, true },
    1501. 

  1501. 	{ "uvec4", TYPE_UVEC4, { TYPE_UVEC2, TYPE_UINT, TYPE_UINT, TYPE_VOID }, TAG_GLOBAL, true },
    1502. 

  1502. 	{ "uvec4", TYPE_UVEC4, { TYPE_UINT, TYPE_UINT, TYPE_UVEC2, TYPE_VOID }, TAG_GLOBAL, true },
    1503. 

  1503. 	{ "uvec4", TYPE_UVEC4, { TYPE_UINT, TYPE_UVEC3, TYPE_VOID }, TAG_GLOBAL, true },
    1504. 

  1504. 	{ "uvec4", TYPE_UVEC4, { TYPE_UVEC3, TYPE_UINT, TYPE_VOID }, TAG_GLOBAL, true },
    1505. 

  1505. 	{ "uvec4", TYPE_UVEC4, { TYPE_UVEC2, TYPE_UVEC2, TYPE_VOID }, TAG_GLOBAL, true },
    1506. 

  1506. 

  1507. 	{ "mat2", TYPE_MAT2, { TYPE_VEC2, TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
    1508. 

  1508. 	{ "mat3", TYPE_MAT3, { TYPE_VEC3, TYPE_VEC3, TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
    1509. 

  1509. 	{ "mat4", TYPE_MAT4, { TYPE_VEC4, TYPE_VEC4, TYPE_VEC4, TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
    1510. 

  1510. 

  1511. 	{ "mat2", TYPE_MAT2, { TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
    1512. 

  1512. 	{ "mat3", TYPE_MAT3, { TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
    1513. 

  1513. 	{ "mat4", TYPE_MAT4, { TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
    1514. 

  1514. 

  1515. 	//conversion scalars
    1516. 

  1516. 

  1517. 	{ "int", TYPE_INT, { TYPE_BOOL, TYPE_VOID }, TAG_GLOBAL, false },
    1518. 

  1518. 	{ "int", TYPE_INT, { TYPE_INT, TYPE_VOID }, TAG_GLOBAL, false },
    1519. 

  1519. 	{ "int", TYPE_INT, { TYPE_UINT, TYPE_VOID }, TAG_GLOBAL, true },
    1520. 

  1520. 	{ "int", TYPE_INT, { TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
    1521. 

  1521. 

  1522. 	{ "float", TYPE_FLOAT, { TYPE_BOOL, TYPE_VOID }, TAG_GLOBAL, false },
    1523. 

  1523. 	{ "float", TYPE_FLOAT, { TYPE_INT, TYPE_VOID }, TAG_GLOBAL, false },
    1524. 

  1524. 	{ "float", TYPE_FLOAT, { TYPE_UINT, TYPE_VOID }, TAG_GLOBAL, true },
    1525. 

  1525. 	{ "float", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
    1526. 

  1526. 

  1527. 	{ "uint", TYPE_UINT, { TYPE_BOOL, TYPE_VOID }, TAG_GLOBAL, true },
    1528. 

  1528. 	{ "uint", TYPE_UINT, { TYPE_INT, TYPE_VOID }, TAG_GLOBAL, true },
    1529. 

  1529. 	{ "uint", TYPE_UINT, { TYPE_UINT, TYPE_VOID }, TAG_GLOBAL, true },
    1530. 

  1530. 	{ "uint", TYPE_UINT, { TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, true },
    1531. 

  1531. 

  1532. 	{ "bool", TYPE_BOOL, { TYPE_BOOL, TYPE_VOID }, TAG_GLOBAL, false },
    1533. 

  1533. 	{ "bool", TYPE_BOOL, { TYPE_INT, TYPE_VOID }, TAG_GLOBAL, false },
    1534. 

  1534. 	{ "bool", TYPE_BOOL, { TYPE_UINT, TYPE_VOID }, TAG_GLOBAL, true },
    1535. 

  1535. 	{ "bool", TYPE_BOOL, { TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
    1536. 

  1536. 

  1537. 	//conversion vectors
    1538. 

  1538. 

  1539. 	{ "ivec2", TYPE_IVEC2, { TYPE_BVEC2, TYPE_VOID }, TAG_GLOBAL, false },
    1540. 

  1540. 	{ "ivec2", TYPE_IVEC2, { TYPE_IVEC2, TYPE_VOID }, TAG_GLOBAL, false },
    1541. 

  1541. 	{ "ivec2", TYPE_IVEC2, { TYPE_UVEC2, TYPE_VOID }, TAG_GLOBAL, false },
    1542. 

  1542. 	{ "ivec2", TYPE_IVEC2, { TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
    1543. 

  1543. 

  1544. 	{ "vec2", TYPE_VEC2, { TYPE_BVEC2, TYPE_VOID }, TAG_GLOBAL, false },
    1545. 

  1545. 	{ "vec2", TYPE_VEC2, { TYPE_IVEC2, TYPE_VOID }, TAG_GLOBAL, false },
    1546. 

  1546. 	{ "vec2", TYPE_VEC2, { TYPE_UVEC2, TYPE_VOID }, TAG_GLOBAL, true },
    1547. 

  1547. 	{ "vec2", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
    1548. 

  1548. 

  1549. 	{ "uvec2", TYPE_UVEC2, { TYPE_BVEC2, TYPE_VOID }, TAG_GLOBAL, true },
    1550. 

  1550. 	{ "uvec2", TYPE_UVEC2, { TYPE_IVEC2, TYPE_VOID }, TAG_GLOBAL, true },
    1551. 

  1551. 	{ "uvec2", TYPE_UVEC2, { TYPE_UVEC2, TYPE_VOID }, TAG_GLOBAL, true },
    1552. 

  1552. 	{ "uvec2", TYPE_UVEC2, { TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, true },
    1553. 

  1553. 

  1554. 	{ "bvec2", TYPE_BVEC2, { TYPE_BVEC2, TYPE_VOID }, TAG_GLOBAL, false },
    1555. 

  1555. 	{ "bvec2", TYPE_BVEC2, { TYPE_IVEC2, TYPE_VOID }, TAG_GLOBAL, false },
    1556. 

  1556. 	{ "bvec2", TYPE_BVEC2, { TYPE_UVEC2, TYPE_VOID }, TAG_GLOBAL, true },
    1557. 

  1557. 	{ "bvec2", TYPE_BVEC2, { TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
    1558. 

  1558. 

  1559. 	{ "ivec3", TYPE_IVEC3, { TYPE_BVEC3, TYPE_VOID }, TAG_GLOBAL, false },
    1560. 

  1560. 	{ "ivec3", TYPE_IVEC3, { TYPE_IVEC3, TYPE_VOID }, TAG_GLOBAL, false },
    1561. 

  1561. 	{ "ivec3", TYPE_IVEC3, { TYPE_UVEC3, TYPE_VOID }, TAG_GLOBAL, true },
    1562. 

  1562. 	{ "ivec3", TYPE_IVEC3, { TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
    1563. 

  1563. 

  1564. 	{ "vec3", TYPE_VEC3, { TYPE_BVEC3, TYPE_VOID }, TAG_GLOBAL, false },
    1565. 

  1565. 	{ "vec3", TYPE_VEC3, { TYPE_IVEC3, TYPE_VOID }, TAG_GLOBAL, false },
    1566. 

  1566. 	{ "vec3", TYPE_VEC3, { TYPE_UVEC3, TYPE_VOID }, TAG_GLOBAL, true },
    1567. 

  1567. 	{ "vec3", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
    1568. 

  1568. 

  1569. 	{ "uvec3", TYPE_UVEC3, { TYPE_BVEC3, TYPE_VOID }, TAG_GLOBAL, true },
    1570. 

  1570. 	{ "uvec3", TYPE_UVEC3, { TYPE_IVEC3, TYPE_VOID }, TAG_GLOBAL, true },
    1571. 

  1571. 	{ "uvec3", TYPE_UVEC3, { TYPE_UVEC3, TYPE_VOID }, TAG_GLOBAL, true },
    1572. 

  1572. 	{ "uvec3", TYPE_UVEC3, { TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, true },
    1573. 

  1573. 

  1574. 	{ "bvec3", TYPE_BVEC3, { TYPE_BVEC3, TYPE_VOID }, TAG_GLOBAL, false },
    1575. 

  1575. 	{ "bvec3", TYPE_BVEC3, { TYPE_IVEC3, TYPE_VOID }, TAG_GLOBAL, false },
    1576. 

  1576. 	{ "bvec3", TYPE_BVEC3, { TYPE_UVEC3, TYPE_VOID }, TAG_GLOBAL, true },
    1577. 

  1577. 	{ "bvec3", TYPE_BVEC3, { TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
    1578. 

  1578. 

  1579. 	{ "ivec4", TYPE_IVEC4, { TYPE_BVEC4, TYPE_VOID }, TAG_GLOBAL, false },
    1580. 

  1580. 	{ "ivec4", TYPE_IVEC4, { TYPE_IVEC4, TYPE_VOID }, TAG_GLOBAL, false },
    1581. 

  1581. 	{ "ivec4", TYPE_IVEC4, { TYPE_UVEC4, TYPE_VOID }, TAG_GLOBAL, true },
    1582. 

  1582. 	{ "ivec4", TYPE_IVEC4, { TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
    1583. 

  1583. 

  1584. 	{ "vec4", TYPE_VEC4, { TYPE_BVEC4, TYPE_VOID }, TAG_GLOBAL, false },
    1585. 

  1585. 	{ "vec4", TYPE_VEC4, { TYPE_IVEC4, TYPE_VOID }, TAG_GLOBAL, false },
    1586. 

  1586. 	{ "vec4", TYPE_VEC4, { TYPE_UVEC4, TYPE_VOID }, TAG_GLOBAL, true },
    1587. 

  1587. 	{ "vec4", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
    1588. 

  1588. 

  1589. 	{ "uvec4", TYPE_UVEC4, { TYPE_BVEC4, TYPE_VOID }, TAG_GLOBAL, true },
    1590. 

  1590. 	{ "uvec4", TYPE_UVEC4, { TYPE_IVEC4, TYPE_VOID }, TAG_GLOBAL, true },
    1591. 

  1591. 	{ "uvec4", TYPE_UVEC4, { TYPE_UVEC4, TYPE_VOID }, TAG_GLOBAL, true },
    1592. 

  1592. 	{ "uvec4", TYPE_UVEC4, { TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, true },
    1593. 

  1593. 

  1594. 	{ "bvec4", TYPE_BVEC4, { TYPE_BVEC4, TYPE_VOID }, TAG_GLOBAL, false },
    1595. 

  1595. 	{ "bvec4", TYPE_BVEC4, { TYPE_IVEC4, TYPE_VOID }, TAG_GLOBAL, false },
    1596. 

  1596. 	{ "bvec4", TYPE_BVEC4, { TYPE_UVEC4, TYPE_VOID }, TAG_GLOBAL, true },
    1597. 

  1597. 	{ "bvec4", TYPE_BVEC4, { TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
    1598. 

  1598. 

  1599. 	//conversion between matrixes
    1600. 

  1600. 

  1601. 	{ "mat2", TYPE_MAT2, { TYPE_MAT3, TYPE_VOID }, TAG_GLOBAL, false },
    1602. 

  1602. 	{ "mat2", TYPE_MAT2, { TYPE_MAT4, TYPE_VOID }, TAG_GLOBAL, false },
    1603. 

  1603. 	{ "mat3", TYPE_MAT3, { TYPE_MAT2, TYPE_VOID }, TAG_GLOBAL, false },
    1604. 

  1604. 	{ "mat3", TYPE_MAT3, { TYPE_MAT4, TYPE_VOID }, TAG_GLOBAL, false },
    1605. 

  1605. 	{ "mat4", TYPE_MAT4, { TYPE_MAT2, TYPE_VOID }, TAG_GLOBAL, false },
    1606. 

  1606. 	{ "mat4", TYPE_MAT4, { TYPE_MAT3, TYPE_VOID }, TAG_GLOBAL, false },
    1607. 

  1607. 

  1608. 	//builtins - trigonometry
    1609. 

  1609. 

  1610. 	{ "radians", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
    1611. 

  1611. 	{ "radians", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
    1612. 

  1612. 	{ "radians", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
    1613. 

  1613. 	{ "radians", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
    1614. 

  1614. 

  1615. 	{ "degrees", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
    1616. 

  1616. 	{ "degrees", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
    1617. 

  1617. 	{ "degrees", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
    1618. 

  1618. 	{ "degrees", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
    1619. 

  1619. 

  1620. 	{ "sin", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
    1621. 

  1621. 	{ "sin", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
    1622. 

  1622. 	{ "sin", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
    1623. 

  1623. 	{ "sin", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
    1624. 

  1624. 

  1625. 	{ "cos", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
    1626. 

  1626. 	{ "cos", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
    1627. 

  1627. 	{ "cos", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
    1628. 

  1628. 	{ "cos", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
    1629. 

  1629. 

  1630. 	{ "tan", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
    1631. 

  1631. 	{ "tan", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
    1632. 

  1632. 	{ "tan", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
    1633. 

  1633. 	{ "tan", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
    1634. 

  1634. 

  1635. 	{ "asin", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
    1636. 

  1636. 	{ "asin", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
    1637. 

  1637. 	{ "asin", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
    1638. 

  1638. 	{ "asin", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
    1639. 

  1639. 

  1640. 	{ "acos", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
    1641. 

  1641. 	{ "acos", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
    1642. 

  1642. 	{ "acos", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
    1643. 

  1643. 	{ "acos", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
    1644. 

  1644. 

  1645. 	{ "atan", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
    1646. 

  1646. 	{ "atan", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
    1647. 

  1647. 	{ "atan", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
    1648. 

  1648. 	{ "atan", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
    1649. 

  1649. 	{ "atan", TYPE_FLOAT, { TYPE_FLOAT, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
    1650. 

  1650. 	{ "atan", TYPE_VEC2, { TYPE_VEC2, TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
    1651. 

  1651. 	{ "atan", TYPE_VEC3, { TYPE_VEC3, TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
    1652. 

  1652. 	{ "atan", TYPE_VEC4, { TYPE_VEC4, TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
    1653. 

  1653. 

  1654. 	{ "sinh", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
    1655. 

  1655. 	{ "sinh", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
    1656. 

  1656. 	{ "sinh", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
    1657. 

  1657. 	{ "sinh", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
    1658. 

  1658. 

  1659. 	{ "cosh", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
    1660. 

  1660. 	{ "cosh", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
    1661. 

  1661. 	{ "cosh", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
    1662. 

  1662. 	{ "cosh", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
    1663. 

  1663. 

  1664. 	{ "tanh", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
    1665. 

  1665. 	{ "tanh", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
    1666. 

  1666. 	{ "tanh", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
    1667. 

  1667. 	{ "tanh", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
    1668. 

  1668. 

  1669. 	{ "asinh", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
    1670. 

  1670. 	{ "asinh", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
    1671. 

  1671. 	{ "asinh", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
    1672. 

  1672. 	{ "asinh", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
    1673. 

  1673. 

  1674. 	{ "acosh", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
    1675. 

  1675. 	{ "acosh", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
    1676. 

  1676. 	{ "acosh", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
    1677. 

  1677. 	{ "acosh", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
    1678. 

  1678. 

  1679. 	{ "atanh", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
    1680. 

  1680. 	{ "atanh", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
    1681. 

  1681. 	{ "atanh", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
    1682. 

  1682. 	{ "atanh", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
    1683. 

  1683. 

  1684. 	//builtins - exponential
    1685. 

  1685. 	{ "pow", TYPE_FLOAT, { TYPE_FLOAT, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
    1686. 

  1686. 	{ "pow", TYPE_VEC2, { TYPE_VEC2, TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
    1687. 

  1687. 	{ "pow", TYPE_VEC3, { TYPE_VEC3, TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
    1688. 

  1688. 	{ "pow", TYPE_VEC4, { TYPE_VEC4, TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
    1689. 

  1689. 	{ "exp", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
    1690. 

  1690. 	{ "exp", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
    1691. 

  1691. 	{ "exp", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
    1692. 

  1692. 	{ "exp", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
    1693. 

  1693. 	{ "log", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
    1694. 

  1694. 	{ "log", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
    1695. 

  1695. 	{ "log", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
    1696. 

  1696. 	{ "log", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
    1697. 

  1697. 	{ "exp2", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
    1698. 

  1698. 	{ "exp2", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
    1699. 

  1699. 	{ "exp2", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
    1700. 

  1700. 	{ "exp2", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
    1701. 

  1701. 	{ "log2", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
    1702. 

  1702. 	{ "log2", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
    1703. 

  1703. 	{ "log2", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
    1704. 

  1704. 	{ "log2", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
    1705. 

  1705. 	{ "sqrt", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
    1706. 

  1706. 	{ "sqrt", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
    1707. 

  1707. 	{ "sqrt", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
    1708. 

  1708. 	{ "sqrt", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
    1709. 

  1709. 	{ "inversesqrt", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
    1710. 

  1710. 	{ "inversesqrt", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
    1711. 

  1711. 	{ "inversesqrt", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
    1712. 

  1712. 	{ "inversesqrt", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
    1713. 

  1713. 	//builtins - common
    1714. 

  1714. 	{ "abs", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
    1715. 

  1715. 	{ "abs", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
    1716. 

  1716. 	{ "abs", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
    1717. 

  1717. 	{ "abs", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
    1718. 

  1718. 

  1719. 	{ "abs", TYPE_INT, { TYPE_INT, TYPE_VOID }, TAG_GLOBAL, false },
    1720. 

  1720. 	{ "abs", TYPE_IVEC2, { TYPE_IVEC2, TYPE_VOID }, TAG_GLOBAL, false },
    1721. 

  1721. 	{ "abs", TYPE_IVEC3, { TYPE_IVEC3, TYPE_VOID }, TAG_GLOBAL, false },
    1722. 

  1722. 	{ "abs", TYPE_IVEC4, { TYPE_IVEC4, TYPE_VOID }, TAG_GLOBAL, false },
    1723. 

  1723. 

  1724. 	{ "sign", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
    1725. 

  1725. 	{ "sign", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
    1726. 

  1726. 	{ "sign", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
    1727. 

  1727. 	{ "sign", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
    1728. 

  1728. 

  1729. 	{ "sign", TYPE_INT, { TYPE_INT, TYPE_VOID }, TAG_GLOBAL, false },
    1730. 

  1730. 	{ "sign", TYPE_IVEC2, { TYPE_IVEC2, TYPE_VOID }, TAG_GLOBAL, false },
    1731. 

  1731. 	{ "sign", TYPE_IVEC3, { TYPE_IVEC3, TYPE_VOID }, TAG_GLOBAL, false },
    1732. 

  1732. 	{ "sign", TYPE_IVEC4, { TYPE_IVEC4, TYPE_VOID }, TAG_GLOBAL, false },
    1733. 

  1733. 

  1734. 	{ "floor", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
    1735. 

  1735. 	{ "floor", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
    1736. 

  1736. 	{ "floor", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
    1737. 

  1737. 	{ "floor", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
    1738. 

  1738. 	{ "trunc", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
    1739. 

  1739. 	{ "trunc", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
    1740. 

  1740. 	{ "trunc", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
    1741. 

  1741. 	{ "trunc", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
    1742. 

  1742. 	{ "round", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
    1743. 

  1743. 	{ "round", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
    1744. 

  1744. 	{ "round", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
    1745. 

  1745. 	{ "round", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
    1746. 

  1746. 	{ "roundEven", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
    1747. 

  1747. 	{ "roundEven", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
    1748. 

  1748. 	{ "roundEven", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
    1749. 

  1749. 	{ "roundEven", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
    1750. 

  1750. 	{ "ceil", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
    1751. 

  1751. 	{ "ceil", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
    1752. 

  1752. 	{ "ceil", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
    1753. 

  1753. 	{ "ceil", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
    1754. 

  1754. 	{ "fract", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
    1755. 

  1755. 	{ "fract", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
    1756. 

  1756. 	{ "fract", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
    1757. 

  1757. 	{ "fract", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
    1758. 

  1758. 

  1759. 	{ "mod", TYPE_FLOAT, { TYPE_FLOAT, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
    1760. 

  1760. 	{ "mod", TYPE_VEC2, { TYPE_VEC2, TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
    1761. 

  1761. 	{ "mod", TYPE_VEC2, { TYPE_VEC2, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
    1762. 

  1762. 	{ "mod", TYPE_VEC3, { TYPE_VEC3, TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
    1763. 

  1763. 	{ "mod", TYPE_VEC3, { TYPE_VEC3, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
    1764. 

  1764. 	{ "mod", TYPE_VEC4, { TYPE_VEC4, TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
    1765. 

  1765. 	{ "mod", TYPE_VEC4, { TYPE_VEC4, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
    1766. 

  1766. 

  1767. 	{ "modf", TYPE_FLOAT, { TYPE_FLOAT, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, true },
    1768. 

  1768. 	{ "modf", TYPE_VEC2, { TYPE_VEC2, TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, true },
    1769. 

  1769. 	{ "modf", TYPE_VEC3, { TYPE_VEC3, TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, true },
    1770. 

  1770. 	{ "modf", TYPE_VEC4, { TYPE_VEC4, TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, true },
    1771. 

  1771. 

  1772. 	{ "min", TYPE_FLOAT, { TYPE_FLOAT, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
    1773. 

  1773. 	{ "min", TYPE_VEC2, { TYPE_VEC2, TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
    1774. 

  1774. 	{ "min", TYPE_VEC2, { TYPE_VEC2, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
    1775. 

  1775. 	{ "min", TYPE_VEC3, { TYPE_VEC3, TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
    1776. 

  1776. 	{ "min", TYPE_VEC3, { TYPE_VEC3, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
    1777. 

  1777. 	{ "min", TYPE_VEC4, { TYPE_VEC4, TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
    1778. 

  1778. 	{ "min", TYPE_VEC4, { TYPE_VEC4, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
    1779. 

  1779. 

  1780. 	{ "min", TYPE_INT, { TYPE_INT, TYPE_INT, TYPE_VOID }, TAG_GLOBAL, false },
    1781. 

  1781. 	{ "min", TYPE_IVEC2, { TYPE_IVEC2, TYPE_IVEC2, TYPE_VOID }, TAG_GLOBAL, false },
    1782. 

  1782. 	{ "min", TYPE_IVEC2, { TYPE_IVEC2, TYPE_INT, TYPE_VOID }, TAG_GLOBAL, false },
    1783. 

  1783. 	{ "min", TYPE_IVEC3, { TYPE_IVEC3, TYPE_IVEC3, TYPE_VOID }, TAG_GLOBAL, false },
    1784. 

  1784. 	{ "min", TYPE_IVEC3, { TYPE_IVEC3, TYPE_INT, TYPE_VOID }, TAG_GLOBAL, false },
    1785. 

  1785. 	{ "min", TYPE_IVEC4, { TYPE_IVEC4, TYPE_IVEC4, TYPE_VOID }, TAG_GLOBAL, false },
    1786. 

  1786. 	{ "min", TYPE_IVEC4, { TYPE_IVEC4, TYPE_INT, TYPE_VOID }, TAG_GLOBAL, false },
    1787. 

  1787. 

  1788. 	{ "min", TYPE_UINT, { TYPE_UINT, TYPE_UINT, TYPE_VOID }, TAG_GLOBAL, true },
    1789. 

  1789. 	{ "min", TYPE_UVEC2, { TYPE_UVEC2, TYPE_UVEC2, TYPE_VOID }, TAG_GLOBAL, true },
    1790. 

  1790. 	{ "min", TYPE_UVEC2, { TYPE_UVEC2, TYPE_UINT, TYPE_VOID }, TAG_GLOBAL, true },
    1791. 

  1791. 	{ "min", TYPE_UVEC3, { TYPE_UVEC3, TYPE_UVEC3, TYPE_VOID }, TAG_GLOBAL, true },
    1792. 

  1792. 	{ "min", TYPE_UVEC3, { TYPE_UVEC3, TYPE_UINT, TYPE_VOID }, TAG_GLOBAL, true },
    1793. 

  1793. 	{ "min", TYPE_UVEC4, { TYPE_UVEC4, TYPE_UVEC4, TYPE_VOID }, TAG_GLOBAL, true },
    1794. 

  1794. 	{ "min", TYPE_UVEC4, { TYPE_UVEC4, TYPE_UINT, TYPE_VOID }, TAG_GLOBAL, true },
    1795. 

  1795. 

  1796. 	{ "max", TYPE_FLOAT, { TYPE_FLOAT, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
    1797. 

  1797. 	{ "max", TYPE_VEC2, { TYPE_VEC2, TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
    1798. 

  1798. 	{ "max", TYPE_VEC2, { TYPE_VEC2, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
    1799. 

  1799. 	{ "max", TYPE_VEC3, { TYPE_VEC3, TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
    1800. 

  1800. 	{ "max", TYPE_VEC3, { TYPE_VEC3, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
    1801. 

  1801. 	{ "max", TYPE_VEC4, { TYPE_VEC4, TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
    1802. 

  1802. 	{ "max", TYPE_VEC4, { TYPE_VEC4, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
    1803. 

  1803. 

  1804. 	{ "max", TYPE_INT, { TYPE_INT, TYPE_INT, TYPE_VOID }, TAG_GLOBAL, false },
    1805. 

  1805. 	{ "max", TYPE_IVEC2, { TYPE_IVEC2, TYPE_IVEC2, TYPE_VOID }, TAG_GLOBAL, false },
    1806. 

  1806. 	{ "max", TYPE_IVEC2, { TYPE_IVEC2, TYPE_INT, TYPE_VOID }, TAG_GLOBAL, false },
    1807. 

  1807. 	{ "max", TYPE_IVEC3, { TYPE_IVEC3, TYPE_IVEC3, TYPE_VOID }, TAG_GLOBAL, false },
    1808. 

  1808. 	{ "max", TYPE_IVEC3, { TYPE_IVEC3, TYPE_INT, TYPE_VOID }, TAG_GLOBAL, false },
    1809. 

  1809. 	{ "max", TYPE_IVEC4, { TYPE_IVEC4, TYPE_IVEC4, TYPE_VOID }, TAG_GLOBAL, false },
    1810. 

  1810. 	{ "max", TYPE_IVEC4, { TYPE_IVEC4, TYPE_INT, TYPE_VOID }, TAG_GLOBAL, false },
    1811. 

  1811. 

  1812. 	{ "max", TYPE_UINT, { TYPE_UINT, TYPE_UINT, TYPE_VOID }, TAG_GLOBAL, true },
    1813. 

  1813. 	{ "max", TYPE_UVEC2, { TYPE_UVEC2, TYPE_UVEC2, TYPE_VOID }, TAG_GLOBAL, true },
    1814. 

  1814. 	{ "max", TYPE_UVEC2, { TYPE_UVEC2, TYPE_UINT, TYPE_VOID }, TAG_GLOBAL, true },
    1815. 

  1815. 	{ "max", TYPE_UVEC3, { TYPE_UVEC3, TYPE_UVEC3, TYPE_VOID }, TAG_GLOBAL, true },
    1816. 

  1816. 	{ "max", TYPE_UVEC3, { TYPE_UVEC3, TYPE_UINT, TYPE_VOID }, TAG_GLOBAL, true },
    1817. 

  1817. 	{ "max", TYPE_UVEC4, { TYPE_UVEC4, TYPE_UVEC4, TYPE_VOID }, TAG_GLOBAL, true },
    1818. 

  1818. 	{ "max", TYPE_UVEC4, { TYPE_UVEC4, TYPE_UINT, TYPE_VOID }, TAG_GLOBAL, true },
    1819. 

  1819. 

  1820. 	{ "clamp", TYPE_FLOAT, { TYPE_FLOAT, TYPE_FLOAT, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
    1821. 

  1821. 	{ "clamp", TYPE_VEC2, { TYPE_VEC2, TYPE_VEC2, TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
    1822. 

  1822. 	{ "clamp", TYPE_VEC3, { TYPE_VEC3, TYPE_VEC3, TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
    1823. 

  1823. 	{ "clamp", TYPE_VEC4, { TYPE_VEC4, TYPE_VEC4, TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
    1824. 

  1824. 	{ "clamp", TYPE_VEC2, { TYPE_VEC2, TYPE_FLOAT, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
    1825. 

  1825. 	{ "clamp", TYPE_VEC3, { TYPE_VEC3, TYPE_FLOAT, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
    1826. 

  1826. 	{ "clamp", TYPE_VEC4, { TYPE_VEC4, TYPE_FLOAT, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
    1827. 

  1827. 

  1828. 	{ "clamp", TYPE_INT, { TYPE_INT, TYPE_INT, TYPE_INT, TYPE_VOID }, TAG_GLOBAL, false },
    1829. 

  1829. 	{ "clamp", TYPE_IVEC2, { TYPE_IVEC2, TYPE_IVEC2, TYPE_IVEC2, TYPE_VOID }, TAG_GLOBAL, false },
    1830. 

  1830. 	{ "clamp", TYPE_IVEC3, { TYPE_IVEC3, TYPE_IVEC3, TYPE_IVEC3, TYPE_VOID }, TAG_GLOBAL, false },
    1831. 

  1831. 	{ "clamp", TYPE_IVEC4, { TYPE_IVEC4, TYPE_IVEC4, TYPE_IVEC4, TYPE_VOID }, TAG_GLOBAL, false },
    1832. 

  1832. 	{ "clamp", TYPE_IVEC2, { TYPE_IVEC2, TYPE_INT, TYPE_INT, TYPE_VOID }, TAG_GLOBAL, false },
    1833. 

  1833. 	{ "clamp", TYPE_IVEC3, { TYPE_IVEC3, TYPE_INT, TYPE_INT, TYPE_VOID }, TAG_GLOBAL, false },
    1834. 

  1834. 	{ "clamp", TYPE_IVEC4, { TYPE_IVEC4, TYPE_INT, TYPE_INT, TYPE_VOID }, TAG_GLOBAL, false },
    1835. 

  1835. 

  1836. 	{ "clamp", TYPE_UINT, { TYPE_UINT, TYPE_UINT, TYPE_UINT, TYPE_VOID }, TAG_GLOBAL, true },
    1837. 

  1837. 	{ "clamp", TYPE_UVEC2, { TYPE_UVEC2, TYPE_UVEC2, TYPE_UVEC2, TYPE_VOID }, TAG_GLOBAL, true },
    1838. 

  1838. 	{ "clamp", TYPE_UVEC3, { TYPE_UVEC3, TYPE_UVEC3, TYPE_UVEC3, TYPE_VOID }, TAG_GLOBAL, true },
    1839. 

  1839. 	{ "clamp", TYPE_UVEC4, { TYPE_UVEC4, TYPE_UVEC4, TYPE_UVEC4, TYPE_VOID }, TAG_GLOBAL, true },
    1840. 

  1840. 	{ "clamp", TYPE_UVEC2, { TYPE_UVEC2, TYPE_UINT, TYPE_UINT, TYPE_VOID }, TAG_GLOBAL, true },
    1841. 

  1841. 	{ "clamp", TYPE_UVEC3, { TYPE_UVEC3, TYPE_UINT, TYPE_UINT, TYPE_VOID }, TAG_GLOBAL, true },
    1842. 

  1842. 	{ "clamp", TYPE_UVEC4, { TYPE_UVEC4, TYPE_UINT, TYPE_UINT, TYPE_VOID }, TAG_GLOBAL, true },
    1843. 

  1843. 

  1844. 	{ "mix", TYPE_FLOAT, { TYPE_FLOAT, TYPE_FLOAT, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
    1845. 

  1845. 	{ "mix", TYPE_VEC2, { TYPE_VEC2, TYPE_VEC2, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
    1846. 

  1846. 	{ "mix", TYPE_VEC2, { TYPE_VEC2, TYPE_VEC2, TYPE_BVEC2, TYPE_VOID }, TAG_GLOBAL, false },
    1847. 

  1847. 	{ "mix", TYPE_VEC2, { TYPE_VEC2, TYPE_VEC2, TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
    1848. 

  1848. 	{ "mix", TYPE_VEC3, { TYPE_VEC3, TYPE_VEC3, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
    1849. 

  1849. 	{ "mix", TYPE_VEC3, { TYPE_VEC3, TYPE_VEC3, TYPE_BVEC3, TYPE_VOID }, TAG_GLOBAL, false },
    1850. 

  1850. 	{ "mix", TYPE_VEC3, { TYPE_VEC3, TYPE_VEC3, TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
    1851. 

  1851. 	{ "mix", TYPE_VEC4, { TYPE_VEC4, TYPE_VEC4, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
    1852. 

  1852. 	{ "mix", TYPE_VEC4, { TYPE_VEC4, TYPE_VEC4, TYPE_BVEC4, TYPE_VOID }, TAG_GLOBAL, false },
    1853. 

  1853. 	{ "mix", TYPE_VEC4, { TYPE_VEC4, TYPE_VEC4, TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
    1854. 

  1854. 

  1855. 	{ "step", TYPE_FLOAT, { TYPE_FLOAT, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
    1856. 

  1856. 	{ "step", TYPE_VEC2, { TYPE_VEC2, TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
    1857. 

  1857. 	{ "step", TYPE_VEC3, { TYPE_VEC3, TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
    1858. 

  1858. 	{ "step", TYPE_VEC4, { TYPE_VEC4, TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
    1859. 

  1859. 	{ "step", TYPE_VEC2, { TYPE_FLOAT, TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
    1860. 

  1860. 	{ "step", TYPE_VEC3, { TYPE_FLOAT, TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
    1861. 

  1861. 	{ "step", TYPE_VEC4, { TYPE_FLOAT, TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
    1862. 

  1862. 	{ "smoothstep", TYPE_FLOAT, { TYPE_FLOAT, TYPE_FLOAT, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
    1863. 

  1863. 	{ "smoothstep", TYPE_VEC2, { TYPE_VEC2, TYPE_VEC2, TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
    1864. 

  1864. 	{ "smoothstep", TYPE_VEC3, { TYPE_VEC3, TYPE_VEC3, TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
    1865. 

  1865. 	{ "smoothstep", TYPE_VEC4, { TYPE_VEC4, TYPE_VEC4, TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
    1866. 

  1866. 	{ "smoothstep", TYPE_VEC2, { TYPE_FLOAT, TYPE_FLOAT, TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
    1867. 

  1867. 	{ "smoothstep", TYPE_VEC3, { TYPE_FLOAT, TYPE_FLOAT, TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
    1868. 

  1868. 	{ "smoothstep", TYPE_VEC4, { TYPE_FLOAT, TYPE_FLOAT, TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
    1869. 

  1869. 

  1870. 	{ "isnan", TYPE_BOOL, { TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
    1871. 

  1871. 	{ "isnan", TYPE_BVEC2, { TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
    1872. 

  1872. 	{ "isnan", TYPE_BVEC3, { TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
    1873. 

  1873. 	{ "isnan", TYPE_BVEC4, { TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
    1874. 

  1874. 

  1875. 	{ "isinf", TYPE_BOOL, { TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
    1876. 

  1876. 	{ "isinf", TYPE_BVEC2, { TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
    1877. 

  1877. 	{ "isinf", TYPE_BVEC3, { TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
    1878. 

  1878. 	{ "isinf", TYPE_BVEC4, { TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
    1879. 

  1879. 

  1880. 	{ "floatBitsToInt", TYPE_INT, { TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, true },
    1881. 

  1881. 	{ "floatBitsToInt", TYPE_IVEC2, { TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, true },
    1882. 

  1882. 	{ "floatBitsToInt", TYPE_IVEC3, { TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, true },
    1883. 

  1883. 	{ "floatBitsToInt", TYPE_IVEC4, { TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, true },
    1884. 

  1884. 

  1885. 	{ "floatBitsToUint", TYPE_UINT, { TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, true },
    1886. 

  1886. 	{ "floatBitsToUint", TYPE_UVEC2, { TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, true },
    1887. 

  1887. 	{ "floatBitsToUint", TYPE_UVEC3, { TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, true },
    1888. 

  1888. 	{ "floatBitsToUint", TYPE_UVEC4, { TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, true },
    1889. 

  1889. 

  1890. 	{ "intBitsToFloat", TYPE_FLOAT, { TYPE_INT, TYPE_VOID }, TAG_GLOBAL, true },
    1891. 

  1891. 	{ "intBitsToFloat", TYPE_VEC2, { TYPE_IVEC2, TYPE_VOID }, TAG_GLOBAL, true },
    1892. 

  1892. 	{ "intBitsToFloat", TYPE_VEC3, { TYPE_IVEC3, TYPE_VOID }, TAG_GLOBAL, true },
    1893. 

  1893. 	{ "intBitsToFloat", TYPE_VEC4, { TYPE_IVEC4, TYPE_VOID }, TAG_GLOBAL, true },
    1894. 

  1894. 

  1895. 	{ "uintBitsToFloat", TYPE_FLOAT, { TYPE_UINT, TYPE_VOID }, TAG_GLOBAL, true },
    1896. 

  1896. 	{ "uintBitsToFloat", TYPE_VEC2, { TYPE_UVEC2, TYPE_VOID }, TAG_GLOBAL, true },
    1897. 

  1897. 	{ "uintBitsToFloat", TYPE_VEC3, { TYPE_UVEC3, TYPE_VOID }, TAG_GLOBAL, true },
    1898. 

  1898. 	{ "uintBitsToFloat", TYPE_VEC4, { TYPE_UVEC4, TYPE_VOID }, TAG_GLOBAL, true },
    1899. 

  1899. 

  1900. 	//builtins - geometric
    1901. 

  1901. 	{ "length", TYPE_FLOAT, { TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
    1902. 

  1902. 	{ "length", TYPE_FLOAT, { TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
    1903. 

  1903. 	{ "length", TYPE_FLOAT, { TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
    1904. 

  1904. 	{ "distance", TYPE_FLOAT, { TYPE_VEC2, TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
    1905. 

  1905. 	{ "distance", TYPE_FLOAT, { TYPE_VEC3, TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
    1906. 

  1906. 	{ "distance", TYPE_FLOAT, { TYPE_VEC4, TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
    1907. 

  1907. 	{ "dot", TYPE_FLOAT, { TYPE_VEC2, TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
    1908. 

  1908. 	{ "dot", TYPE_FLOAT, { TYPE_VEC3, TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
    1909. 

  1909. 	{ "dot", TYPE_FLOAT, { TYPE_VEC4, TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
    1910. 

  1910. 	{ "cross", TYPE_VEC3, { TYPE_VEC3, TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
    1911. 

  1911. 	{ "normalize", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
    1912. 

  1912. 	{ "normalize", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
    1913. 

  1913. 	{ "normalize", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
    1914. 

  1914. 	{ "reflect", TYPE_VEC3, { TYPE_VEC3, TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
    1915. 

  1915. 	{ "refract", TYPE_VEC3, { TYPE_VEC3, TYPE_VEC3, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
    1916. 

  1916. 

  1917. 	{ "faceforward", TYPE_VEC2, { TYPE_VEC2, TYPE_VEC2, TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
    1918. 

  1918. 	{ "faceforward", TYPE_VEC3, { TYPE_VEC3, TYPE_VEC3, TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
    1919. 

  1919. 	{ "faceforward", TYPE_VEC4, { TYPE_VEC4, TYPE_VEC4, TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
    1920. 

  1920. 

  1921. 	{ "matrixCompMult", TYPE_MAT2, { TYPE_MAT2, TYPE_MAT2, TYPE_VOID }, TAG_GLOBAL, false },
    1922. 

  1922. 	{ "matrixCompMult", TYPE_MAT3, { TYPE_MAT3, TYPE_MAT3, TYPE_VOID }, TAG_GLOBAL, false },
    1923. 

  1923. 	{ "matrixCompMult", TYPE_MAT4, { TYPE_MAT4, TYPE_MAT4, TYPE_VOID }, TAG_GLOBAL, false },
    1924. 

  1924. 

  1925. 	{ "outerProduct", TYPE_MAT2, { TYPE_VEC2, TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
    1926. 

  1926. 	{ "outerProduct", TYPE_MAT3, { TYPE_VEC3, TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
    1927. 

  1927. 	{ "outerProduct", TYPE_MAT4, { TYPE_VEC4, TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
    1928. 

  1928. 

  1929. 	{ "transpose", TYPE_MAT2, { TYPE_MAT2, TYPE_VOID }, TAG_GLOBAL, false },
    1930. 

  1930. 	{ "transpose", TYPE_MAT3, { TYPE_MAT3, TYPE_VOID }, TAG_GLOBAL, false },
    1931. 

  1931. 	{ "transpose", TYPE_MAT4, { TYPE_MAT4, TYPE_VOID }, TAG_GLOBAL, false },
    1932. 

  1932. 

  1933. 	{ "determinant", TYPE_FLOAT, { TYPE_MAT2, TYPE_VOID }, TAG_GLOBAL, false },
    1934. 

  1934. 	{ "determinant", TYPE_FLOAT, { TYPE_MAT3, TYPE_VOID }, TAG_GLOBAL, false },
    1935. 

  1935. 	{ "determinant", TYPE_FLOAT, { TYPE_MAT4, TYPE_VOID }, TAG_GLOBAL, false },
    1936. 

  1936. 

  1937. 	{ "inverse", TYPE_MAT2, { TYPE_MAT2, TYPE_VOID }, TAG_GLOBAL, false },
    1938. 

  1938. 	{ "inverse", TYPE_MAT3, { TYPE_MAT3, TYPE_VOID }, TAG_GLOBAL, false },
    1939. 

  1939. 	{ "inverse", TYPE_MAT4, { TYPE_MAT4, TYPE_VOID }, TAG_GLOBAL, false },
    1940. 

  1940. 

  1941. 	{ "lessThan", TYPE_BVEC2, { TYPE_VEC2, TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
    1942. 

  1942. 	{ "lessThan", TYPE_BVEC3, { TYPE_VEC3, TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
    1943. 

  1943. 	{ "lessThan", TYPE_BVEC4, { TYPE_VEC4, TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
    1944. 

  1944. 

  1945. 	{ "lessThan", TYPE_BVEC2, { TYPE_IVEC2, TYPE_IVEC2, TYPE_VOID }, TAG_GLOBAL, false },
    1946. 

  1946. 	{ "lessThan", TYPE_BVEC3, { TYPE_IVEC3, TYPE_IVEC3, TYPE_VOID }, TAG_GLOBAL, false },
    1947. 

  1947. 	{ "lessThan", TYPE_BVEC4, { TYPE_IVEC4, TYPE_IVEC4, TYPE_VOID }, TAG_GLOBAL, false },
    1948. 

  1948. 

  1949. 	{ "lessThan", TYPE_BVEC2, { TYPE_UVEC2, TYPE_UVEC2, TYPE_VOID }, TAG_GLOBAL, true },
    1950. 

  1950. 	{ "lessThan", TYPE_BVEC3, { TYPE_UVEC3, TYPE_UVEC3, TYPE_VOID }, TAG_GLOBAL, true },
    1951. 

  1951. 	{ "lessThan", TYPE_BVEC4, { TYPE_UVEC4, TYPE_UVEC4, TYPE_VOID }, TAG_GLOBAL, true },
    1952. 

  1952. 

  1953. 	{ "greaterThan", TYPE_BVEC2, { TYPE_VEC2, TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
    1954. 

  1954. 	{ "greaterThan", TYPE_BVEC3, { TYPE_VEC3, TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
    1955. 

  1955. 	{ "greaterThan", TYPE_BVEC4, { TYPE_VEC4, TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
    1956. 

  1956. 

  1957. 	{ "greaterThan", TYPE_BVEC2, { TYPE_IVEC2, TYPE_IVEC2, TYPE_VOID }, TAG_GLOBAL, false },
    1958. 

  1958. 	{ "greaterThan", TYPE_BVEC3, { TYPE_IVEC3, TYPE_IVEC3, TYPE_VOID }, TAG_GLOBAL, false },
    1959. 

  1959. 	{ "greaterThan", TYPE_BVEC4, { TYPE_IVEC4, TYPE_IVEC4, TYPE_VOID }, TAG_GLOBAL, false },
    1960. 

  1960. 

  1961. 	{ "greaterThan", TYPE_BVEC2, { TYPE_UVEC2, TYPE_UVEC2, TYPE_VOID }, TAG_GLOBAL, true },
    1962. 

  1962. 	{ "greaterThan", TYPE_BVEC3, { TYPE_UVEC3, TYPE_UVEC3, TYPE_VOID }, TAG_GLOBAL, true },
    1963. 

  1963. 	{ "greaterThan", TYPE_BVEC4, { TYPE_UVEC4, TYPE_UVEC4, TYPE_VOID }, TAG_GLOBAL, true },
    1964. 

  1964. 

  1965. 	{ "lessThanEqual", TYPE_BVEC2, { TYPE_VEC2, TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
    1966. 

  1966. 	{ "lessThanEqual", TYPE_BVEC3, { TYPE_VEC3, TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
    1967. 

  1967. 	{ "lessThanEqual", TYPE_BVEC4, { TYPE_VEC4, TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
    1968. 

  1968. 

  1969. 	{ "lessThanEqual", TYPE_BVEC2, { TYPE_IVEC2, TYPE_IVEC2, TYPE_VOID }, TAG_GLOBAL, false },
    1970. 

  1970. 	{ "lessThanEqual", TYPE_BVEC3, { TYPE_IVEC3, TYPE_IVEC3, TYPE_VOID }, TAG_GLOBAL, false },
    1971. 

  1971. 	{ "lessThanEqual", TYPE_BVEC4, { TYPE_IVEC4, TYPE_IVEC4, TYPE_VOID }, TAG_GLOBAL, false },
    1972. 

  1972. 

  1973. 	{ "lessThanEqual", TYPE_BVEC2, { TYPE_UVEC2, TYPE_UVEC2, TYPE_VOID }, TAG_GLOBAL, true },
    1974. 

  1974. 	{ "lessThanEqual", TYPE_BVEC3, { TYPE_UVEC3, TYPE_UVEC3, TYPE_VOID }, TAG_GLOBAL, true },
    1975. 

  1975. 	{ "lessThanEqual", TYPE_BVEC4, { TYPE_UVEC4, TYPE_UVEC4, TYPE_VOID }, TAG_GLOBAL, true },
    1976. 

  1976. 

  1977. 	{ "greaterThanEqual", TYPE_BVEC2, { TYPE_VEC2, TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
    1978. 

  1978. 	{ "greaterThanEqual", TYPE_BVEC3, { TYPE_VEC3, TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
    1979. 

  1979. 	{ "greaterThanEqual", TYPE_BVEC4, { TYPE_VEC4, TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
    1980. 

  1980. 

  1981. 	{ "greaterThanEqual", TYPE_BVEC2, { TYPE_IVEC2, TYPE_IVEC2, TYPE_VOID }, TAG_GLOBAL, false },
    1982. 

  1982. 	{ "greaterThanEqual", TYPE_BVEC3, { TYPE_IVEC3, TYPE_IVEC3, TYPE_VOID }, TAG_GLOBAL, false },
    1983. 

  1983. 	{ "greaterThanEqual", TYPE_BVEC4, { TYPE_IVEC4, TYPE_IVEC4, TYPE_VOID }, TAG_GLOBAL, false },
    1984. 

  1984. 

  1985. 	{ "greaterThanEqual", TYPE_BVEC2, { TYPE_UVEC2, TYPE_UVEC2, TYPE_VOID }, TAG_GLOBAL, true },
    1986. 

  1986. 	{ "greaterThanEqual", TYPE_BVEC3, { TYPE_UVEC3, TYPE_UVEC3, TYPE_VOID }, TAG_GLOBAL, true },
    1987. 

  1987. 	{ "greaterThanEqual", TYPE_BVEC4, { TYPE_UVEC4, TYPE_UVEC4, TYPE_VOID }, TAG_GLOBAL, true },
    1988. 

  1988. 

  1989. 	{ "equal", TYPE_BVEC2, { TYPE_VEC2, TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
    1990. 

  1990. 	{ "equal", TYPE_BVEC3, { TYPE_VEC3, TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
    1991. 

  1991. 	{ "equal", TYPE_BVEC4, { TYPE_VEC4, TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
    1992. 

  1992. 

  1993. 	{ "equal", TYPE_BVEC2, { TYPE_IVEC2, TYPE_IVEC2, TYPE_VOID }, TAG_GLOBAL, false },
    1994. 

  1994. 	{ "equal", TYPE_BVEC3, { TYPE_IVEC3, TYPE_IVEC3, TYPE_VOID }, TAG_GLOBAL, false },
    1995. 

  1995. 	{ "equal", TYPE_BVEC4, { TYPE_IVEC4, TYPE_IVEC4, TYPE_VOID }, TAG_GLOBAL, false },
    1996. 

  1996. 

  1997. 	{ "equal", TYPE_BVEC2, { TYPE_UVEC2, TYPE_UVEC2, TYPE_VOID }, TAG_GLOBAL, true },
    1998. 

  1998. 	{ "equal", TYPE_BVEC3, { TYPE_UVEC3, TYPE_UVEC3, TYPE_VOID }, TAG_GLOBAL, true },
    1999. 

  1999. 	{ "equal", TYPE_BVEC4, { TYPE_UVEC4, TYPE_UVEC4, TYPE_VOID }, TAG_GLOBAL, true },
    2000. 

  2000. 

  2001. 	{ "equal", TYPE_BVEC2, { TYPE_BVEC2, TYPE_BVEC2, TYPE_VOID }, TAG_GLOBAL, false },
    2002. 

  2002. 	{ "equal", TYPE_BVEC3, { TYPE_BVEC3, TYPE_BVEC3, TYPE_VOID }, TAG_GLOBAL, false },
    2003. 

  2003. 	{ "equal", TYPE_BVEC4, { TYPE_BVEC4, TYPE_BVEC4, TYPE_VOID }, TAG_GLOBAL, false },
    2004. 

  2004. 

  2005. 	{ "notEqual", TYPE_BVEC2, { TYPE_VEC2, TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
    2006. 

  2006. 	{ "notEqual", TYPE_BVEC3, { TYPE_VEC3, TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
    2007. 

  2007. 	{ "notEqual", TYPE_BVEC4, { TYPE_VEC4, TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
    2008. 

  2008. 

  2009. 	{ "notEqual", TYPE_BVEC2, { TYPE_IVEC2, TYPE_IVEC2, TYPE_VOID }, TAG_GLOBAL, false },
    2010. 

  2010. 	{ "notEqual", TYPE_BVEC3, { TYPE_IVEC3, TYPE_IVEC3, TYPE_VOID }, TAG_GLOBAL, false },
    2011. 

  2011. 	{ "notEqual", TYPE_BVEC4, { TYPE_IVEC4, TYPE_IVEC4, TYPE_VOID }, TAG_GLOBAL, false },
    2012. 

  2012. 

  2013. 	{ "notEqual", TYPE_BVEC2, { TYPE_UVEC2, TYPE_UVEC2, TYPE_VOID }, TAG_GLOBAL, true },
    2014. 

  2014. 	{ "notEqual", TYPE_BVEC3, { TYPE_UVEC3, TYPE_UVEC3, TYPE_VOID }, TAG_GLOBAL, true },
    2015. 

  2015. 	{ "notEqual", TYPE_BVEC4, { TYPE_UVEC4, TYPE_UVEC4, TYPE_VOID }, TAG_GLOBAL, true },
    2016. 

  2016. 

  2017. 	{ "notEqual", TYPE_BVEC2, { TYPE_BVEC2, TYPE_BVEC2, TYPE_VOID }, TAG_GLOBAL, false },
    2018. 

  2018. 	{ "notEqual", TYPE_BVEC3, { TYPE_BVEC3, TYPE_BVEC3, TYPE_VOID }, TAG_GLOBAL, false },
    2019. 

  2019. 	{ "notEqual", TYPE_BVEC4, { TYPE_BVEC4, TYPE_BVEC4, TYPE_VOID }, TAG_GLOBAL, false },
    2020. 

  2020. 

  2021. 	{ "any", TYPE_BOOL, { TYPE_BVEC2, TYPE_VOID }, TAG_GLOBAL, false },
    2022. 

  2022. 	{ "any", TYPE_BOOL, { TYPE_BVEC3, TYPE_VOID }, TAG_GLOBAL, false },
    2023. 

  2023. 	{ "any", TYPE_BOOL, { TYPE_BVEC4, TYPE_VOID }, TAG_GLOBAL, false },
    2024. 

  2024. 

  2025. 	{ "all", TYPE_BOOL, { TYPE_BVEC2, TYPE_VOID }, TAG_GLOBAL, false },
    2026. 

  2026. 	{ "all", TYPE_BOOL, { TYPE_BVEC3, TYPE_VOID }, TAG_GLOBAL, false },
    2027. 

  2027. 	{ "all", TYPE_BOOL, { TYPE_BVEC4, TYPE_VOID }, TAG_GLOBAL, false },
    2028. 

  2028. 

  2029. 	{ "not", TYPE_BVEC2, { TYPE_BVEC2, TYPE_VOID }, TAG_GLOBAL, false },
    2030. 

  2030. 	{ "not", TYPE_BVEC3, { TYPE_BVEC3, TYPE_VOID }, TAG_GLOBAL, false },
    2031. 

  2031. 	{ "not", TYPE_BVEC4, { TYPE_BVEC4, TYPE_VOID }, TAG_GLOBAL, false },
    2032. 

  2032. 

  2033. 	//builtins - texture
    2034. 

  2034. 	{ "textureSize", TYPE_IVEC2, { TYPE_SAMPLER2D, TYPE_INT, TYPE_VOID }, TAG_GLOBAL, true },
    2035. 

  2035. 	{ "textureSize", TYPE_IVEC2, { TYPE_ISAMPLER2D, TYPE_INT, TYPE_VOID }, TAG_GLOBAL, true },
    2036. 

  2036. 	{ "textureSize", TYPE_IVEC2, { TYPE_USAMPLER2D, TYPE_INT, TYPE_VOID }, TAG_GLOBAL, true },
    2037. 

  2037. 	{ "textureSize", TYPE_IVEC3, { TYPE_SAMPLER2DARRAY, TYPE_INT, TYPE_VOID }, TAG_GLOBAL, true },
    2038. 

  2038. 	{ "textureSize", TYPE_IVEC3, { TYPE_ISAMPLER2DARRAY, TYPE_INT, TYPE_VOID }, TAG_GLOBAL, true },
    2039. 

  2039. 	{ "textureSize", TYPE_IVEC3, { TYPE_USAMPLER2DARRAY, TYPE_INT, TYPE_VOID }, TAG_GLOBAL, true },
    2040. 

  2040. 	{ "textureSize", TYPE_IVEC3, { TYPE_SAMPLER3D, TYPE_INT, TYPE_VOID }, TAG_GLOBAL, true },
    2041. 

  2041. 	{ "textureSize", TYPE_IVEC3, { TYPE_ISAMPLER3D, TYPE_INT, TYPE_VOID }, TAG_GLOBAL, true },
    2042. 

  2042. 	{ "textureSize", TYPE_IVEC3, { TYPE_USAMPLER3D, TYPE_INT, TYPE_VOID }, TAG_GLOBAL, true },
    2043. 

  2043. 	{ "textureSize", TYPE_IVEC2, { TYPE_SAMPLERCUBE, TYPE_INT, TYPE_VOID }, TAG_GLOBAL, true },
    2044. 

  2044. 	{ "textureSize", TYPE_IVEC2, { TYPE_SAMPLERCUBEARRAY, TYPE_INT, TYPE_VOID }, TAG_GLOBAL, true },
    2045. 

  2045. 

  2046. 	{ "texture", TYPE_VEC4, { TYPE_SAMPLER2D, TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
    2047. 

  2047. 	{ "texture", TYPE_VEC4, { TYPE_SAMPLER2D, TYPE_VEC2, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
    2048. 

  2048. 	{ "texture", TYPE_UVEC4, { TYPE_USAMPLER2D, TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, true },
    2049. 

  2049. 	{ "texture", TYPE_UVEC4, { TYPE_USAMPLER2D, TYPE_VEC2, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, true },
    2050. 

  2050. 	{ "texture", TYPE_IVEC4, { TYPE_ISAMPLER2D, TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, true },
    2051. 

  2051. 	{ "texture", TYPE_IVEC4, { TYPE_ISAMPLER2D, TYPE_VEC2, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, true },
    2052. 

  2052. 	{ "texture", TYPE_VEC4, { TYPE_SAMPLER2DARRAY, TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
    2053. 

  2053. 	{ "texture", TYPE_VEC4, { TYPE_SAMPLER2DARRAY, TYPE_VEC3, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
    2054. 

  2054. 	{ "texture", TYPE_UVEC4, { TYPE_USAMPLER2DARRAY, TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, true },
    2055. 

  2055. 	{ "texture", TYPE_UVEC4, { TYPE_USAMPLER2DARRAY, TYPE_VEC3, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, true },
    2056. 

  2056. 	{ "texture", TYPE_IVEC4, { TYPE_ISAMPLER2DARRAY, TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, true },
    2057. 

  2057. 	{ "texture", TYPE_IVEC4, { TYPE_ISAMPLER2DARRAY, TYPE_VEC3, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, true },
    2058. 

  2058. 	{ "texture", TYPE_VEC4, { TYPE_SAMPLER3D, TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
    2059. 

  2059. 	{ "texture", TYPE_VEC4, { TYPE_SAMPLER3D, TYPE_VEC3, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
    2060. 

  2060. 	{ "texture", TYPE_UVEC4, { TYPE_USAMPLER3D, TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, true },
    2061. 

  2061. 	{ "texture", TYPE_UVEC4, { TYPE_USAMPLER3D, TYPE_VEC3, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, true },
    2062. 

  2062. 	{ "texture", TYPE_IVEC4, { TYPE_ISAMPLER3D, TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, true },
    2063. 

  2063. 	{ "texture", TYPE_IVEC4, { TYPE_ISAMPLER3D, TYPE_VEC3, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, true },
    2064. 

  2064. 	{ "texture", TYPE_VEC4, { TYPE_SAMPLERCUBE, TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
    2065. 

  2065. 	{ "texture", TYPE_VEC4, { TYPE_SAMPLERCUBE, TYPE_VEC3, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
    2066. 

  2066. 	{ "texture", TYPE_VEC4, { TYPE_SAMPLERCUBEARRAY, TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
    2067. 

  2067. 	{ "texture", TYPE_VEC4, { TYPE_SAMPLERCUBEARRAY, TYPE_VEC4, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
    2068. 

  2068. 

  2069. 	{ "textureProj", TYPE_VEC4, { TYPE_SAMPLER2D, TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, true },
    2070. 

  2070. 	{ "textureProj", TYPE_VEC4, { TYPE_SAMPLER2D, TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, true },
    2071. 

  2071. 	{ "textureProj", TYPE_VEC4, { TYPE_SAMPLER2D, TYPE_VEC3, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, true },
    2072. 

  2072. 	{ "textureProj", TYPE_VEC4, { TYPE_SAMPLER2D, TYPE_VEC4, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, true },
    2073. 

  2073. 	{ "textureProj", TYPE_IVEC4, { TYPE_ISAMPLER2D, TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, true },
    2074. 

  2074. 	{ "textureProj", TYPE_IVEC4, { TYPE_ISAMPLER2D, TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, true },
    2075. 

  2075. 	{ "textureProj", TYPE_IVEC4, { TYPE_ISAMPLER2D, TYPE_VEC3, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, true },
    2076. 

  2076. 	{ "textureProj", TYPE_IVEC4, { TYPE_ISAMPLER2D, TYPE_VEC4, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, true },
    2077. 

  2077. 	{ "textureProj", TYPE_UVEC4, { TYPE_USAMPLER2D, TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, true },
    2078. 

  2078. 	{ "textureProj", TYPE_UVEC4, { TYPE_USAMPLER2D, TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, true },
    2079. 

  2079. 	{ "textureProj", TYPE_UVEC4, { TYPE_USAMPLER2D, TYPE_VEC3, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, true },
    2080. 

  2080. 	{ "textureProj", TYPE_UVEC4, { TYPE_USAMPLER2D, TYPE_VEC4, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, true },
    2081. 

  2081. 	{ "textureProj", TYPE_VEC4, { TYPE_SAMPLER3D, TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, true },
    2082. 

  2082. 	{ "textureProj", TYPE_VEC4, { TYPE_SAMPLER3D, TYPE_VEC4, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, true },
    2083. 

  2083. 	{ "textureProj", TYPE_IVEC4, { TYPE_ISAMPLER3D, TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, true },
    2084. 

  2084. 	{ "textureProj", TYPE_IVEC4, { TYPE_ISAMPLER3D, TYPE_VEC4, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, true },
    2085. 

  2085. 	{ "textureProj", TYPE_UVEC4, { TYPE_USAMPLER3D, TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, true },
    2086. 

  2086. 	{ "textureProj", TYPE_UVEC4, { TYPE_USAMPLER3D, TYPE_VEC4, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, true },
    2087. 

  2087. 

  2088. 	{ "textureLod", TYPE_VEC4, { TYPE_SAMPLER2D, TYPE_VEC2, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
    2089. 

  2089. 	{ "textureLod", TYPE_IVEC4, { TYPE_ISAMPLER2D, TYPE_VEC2, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, true },
    2090. 

  2090. 	{ "textureLod", TYPE_UVEC4, { TYPE_USAMPLER2D, TYPE_VEC2, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, true },
    2091. 

  2091. 	{ "textureLod", TYPE_VEC4, { TYPE_SAMPLER2DARRAY, TYPE_VEC3, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
    2092. 

  2092. 	{ "textureLod", TYPE_IVEC4, { TYPE_ISAMPLER2DARRAY, TYPE_VEC3, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, true },
    2093. 

  2093. 	{ "textureLod", TYPE_UVEC4, { TYPE_USAMPLER2DARRAY, TYPE_VEC3, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, true },
    2094. 

  2094. 	{ "textureLod", TYPE_VEC4, { TYPE_SAMPLER3D, TYPE_VEC3, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
    2095. 

  2095. 	{ "textureLod", TYPE_IVEC4, { TYPE_ISAMPLER3D, TYPE_VEC3, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, true },
    2096. 

  2096. 	{ "textureLod", TYPE_UVEC4, { TYPE_USAMPLER3D, TYPE_VEC3, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, true },
    2097. 

  2097. 	{ "textureLod", TYPE_VEC4, { TYPE_SAMPLERCUBE, TYPE_VEC3, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
    2098. 

  2098. 	{ "textureLod", TYPE_VEC4, { TYPE_SAMPLERCUBEARRAY, TYPE_VEC4, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
    2099. 

  2099. 

  2100. 	{ "texelFetch", TYPE_VEC4, { TYPE_SAMPLER2D, TYPE_IVEC2, TYPE_INT, TYPE_VOID }, TAG_GLOBAL, true },
    2101. 

  2101. 	{ "texelFetch", TYPE_IVEC4, { TYPE_ISAMPLER2D, TYPE_IVEC2, TYPE_INT, TYPE_VOID }, TAG_GLOBAL, true },
    2102. 

  2102. 	{ "texelFetch", TYPE_UVEC4, { TYPE_USAMPLER2D, TYPE_IVEC2, TYPE_INT, TYPE_VOID }, TAG_GLOBAL, true },
    2103. 

  2103. 	{ "texelFetch", TYPE_VEC4, { TYPE_SAMPLER2DARRAY, TYPE_IVEC3, TYPE_INT, TYPE_VOID }, TAG_GLOBAL, true },
    2104. 

  2104. 	{ "texelFetch", TYPE_IVEC4, { TYPE_ISAMPLER2DARRAY, TYPE_IVEC3, TYPE_INT, TYPE_VOID }, TAG_GLOBAL, true },
    2105. 

  2105. 	{ "texelFetch", TYPE_UVEC4, { TYPE_USAMPLER2DARRAY, TYPE_IVEC3, TYPE_INT, TYPE_VOID }, TAG_GLOBAL, true },
    2106. 

  2106. 	{ "texelFetch", TYPE_VEC4, { TYPE_SAMPLER3D, TYPE_IVEC3, TYPE_INT, TYPE_VOID }, TAG_GLOBAL, true },
    2107. 

  2107. 	{ "texelFetch", TYPE_IVEC4, { TYPE_ISAMPLER3D, TYPE_IVEC3, TYPE_INT, TYPE_VOID }, TAG_GLOBAL, true },
    2108. 

  2108. 	{ "texelFetch", TYPE_UVEC4, { TYPE_USAMPLER3D, TYPE_IVEC3, TYPE_INT, TYPE_VOID }, TAG_GLOBAL, true },
    2109. 

  2109. 

  2110. 	{ "textureProjLod", TYPE_VEC4, { TYPE_SAMPLER2D, TYPE_VEC3, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, true },
    2111. 

  2111. 	{ "textureProjLod", TYPE_VEC4, { TYPE_SAMPLER2D, TYPE_VEC4, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, true },
    2112. 

  2112. 	{ "textureProjLod", TYPE_IVEC4, { TYPE_ISAMPLER2D, TYPE_VEC3, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, true },
    2113. 

  2113. 	{ "textureProjLod", TYPE_IVEC4, { TYPE_ISAMPLER2D, TYPE_VEC4, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, true },
    2114. 

  2114. 	{ "textureProjLod", TYPE_UVEC4, { TYPE_USAMPLER2D, TYPE_VEC3, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, true },
    2115. 

  2115. 	{ "textureProjLod", TYPE_UVEC4, { TYPE_USAMPLER2D, TYPE_VEC4, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, true },
    2116. 

  2116. 	{ "textureProjLod", TYPE_VEC4, { TYPE_SAMPLER3D, TYPE_VEC4, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, true },
    2117. 

  2117. 	{ "textureProjLod", TYPE_IVEC4, { TYPE_ISAMPLER3D, TYPE_VEC4, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, true },
    2118. 

  2118. 	{ "textureProjLod", TYPE_UVEC4, { TYPE_USAMPLER3D, TYPE_VEC4, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, true },
    2119. 

  2119. 

  2120. 	{ "textureGrad", TYPE_VEC4, { TYPE_SAMPLER2D, TYPE_VEC2, TYPE_VEC2, TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, true },
    2121. 

  2121. 	{ "textureGrad", TYPE_IVEC4, { TYPE_ISAMPLER2D, TYPE_VEC2, TYPE_VEC2, TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, true },
    2122. 

  2122. 	{ "textureGrad", TYPE_UVEC4, { TYPE_USAMPLER2D, TYPE_VEC2, TYPE_VEC2, TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, true },
    2123. 

  2123. 	{ "textureGrad", TYPE_VEC4, { TYPE_SAMPLER2DARRAY, TYPE_VEC3, TYPE_VEC2, TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, true },
    2124. 

  2124. 	{ "textureGrad", TYPE_IVEC4, { TYPE_ISAMPLER2DARRAY, TYPE_VEC3, TYPE_VEC2, TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, true },
    2125. 

  2125. 	{ "textureGrad", TYPE_UVEC4, { TYPE_USAMPLER2DARRAY, TYPE_VEC3, TYPE_VEC2, TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, true },
    2126. 

  2126. 	{ "textureGrad", TYPE_VEC4, { TYPE_SAMPLER3D, TYPE_VEC3, TYPE_VEC3, TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, true },
    2127. 

  2127. 	{ "textureGrad", TYPE_IVEC4, { TYPE_ISAMPLER3D, TYPE_VEC3, TYPE_VEC3, TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, true },
    2128. 

  2128. 	{ "textureGrad", TYPE_UVEC4, { TYPE_USAMPLER3D, TYPE_VEC3, TYPE_VEC3, TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, true },
    2129. 

  2129. 	{ "textureGrad", TYPE_VEC4, { TYPE_SAMPLERCUBE, TYPE_VEC3, TYPE_VEC3, TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, true },
    2130. 

  2130. 	{ "textureGrad", TYPE_VEC4, { TYPE_SAMPLERCUBEARRAY, TYPE_VEC4, TYPE_VEC3, TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, true },
    2131. 

  2131. 

  2132. 	{ "dFdx", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, true },
    2133. 

  2133. 	{ "dFdx", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, true },
    2134. 

  2134. 	{ "dFdx", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, true },
    2135. 

  2135. 	{ "dFdx", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, true },
    2136. 

  2136. 

  2137. 	{ "dFdy", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, true },
    2138. 

  2138. 	{ "dFdy", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, true },
    2139. 

  2139. 	{ "dFdy", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, true },
    2140. 

  2140. 	{ "dFdy", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, true },
    2141. 

  2141. 

  2142. 	{ "fwidth", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, true },
    2143. 

  2143. 	{ "fwidth", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, true },
    2144. 

  2144. 	{ "fwidth", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, true },
    2145. 

  2145. 	{ "fwidth", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, true },
    2146. 

  2146. 

  2147. 	//sub-functions
    2148. 

  2148. 

  2149. 	//array
    2150. 

  2150. 	{ "length", TYPE_INT, { TYPE_VOID }, TAG_ARRAY, true },
    2151. 

  2151. 

  2152. 	// modern functions
    2153. 

  2153. 

  2154. 	{ "fma", TYPE_FLOAT, { TYPE_FLOAT, TYPE_FLOAT, TYPE_FLOAT, TYPE_VOID }, TAG_GLOBAL, false },
    2155. 

  2155. 	{ "fma", TYPE_VEC2, { TYPE_VEC2, TYPE_VEC2, TYPE_VEC2, TYPE_VOID }, TAG_GLOBAL, false },
    2156. 

  2156. 	{ "fma", TYPE_VEC3, { TYPE_VEC3, TYPE_VEC3, TYPE_VEC3, TYPE_VOID }, TAG_GLOBAL, false },
    2157. 

  2157. 	{ "fma", TYPE_VEC4, { TYPE_VEC4, TYPE_VEC4, TYPE_VEC4, TYPE_VOID }, TAG_GLOBAL, false },
    2158. 

  2158. 

  2159. 	{ nullptr, TYPE_VOID, { TYPE_VOID }, TAG_GLOBAL, false }
    2160. 

  2160. 

  2161. };
    2162. 

  2162. 

  2163. const ShaderLanguage::BuiltinFuncOutArgs ShaderLanguage::builtin_func_out_args[] = {
    2164. 

  2164. 	//constructors
    2165. 

  2165. 	{ "modf", 1 },
    2166. 

  2166. 	{ nullptr, 0 }
    2167. 

  2167. };
    2168. 

  2168. 

  2169. bool ShaderLanguage::_validate_function_call(BlockNode *p_block, const FunctionInfo &p_function_info, OperatorNode *p_func, DataType *r_ret_type, StringName *r_ret_type_str) {
    2170. 

  2170. 	ERR_FAIL_COND_V(p_func->op != OP_CALL && p_func->op != OP_CONSTRUCT, false);
    2171. 

  2171. 

  2172. 	Vector<DataType> args;
    2173. 

  2173. 	Vector<StringName> args2;
    2174. 

  2174. 

  2175. 	ERR_FAIL_COND_V(p_func->arguments[0]->type != Node::TYPE_VARIABLE, false);
    2176. 

  2176. 

  2177. 	StringName name = static_cast<VariableNode *>(p_func->arguments[0])->name.operator String();
    2178. 

  2178. 

  2179. 	for (int i = 1; i < p_func->arguments.size(); i++) {
    2180. 

  2180. 		args.push_back(p_func->arguments[i]->get_datatype());
    2181. 

  2181. 		args2.push_back(p_func->arguments[i]->get_datatype_name());
    2182. 

  2182. 	}
    2183. 

  2183. 

  2184. 	int argcount = args.size();
    2185. 

  2185. 

  2186. 	if (p_function_info.stage_functions.has(name)) {
    2187. 

  2187. 		//stage based function
    2188. 

  2188. 		const StageFunctionInfo &sf = p_function_info.stage_functions[name];
    2189. 

  2189. 		if (argcount != sf.arguments.size()) {
    2190. 

  2190. 			_set_error(vformat("Invalid number of arguments when calling stage function '%s', which expects %d arguments.", String(name), sf.arguments.size()));
    2191. 

  2191. 			return false;
    2192. 

  2192. 		}
    2193. 

  2193. 		//validate arguments
    2194. 

  2194. 		for (int i = 0; i < argcount; i++) {
    2195. 

  2195. 			if (args[i] != sf.arguments[i].type) {
    2196. 

  2196. 				_set_error(vformat("Invalid argument type when calling stage function '%s', type expected is '%s'.", String(name), String(get_datatype_name(sf.arguments[i].type))));
    2197. 

  2197. 				return false;
    2198. 

  2198. 			}
    2199. 

  2199. 		}
    2200. 

  2200. 

  2201. 		if (r_ret_type) {
    2202. 

  2202. 			*r_ret_type = sf.return_type;
    2203. 

  2203. 		}
    2204. 

  2204. 		if (r_ret_type_str) {
    2205. 

  2205. 			*r_ret_type_str = "";
    2206. 

  2206. 		}
    2207. 

  2207. 		return true;
    2208. 

  2208. 	}
    2209. 

  2209. 

  2210. 	bool failed_builtin = false;
    2211. 

  2211. 	bool unsupported_builtin = false;
    2212. 

  2212. 	int builtin_idx = 0;
    2213. 

  2213. 

  2214. 	if (argcount <= 4) {
    2215. 

  2215. 		// test builtins
    2216. 

  2216. 		int idx = 0;
    2217. 

  2217. 

  2218. 		while (builtin_func_defs[idx].name) {
    2219. 

  2219. 			if (completion_class != builtin_func_defs[idx].tag) {
    2220. 

  2220. 				idx++;
    2221. 

  2221. 				continue;
    2222. 

  2222. 			}
    2223. 

  2223. 

  2224. 			if (name == builtin_func_defs[idx].name) {
    2225. 

  2225. 				failed_builtin = true;
    2226. 

  2226. 				bool fail = false;
    2227. 

  2227. 				for (int i = 0; i < argcount; i++) {
    2228. 

  2228. 					if (get_scalar_type(args[i]) == args[i] && p_func->arguments[i + 1]->type == Node::TYPE_CONSTANT && convert_constant(static_cast<ConstantNode *>(p_func->arguments[i + 1]), builtin_func_defs[idx].args[i])) {
    2229. 

  2229. 						//all good, but needs implicit conversion later
    2230. 

  2230. 					} else if (args[i] != builtin_func_defs[idx].args[i]) {
    2231. 

  2231. 						fail = true;
    2232. 

  2232. 						break;
    2233. 

  2233. 					}
    2234. 

  2234. 				}
    2235. 

  2235. 

  2236. 				if (!fail) {
    2237. 

  2237. 					if (RenderingServer::get_singleton()->is_low_end()) {
    2238. 

  2238. 						if (builtin_func_defs[idx].high_end) {
    2239. 

  2239. 							fail = true;
    2240. 

  2240. 							unsupported_builtin = true;
    2241. 

  2241. 							builtin_idx = idx;
    2242. 

  2242. 						}
    2243. 

  2243. 					}
    2244. 

  2244. 				}
    2245. 

  2245. 

  2246. 				if (!fail && argcount < 4 && builtin_func_defs[idx].args[argcount] != TYPE_VOID) {
    2247. 

  2247. 					fail = true; //make sure the number of arguments matches
    2248. 

  2248. 				}
    2249. 

  2249. 

  2250. 				if (!fail) {
    2251. 

  2251. 					//make sure its not an out argument used in the wrong way
    2252. 

  2252. 					int outarg_idx = 0;
    2253. 

  2253. 					while (builtin_func_out_args[outarg_idx].name) {
    2254. 

  2254. 						if (String(name) == builtin_func_out_args[outarg_idx].name) {
    2255. 

  2255. 							int arg_idx = builtin_func_out_args[outarg_idx].argument;
    2256. 

  2256. 

  2257. 							if (arg_idx < argcount) {
    2258. 

  2258. 								if (p_func->arguments[arg_idx + 1]->type != Node::TYPE_VARIABLE && p_func->arguments[arg_idx + 1]->type != Node::TYPE_MEMBER && p_func->arguments[arg_idx + 1]->type != Node::TYPE_ARRAY) {
    2259. 

  2259. 									_set_error("Argument " + itos(arg_idx + 1) + " of function '" + String(name) + "' is not a variable, array or member.");
    2260. 

  2260. 									return false;
    2261. 

  2261. 								}
    2262. 

  2262. 

  2263. 								if (p_func->arguments[arg_idx + 1]->type == Node::TYPE_ARRAY) {
    2264. 

  2264. 									ArrayNode *mn = static_cast<ArrayNode *>(p_func->arguments[arg_idx + 1]);
    2265. 

  2265. 									if (mn->is_const) {
    2266. 

  2266. 										fail = true;
    2267. 

  2267. 									}
    2268. 

  2268. 								} else if (p_func->arguments[arg_idx + 1]->type == Node::TYPE_MEMBER) {
    2269. 

  2269. 									MemberNode *mn = static_cast<MemberNode *>(p_func->arguments[arg_idx + 1]);
    2270. 

  2270. 									if (mn->basetype_const) {
    2271. 

  2271. 										fail = true;
    2272. 

  2272. 									}
    2273. 

  2273. 								} else { // TYPE_VARIABLE
    2274. 

  2274. 									VariableNode *vn = static_cast<VariableNode *>(p_func->arguments[arg_idx + 1]);
    2275. 

  2275. 									if (vn->is_const) {
    2276. 

  2276. 										fail = true;
    2277. 

  2277. 									} else {
    2278. 

  2278. 										StringName varname = vn->name;
    2279. 

  2279. 										if (shader->uniforms.has(varname)) {
    2280. 

  2280. 											fail = true;
    2281. 

  2281. 										} else {
    2282. 

  2282. 											if (p_function_info.built_ins.has(varname)) {
    2283. 

  2283. 												BuiltInInfo info = p_function_info.built_ins[varname];
    2284. 

  2284. 												if (info.constant) {
    2285. 

  2285. 													fail = true;
    2286. 

  2286. 												}
    2287. 

  2287. 											}
    2288. 

  2288. 										}
    2289. 

  2289. 									}
    2290. 

  2290. 								}
    2291. 

  2291. 								if (fail) {
    2292. 

  2292. 									_set_error(vformat("Constant value cannot be passed for '%s' parameter!", "out"));
    2293. 

  2293. 									return false;
    2294. 

  2294. 								}
    2295. 

  2295. 

  2296. 								StringName var_name;
    2297. 

  2297. 								if (p_func->arguments[arg_idx + 1]->type == Node::TYPE_ARRAY) {
    2298. 

  2298. 									var_name = static_cast<const ArrayNode *>(p_func->arguments[arg_idx + 1])->name;
    2299. 

  2299. 								} else if (p_func->arguments[arg_idx + 1]->type == Node::TYPE_MEMBER) {
    2300. 

  2300. 									Node *n = static_cast<const MemberNode *>(p_func->arguments[arg_idx + 1])->owner;
    2301. 

  2301. 									while (n->type == Node::TYPE_MEMBER) {
    2302. 

  2302. 										n = static_cast<const MemberNode *>(n)->owner;
    2303. 

  2303. 									}
    2304. 

  2304. 									if (n->type != Node::TYPE_VARIABLE && n->type != Node::TYPE_ARRAY) {
    2305. 

  2305. 										_set_error("Argument " + itos(arg_idx + 1) + " of function '" + String(name) + "' is not a variable, array or member.");
    2306. 

  2306. 										return false;
    2307. 

  2307. 									}
    2308. 

  2308. 									if (n->type == Node::TYPE_VARIABLE) {
    2309. 

  2309. 										var_name = static_cast<const VariableNode *>(n)->name;
    2310. 

  2310. 									} else { // TYPE_ARRAY
    2311. 

  2311. 										var_name = static_cast<const ArrayNode *>(n)->name;
    2312. 

  2312. 									}
    2313. 

  2313. 								} else { // TYPE_VARIABLE
    2314. 

  2314. 									var_name = static_cast<const VariableNode *>(p_func->arguments[arg_idx + 1])->name;
    2315. 

  2315. 								}
    2316. 

  2316. 								const BlockNode *b = p_block;
    2317. 

  2317. 								bool valid = false;
    2318. 

  2318. 								while (b) {
    2319. 

  2319. 									if (b->variables.has(var_name) || p_function_info.built_ins.has(var_name)) {
    2320. 

  2320. 										valid = true;
    2321. 

  2321. 										break;
    2322. 

  2322. 									}
    2323. 

  2323. 									if (b->parent_function) {
    2324. 

  2324. 										for (int i = 0; i < b->parent_function->arguments.size(); i++) {
    2325. 

  2325. 											if (b->parent_function->arguments[i].name == var_name) {
    2326. 

  2326. 												valid = true;
    2327. 

  2327. 												break;
    2328. 

  2328. 											}
    2329. 

  2329. 										}
    2330. 

  2330. 									}
    2331. 

  2331. 									b = b->parent_block;
    2332. 

  2332. 								}
    2333. 

  2333. 

  2334. 								if (!valid) {
    2335. 

  2335. 									_set_error("Argument " + itos(arg_idx + 1) + " of function '" + String(name) + "' can only take a local variable, array or member.");
    2336. 

  2336. 									return false;
    2337. 

  2337. 								}
    2338. 

  2338. 							}
    2339. 

  2339. 						}
    2340. 

  2340. 

  2341. 						outarg_idx++;
    2342. 

  2342. 					}
    2343. 

  2343. 					//implicitly convert values if possible
    2344. 

  2344. 					for (int i = 0; i < argcount; i++) {
    2345. 

  2345. 						if (get_scalar_type(args[i]) != args[i] || args[i] == builtin_func_defs[idx].args[i] || p_func->arguments[i + 1]->type != Node::TYPE_CONSTANT) {
    2346. 

  2346. 							//can't do implicit conversion here
    2347. 

  2347. 							continue;
    2348. 

  2348. 						}
    2349. 

  2349. 

  2350. 						//this is an implicit conversion
    2351. 

  2351. 						ConstantNode *constant = static_cast<ConstantNode *>(p_func->arguments[i + 1]);
    2352. 

  2352. 						ConstantNode *conversion = alloc_node<ConstantNode>();
    2353. 

  2353. 

  2354. 						conversion->datatype = builtin_func_defs[idx].args[i];
    2355. 

  2355. 						conversion->values.resize(1);
    2356. 

  2356. 

  2357. 						convert_constant(constant, builtin_func_defs[idx].args[i], conversion->values.ptrw());
    2358. 

  2358. 						p_func->arguments.write[i + 1] = conversion;
    2359. 

  2359. 					}
    2360. 

  2360. 

  2361. 					if (r_ret_type) {
    2362. 

  2362. 						*r_ret_type = builtin_func_defs[idx].rettype;
    2363. 

  2363. 					}
    2364. 

  2364. 

  2365. 					return true;
    2366. 

  2366. 				}
    2367. 

  2367. 			}
    2368. 

  2368. 

  2369. 			idx++;
    2370. 

  2370. 		}
    2371. 

  2371. 	}
    2372. 

  2372. 

  2373. 	if (unsupported_builtin) {
    2374. 

  2374. 		String arglist = "";
    2375. 

  2375. 		for (int i = 0; i < argcount; i++) {
    2376. 

  2376. 			if (i > 0) {
    2377. 

  2377. 				arglist += ", ";
    2378. 

  2378. 			}
    2379. 

  2379. 			arglist += get_datatype_name(builtin_func_defs[builtin_idx].args[i]);
    2380. 

  2380. 		}
    2381. 

  2381. 

  2382. 		String err = "Built-in function \"" + String(name) + "(" + arglist + ")\" is supported only on high-end platform!";
    2383. 

  2383. 		_set_error(err);
    2384. 

  2384. 		return false;
    2385. 

  2385. 	}
    2386. 

  2386. 

  2387. 	if (failed_builtin) {
    2388. 

  2388. 		String err = "Invalid arguments for built-in function: " + String(name) + "(";
    2389. 

  2389. 		for (int i = 0; i < argcount; i++) {
    2390. 

  2390. 			if (i > 0) {
    2391. 

  2391. 				err += ",";
    2392. 

  2392. 			}
    2393. 

  2393. 

  2394. 			String arg_name;
    2395. 

  2395. 			if (args[i] == TYPE_STRUCT) {
    2396. 

  2396. 				arg_name = args2[i];
    2397. 

  2397. 			} else {
    2398. 

  2398. 				arg_name = get_datatype_name(args[i]);
    2399. 

  2399. 			}
    2400. 

  2400. 			err += arg_name;
    2401. 

  2401. 		}
    2402. 

  2402. 		err += ")";
    2403. 

  2403. 		_set_error(err);
    2404. 

  2404. 		return false;
    2405. 

  2405. 	}
    2406. 

  2406. 

  2407. 	// try existing functions..
    2408. 

  2408. 

  2409. 	StringName exclude_function;
    2410. 

  2410. 	BlockNode *block = p_block;
    2411. 

  2411. 

  2412. 	while (block) {
    2413. 

  2413. 		if (block->parent_function) {
    2414. 

  2414. 			exclude_function = block->parent_function->name;
    2415. 

  2415. 		}
    2416. 

  2416. 		block = block->parent_block;
    2417. 

  2417. 	}
    2418. 

  2418. 

  2419. 	if (name == exclude_function) {
    2420. 

  2420. 		_set_error("Recursion is not allowed");
    2421. 

  2421. 		return false;
    2422. 

  2422. 	}
    2423. 

  2423. 

  2424. 	int last_arg_count = 0;
    2425. 

  2425. 	String arg_list = "";
    2426. 

  2426. 

  2427. 	for (int i = 0; i < shader->functions.size(); i++) {
    2428. 

  2428. 		if (name != shader->functions[i].name) {
    2429. 

  2429. 			continue;
    2430. 

  2430. 		}
    2431. 

  2431. 

  2432. 		if (!shader->functions[i].callable) {
    2433. 

  2433. 			_set_error("Function '" + String(name) + " can't be called from source code.");
    2434. 

  2434. 			return false;
    2435. 

  2435. 		}
    2436. 

  2436. 

  2437. 		FunctionNode *pfunc = shader->functions[i].function;
    2438. 

  2438. 		if (arg_list == "") {
    2439. 

  2439. 			for (int j = 0; j < pfunc->arguments.size(); j++) {
    2440. 

  2440. 				if (j > 0) {
    2441. 

  2441. 					arg_list += ", ";
    2442. 

  2442. 				}
    2443. 

  2443. 				String func_arg_name;
    2444. 

  2444. 				if (pfunc->arguments[j].type == TYPE_STRUCT) {
    2445. 

  2445. 					func_arg_name = pfunc->arguments[j].type_str;
    2446. 

  2446. 				} else {
    2447. 

  2447. 					func_arg_name = get_datatype_name(pfunc->arguments[j].type);
    2448. 

  2448. 				}
    2449. 

  2449. 				arg_list += func_arg_name;
    2450. 

  2450. 			}
    2451. 

  2451. 		}
    2452. 

  2452. 

  2453. 		if (pfunc->arguments.size() != args.size()) {
    2454. 

  2454. 			last_arg_count = pfunc->arguments.size();
    2455. 

  2455. 			continue;
    2456. 

  2456. 		}
    2457. 

  2457. 

  2458. 		bool fail = false;
    2459. 

  2459. 

  2460. 		for (int j = 0; j < args.size(); j++) {
    2461. 

  2461. 			if (get_scalar_type(args[j]) == args[j] && p_func->arguments[j + 1]->type == Node::TYPE_CONSTANT && convert_constant(static_cast<ConstantNode *>(p_func->arguments[j + 1]), pfunc->arguments[j].type)) {
    2462. 

  2462. 				//all good, but it needs implicit conversion later
    2463. 

  2463. 			} else if (args[j] != pfunc->arguments[j].type || (args[j] == TYPE_STRUCT && args2[j] != pfunc->arguments[j].type_str)) {
    2464. 

  2464. 				String func_arg_name;
    2465. 

  2465. 				if (pfunc->arguments[j].type == TYPE_STRUCT) {
    2466. 

  2466. 					func_arg_name = pfunc->arguments[j].type_str;
    2467. 

  2467. 				} else {
    2468. 

  2468. 					func_arg_name = get_datatype_name(pfunc->arguments[j].type);
    2469. 

  2469. 				}
    2470. 

  2470. 				String arg_name;
    2471. 

  2471. 				if (args[j] == TYPE_STRUCT) {
    2472. 

  2472. 					arg_name = args2[j];
    2473. 

  2473. 				} else {
    2474. 

  2474. 					arg_name = get_datatype_name(args[j]);
    2475. 

  2475. 				}
    2476. 

  2476. 				_set_error(vformat("Invalid argument for \"%s(%s)\" function: argument %s should be %s but is %s.", String(name), arg_list, j + 1, func_arg_name, arg_name));
    2477. 

  2477. 				fail = true;
    2478. 

  2478. 				break;
    2479. 

  2479. 			}
    2480. 

  2480. 		}
    2481. 

  2481. 

  2482. 		if (!fail) {
    2483. 

  2483. 			//implicitly convert values if possible
    2484. 

  2484. 			for (int k = 0; k < args.size(); k++) {
    2485. 

  2485. 				if (get_scalar_type(args[k]) != args[k] || args[k] == pfunc->arguments[k].type || p_func->arguments[k + 1]->type != Node::TYPE_CONSTANT) {
    2486. 

  2486. 					//can't do implicit conversion here
    2487. 

  2487. 					continue;
    2488. 

  2488. 				}
    2489. 

  2489. 

  2490. 				//this is an implicit conversion
    2491. 

  2491. 				ConstantNode *constant = static_cast<ConstantNode *>(p_func->arguments[k + 1]);
    2492. 

  2492. 				ConstantNode *conversion = alloc_node<ConstantNode>();
    2493. 

  2493. 

  2494. 				conversion->datatype = pfunc->arguments[k].type;
    2495. 

  2495. 				conversion->values.resize(1);
    2496. 

  2496. 

  2497. 				convert_constant(constant, pfunc->arguments[k].type, conversion->values.ptrw());
    2498. 

  2498. 				p_func->arguments.write[k + 1] = conversion;
    2499. 

  2499. 			}
    2500. 

  2500. 

  2501. 			if (r_ret_type) {
    2502. 

  2502. 				*r_ret_type = pfunc->return_type;
    2503. 

  2503. 				if (pfunc->return_type == TYPE_STRUCT) {
    2504. 

  2504. 					*r_ret_type_str = pfunc->return_struct_name;
    2505. 

  2505. 				}
    2506. 

  2506. 			}
    2507. 

  2507. 

  2508. 			return true;
    2509. 

  2509. 		}
    2510. 

  2510. 	}
    2511. 

  2511. 

  2512. 	if (last_arg_count > args.size()) {
    2513. 

  2513. 		_set_error(vformat("Too few arguments for \"%s(%s)\" call. Expected at least %s but received %s.", String(name), arg_list, last_arg_count, args.size()));
    2514. 

  2514. 	} else if (last_arg_count < args.size()) {
    2515. 

  2515. 		_set_error(vformat("Too many arguments for \"%s(%s)\" call. Expected at most %s but received %s.", String(name), arg_list, last_arg_count, args.size()));
    2516. 

  2516. 	}
    2517. 

  2517. 

  2518. 	return false;
    2519. 

  2519. }
    2520. 

  2520. 

  2521. bool ShaderLanguage::_compare_datatypes_in_nodes(Node *a, Node *b) const {
    2522. 

  2522. 	if (a->get_datatype() != b->get_datatype()) {
    2523. 

  2523. 		return false;
    2524. 

  2524. 	}
    2525. 

  2525. 	if (a->get_datatype() == TYPE_STRUCT || b->get_datatype() == TYPE_STRUCT) {
    2526. 

  2526. 		if (a->get_datatype_name() != b->get_datatype_name()) {
    2527. 

  2527. 			return false;
    2528. 

  2528. 		}
    2529. 

  2529. 	}
    2530. 

  2530. 	return true;
    2531. 

  2531. }
    2532. 

  2532. 

  2533. bool ShaderLanguage::_parse_function_arguments(BlockNode *p_block, const FunctionInfo &p_function_info, OperatorNode *p_func, int *r_complete_arg) {
    2534. 

  2534. 	TkPos pos = _get_tkpos();
    2535. 

  2535. 	Token tk = _get_token();
    2536. 

  2536. 

  2537. 	if (tk.type == TK_PARENTHESIS_CLOSE) {
    2538. 

  2538. 		return true;
    2539. 

  2539. 	}
    2540. 

  2540. 

  2541. 	_set_tkpos(pos);
    2542. 

  2542. 

  2543. 	while (true) {
    2544. 

  2544. 		if (r_complete_arg) {
    2545. 

  2545. 			pos = _get_tkpos();
    2546. 

  2546. 			tk = _get_token();
    2547. 

  2547. 

  2548. 			if (tk.type == TK_CURSOR) {
    2549. 

  2549. 				*r_complete_arg = p_func->arguments.size() - 1;
    2550. 

  2550. 			} else {
    2551. 

  2551. 				_set_tkpos(pos);
    2552. 

  2552. 			}
    2553. 

  2553. 		}
    2554. 

  2554. 

  2555. 		Node *arg = _parse_and_reduce_expression(p_block, p_function_info);
    2556. 

  2556. 

  2557. 		if (!arg) {
    2558. 

  2558. 			return false;
    2559. 

  2559. 		}
    2560. 

  2560. 

  2561. 		p_func->arguments.push_back(arg);
    2562. 

  2562. 

  2563. 		tk = _get_token();
    2564. 

  2564. 

  2565. 		if (tk.type == TK_PARENTHESIS_CLOSE) {
    2566. 

  2566. 			return true;
    2567. 

  2567. 		} else if (tk.type != TK_COMMA) {
    2568. 

  2568. 			// something is broken
    2569. 

  2569. 			_set_error("Expected ',' or ')' after argument");
    2570. 

  2570. 			return false;
    2571. 

  2571. 		}
    2572. 

  2572. 	}
    2573. 

  2573. 

  2574. 	return true;
    2575. 

  2575. }
    2576. 

  2576. 

  2577. bool ShaderLanguage::is_token_operator(TokenType p_type) {
    2578. 

  2578. 	return (p_type == TK_OP_EQUAL ||
    2579. 

  2579. 			p_type == TK_OP_NOT_EQUAL ||
    2580. 

  2580. 			p_type == TK_OP_LESS ||
    2581. 

  2581. 			p_type == TK_OP_LESS_EQUAL ||
    2582. 

  2582. 			p_type == TK_OP_GREATER ||
    2583. 

  2583. 			p_type == TK_OP_GREATER_EQUAL ||
    2584. 

  2584. 			p_type == TK_OP_AND ||
    2585. 

  2585. 			p_type == TK_OP_OR ||
    2586. 

  2586. 			p_type == TK_OP_NOT ||
    2587. 

  2587. 			p_type == TK_OP_ADD ||
    2588. 

  2588. 			p_type == TK_OP_SUB ||
    2589. 

  2589. 			p_type == TK_OP_MUL ||
    2590. 

  2590. 			p_type == TK_OP_DIV ||
    2591. 

  2591. 			p_type == TK_OP_MOD ||
    2592. 

  2592. 			p_type == TK_OP_SHIFT_LEFT ||
    2593. 

  2593. 			p_type == TK_OP_SHIFT_RIGHT ||
    2594. 

  2594. 			p_type == TK_OP_ASSIGN ||
    2595. 

  2595. 			p_type == TK_OP_ASSIGN_ADD ||
    2596. 

  2596. 			p_type == TK_OP_ASSIGN_SUB ||
    2597. 

  2597. 			p_type == TK_OP_ASSIGN_MUL ||
    2598. 

  2598. 			p_type == TK_OP_ASSIGN_DIV ||
    2599. 

  2599. 			p_type == TK_OP_ASSIGN_MOD ||
    2600. 

  2600. 			p_type == TK_OP_ASSIGN_SHIFT_LEFT ||
    2601. 

  2601. 			p_type == TK_OP_ASSIGN_SHIFT_RIGHT ||
    2602. 

  2602. 			p_type == TK_OP_ASSIGN_BIT_AND ||
    2603. 

  2603. 			p_type == TK_OP_ASSIGN_BIT_OR ||
    2604. 

  2604. 			p_type == TK_OP_ASSIGN_BIT_XOR ||
    2605. 

  2605. 			p_type == TK_OP_BIT_AND ||
    2606. 

  2606. 			p_type == TK_OP_BIT_OR ||
    2607. 

  2607. 			p_type == TK_OP_BIT_XOR ||
    2608. 

  2608. 			p_type == TK_OP_BIT_INVERT ||
    2609. 

  2609. 			p_type == TK_OP_INCREMENT ||
    2610. 

  2610. 			p_type == TK_OP_DECREMENT ||
    2611. 

  2611. 			p_type == TK_QUESTION ||
    2612. 

  2612. 			p_type == TK_COLON);
    2613. 

  2613. }
    2614. 

  2614. 

  2615. bool ShaderLanguage::convert_constant(ConstantNode *p_constant, DataType p_to_type, ConstantNode::Value *p_value) {
    2616. 

  2616. 	if (p_constant->datatype == p_to_type) {
    2617. 

  2617. 		if (p_value) {
    2618. 

  2618. 			for (int i = 0; i < p_constant->values.size(); i++) {
    2619. 

  2619. 				p_value[i] = p_constant->values[i];
    2620. 

  2620. 			}
    2621. 

  2621. 		}
    2622. 

  2622. 		return true;
    2623. 

  2623. 	} else if (p_constant->datatype == TYPE_INT && p_to_type == TYPE_FLOAT) {
    2624. 

  2624. 		if (p_value) {
    2625. 

  2625. 			p_value->real = p_constant->values[0].sint;
    2626. 

  2626. 		}
    2627. 

  2627. 		return true;
    2628. 

  2628. 	} else if (p_constant->datatype == TYPE_UINT && p_to_type == TYPE_FLOAT) {
    2629. 

  2629. 		if (p_value) {
    2630. 

  2630. 			p_value->real = p_constant->values[0].uint;
    2631. 

  2631. 		}
    2632. 

  2632. 		return true;
    2633. 

  2633. 	} else if (p_constant->datatype == TYPE_INT && p_to_type == TYPE_UINT) {
    2634. 

  2634. 		if (p_constant->values[0].sint < 0) {
    2635. 

  2635. 			return false;
    2636. 

  2636. 		}
    2637. 

  2637. 		if (p_value) {
    2638. 

  2638. 			p_value->uint = p_constant->values[0].sint;
    2639. 

  2639. 		}
    2640. 

  2640. 		return true;
    2641. 

  2641. 	} else if (p_constant->datatype == TYPE_UINT && p_to_type == TYPE_INT) {
    2642. 

  2642. 		if (p_constant->values[0].uint > 0x7FFFFFFF) {
    2643. 

  2643. 			return false;
    2644. 

  2644. 		}
    2645. 

  2645. 		if (p_value) {
    2646. 

  2646. 			p_value->sint = p_constant->values[0].uint;
    2647. 

  2647. 		}
    2648. 

  2648. 		return true;
    2649. 

  2649. 	} else {
    2650. 

  2650. 		return false;
    2651. 

  2651. 	}
    2652. 

  2652. }
    2653. 

  2653. 

  2654. bool ShaderLanguage::is_scalar_type(DataType p_type) {
    2655. 

  2655. 	return p_type == TYPE_BOOL || p_type == TYPE_INT || p_type == TYPE_UINT || p_type == TYPE_FLOAT;
    2656. 

  2656. }
    2657. 

  2657. 

  2658. bool ShaderLanguage::is_sampler_type(DataType p_type) {
    2659. 

  2659. 	return p_type == TYPE_SAMPLER2D ||
    2660. 

  2660. 		   p_type == TYPE_ISAMPLER2D ||
    2661. 

  2661. 		   p_type == TYPE_USAMPLER2D ||
    2662. 

  2662. 		   p_type == TYPE_SAMPLER2DARRAY ||
    2663. 

  2663. 		   p_type == TYPE_ISAMPLER2DARRAY ||
    2664. 

  2664. 		   p_type == TYPE_USAMPLER2DARRAY ||
    2665. 

  2665. 		   p_type == TYPE_SAMPLER3D ||
    2666. 

  2666. 		   p_type == TYPE_ISAMPLER3D ||
    2667. 

  2667. 		   p_type == TYPE_USAMPLER3D ||
    2668. 

  2668. 		   p_type == TYPE_SAMPLERCUBE ||
    2669. 

  2669. 		   p_type == TYPE_SAMPLERCUBEARRAY;
    2670. 

  2670. }
    2671. 

  2671. 

  2672. Variant ShaderLanguage::constant_value_to_variant(const Vector<ShaderLanguage::ConstantNode::Value> &p_value, DataType p_type, ShaderLanguage::ShaderNode::Uniform::Hint p_hint) {
    2673. 

  2673. 	if (p_value.size() > 0) {
    2674. 

  2674. 		Variant value;
    2675. 

  2675. 		switch (p_type) {
    2676. 

  2676. 			case ShaderLanguage::TYPE_BOOL:
    2677. 

  2677. 				value = Variant(p_value[0].boolean);
    2678. 

  2678. 				break;
    2679. 

  2679. 			case ShaderLanguage::TYPE_BVEC2:
    2680. 

  2680. 			case ShaderLanguage::TYPE_BVEC3:
    2681. 

  2681. 			case ShaderLanguage::TYPE_BVEC4:
    2682. 

  2682. 			case ShaderLanguage::TYPE_INT:
    2683. 

  2683. 				value = Variant(p_value[0].sint);
    2684. 

  2684. 				break;
    2685. 

  2685. 			case ShaderLanguage::TYPE_IVEC2:
    2686. 

  2686. 				value = Variant(Vector2(p_value[0].sint, p_value[1].sint));
    2687. 

  2687. 				break;
    2688. 

  2688. 			case ShaderLanguage::TYPE_IVEC3:
    2689. 

  2689. 				value = Variant(Vector3(p_value[0].sint, p_value[1].sint, p_value[2].sint));
    2690. 

  2690. 				break;
    2691. 

  2691. 			case ShaderLanguage::TYPE_IVEC4:
    2692. 

  2692. 				value = Variant(Plane(p_value[0].sint, p_value[1].sint, p_value[2].sint, p_value[3].sint));
    2693. 

  2693. 				break;
    2694. 

  2694. 			case ShaderLanguage::TYPE_UINT:
    2695. 

  2695. 				value = Variant(p_value[0].uint);
    2696. 

  2696. 				break;
    2697. 

  2697. 			case ShaderLanguage::TYPE_UVEC2:
    2698. 

  2698. 				value = Variant(Vector2(p_value[0].uint, p_value[1].uint));
    2699. 

  2699. 				break;
    2700. 

  2700. 			case ShaderLanguage::TYPE_UVEC3:
    2701. 

  2701. 				value = Variant(Vector3(p_value[0].uint, p_value[1].uint, p_value[2].uint));
    2702. 

  2702. 				break;
    2703. 

  2703. 			case ShaderLanguage::TYPE_UVEC4:
    2704. 

  2704. 				value = Variant(Plane(p_value[0].uint, p_value[1].uint, p_value[2].uint, p_value[3].uint));
    2705. 

  2705. 				break;
    2706. 

  2706. 			case ShaderLanguage::TYPE_FLOAT:
    2707. 

  2707. 				value = Variant(p_value[0].real);
    2708. 

  2708. 				break;
    2709. 

  2709. 			case ShaderLanguage::TYPE_VEC2:
    2710. 

  2710. 				value = Variant(Vector2(p_value[0].real, p_value[1].real));
    2711. 

  2711. 				break;
    2712. 

  2712. 			case ShaderLanguage::TYPE_VEC3:
    2713. 

  2713. 				value = Variant(Vector3(p_value[0].real, p_value[1].real, p_value[2].real));
    2714. 

  2714. 				break;
    2715. 

  2715. 			case ShaderLanguage::TYPE_VEC4:
    2716. 

  2716. 				if (p_hint == ShaderLanguage::ShaderNode::Uniform::HINT_COLOR) {
    2717. 

  2717. 					value = Variant(Color(p_value[0].real, p_value[1].real, p_value[2].real, p_value[3].real));
    2718. 

  2718. 				} else {
    2719. 

  2719. 					value = Variant(Plane(p_value[0].real, p_value[1].real, p_value[2].real, p_value[3].real));
    2720. 

  2720. 				}
    2721. 

  2721. 				break;
    2722. 

  2722. 			case ShaderLanguage::TYPE_MAT2:
    2723. 

  2723. 				value = Variant(Transform2D(p_value[0].real, p_value[2].real, p_value[1].real, p_value[3].real, 0.0, 0.0));
    2724. 

  2724. 				break;
    2725. 

  2725. 			case ShaderLanguage::TYPE_MAT3: {
    2726. 

  2726. 				Basis p;
    2727. 

  2727. 				p[0][0] = p_value[0].real;
    2728. 

  2728. 				p[0][1] = p_value[1].real;
    2729. 

  2729. 				p[0][2] = p_value[2].real;
    2730. 

  2730. 				p[1][0] = p_value[3].real;
    2731. 

  2731. 				p[1][1] = p_value[4].real;
    2732. 

  2732. 				p[1][2] = p_value[5].real;
    2733. 

  2733. 				p[2][0] = p_value[6].real;
    2734. 

  2734. 				p[2][1] = p_value[7].real;
    2735. 

  2735. 				p[2][2] = p_value[8].real;
    2736. 

  2736. 				value = Variant(p);
    2737. 

  2737. 				break;
    2738. 

  2738. 			}
    2739. 

  2739. 			case ShaderLanguage::TYPE_MAT4: {
    2740. 

  2740. 				Basis p;
    2741. 

  2741. 				p[0][0] = p_value[0].real;
    2742. 

  2742. 				p[0][1] = p_value[1].real;
    2743. 

  2743. 				p[0][2] = p_value[2].real;
    2744. 

  2744. 				p[1][0] = p_value[4].real;
    2745. 

  2745. 				p[1][1] = p_value[5].real;
    2746. 

  2746. 				p[1][2] = p_value[6].real;
    2747. 

  2747. 				p[2][0] = p_value[8].real;
    2748. 

  2748. 				p[2][1] = p_value[9].real;
    2749. 

  2749. 				p[2][2] = p_value[10].real;
    2750. 

  2750. 				Transform t = Transform(p, Vector3(p_value[3].real, p_value[7].real, p_value[11].real));
    2751. 

  2751. 				value = Variant(t);
    2752. 

  2752. 				break;
    2753. 

  2753. 			}
    2754. 

  2754. 			case ShaderLanguage::TYPE_ISAMPLER2DARRAY:
    2755. 

  2755. 			case ShaderLanguage::TYPE_ISAMPLER2D:
    2756. 

  2756. 			case ShaderLanguage::TYPE_ISAMPLER3D:
    2757. 

  2757. 			case ShaderLanguage::TYPE_SAMPLER2DARRAY:
    2758. 

  2758. 			case ShaderLanguage::TYPE_SAMPLER2D:
    2759. 

  2759. 			case ShaderLanguage::TYPE_SAMPLER3D:
    2760. 

  2760. 			case ShaderLanguage::TYPE_USAMPLER2DARRAY:
    2761. 

  2761. 			case ShaderLanguage::TYPE_USAMPLER2D:
    2762. 

  2762. 			case ShaderLanguage::TYPE_USAMPLER3D:
    2763. 

  2763. 			case ShaderLanguage::TYPE_SAMPLERCUBE:
    2764. 

  2764. 			case ShaderLanguage::TYPE_SAMPLERCUBEARRAY: {
    2765. 

  2765. 				// Texture types, likely not relevant here.
    2766. 

  2766. 				break;
    2767. 

  2767. 			}
    2768. 

  2768. 			case ShaderLanguage::TYPE_STRUCT:
    2769. 

  2769. 				break;
    2770. 

  2770. 			case ShaderLanguage::TYPE_VOID:
    2771. 

  2771. 				break;
    2772. 

  2772. 			case ShaderLanguage::TYPE_MAX:
    2773. 

  2773. 				break;
    2774. 

  2774. 		}
    2775. 

  2775. 		return value;
    2776. 

  2776. 	}
    2777. 

  2777. 	return Variant();
    2778. 

  2778. }
    2779. 

  2779. 

  2780. PropertyInfo ShaderLanguage::uniform_to_property_info(const ShaderNode::Uniform &p_uniform) {
    2781. 

  2781. 	PropertyInfo pi;
    2782. 

  2782. 	switch (p_uniform.type) {
    2783. 

  2783. 		case ShaderLanguage::TYPE_VOID:
    2784. 

  2784. 			pi.type = Variant::NIL;
    2785. 

  2785. 			break;
    2786. 

  2786. 		case ShaderLanguage::TYPE_BOOL:
    2787. 

  2787. 			pi.type = Variant::BOOL;
    2788. 

  2788. 			break;
    2789. 

  2789. 		case ShaderLanguage::TYPE_BVEC2:
    2790. 

  2790. 			pi.type = Variant::INT;
    2791. 

  2791. 			pi.hint = PROPERTY_HINT_FLAGS;
    2792. 

  2792. 			pi.hint_string = "x,y";
    2793. 

  2793. 			break;
    2794. 

  2794. 		case ShaderLanguage::TYPE_BVEC3:
    2795. 

  2795. 			pi.type = Variant::INT;
    2796. 

  2796. 			pi.hint = PROPERTY_HINT_FLAGS;
    2797. 

  2797. 			pi.hint_string = "x,y,z";
    2798. 

  2798. 			break;
    2799. 

  2799. 		case ShaderLanguage::TYPE_BVEC4:
    2800. 

  2800. 			pi.type = Variant::INT;
    2801. 

  2801. 			pi.hint = PROPERTY_HINT_FLAGS;
    2802. 

  2802. 			pi.hint_string = "x,y,z,w";
    2803. 

  2803. 			break;
    2804. 

  2804. 		case ShaderLanguage::TYPE_UINT:
    2805. 

  2805. 		case ShaderLanguage::TYPE_INT: {
    2806. 

  2806. 			pi.type = Variant::INT;
    2807. 

  2807. 			if (p_uniform.hint == ShaderLanguage::ShaderNode::Uniform::HINT_RANGE) {
    2808. 

  2808. 				pi.hint = PROPERTY_HINT_RANGE;
    2809. 

  2809. 				pi.hint_string = rtos(p_uniform.hint_range[0]) + "," + rtos(p_uniform.hint_range[1]) + "," + rtos(p_uniform.hint_range[2]);
    2810. 

  2810. 			}
    2811. 

  2811. 

  2812. 		} break;
    2813. 

  2813. 		case ShaderLanguage::TYPE_IVEC2:
    2814. 

  2814. 		case ShaderLanguage::TYPE_IVEC3:
    2815. 

  2815. 		case ShaderLanguage::TYPE_IVEC4:
    2816. 

  2816. 		case ShaderLanguage::TYPE_UVEC2:
    2817. 

  2817. 		case ShaderLanguage::TYPE_UVEC3:
    2818. 

  2818. 		case ShaderLanguage::TYPE_UVEC4: {
    2819. 

  2819. 			pi.type = Variant::PACKED_INT32_ARRAY;
    2820. 

  2820. 		} break;
    2821. 

  2821. 		case ShaderLanguage::TYPE_FLOAT: {
    2822. 

  2822. 			pi.type = Variant::FLOAT;
    2823. 

  2823. 			if (p_uniform.hint == ShaderLanguage::ShaderNode::Uniform::HINT_RANGE) {
    2824. 

  2824. 				pi.hint = PROPERTY_HINT_RANGE;
    2825. 

  2825. 				pi.hint_string = rtos(p_uniform.hint_range[0]) + "," + rtos(p_uniform.hint_range[1]) + "," + rtos(p_uniform.hint_range[2]);
    2826. 

  2826. 			}
    2827. 

  2827. 

  2828. 		} break;
    2829. 

  2829. 		case ShaderLanguage::TYPE_VEC2:
    2830. 

  2830. 			pi.type = Variant::VECTOR2;
    2831. 

  2831. 			break;
    2832. 

  2832. 		case ShaderLanguage::TYPE_VEC3:
    2833. 

  2833. 			pi.type = Variant::VECTOR3;
    2834. 

  2834. 			break;
    2835. 

  2835. 		case ShaderLanguage::TYPE_VEC4: {
    2836. 

  2836. 			if (p_uniform.hint == ShaderLanguage::ShaderNode::Uniform::HINT_COLOR) {
    2837. 

  2837. 				pi.type = Variant::COLOR;
    2838. 

  2838. 			} else {
    2839. 

  2839. 				pi.type = Variant::PLANE;
    2840. 

  2840. 			}
    2841. 

  2841. 		} break;
    2842. 

  2842. 		case ShaderLanguage::TYPE_MAT2:
    2843. 

  2843. 			pi.type = Variant::TRANSFORM2D;
    2844. 

  2844. 			break;
    2845. 

  2845. 		case ShaderLanguage::TYPE_MAT3:
    2846. 

  2846. 			pi.type = Variant::BASIS;
    2847. 

  2847. 			break;
    2848. 

  2848. 		case ShaderLanguage::TYPE_MAT4:
    2849. 

  2849. 			pi.type = Variant::TRANSFORM;
    2850. 

  2850. 			break;
    2851. 

  2851. 		case ShaderLanguage::TYPE_SAMPLER2D:
    2852. 

  2852. 		case ShaderLanguage::TYPE_ISAMPLER2D:
    2853. 

  2853. 		case ShaderLanguage::TYPE_USAMPLER2D: {
    2854. 

  2854. 			pi.type = Variant::OBJECT;
    2855. 

  2855. 			pi.hint = PROPERTY_HINT_RESOURCE_TYPE;
    2856. 

  2856. 			pi.hint_string = "Texture2D";
    2857. 

  2857. 		} break;
    2858. 

  2858. 		case ShaderLanguage::TYPE_SAMPLER2DARRAY:
    2859. 

  2859. 		case ShaderLanguage::TYPE_ISAMPLER2DARRAY:
    2860. 

  2860. 		case ShaderLanguage::TYPE_USAMPLER2DARRAY: {
    2861. 

  2861. 			pi.type = Variant::OBJECT;
    2862. 

  2862. 			pi.hint = PROPERTY_HINT_RESOURCE_TYPE;
    2863. 

  2863. 			pi.hint_string = "TextureLayered";
    2864. 

  2864. 		} break;
    2865. 

  2865. 		case ShaderLanguage::TYPE_SAMPLER3D:
    2866. 

  2866. 		case ShaderLanguage::TYPE_ISAMPLER3D:
    2867. 

  2867. 		case ShaderLanguage::TYPE_USAMPLER3D: {
    2868. 

  2868. 			pi.type = Variant::OBJECT;
    2869. 

  2869. 			pi.hint = PROPERTY_HINT_RESOURCE_TYPE;
    2870. 

  2870. 			pi.hint_string = "Texture3D";
    2871. 

  2871. 		} break;
    2872. 

  2872. 		case ShaderLanguage::TYPE_SAMPLERCUBE:
    2873. 

  2873. 		case ShaderLanguage::TYPE_SAMPLERCUBEARRAY: {
    2874. 

  2874. 			pi.type = Variant::OBJECT;
    2875. 

  2875. 			pi.hint = PROPERTY_HINT_RESOURCE_TYPE;
    2876. 

  2876. 			pi.hint_string = "TextureLayered";
    2877. 

  2877. 		} break;
    2878. 

  2878. 		case ShaderLanguage::TYPE_STRUCT: {
    2879. 

  2879. 			// FIXME: Implement this.
    2880. 

  2880. 		} break;
    2881. 

  2881. 		case ShaderLanguage::TYPE_MAX:
    2882. 

  2882. 			break;
    2883. 

  2883. 	}
    2884. 

  2884. 	return pi;
    2885. 

  2885. }
    2886. 

  2886. 

  2887. uint32_t ShaderLanguage::get_type_size(DataType p_type) {
    2888. 

  2888. 	switch (p_type) {
    2889. 

  2889. 		case TYPE_VOID:
    2890. 

  2890. 			return 0;
    2891. 

  2891. 		case TYPE_BOOL:
    2892. 

  2892. 		case TYPE_INT:
    2893. 

  2893. 		case TYPE_UINT:
    2894. 

  2894. 		case TYPE_FLOAT:
    2895. 

  2895. 			return 4;
    2896. 

  2896. 		case TYPE_BVEC2:
    2897. 

  2897. 		case TYPE_IVEC2:
    2898. 

  2898. 		case TYPE_UVEC2:
    2899. 

  2899. 		case TYPE_VEC2:
    2900. 

  2900. 			return 8;
    2901. 

  2901. 		case TYPE_BVEC3:
    2902. 

  2902. 		case TYPE_IVEC3:
    2903. 

  2903. 		case TYPE_UVEC3:
    2904. 

  2904. 		case TYPE_VEC3:
    2905. 

  2905. 			return 12;
    2906. 

  2906. 		case TYPE_BVEC4:
    2907. 

  2907. 		case TYPE_IVEC4:
    2908. 

  2908. 		case TYPE_UVEC4:
    2909. 

  2909. 		case TYPE_VEC4:
    2910. 

  2910. 			return 16;
    2911. 

  2911. 		case TYPE_MAT2:
    2912. 

  2912. 			return 8;
    2913. 

  2913. 		case TYPE_MAT3:
    2914. 

  2914. 			return 12;
    2915. 

  2915. 		case TYPE_MAT4:
    2916. 

  2916. 			return 16;
    2917. 

  2917. 		case TYPE_SAMPLER2D:
    2918. 

  2918. 		case TYPE_ISAMPLER2D:
    2919. 

  2919. 		case TYPE_USAMPLER2D:
    2920. 

  2920. 		case TYPE_SAMPLER2DARRAY:
    2921. 

  2921. 		case TYPE_ISAMPLER2DARRAY:
    2922. 

  2922. 		case TYPE_USAMPLER2DARRAY:
    2923. 

  2923. 		case TYPE_SAMPLER3D:
    2924. 

  2924. 		case TYPE_ISAMPLER3D:
    2925. 

  2925. 		case TYPE_USAMPLER3D:
    2926. 

  2926. 		case TYPE_SAMPLERCUBE:
    2927. 

  2927. 		case TYPE_SAMPLERCUBEARRAY:
    2928. 

  2928. 			return 4; //not really, but useful for indices
    2929. 

  2929. 		case TYPE_STRUCT:
    2930. 

  2930. 			// FIXME: Implement.
    2931. 

  2931. 			return 0;
    2932. 

  2932. 		case ShaderLanguage::TYPE_MAX:
    2933. 

  2933. 			return 0;
    2934. 

  2934. 	}
    2935. 

  2935. 	return 0;
    2936. 

  2936. }
    2937. 

  2937. 

  2938. void ShaderLanguage::get_keyword_list(List<String> *r_keywords) {
    2939. 

  2939. 	Set<String> kws;
    2940. 

  2940. 

  2941. 	int idx = 0;
    2942. 

  2942. 

  2943. 	while (keyword_list[idx].text) {
    2944. 

  2944. 		kws.insert(keyword_list[idx].text);
    2945. 

  2945. 		idx++;
    2946. 

  2946. 	}
    2947. 

  2947. 

  2948. 	idx = 0;
    2949. 

  2949. 

  2950. 	while (builtin_func_defs[idx].name) {
    2951. 

  2951. 		kws.insert(builtin_func_defs[idx].name);
    2952. 

  2952. 

  2953. 		idx++;
    2954. 

  2954. 	}
    2955. 

  2955. 

  2956. 	for (Set<String>::Element *E = kws.front(); E; E = E->next()) {
    2957. 

  2957. 		r_keywords->push_back(E->get());
    2958. 

  2958. 	}
    2959. 

  2959. }
    2960. 

  2960. 

  2961. void ShaderLanguage::get_builtin_funcs(List<String> *r_keywords) {
    2962. 

  2962. 	Set<String> kws;
    2963. 

  2963. 

  2964. 	int idx = 0;
    2965. 

  2965. 

  2966. 	while (builtin_func_defs[idx].name) {
    2967. 

  2967. 		kws.insert(builtin_func_defs[idx].name);
    2968. 

  2968. 

  2969. 		idx++;
    2970. 

  2970. 	}
    2971. 

  2971. 

  2972. 	for (Set<String>::Element *E = kws.front(); E; E = E->next()) {
    2973. 

  2973. 		r_keywords->push_back(E->get());
    2974. 

  2974. 	}
    2975. 

  2975. }
    2976. 

  2976. 

  2977. ShaderLanguage::DataType ShaderLanguage::get_scalar_type(DataType p_type) {
    2978. 

  2978. 	static const DataType scalar_types[] = {
    2979. 

  2979. 		TYPE_VOID,
    2980. 

  2980. 		TYPE_BOOL,
    2981. 

  2981. 		TYPE_BOOL,
    2982. 

  2982. 		TYPE_BOOL,
    2983. 

  2983. 		TYPE_BOOL,
    2984. 

  2984. 		TYPE_INT,
    2985. 

  2985. 		TYPE_INT,
    2986. 

  2986. 		TYPE_INT,
    2987. 

  2987. 		TYPE_INT,
    2988. 

  2988. 		TYPE_UINT,
    2989. 

  2989. 		TYPE_UINT,
    2990. 

  2990. 		TYPE_UINT,
    2991. 

  2991. 		TYPE_UINT,
    2992. 

  2992. 		TYPE_FLOAT,
    2993. 

  2993. 		TYPE_FLOAT,
    2994. 

  2994. 		TYPE_FLOAT,
    2995. 

  2995. 		TYPE_FLOAT,
    2996. 

  2996. 		TYPE_FLOAT,
    2997. 

  2997. 		TYPE_FLOAT,
    2998. 

  2998. 		TYPE_FLOAT,
    2999. 

  2999. 		TYPE_FLOAT,
    3000. 

  3000. 		TYPE_INT,
    3001. 

  3001. 		TYPE_UINT,
    3002. 

  3002. 		TYPE_FLOAT,
    3003. 

  3003. 	};
    3004. 

  3004. 

  3005. 	return scalar_types[p_type];
    3006. 

  3006. }
    3007. 

  3007. 

  3008. int ShaderLanguage::get_cardinality(DataType p_type) {
    3009. 

  3009. 	static const int cardinality_table[] = {
    3010. 

  3010. 		0,
    3011. 

  3011. 		1,
    3012. 

  3012. 		2,
    3013. 

  3013. 		3,
    3014. 

  3014. 		4,
    3015. 

  3015. 		1,
    3016. 

  3016. 		2,
    3017. 

  3017. 		3,
    3018. 

  3018. 		4,
    3019. 

  3019. 		1,
    3020. 

  3020. 		2,
    3021. 

  3021. 		3,
    3022. 

  3022. 		4,
    3023. 

  3023. 		1,
    3024. 

  3024. 		2,
    3025. 

  3025. 		3,
    3026. 

  3026. 		4,
    3027. 

  3027. 		4,
    3028. 

  3028. 		9,
    3029. 

  3029. 		16,
    3030. 

  3030. 		1,
    3031. 

  3031. 		1,
    3032. 

  3032. 		1,
    3033. 

  3033. 		1,
    3034. 

  3034. 	};
    3035. 

  3035. 

  3036. 	return cardinality_table[p_type];
    3037. 

  3037. }
    3038. 

  3038. 

  3039. bool ShaderLanguage::_get_completable_identifier(BlockNode *p_block, CompletionType p_type, StringName &identifier) {
    3040. 

  3040. 	identifier = StringName();
    3041. 

  3041. 

  3042. 	TkPos pos = { 0, 0 };
    3043. 

  3043. 

  3044. 	Token tk = _get_token();
    3045. 

  3045. 

  3046. 	if (tk.type == TK_IDENTIFIER) {
    3047. 

  3047. 		identifier = tk.text;
    3048. 

  3048. 		pos = _get_tkpos();
    3049. 

  3049. 		tk = _get_token();
    3050. 

  3050. 	}
    3051. 

  3051. 

  3052. 	if (tk.type == TK_CURSOR) {
    3053. 

  3053. 		completion_type = p_type;
    3054. 

  3054. 		completion_line = tk_line;
    3055. 

  3055. 		completion_block = p_block;
    3056. 

  3056. 

  3057. 		pos = _get_tkpos();
    3058. 

  3058. 		tk = _get_token();
    3059. 

  3059. 

  3060. 		if (tk.type == TK_IDENTIFIER) {
    3061. 

  3061. 			identifier = identifier.operator String() + tk.text.operator String();
    3062. 

  3062. 		} else {
    3063. 

  3063. 			_set_tkpos(pos);
    3064. 

  3064. 		}
    3065. 

  3065. 		return true;
    3066. 

  3066. 	} else if (identifier != StringName()) {
    3067. 

  3067. 		_set_tkpos(pos);
    3068. 

  3068. 	}
    3069. 

  3069. 

  3070. 	return false;
    3071. 

  3071. }
    3072. 

  3072. 

  3073. bool ShaderLanguage::_is_operator_assign(Operator p_op) const {
    3074. 

  3074. 	switch (p_op) {
    3075. 

  3075. 		case OP_ASSIGN:
    3076. 

  3076. 		case OP_ASSIGN_ADD:
    3077. 

  3077. 		case OP_ASSIGN_SUB:
    3078. 

  3078. 		case OP_ASSIGN_MUL:
    3079. 

  3079. 		case OP_ASSIGN_DIV:
    3080. 

  3080. 		case OP_ASSIGN_MOD:
    3081. 

  3081. 		case OP_ASSIGN_SHIFT_LEFT:
    3082. 

  3082. 		case OP_ASSIGN_SHIFT_RIGHT:
    3083. 

  3083. 		case OP_ASSIGN_BIT_AND:
    3084. 

  3084. 		case OP_ASSIGN_BIT_OR:
    3085. 

  3085. 		case OP_ASSIGN_BIT_XOR:
    3086. 

  3086. 			return true;
    3087. 

  3087. 		default:
    3088. 

  3088. 			return false;
    3089. 

  3089. 	}
    3090. 

  3090. 

  3091. 	return false;
    3092. 

  3092. }
    3093. 

  3093. 

  3094. bool ShaderLanguage::_validate_assign(Node *p_node, const FunctionInfo &p_function_info, String *r_message) {
    3095. 

  3095. 	if (p_node->type == Node::TYPE_OPERATOR) {
    3096. 

  3096. 		OperatorNode *op = static_cast<OperatorNode *>(p_node);
    3097. 

  3097. 

  3098. 		if (op->op == OP_INDEX) {
    3099. 

  3099. 			return _validate_assign(op->arguments[0], p_function_info, r_message);
    3100. 

  3100. 

  3101. 		} else if (_is_operator_assign(op->op)) {
    3102. 

  3102. 			//chained assignment
    3103. 

  3103. 			return _validate_assign(op->arguments[1], p_function_info, r_message);
    3104. 

  3104. 

  3105. 		} else if (op->op == OP_CALL) {
    3106. 

  3106. 			if (r_message) {
    3107. 

  3107. 				*r_message = RTR("Assignment to function.");
    3108. 

  3108. 			}
    3109. 

  3109. 			return false;
    3110. 

  3110. 		}
    3111. 

  3111. 

  3112. 	} else if (p_node->type == Node::TYPE_MEMBER) {
    3113. 

  3113. 		MemberNode *member = static_cast<MemberNode *>(p_node);
    3114. 

  3114. 

  3115. 		if (member->has_swizzling_duplicates) {
    3116. 

  3116. 			if (r_message) {
    3117. 

  3117. 				*r_message = RTR("Swizzling assignment contains duplicates.");
    3118. 

  3118. 			}
    3119. 

  3119. 			return false;
    3120. 

  3120. 		}
    3121. 

  3121. 

  3122. 		return _validate_assign(member->owner, p_function_info, r_message);
    3123. 

  3123. 

  3124. 	} else if (p_node->type == Node::TYPE_VARIABLE) {
    3125. 

  3125. 		VariableNode *var = static_cast<VariableNode *>(p_node);
    3126. 

  3126. 

  3127. 		if (shader->uniforms.has(var->name)) {
    3128. 

  3128. 			if (r_message) {
    3129. 

  3129. 				*r_message = RTR("Assignment to uniform.");
    3130. 

  3130. 			}
    3131. 

  3131. 			return false;
    3132. 

  3132. 		}
    3133. 

  3133. 

  3134. 		if (shader->varyings.has(var->name) && current_function != String("vertex")) {
    3135. 

  3135. 			if (r_message) {
    3136. 

  3136. 				*r_message = RTR("Varyings can only be assigned in vertex function.");
    3137. 

  3137. 			}
    3138. 

  3138. 			return false;
    3139. 

  3139. 		}
    3140. 

  3140. 

  3141. 		if (shader->constants.has(var->name) || var->is_const) {
    3142. 

  3142. 			if (r_message) {
    3143. 

  3143. 				*r_message = RTR("Constants cannot be modified.");
    3144. 

  3144. 			}
    3145. 

  3145. 			return false;
    3146. 

  3146. 		}
    3147. 

  3147. 

  3148. 		if (!(p_function_info.built_ins.has(var->name) && p_function_info.built_ins[var->name].constant)) {
    3149. 

  3149. 			return true;
    3150. 

  3150. 		}
    3151. 

  3151. 	} else if (p_node->type == Node::TYPE_ARRAY) {
    3152. 

  3152. 		ArrayNode *arr = static_cast<ArrayNode *>(p_node);
    3153. 

  3153. 

  3154. 		if (shader->constants.has(arr->name) || arr->is_const) {
    3155. 

  3155. 			if (r_message) {
    3156. 

  3156. 				*r_message = RTR("Constants cannot be modified.");
    3157. 

  3157. 			}
    3158. 

  3158. 			return false;
    3159. 

  3159. 		}
    3160. 

  3160. 

  3161. 		if (shader->varyings.has(arr->name) && current_function != String("vertex")) {
    3162. 

  3162. 			if (r_message) {
    3163. 

  3163. 				*r_message = RTR("Varyings can only be assigned in vertex function.");
    3164. 

  3164. 			}
    3165. 

  3165. 			return false;
    3166. 

  3166. 		}
    3167. 

  3167. 

  3168. 		return true;
    3169. 

  3169. 	}
    3170. 

  3170. 

  3171. 	if (r_message) {
    3172. 

  3172. 		*r_message = "Assignment to constant expression.";
    3173. 

  3173. 	}
    3174. 

  3174. 	return false;
    3175. 

  3175. }
    3176. 

  3176. 

  3177. bool ShaderLanguage::_propagate_function_call_sampler_uniform_settings(StringName p_name, int p_argument, TextureFilter p_filter, TextureRepeat p_repeat) {
    3178. 

  3178. 	for (int i = 0; shader->functions.size(); i++) {
    3179. 

  3179. 		if (shader->functions[i].name == p_name) {
    3180. 

  3180. 			ERR_FAIL_INDEX_V(p_argument, shader->functions[i].function->arguments.size(), false);
    3181. 

  3181. 			FunctionNode::Argument *arg = &shader->functions[i].function->arguments.write[p_argument];
    3182. 

  3182. 			if (arg->tex_builtin_check) {
    3183. 

  3183. 				_set_error("Sampler argument #" + itos(p_argument) + " of function '" + String(p_name) + "' called more than once using both built-ins and uniform textures, this is not supported (use either one or the other).");
    3184. 

  3184. 				return false;
    3185. 

  3185. 			} else if (arg->tex_argument_check) {
    3186. 

  3186. 				//was checked, verify that filter and repeat are the same
    3187. 

  3187. 				if (arg->tex_argument_filter == p_filter && arg->tex_argument_repeat == p_repeat) {
    3188. 

  3188. 					return true;
    3189. 

  3189. 				} else {
    3190. 

  3190. 					_set_error("Sampler argument #" + itos(p_argument) + " of function '" + String(p_name) + "' called more than once using textures that differ in either filter or repeat setting.");
    3191. 

  3191. 					return false;
    3192. 

  3192. 				}
    3193. 

  3193. 			} else {
    3194. 

  3194. 				arg->tex_argument_check = true;
    3195. 

  3195. 				arg->tex_argument_filter = p_filter;
    3196. 

  3196. 				arg->tex_argument_repeat = p_repeat;
    3197. 

  3197. 				for (Map<StringName, Set<int>>::Element *E = arg->tex_argument_connect.front(); E; E = E->next()) {
    3198. 

  3198. 					for (Set<int>::Element *F = E->get().front(); F; F = F->next()) {
    3199. 

  3199. 						if (!_propagate_function_call_sampler_uniform_settings(E->key(), F->get(), p_filter, p_repeat)) {
    3200. 

  3200. 							return false;
    3201. 

  3201. 						}
    3202. 

  3202. 					}
    3203. 

  3203. 				}
    3204. 

  3204. 				return true;
    3205. 

  3205. 			}
    3206. 

  3206. 		}
    3207. 

  3207. 	}
    3208. 

  3208. 	ERR_FAIL_V(false); //bug? function not found
    3209. 

  3209. }
    3210. 

  3210. 

  3211. bool ShaderLanguage::_propagate_function_call_sampler_builtin_reference(StringName p_name, int p_argument, const StringName &p_builtin) {
    3212. 

  3212. 	for (int i = 0; shader->functions.size(); i++) {
    3213. 

  3213. 		if (shader->functions[i].name == p_name) {
    3214. 

  3214. 			ERR_FAIL_INDEX_V(p_argument, shader->functions[i].function->arguments.size(), false);
    3215. 

  3215. 			FunctionNode::Argument *arg = &shader->functions[i].function->arguments.write[p_argument];
    3216. 

  3216. 			if (arg->tex_argument_check) {
    3217. 

  3217. 				_set_error("Sampler argument #" + itos(p_argument) + " of function '" + String(p_name) + "' called more than once using both built-ins and uniform textures, this is not supported (use either one or the other).");
    3218. 

  3218. 				return false;
    3219. 

  3219. 			} else if (arg->tex_builtin_check) {
    3220. 

  3220. 				//was checked, verify that the built-in is the same
    3221. 

  3221. 				if (arg->tex_builtin == p_builtin) {
    3222. 

  3222. 					return true;
    3223. 

  3223. 				} else {
    3224. 

  3224. 					_set_error("Sampler argument #" + itos(p_argument) + " of function '" + String(p_name) + "' called more than once using different built-ins. Only calling with the same built-in is supported.");
    3225. 

  3225. 					return false;
    3226. 

  3226. 				}
    3227. 

  3227. 			} else {
    3228. 

  3228. 				arg->tex_builtin_check = true;
    3229. 

  3229. 				arg->tex_builtin = p_builtin;
    3230. 

  3230. 

  3231. 				for (Map<StringName, Set<int>>::Element *E = arg->tex_argument_connect.front(); E; E = E->next()) {
    3232. 

  3232. 					for (Set<int>::Element *F = E->get().front(); F; F = F->next()) {
    3233. 

  3233. 						if (!_propagate_function_call_sampler_builtin_reference(E->key(), F->get(), p_builtin)) {
    3234. 

  3234. 							return false;
    3235. 

  3235. 						}
    3236. 

  3236. 					}
    3237. 

  3237. 				}
    3238. 

  3238. 				return true;
    3239. 

  3239. 			}
    3240. 

  3240. 		}
    3241. 

  3241. 	}
    3242. 

  3242. 	ERR_FAIL_V(false); //bug? function not found
    3243. 

  3243. }
    3244. 

  3244. 

  3245. ShaderLanguage::Node *ShaderLanguage::_parse_expression(BlockNode *p_block, const FunctionInfo &p_function_info) {
    3246. 

  3246. 	Vector<Expression> expression;
    3247. 

  3247. 

  3248. 	//Vector<TokenType> operators;
    3249. 

  3249. 

  3250. 	while (true) {
    3251. 

  3251. 		Node *expr = nullptr;
    3252. 

  3252. 		TkPos prepos = _get_tkpos();
    3253. 

  3253. 		Token tk = _get_token();
    3254. 

  3254. 		TkPos pos = _get_tkpos();
    3255. 

  3255. 

  3256. 		bool is_const = false;
    3257. 

  3257. 

  3258. 		if (tk.type == TK_PARENTHESIS_OPEN) {
    3259. 

  3259. 			//handle subexpression
    3260. 

  3260. 

  3261. 			expr = _parse_and_reduce_expression(p_block, p_function_info);
    3262. 

  3262. 			if (!expr) {
    3263. 

  3263. 				return nullptr;
    3264. 

  3264. 			}
    3265. 

  3265. 

  3266. 			tk = _get_token();
    3267. 

  3267. 

  3268. 			if (tk.type != TK_PARENTHESIS_CLOSE) {
    3269. 

  3269. 				_set_error("Expected ')' in expression");
    3270. 

  3270. 				return nullptr;
    3271. 

  3271. 			}
    3272. 

  3272. 

  3273. 		} else if (tk.type == TK_REAL_CONSTANT) {
    3274. 

  3274. 			ConstantNode *constant = alloc_node<ConstantNode>();
    3275. 

  3275. 			ConstantNode::Value v;
    3276. 

  3276. 			v.real = tk.constant;
    3277. 

  3277. 			constant->values.push_back(v);
    3278. 

  3278. 			constant->datatype = TYPE_FLOAT;
    3279. 

  3279. 			expr = constant;
    3280. 

  3280. 

  3281. 		} else if (tk.type == TK_INT_CONSTANT) {
    3282. 

  3282. 			ConstantNode *constant = alloc_node<ConstantNode>();
    3283. 

  3283. 			ConstantNode::Value v;
    3284. 

  3284. 			v.sint = tk.constant;
    3285. 

  3285. 			constant->values.push_back(v);
    3286. 

  3286. 			constant->datatype = TYPE_INT;
    3287. 

  3287. 			expr = constant;
    3288. 

  3288. 

  3289. 		} else if (tk.type == TK_TRUE) {
    3290. 

  3290. 			//handle true constant
    3291. 

  3291. 			ConstantNode *constant = alloc_node<ConstantNode>();
    3292. 

  3292. 			ConstantNode::Value v;
    3293. 

  3293. 			v.boolean = true;
    3294. 

  3294. 			constant->values.push_back(v);
    3295. 

  3295. 			constant->datatype = TYPE_BOOL;
    3296. 

  3296. 			expr = constant;
    3297. 

  3297. 

  3298. 		} else if (tk.type == TK_FALSE) {
    3299. 

  3299. 			//handle false constant
    3300. 

  3300. 			ConstantNode *constant = alloc_node<ConstantNode>();
    3301. 

  3301. 			ConstantNode::Value v;
    3302. 

  3302. 			v.boolean = false;
    3303. 

  3303. 			constant->values.push_back(v);
    3304. 

  3304. 			constant->datatype = TYPE_BOOL;
    3305. 

  3305. 			expr = constant;
    3306. 

  3306. 

  3307. 		} else if (tk.type == TK_TYPE_VOID) {
    3308. 

  3308. 			//make sure void is not used in expression
    3309. 

  3309. 			_set_error("Void value not allowed in Expression");
    3310. 

  3310. 			return nullptr;
    3311. 

  3311. 		} else if (is_token_nonvoid_datatype(tk.type)) {
    3312. 

  3312. 			//basic type constructor
    3313. 

  3313. 

  3314. 			OperatorNode *func = alloc_node<OperatorNode>();
    3315. 

  3315. 			func->op = OP_CONSTRUCT;
    3316. 

  3316. 

  3317. 			if (is_token_precision(tk.type)) {
    3318. 

  3318. 				func->return_precision_cache = get_token_precision(tk.type);
    3319. 

  3319. 				tk = _get_token();
    3320. 

  3320. 			}
    3321. 

  3321. 

  3322. 			VariableNode *funcname = alloc_node<VariableNode>();
    3323. 

  3323. 			funcname->name = get_datatype_name(get_token_datatype(tk.type));
    3324. 

  3324. 			func->arguments.push_back(funcname);
    3325. 

  3325. 

  3326. 			tk = _get_token();
    3327. 

  3327. 			if (tk.type != TK_PARENTHESIS_OPEN) {
    3328. 

  3328. 				_set_error("Expected '(' after type name");
    3329. 

  3329. 				return nullptr;
    3330. 

  3330. 			}
    3331. 

  3331. 

  3332. 			int carg = -1;
    3333. 

  3333. 

  3334. 			bool ok = _parse_function_arguments(p_block, p_function_info, func, &carg);
    3335. 

  3335. 

  3336. 			if (carg >= 0) {
    3337. 

  3337. 				completion_type = COMPLETION_CALL_ARGUMENTS;
    3338. 

  3338. 				completion_line = tk_line;
    3339. 

  3339. 				completion_block = p_block;
    3340. 

  3340. 				completion_function = funcname->name;
    3341. 

  3341. 				completion_argument = carg;
    3342. 

  3342. 			}
    3343. 

  3343. 

  3344. 			if (!ok) {
    3345. 

  3345. 				return nullptr;
    3346. 

  3346. 			}
    3347. 

  3347. 

  3348. 			if (!_validate_function_call(p_block, p_function_info, func, &func->return_cache, &func->struct_name)) {
    3349. 

  3349. 				_set_error("No matching constructor found for: '" + String(funcname->name) + "'");
    3350. 

  3350. 				return nullptr;
    3351. 

  3351. 			}
    3352. 

  3352. 

  3353. 			expr = _reduce_expression(p_block, func);
    3354. 

  3354. 

  3355. 		} else if (tk.type == TK_IDENTIFIER) {
    3356. 

  3356. 			_set_tkpos(prepos);
    3357. 

  3357. 

  3358. 			StringName identifier;
    3359. 

  3359. 

  3360. 			StructNode *pstruct = nullptr;
    3361. 

  3361. 			bool struct_init = false;
    3362. 

  3362. 

  3363. 			_get_completable_identifier(p_block, COMPLETION_IDENTIFIER, identifier);
    3364. 

  3364. 

  3365. 			if (shader->structs.has(identifier)) {
    3366. 

  3366. 				pstruct = shader->structs[identifier].shader_struct;
    3367. 

  3367. 				struct_init = true;
    3368. 

  3368. 			}
    3369. 

  3369. 

  3370. 			tk = _get_token();
    3371. 

  3371. 			if (tk.type == TK_PARENTHESIS_OPEN) {
    3372. 

  3372. 				if (struct_init) { //a struct constructor
    3373. 

  3373. 

  3374. 					const StringName &name = identifier;
    3375. 

  3375. 

  3376. 					OperatorNode *func = alloc_node<OperatorNode>();
    3377. 

  3377. 					func->op = OP_STRUCT;
    3378. 

  3378. 					func->struct_name = name;
    3379. 

  3379. 					func->return_cache = TYPE_STRUCT;
    3380. 

  3380. 					VariableNode *funcname = alloc_node<VariableNode>();
    3381. 

  3381. 					funcname->name = name;
    3382. 

  3382. 					func->arguments.push_back(funcname);
    3383. 

  3383. 

  3384. 					for (int i = 0; i < pstruct->members.size(); i++) {
    3385. 

  3385. 						Node *nexpr;
    3386. 

  3386. 

  3387. 						if (pstruct->members[i]->array_size != 0) {
    3388. 

  3388. 							DataType type = pstruct->members[i]->get_datatype();
    3389. 

  3389. 							String struct_name = pstruct->members[i]->struct_name;
    3390. 

  3390. 							int array_size = pstruct->members[i]->array_size;
    3391. 

  3391. 

  3392. 							DataType type2;
    3393. 

  3393. 							String struct_name2 = "";
    3394. 

  3394. 							int array_size2 = 0;
    3395. 

  3395. 

  3396. 							bool auto_size = false;
    3397. 

  3397. 

  3398. 							tk = _get_token();
    3399. 

  3399. 

  3400. 							if (tk.type == TK_CURLY_BRACKET_OPEN) {
    3401. 

  3401. 								auto_size = true;
    3402. 

  3402. 							} else {
    3403. 

  3403. 								if (shader->structs.has(tk.text)) {
    3404. 

  3404. 									type2 = TYPE_STRUCT;
    3405. 

  3405. 									struct_name2 = tk.text;
    3406. 

  3406. 								} else {
    3407. 

  3407. 									if (!is_token_variable_datatype(tk.type)) {
    3408. 

  3408. 										_set_error("Invalid data type for array");
    3409. 

  3409. 										return nullptr;
    3410. 

  3410. 									}
    3411. 

  3411. 									type2 = get_token_datatype(tk.type);
    3412. 

  3412. 								}
    3413. 

  3413. 

  3414. 								tk = _get_token();
    3415. 

  3415. 								if (tk.type == TK_BRACKET_OPEN) {
    3416. 

  3416. 									TkPos pos2 = _get_tkpos();
    3417. 

  3417. 									tk = _get_token();
    3418. 

  3418. 									if (tk.type == TK_BRACKET_CLOSE) {
    3419. 

  3419. 										array_size2 = array_size;
    3420. 

  3420. 										tk = _get_token();
    3421. 

  3421. 									} else {
    3422. 

  3422. 										_set_tkpos(pos2);
    3423. 

  3423. 

  3424. 										Node *n = _parse_and_reduce_expression(p_block, p_function_info);
    3425. 

  3425. 										if (!n || n->type != Node::TYPE_CONSTANT || n->get_datatype() != TYPE_INT) {
    3426. 

  3426. 											_set_error("Expected single integer constant > 0");
    3427. 

  3427. 											return nullptr;
    3428. 

  3428. 										}
    3429. 

  3429. 

  3430. 										ConstantNode *cnode = (ConstantNode *)n;
    3431. 

  3431. 										if (cnode->values.size() == 1) {
    3432. 

  3432. 											array_size2 = cnode->values[0].sint;
    3433. 

  3433. 											if (array_size2 <= 0) {
    3434. 

  3434. 												_set_error("Expected single integer constant > 0");
    3435. 

  3435. 												return nullptr;
    3436. 

  3436. 											}
    3437. 

  3437. 										} else {
    3438. 

  3438. 											_set_error("Expected single integer constant > 0");
    3439. 

  3439. 											return nullptr;
    3440. 

  3440. 										}
    3441. 

  3441. 

  3442. 										tk = _get_token();
    3443. 

  3443. 										if (tk.type != TK_BRACKET_CLOSE) {
    3444. 

  3444. 											_set_error("Expected ']'");
    3445. 

  3445. 											return nullptr;
    3446. 

  3446. 										} else {
    3447. 

  3447. 											tk = _get_token();
    3448. 

  3448. 										}
    3449. 

  3449. 									}
    3450. 

  3450. 								} else {
    3451. 

  3451. 									_set_error("Expected '['");
    3452. 

  3452. 									return nullptr;
    3453. 

  3453. 								}
    3454. 

  3454. 

  3455. 								if (type != type2 || struct_name != struct_name2 || array_size != array_size2) {
    3456. 

  3456. 									String error_str = "Cannot convert from '";
    3457. 

  3457. 									if (type2 == TYPE_STRUCT) {
    3458. 

  3458. 										error_str += struct_name2;
    3459. 

  3459. 									} else {
    3460. 

  3460. 										error_str += get_datatype_name(type2);
    3461. 

  3461. 									}
    3462. 

  3462. 									error_str += "[";
    3463. 

  3463. 									error_str += itos(array_size2);
    3464. 

  3464. 									error_str += "]'";
    3465. 

  3465. 									error_str += " to '";
    3466. 

  3466. 									if (type == TYPE_STRUCT) {
    3467. 

  3467. 										error_str += struct_name;
    3468. 

  3468. 									} else {
    3469. 

  3469. 										error_str += get_datatype_name(type);
    3470. 

  3470. 									}
    3471. 

  3471. 									error_str += "[";
    3472. 

  3472. 									error_str += itos(array_size);
    3473. 

  3473. 									error_str += "]'";
    3474. 

  3474. 									_set_error(error_str);
    3475. 

  3475. 									return nullptr;
    3476. 

  3476. 								}
    3477. 

  3477. 							}
    3478. 

  3478. 

  3479. 							ArrayConstructNode *an = alloc_node<ArrayConstructNode>();
    3480. 

  3480. 							an->datatype = type;
    3481. 

  3481. 							an->struct_name = struct_name;
    3482. 

  3482. 

  3483. 							if (tk.type == TK_PARENTHESIS_OPEN || auto_size) { // initialization
    3484. 

  3484. 								while (true) {
    3485. 

  3485. 									Node *n = _parse_and_reduce_expression(p_block, p_function_info);
    3486. 

  3486. 									if (!n) {
    3487. 

  3487. 										return nullptr;
    3488. 

  3488. 									}
    3489. 

  3489. 

  3490. 									if (type != n->get_datatype() || struct_name != n->get_datatype_name()) {
    3491. 

  3491. 										_set_error("Invalid assignment of '" + (n->get_datatype() == TYPE_STRUCT ? n->get_datatype_name() : get_datatype_name(n->get_datatype())) + "' to '" + (type == TYPE_STRUCT ? struct_name : get_datatype_name(type)) + "'");
    3492. 

  3492. 										return nullptr;
    3493. 

  3493. 									}
    3494. 

  3494. 

  3495. 									tk = _get_token();
    3496. 

  3496. 									if (tk.type == TK_COMMA) {
    3497. 

  3497. 										an->initializer.push_back(n);
    3498. 

  3498. 										continue;
    3499. 

  3499. 									} else if (!auto_size && tk.type == TK_PARENTHESIS_CLOSE) {
    3500. 

  3500. 										an->initializer.push_back(n);
    3501. 

  3501. 										break;
    3502. 

  3502. 									} else if (auto_size && tk.type == TK_CURLY_BRACKET_CLOSE) {
    3503. 

  3503. 										an->initializer.push_back(n);
    3504. 

  3504. 										break;
    3505. 

  3505. 									} else {
    3506. 

  3506. 										if (auto_size) {
    3507. 

  3507. 											_set_error("Expected '}' or ','");
    3508. 

  3508. 										} else {
    3509. 

  3509. 											_set_error("Expected ')' or ','");
    3510. 

  3510. 										}
    3511. 

  3511. 										return nullptr;
    3512. 

  3512. 									}
    3513. 

  3513. 								}
    3514. 

  3514. 								if (an->initializer.size() != array_size) {
    3515. 

  3515. 									_set_error("Array size mismatch");
    3516. 

  3516. 									return nullptr;
    3517. 

  3517. 								}
    3518. 

  3518. 							} else {
    3519. 

  3519. 								_set_error("Expected array initialization!");
    3520. 

  3520. 								return nullptr;
    3521. 

  3521. 							}
    3522. 

  3522. 

  3523. 							nexpr = an;
    3524. 

  3524. 						} else {
    3525. 

  3525. 							nexpr = _parse_and_reduce_expression(p_block, p_function_info);
    3526. 

  3526. 							if (!nexpr) {
    3527. 

  3527. 								return nullptr;
    3528. 

  3528. 							}
    3529. 

  3529. 							Node *node = pstruct->members[i];
    3530. 

  3530. 							if (!_compare_datatypes_in_nodes(pstruct->members[i], nexpr)) {
    3531. 

  3531. 								String type_name = nexpr->get_datatype() == TYPE_STRUCT ? nexpr->get_datatype_name() : get_datatype_name(nexpr->get_datatype());
    3532. 

  3532. 								String type_name2 = node->get_datatype() == TYPE_STRUCT ? node->get_datatype_name() : get_datatype_name(node->get_datatype());
    3533. 

  3533. 								_set_error("Invalid assignment of '" + type_name + "' to '" + type_name2 + "'");
    3534. 

  3534. 								return nullptr;
    3535. 

  3535. 							}
    3536. 

  3536. 						}
    3537. 

  3537. 

  3538. 						if (i + 1 < pstruct->members.size()) {
    3539. 

  3539. 							tk = _get_token();
    3540. 

  3540. 							if (tk.type != TK_COMMA) {
    3541. 

  3541. 								_set_error("Expected ','");
    3542. 

  3542. 								return nullptr;
    3543. 

  3543. 							}
    3544. 

  3544. 						}
    3545. 

  3545. 						func->arguments.push_back(nexpr);
    3546. 

  3546. 					}
    3547. 

  3547. 					tk = _get_token();
    3548. 

  3548. 					if (tk.type != TK_PARENTHESIS_CLOSE) {
    3549. 

  3549. 						_set_error("Expected ')'");
    3550. 

  3550. 						return nullptr;
    3551. 

  3551. 					}
    3552. 

  3552. 

  3553. 					expr = func;
    3554. 

  3554. 

  3555. 				} else { //a function
    3556. 

  3556. 

  3557. 					const StringName &name = identifier;
    3558. 

  3558. 

  3559. 					OperatorNode *func = alloc_node<OperatorNode>();
    3560. 

  3560. 					func->op = OP_CALL;
    3561. 

  3561. 					VariableNode *funcname = alloc_node<VariableNode>();
    3562. 

  3562. 					funcname->name = name;
    3563. 

  3563. 					func->arguments.push_back(funcname);
    3564. 

  3564. 

  3565. 					int carg = -1;
    3566. 

  3566. 

  3567. 					bool ok = _parse_function_arguments(p_block, p_function_info, func, &carg);
    3568. 

  3568. 

  3569. 					// Check if block has a variable with the same name as function to prevent shader crash.
    3570. 

  3570. 					ShaderLanguage::BlockNode *bnode = p_block;
    3571. 

  3571. 					while (bnode) {
    3572. 

  3572. 						if (bnode->variables.has(name)) {
    3573. 

  3573. 							_set_error("Expected function name");
    3574. 

  3574. 							return nullptr;
    3575. 

  3575. 						}
    3576. 

  3576. 						bnode = bnode->parent_block;
    3577. 

  3577. 					}
    3578. 

  3578. 

  3579. 					//test if function was parsed first
    3580. 

  3580. 					int function_index = -1;
    3581. 

  3581. 					for (int i = 0; i < shader->functions.size(); i++) {
    3582. 

  3582. 						if (shader->functions[i].name == name) {
    3583. 

  3583. 							//add to current function as dependency
    3584. 

  3584. 							for (int j = 0; j < shader->functions.size(); j++) {
    3585. 

  3585. 								if (shader->functions[j].name == current_function) {
    3586. 

  3586. 									shader->functions.write[j].uses_function.insert(name);
    3587. 

  3587. 									break;
    3588. 

  3588. 								}
    3589. 

  3589. 							}
    3590. 

  3590. 

  3591. 							//see if texture arguments must connect
    3592. 

  3592. 							function_index = i;
    3593. 

  3593. 							break;
    3594. 

  3594. 						}
    3595. 

  3595. 					}
    3596. 

  3596. 

  3597. 					if (carg >= 0) {
    3598. 

  3598. 						completion_type = COMPLETION_CALL_ARGUMENTS;
    3599. 

  3599. 						completion_line = tk_line;
    3600. 

  3600. 						completion_block = p_block;
    3601. 

  3601. 						completion_function = funcname->name;
    3602. 

  3602. 						completion_argument = carg;
    3603. 

  3603. 					}
    3604. 

  3604. 

  3605. 					if (!ok) {
    3606. 

  3606. 						return nullptr;
    3607. 

  3607. 					}
    3608. 

  3608. 

  3609. 					if (!_validate_function_call(p_block, p_function_info, func, &func->return_cache, &func->struct_name)) {
    3610. 

  3610. 						_set_error("No matching function found for: '" + String(funcname->name) + "'");
    3611. 

  3611. 						return nullptr;
    3612. 

  3612. 					}
    3613. 

  3613. 					completion_class = TAG_GLOBAL; // reset sub-class
    3614. 

  3614. 					if (function_index >= 0) {
    3615. 

  3615. 						//connect texture arguments, so we can cache in the
    3616. 

  3616. 						//argument what type of filter and repeat to use
    3617. 

  3617. 

  3618. 						FunctionNode *call_function = shader->functions[function_index].function;
    3619. 

  3619. 						if (call_function) {
    3620. 

  3620. 							//get current base function
    3621. 

  3621. 							FunctionNode *base_function = nullptr;
    3622. 

  3622. 							{
    3623. 

  3623. 								BlockNode *b = p_block;
    3624. 

  3624. 

  3625. 								while (b) {
    3626. 

  3626. 									if (b->parent_function) {
    3627. 

  3627. 										base_function = b->parent_function;
    3628. 

  3628. 										break;
    3629. 

  3629. 									} else {
    3630. 

  3630. 										b = b->parent_block;
    3631. 

  3631. 									}
    3632. 

  3632. 								}
    3633. 

  3633. 							}
    3634. 

  3634. 

  3635. 							ERR_FAIL_COND_V(!base_function, nullptr); //bug, wtf
    3636. 

  3636. 

  3637. 							for (int i = 0; i < call_function->arguments.size(); i++) {
    3638. 

  3638. 								int argidx = i + 1;
    3639. 

  3639. 								if (argidx < func->arguments.size()) {
    3640. 

  3640. 									if (call_function->arguments[i].is_const || call_function->arguments[i].qualifier == ArgumentQualifier::ARGUMENT_QUALIFIER_OUT || call_function->arguments[i].qualifier == ArgumentQualifier::ARGUMENT_QUALIFIER_INOUT) {
    3641. 

  3641. 										bool error = false;
    3642. 

  3642. 										Node *n = func->arguments[argidx];
    3643. 

  3643. 										if (n->type == Node::TYPE_CONSTANT || n->type == Node::TYPE_OPERATOR) {
    3644. 

  3644. 											error = true;
    3645. 

  3645. 										} else if (n->type == Node::TYPE_ARRAY) {
    3646. 

  3646. 											ArrayNode *an = static_cast<ArrayNode *>(n);
    3647. 

  3647. 											if (an->call_expression != nullptr || an->is_const) {
    3648. 

  3648. 												error = true;
    3649. 

  3649. 											}
    3650. 

  3650. 										} else if (n->type == Node::TYPE_VARIABLE) {
    3651. 

  3651. 											VariableNode *vn = static_cast<VariableNode *>(n);
    3652. 

  3652. 											if (vn->is_const) {
    3653. 

  3653. 												error = true;
    3654. 

  3654. 											} else {
    3655. 

  3655. 												StringName varname = vn->name;
    3656. 

  3656. 												if (shader->constants.has(varname)) {
    3657. 

  3657. 													error = true;
    3658. 

  3658. 												} else if (shader->uniforms.has(varname)) {
    3659. 

  3659. 													error = true;
    3660. 

  3660. 												} else {
    3661. 

  3661. 													if (p_function_info.built_ins.has(varname)) {
    3662. 

  3662. 														BuiltInInfo info = p_function_info.built_ins[varname];
    3663. 

  3663. 														if (info.constant) {
    3664. 

  3664. 															error = true;
    3665. 

  3665. 														}
    3666. 

  3666. 													}
    3667. 

  3667. 												}
    3668. 

  3668. 											}
    3669. 

  3669. 										} else if (n->type == Node::TYPE_MEMBER) {
    3670. 

  3670. 											MemberNode *mn = static_cast<MemberNode *>(n);
    3671. 

  3671. 											if (mn->basetype_const) {
    3672. 

  3672. 												error = true;
    3673. 

  3673. 											}
    3674. 

  3674. 										}
    3675. 

  3675. 										if (error) {
    3676. 

  3676. 											_set_error(vformat("Constant value cannot be passed for '%s' parameter!", _get_qualifier_str(call_function->arguments[i].qualifier)));
    3677. 

  3677. 											return nullptr;
    3678. 

  3678. 										}
    3679. 

  3679. 									}
    3680. 

  3680. 									if (is_sampler_type(call_function->arguments[i].type)) {
    3681. 

  3681. 										//let's see where our argument comes from
    3682. 

  3682. 										Node *n = func->arguments[argidx];
    3683. 

  3683. 										ERR_CONTINUE(n->type != Node::TYPE_VARIABLE); //bug? this should always be a variable
    3684. 

  3684. 										VariableNode *vn = static_cast<VariableNode *>(n);
    3685. 

  3685. 										StringName varname = vn->name;
    3686. 

  3686. 										if (shader->uniforms.has(varname)) {
    3687. 

  3687. 											//being sampler, this either comes from a uniform
    3688. 

  3688. 											ShaderNode::Uniform *u = &shader->uniforms[varname];
    3689. 

  3689. 											ERR_CONTINUE(u->type != call_function->arguments[i].type); //this should have been validated previously
    3690. 

  3690. 											//propagate
    3691. 

  3691. 											if (!_propagate_function_call_sampler_uniform_settings(name, i, u->filter, u->repeat)) {
    3692. 

  3692. 												return nullptr;
    3693. 

  3693. 											}
    3694. 

  3694. 										} else if (p_function_info.built_ins.has(varname)) {
    3695. 

  3695. 											//a built-in
    3696. 

  3696. 											if (!_propagate_function_call_sampler_builtin_reference(name, i, varname)) {
    3697. 

  3697. 												return nullptr;
    3698. 

  3698. 											}
    3699. 

  3699. 										} else {
    3700. 

  3700. 											//or this comes from an argument, but nothing else can be a sampler
    3701. 

  3701. 											bool found = false;
    3702. 

  3702. 											for (int j = 0; j < base_function->arguments.size(); j++) {
    3703. 

  3703. 												if (base_function->arguments[j].name == varname) {
    3704. 

  3704. 													if (!base_function->arguments[j].tex_argument_connect.has(call_function->name)) {
    3705. 

  3705. 														base_function->arguments.write[j].tex_argument_connect[call_function->name] = Set<int>();
    3706. 

  3706. 													}
    3707. 

  3707. 													base_function->arguments.write[j].tex_argument_connect[call_function->name].insert(i);
    3708. 

  3708. 													found = true;
    3709. 

  3709. 													break;
    3710. 

  3710. 												}
    3711. 

  3711. 											}
    3712. 

  3712. 											ERR_CONTINUE(!found);
    3713. 

  3713. 										}
    3714. 

  3714. 									}
    3715. 

  3715. 								} else {
    3716. 

  3716. 									break;
    3717. 

  3717. 								}
    3718. 

  3718. 							}
    3719. 

  3719. 						}
    3720. 

  3720. 					}
    3721. 

  3721. 					expr = func;
    3722. 

  3722. 				}
    3723. 

  3723. 			} else {
    3724. 

  3724. 				//an identifier
    3725. 

  3725. 

  3726. 				_set_tkpos(pos);
    3727. 

  3727. 

  3728. 				DataType data_type;
    3729. 

  3729. 				IdentifierType ident_type;
    3730. 

  3730. 				int array_size = 0;
    3731. 

  3731. 				StringName struct_name;
    3732. 

  3732. 

  3733. 				if (p_block && p_block->block_tag != SubClassTag::TAG_GLOBAL) {
    3734. 

  3734. 					int idx = 0;
    3735. 

  3735. 					bool found = false;
    3736. 

  3736. 

  3737. 					while (builtin_func_defs[idx].name) {
    3738. 

  3738. 						if (builtin_func_defs[idx].tag == p_block->block_tag && builtin_func_defs[idx].name == identifier) {
    3739. 

  3739. 							found = true;
    3740. 

  3740. 							break;
    3741. 

  3741. 						}
    3742. 

  3742. 						idx++;
    3743. 

  3743. 					}
    3744. 

  3744. 					if (!found) {
    3745. 

  3745. 						_set_error("Unknown identifier in expression: " + String(identifier));
    3746. 

  3746. 						return nullptr;
    3747. 

  3747. 					}
    3748. 

  3748. 				} else {
    3749. 

  3749. 					if (!_find_identifier(p_block, false, p_function_info, identifier, &data_type, &ident_type, &is_const, &array_size, &struct_name)) {
    3750. 

  3750. 						_set_error("Unknown identifier in expression: " + String(identifier));
    3751. 

  3751. 						return nullptr;
    3752. 

  3752. 					}
    3753. 

  3753. 

  3754. 					if (ident_type == IDENTIFIER_FUNCTION) {
    3755. 

  3755. 						_set_error("Can't use function as identifier: " + String(identifier));
    3756. 

  3756. 						return nullptr;
    3757. 

  3757. 					}
    3758. 

  3758. 				}
    3759. 

  3759. 

  3760. 				Node *index_expression = nullptr;
    3761. 

  3761. 				Node *call_expression = nullptr;
    3762. 

  3762. 

  3763. 				if (array_size > 0) {
    3764. 

  3764. 					tk = _get_token();
    3765. 

  3765. 

  3766. 					if (tk.type != TK_BRACKET_OPEN && tk.type != TK_PERIOD) {
    3767. 

  3767. 						_set_error("Expected '[' or '.'");
    3768. 

  3768. 						return nullptr;
    3769. 

  3769. 					}
    3770. 

  3770. 

  3771. 					if (tk.type == TK_PERIOD) {
    3772. 

  3772. 						completion_class = TAG_ARRAY;
    3773. 

  3773. 						p_block->block_tag = SubClassTag::TAG_ARRAY;
    3774. 

  3774. 						call_expression = _parse_and_reduce_expression(p_block, p_function_info);
    3775. 

  3775. 						p_block->block_tag = SubClassTag::TAG_GLOBAL;
    3776. 

  3776. 						if (!call_expression) {
    3777. 

  3777. 							return nullptr;
    3778. 

  3778. 						}
    3779. 

  3779. 						data_type = call_expression->get_datatype();
    3780. 

  3780. 					} else { // indexing
    3781. 

  3781. 

  3782. 						index_expression = _parse_and_reduce_expression(p_block, p_function_info);
    3783. 

  3783. 						if (!index_expression) {
    3784. 

  3784. 							return nullptr;
    3785. 

  3785. 						}
    3786. 

  3786. 

  3787. 						if (index_expression->get_datatype() != TYPE_INT && index_expression->get_datatype() != TYPE_UINT) {
    3788. 

  3788. 							_set_error("Only integer expressions are allowed for indexing");
    3789. 

  3789. 							return nullptr;
    3790. 

  3790. 						}
    3791. 

  3791. 

  3792. 						if (index_expression->type == Node::TYPE_CONSTANT) {
    3793. 

  3793. 							ConstantNode *cnode = (ConstantNode *)index_expression;
    3794. 

  3794. 							if (cnode) {
    3795. 

  3795. 								if (!cnode->values.empty()) {
    3796. 

  3796. 									int value = cnode->values[0].sint;
    3797. 

  3797. 									if (value < 0 || value >= array_size) {
    3798. 

  3798. 										_set_error(vformat("Index [%s] out of range [%s..%s]", value, 0, array_size - 1));
    3799. 

  3799. 										return nullptr;
    3800. 

  3800. 									}
    3801. 

  3801. 								}
    3802. 

  3802. 							}
    3803. 

  3803. 						}
    3804. 

  3804. 

  3805. 						tk = _get_token();
    3806. 

  3806. 						if (tk.type != TK_BRACKET_CLOSE) {
    3807. 

  3807. 							_set_error("Expected ']'");
    3808. 

  3808. 							return nullptr;
    3809. 

  3809. 						}
    3810. 

  3810. 					}
    3811. 

  3811. 

  3812. 					ArrayNode *arrname = alloc_node<ArrayNode>();
    3813. 

  3813. 					arrname->name = identifier;
    3814. 

  3814. 					arrname->datatype_cache = data_type;
    3815. 

  3815. 					arrname->struct_name = struct_name;
    3816. 

  3816. 					arrname->index_expression = index_expression;
    3817. 

  3817. 					arrname->call_expression = call_expression;
    3818. 

  3818. 					arrname->is_const = is_const;
    3819. 

  3819. 					expr = arrname;
    3820. 

  3820. 

  3821. 				} else {
    3822. 

  3822. 					VariableNode *varname = alloc_node<VariableNode>();
    3823. 

  3823. 					varname->name = identifier;
    3824. 

  3824. 					varname->datatype_cache = data_type;
    3825. 

  3825. 					varname->is_const = is_const;
    3826. 

  3826. 					varname->struct_name = struct_name;
    3827. 

  3827. 					expr = varname;
    3828. 

  3828. 				}
    3829. 

  3829. 			}
    3830. 

  3830. 		} else if (tk.type == TK_OP_ADD) {
    3831. 

  3831. 			continue; //this one does nothing
    3832. 

  3832. 		} else if (tk.type == TK_OP_SUB || tk.type == TK_OP_NOT || tk.type == TK_OP_BIT_INVERT || tk.type == TK_OP_INCREMENT || tk.type == TK_OP_DECREMENT) {
    3833. 

  3833. 			Expression e;
    3834. 

  3834. 			e.is_op = true;
    3835. 

  3835. 

  3836. 			switch (tk.type) {
    3837. 

  3837. 				case TK_OP_SUB:
    3838. 

  3838. 					e.op = OP_NEGATE;
    3839. 

  3839. 					break;
    3840. 

  3840. 				case TK_OP_NOT:
    3841. 

  3841. 					e.op = OP_NOT;
    3842. 

  3842. 					break;
    3843. 

  3843. 				case TK_OP_BIT_INVERT:
    3844. 

  3844. 					e.op = OP_BIT_INVERT;
    3845. 

  3845. 					break;
    3846. 

  3846. 				case TK_OP_INCREMENT:
    3847. 

  3847. 					e.op = OP_INCREMENT;
    3848. 

  3848. 					break;
    3849. 

  3849. 				case TK_OP_DECREMENT:
    3850. 

  3850. 					e.op = OP_DECREMENT;
    3851. 

  3851. 					break;
    3852. 

  3852. 				default:
    3853. 

  3853. 					ERR_FAIL_V(nullptr);
    3854. 

  3854. 			}
    3855. 

  3855. 

  3856. 			expression.push_back(e);
    3857. 

  3857. 			continue;
    3858. 

  3858. 		} else {
    3859. 

  3859. 			_set_error("Expected expression, found: " + get_token_text(tk));
    3860. 

  3860. 			return nullptr;
    3861. 

  3861. 			//nothing
    3862. 

  3862. 		}
    3863. 

  3863. 

  3864. 		ERR_FAIL_COND_V(!expr, nullptr);
    3865. 

  3865. 

  3866. 		/* OK now see what's NEXT to the operator.. */
    3867. 

  3867. 		/* OK now see what's NEXT to the operator.. */
    3868. 

  3868. 		/* OK now see what's NEXT to the operator.. */
    3869. 

  3869. 

  3870. 		while (true) {
    3871. 

  3871. 			TkPos pos2 = _get_tkpos();
    3872. 

  3872. 			tk = _get_token();
    3873. 

  3873. 

  3874. 			if (tk.type == TK_CURSOR) {
    3875. 

  3875. 				//do nothing
    3876. 

  3876. 			} else if (tk.type == TK_IDENTIFIER) {
    3877. 

  3877. 			} else if (tk.type == TK_PERIOD) {
    3878. 

  3878. 				DataType dt = expr->get_datatype();
    3879. 

  3879. 				String st = expr->get_datatype_name();
    3880. 

  3880. 

  3881. 				StringName identifier;
    3882. 

  3882. 				if (_get_completable_identifier(p_block, dt == TYPE_STRUCT ? COMPLETION_STRUCT : COMPLETION_INDEX, identifier)) {
    3883. 

  3883. 					if (dt == TYPE_STRUCT) {
    3884. 

  3884. 						completion_struct = st;
    3885. 

  3885. 					} else {
    3886. 

  3886. 						completion_base = dt;
    3887. 

  3887. 					}
    3888. 

  3888. 				}
    3889. 

  3889. 

  3890. 				if (identifier == StringName()) {
    3891. 

  3891. 					_set_error("Expected identifier as member");
    3892. 

  3892. 					return nullptr;
    3893. 

  3893. 				}
    3894. 

  3894. 				String ident = identifier;
    3895. 

  3895. 

  3896. 				bool ok = true;
    3897. 

  3897. 				bool repeated = false;
    3898. 

  3898. 				DataType member_type = TYPE_VOID;
    3899. 

  3899. 				StringName member_struct_name = "";
    3900. 

  3900. 				int array_size = 0;
    3901. 

  3901. 

  3902. 				Set<char> position_symbols;
    3903. 

  3903. 				Set<char> color_symbols;
    3904. 

  3904. 				Set<char> texture_symbols;
    3905. 

  3905. 

  3906. 				bool mix_error = false;
    3907. 

  3907. 

  3908. 				switch (dt) {
    3909. 

  3909. 					case TYPE_STRUCT: {
    3910. 

  3910. 						ok = false;
    3911. 

  3911. 						String member_name = String(ident.ptr());
    3912. 

  3912. 						if (shader->structs.has(st)) {
    3913. 

  3913. 							StructNode *n = shader->structs[st].shader_struct;
    3914. 

  3914. 							for (List<MemberNode *>::Element *E = n->members.front(); E; E = E->next()) {
    3915. 

  3915. 								if (String(E->get()->name) == member_name) {
    3916. 

  3916. 									member_type = E->get()->datatype;
    3917. 

  3917. 									array_size = E->get()->array_size;
    3918. 

  3918. 									if (member_type == TYPE_STRUCT) {
    3919. 

  3919. 										member_struct_name = E->get()->struct_name;
    3920. 

  3920. 									}
    3921. 

  3921. 									ok = true;
    3922. 

  3922. 									break;
    3923. 

  3923. 								}
    3924. 

  3924. 							}
    3925. 

  3925. 						}
    3926. 

  3926. 

  3927. 					} break;
    3928. 

  3928. 					case TYPE_BVEC2:
    3929. 

  3929. 					case TYPE_IVEC2:
    3930. 

  3930. 					case TYPE_UVEC2:
    3931. 

  3931. 					case TYPE_VEC2: {
    3932. 

  3932. 						int l = ident.length();
    3933. 

  3933. 						if (l == 1) {
    3934. 

  3934. 							member_type = DataType(dt - 1);
    3935. 

  3935. 						} else if (l == 2) {
    3936. 

  3936. 							member_type = dt;
    3937. 

  3937. 						} else if (l == 3) {
    3938. 

  3938. 							member_type = DataType(dt + 1);
    3939. 

  3939. 						} else if (l == 4) {
    3940. 

  3940. 							member_type = DataType(dt + 2);
    3941. 

  3941. 						} else {
    3942. 

  3942. 							ok = false;
    3943. 

  3943. 							break;
    3944. 

  3944. 						}
    3945. 

  3945. 

  3946. 						const char32_t *c = ident.ptr();
    3947. 

  3947. 						for (int i = 0; i < l; i++) {
    3948. 

  3948. 							switch (c[i]) {
    3949. 

  3949. 								case 'r':
    3950. 

  3950. 								case 'g':
    3951. 

  3951. 									if (position_symbols.size() > 0 || texture_symbols.size() > 0) {
    3952. 

  3952. 										mix_error = true;
    3953. 

  3953. 										break;
    3954. 

  3954. 									}
    3955. 

  3955. 									if (!color_symbols.has(c[i])) {
    3956. 

  3956. 										color_symbols.insert(c[i]);
    3957. 

  3957. 									} else {
    3958. 

  3958. 										repeated = true;
    3959. 

  3959. 									}
    3960. 

  3960. 									break;
    3961. 

  3961. 								case 'x':
    3962. 

  3962. 								case 'y':
    3963. 

  3963. 									if (color_symbols.size() > 0 || texture_symbols.size() > 0) {
    3964. 

  3964. 										mix_error = true;
    3965. 

  3965. 										break;
    3966. 

  3966. 									}
    3967. 

  3967. 									if (!position_symbols.has(c[i])) {
    3968. 

  3968. 										position_symbols.insert(c[i]);
    3969. 

  3969. 									} else {
    3970. 

  3970. 										repeated = true;
    3971. 

  3971. 									}
    3972. 

  3972. 									break;
    3973. 

  3973. 								case 's':
    3974. 

  3974. 								case 't':
    3975. 

  3975. 									if (color_symbols.size() > 0 || position_symbols.size() > 0) {
    3976. 

  3976. 										mix_error = true;
    3977. 

  3977. 										break;
    3978. 

  3978. 									}
    3979. 

  3979. 									if (!texture_symbols.has(c[i])) {
    3980. 

  3980. 										texture_symbols.insert(c[i]);
    3981. 

  3981. 									} else {
    3982. 

  3982. 										repeated = true;
    3983. 

  3983. 									}
    3984. 

  3984. 									break;
    3985. 

  3985. 								default:
    3986. 

  3986. 									ok = false;
    3987. 

  3987. 									break;
    3988. 

  3988. 							}
    3989. 

  3989. 						}
    3990. 

  3990. 

  3991. 					} break;
    3992. 

  3992. 					case TYPE_BVEC3:
    3993. 

  3993. 					case TYPE_IVEC3:
    3994. 

  3994. 					case TYPE_UVEC3:
    3995. 

  3995. 					case TYPE_VEC3: {
    3996. 

  3996. 						int l = ident.length();
    3997. 

  3997. 						if (l == 1) {
    3998. 

  3998. 							member_type = DataType(dt - 2);
    3999. 

  3999. 						} else if (l == 2) {
    4000. 

  4000. 							member_type = DataType(dt - 1);
    4001. 

  4001. 						} else if (l == 3) {
    4002. 

  4002. 							member_type = dt;
    4003. 

  4003. 						} else if (l == 4) {
    4004. 

  4004. 							member_type = DataType(dt + 1);
    4005. 

  4005. 						} else {
    4006. 

  4006. 							ok = false;
    4007. 

  4007. 							break;
    4008. 

  4008. 						}
    4009. 

  4009. 

  4010. 						const char32_t *c = ident.ptr();
    4011. 

  4011. 						for (int i = 0; i < l; i++) {
    4012. 

  4012. 							switch (c[i]) {
    4013. 

  4013. 								case 'r':
    4014. 

  4014. 								case 'g':
    4015. 

  4015. 								case 'b':
    4016. 

  4016. 									if (position_symbols.size() > 0 || texture_symbols.size() > 0) {
    4017. 

  4017. 										mix_error = true;
    4018. 

  4018. 										break;
    4019. 

  4019. 									}
    4020. 

  4020. 									if (!color_symbols.has(c[i])) {
    4021. 

  4021. 										color_symbols.insert(c[i]);
    4022. 

  4022. 									} else {
    4023. 

  4023. 										repeated = true;
    4024. 

  4024. 									}
    4025. 

  4025. 									break;
    4026. 

  4026. 								case 'x':
    4027. 

  4027. 								case 'y':
    4028. 

  4028. 								case 'z':
    4029. 

  4029. 									if (color_symbols.size() > 0 || texture_symbols.size() > 0) {
    4030. 

  4030. 										mix_error = true;
    4031. 

  4031. 										break;
    4032. 

  4032. 									}
    4033. 

  4033. 									if (!position_symbols.has(c[i])) {
    4034. 

  4034. 										position_symbols.insert(c[i]);
    4035. 

  4035. 									} else {
    4036. 

  4036. 										repeated = true;
    4037. 

  4037. 									}
    4038. 

  4038. 									break;
    4039. 

  4039. 								case 's':
    4040. 

  4040. 								case 't':
    4041. 

  4041. 								case 'p':
    4042. 

  4042. 									if (color_symbols.size() > 0 || position_symbols.size() > 0) {
    4043. 

  4043. 										mix_error = true;
    4044. 

  4044. 										break;
    4045. 

  4045. 									}
    4046. 

  4046. 									if (!texture_symbols.has(c[i])) {
    4047. 

  4047. 										texture_symbols.insert(c[i]);
    4048. 

  4048. 									} else {
    4049. 

  4049. 										repeated = true;
    4050. 

  4050. 									}
    4051. 

  4051. 									break;
    4052. 

  4052. 								default:
    4053. 

  4053. 									ok = false;
    4054. 

  4054. 									break;
    4055. 

  4055. 							}
    4056. 

  4056. 						}
    4057. 

  4057. 

  4058. 					} break;
    4059. 

  4059. 					case TYPE_BVEC4:
    4060. 

  4060. 					case TYPE_IVEC4:
    4061. 

  4061. 					case TYPE_UVEC4:
    4062. 

  4062. 					case TYPE_VEC4: {
    4063. 

  4063. 						int l = ident.length();
    4064. 

  4064. 						if (l == 1) {
    4065. 

  4065. 							member_type = DataType(dt - 3);
    4066. 

  4066. 						} else if (l == 2) {
    4067. 

  4067. 							member_type = DataType(dt - 2);
    4068. 

  4068. 						} else if (l == 3) {
    4069. 

  4069. 							member_type = DataType(dt - 1);
    4070. 

  4070. 						} else if (l == 4) {
    4071. 

  4071. 							member_type = dt;
    4072. 

  4072. 						} else {
    4073. 

  4073. 							ok = false;
    4074. 

  4074. 							break;
    4075. 

  4075. 						}
    4076. 

  4076. 

  4077. 						const char32_t *c = ident.ptr();
    4078. 

  4078. 						for (int i = 0; i < l; i++) {
    4079. 

  4079. 							switch (c[i]) {
    4080. 

  4080. 								case 'r':
    4081. 

  4081. 								case 'g':
    4082. 

  4082. 								case 'b':
    4083. 

  4083. 								case 'a':
    4084. 

  4084. 									if (position_symbols.size() > 0 || texture_symbols.size() > 0) {
    4085. 

  4085. 										mix_error = true;
    4086. 

  4086. 										break;
    4087. 

  4087. 									}
    4088. 

  4088. 									if (!color_symbols.has(c[i])) {
    4089. 

  4089. 										color_symbols.insert(c[i]);
    4090. 

  4090. 									} else {
    4091. 

  4091. 										repeated = true;
    4092. 

  4092. 									}
    4093. 

  4093. 									break;
    4094. 

  4094. 								case 'x':
    4095. 

  4095. 								case 'y':
    4096. 

  4096. 								case 'z':
    4097. 

  4097. 								case 'w':
    4098. 

  4098. 									if (color_symbols.size() > 0 || texture_symbols.size() > 0) {
    4099. 

  4099. 										mix_error = true;
    4100. 

  4100. 										break;
    4101. 

  4101. 									}
    4102. 

  4102. 									if (!position_symbols.has(c[i])) {
    4103. 

  4103. 										position_symbols.insert(c[i]);
    4104. 

  4104. 									} else {
    4105. 

  4105. 										repeated = true;
    4106. 

  4106. 									}
    4107. 

  4107. 									break;
    4108. 

  4108. 								case 's':
    4109. 

  4109. 								case 't':
    4110. 

  4110. 								case 'p':
    4111. 

  4111. 								case 'q':
    4112. 

  4112. 									if (color_symbols.size() > 0 || position_symbols.size() > 0) {
    4113. 

  4113. 										mix_error = true;
    4114. 

  4114. 										break;
    4115. 

  4115. 									}
    4116. 

  4116. 									if (!texture_symbols.has(c[i])) {
    4117. 

  4117. 										texture_symbols.insert(c[i]);
    4118. 

  4118. 									} else {
    4119. 

  4119. 										repeated = true;
    4120. 

  4120. 									}
    4121. 

  4121. 									break;
    4122. 

  4122. 								default:
    4123. 

  4123. 									ok = false;
    4124. 

  4124. 									break;
    4125. 

  4125. 							}
    4126. 

  4126. 						}
    4127. 

  4127. 

  4128. 					} break;
    4129. 

  4129. 

  4130. 					default: {
    4131. 

  4131. 						ok = false;
    4132. 

  4132. 					}
    4133. 

  4133. 				}
    4134. 

  4134. 

  4135. 				if (mix_error) {
    4136. 

  4136. 					_set_error("Cannot combine symbols from different sets in expression ." + ident);
    4137. 

  4137. 					return nullptr;
    4138. 

  4138. 				}
    4139. 

  4139. 

  4140. 				if (!ok) {
    4141. 

  4141. 					_set_error("Invalid member for " + (dt == TYPE_STRUCT ? st : get_datatype_name(dt)) + " expression: ." + ident);
    4142. 

  4142. 					return nullptr;
    4143. 

  4143. 				}
    4144. 

  4144. 

  4145. 				MemberNode *mn = alloc_node<MemberNode>();
    4146. 

  4146. 				mn->basetype = dt;
    4147. 

  4147. 				mn->basetype_const = is_const;
    4148. 

  4148. 				mn->datatype = member_type;
    4149. 

  4149. 				mn->base_struct_name = st;
    4150. 

  4150. 				mn->struct_name = member_struct_name;
    4151. 

  4151. 				mn->array_size = array_size;
    4152. 

  4152. 				mn->name = ident;
    4153. 

  4153. 				mn->owner = expr;
    4154. 

  4154. 				mn->has_swizzling_duplicates = repeated;
    4155. 

  4155. 

  4156. 				if (array_size > 0) {
    4157. 

  4157. 					tk = _get_token();
    4158. 

  4158. 					if (tk.type == TK_PERIOD) {
    4159. 

  4159. 						_set_error("Nested array length() is not yet implemented");
    4160. 

  4160. 						return nullptr;
    4161. 

  4161. 					} else if (tk.type == TK_BRACKET_OPEN) {
    4162. 

  4162. 						Node *index_expression = _parse_and_reduce_expression(p_block, p_function_info);
    4163. 

  4163. 						if (!index_expression) {
    4164. 

  4164. 							return nullptr;
    4165. 

  4165. 						}
    4166. 

  4166. 

  4167. 						if (index_expression->get_datatype() != TYPE_INT && index_expression->get_datatype() != TYPE_UINT) {
    4168. 

  4168. 							_set_error("Only integer expressions are allowed for indexing");
    4169. 

  4169. 							return nullptr;
    4170. 

  4170. 						}
    4171. 

  4171. 

  4172. 						if (index_expression->type == Node::TYPE_CONSTANT) {
    4173. 

  4173. 							ConstantNode *cnode = (ConstantNode *)index_expression;
    4174. 

  4174. 							if (cnode) {
    4175. 

  4175. 								if (!cnode->values.empty()) {
    4176. 

  4176. 									int value = cnode->values[0].sint;
    4177. 

  4177. 									if (value < 0 || value >= array_size) {
    4178. 

  4178. 										_set_error(vformat("Index [%s] out of range [%s..%s]", value, 0, array_size - 1));
    4179. 

  4179. 										return nullptr;
    4180. 

  4180. 									}
    4181. 

  4181. 								}
    4182. 

  4182. 							}
    4183. 

  4183. 						}
    4184. 

  4184. 

  4185. 						tk = _get_token();
    4186. 

  4186. 						if (tk.type != TK_BRACKET_CLOSE) {
    4187. 

  4187. 							_set_error("Expected ']'");
    4188. 

  4188. 							return nullptr;
    4189. 

  4189. 						}
    4190. 

  4190. 						mn->index_expression = index_expression;
    4191. 

  4191. 

  4192. 					} else {
    4193. 

  4193. 						_set_error("Expected '[' or '.'");
    4194. 

  4194. 						return nullptr;
    4195. 

  4195. 					}
    4196. 

  4196. 				}
    4197. 

  4197. 

  4198. 				expr = mn;
    4199. 

  4199. 

  4200. 				//todo
    4201. 

  4201. 				//member (period) has priority over any operator
    4202. 

  4202. 				//creates a subindexing expression in place
    4203. 

  4203. 

  4204. 				/*} else if (tk.type==TK_BRACKET_OPEN) {
    4205. 

  4205. 				//todo
    4206. 

  4206. 				//subindexing has priority over any operator
    4207. 

  4207. 				//creates a subindexing expression in place
    4208. 

  4208. 

  4209. 	*/
    4210. 

  4210. 			} else if (tk.type == TK_BRACKET_OPEN) {
    4211. 

  4211. 				Node *index = _parse_and_reduce_expression(p_block, p_function_info);
    4212. 

  4212. 				if (!index) {
    4213. 

  4213. 					return nullptr;
    4214. 

  4214. 				}
    4215. 

  4215. 

  4216. 				if (index->get_datatype() != TYPE_INT && index->get_datatype() != TYPE_UINT) {
    4217. 

  4217. 					_set_error("Only integer datatypes are allowed for indexing");
    4218. 

  4218. 					return nullptr;
    4219. 

  4219. 				}
    4220. 

  4220. 

  4221. 				DataType member_type = TYPE_VOID;
    4222. 

  4222. 

  4223. 				switch (expr->get_datatype()) {
    4224. 

  4224. 					case TYPE_BVEC2:
    4225. 

  4225. 					case TYPE_VEC2:
    4226. 

  4226. 					case TYPE_IVEC2:
    4227. 

  4227. 					case TYPE_UVEC2:
    4228. 

  4228. 					case TYPE_MAT2:
    4229. 

  4229. 						if (index->type == Node::TYPE_CONSTANT) {
    4230. 

  4230. 							uint32_t index_constant = static_cast<ConstantNode *>(index)->values[0].uint;
    4231. 

  4231. 							if (index_constant >= 2) {
    4232. 

  4232. 								_set_error("Index out of range (0-1)");
    4233. 

  4233. 								return nullptr;
    4234. 

  4234. 							}
    4235. 

  4235. 						}
    4236. 

  4236. 

  4237. 						switch (expr->get_datatype()) {
    4238. 

  4238. 							case TYPE_BVEC2:
    4239. 

  4239. 								member_type = TYPE_BOOL;
    4240. 

  4240. 								break;
    4241. 

  4241. 							case TYPE_VEC2:
    4242. 

  4242. 								member_type = TYPE_FLOAT;
    4243. 

  4243. 								break;
    4244. 

  4244. 							case TYPE_IVEC2:
    4245. 

  4245. 								member_type = TYPE_INT;
    4246. 

  4246. 								break;
    4247. 

  4247. 							case TYPE_UVEC2:
    4248. 

  4248. 								member_type = TYPE_UINT;
    4249. 

  4249. 								break;
    4250. 

  4250. 							case TYPE_MAT2:
    4251. 

  4251. 								member_type = TYPE_VEC2;
    4252. 

  4252. 								break;
    4253. 

  4253. 							default:
    4254. 

  4254. 								break;
    4255. 

  4255. 						}
    4256. 

  4256. 

  4257. 						break;
    4258. 

  4258. 					case TYPE_BVEC3:
    4259. 

  4259. 					case TYPE_VEC3:
    4260. 

  4260. 					case TYPE_IVEC3:
    4261. 

  4261. 					case TYPE_UVEC3:
    4262. 

  4262. 					case TYPE_MAT3:
    4263. 

  4263. 						if (index->type == Node::TYPE_CONSTANT) {
    4264. 

  4264. 							uint32_t index_constant = static_cast<ConstantNode *>(index)->values[0].uint;
    4265. 

  4265. 							if (index_constant >= 3) {
    4266. 

  4266. 								_set_error("Index out of range (0-2)");
    4267. 

  4267. 								return nullptr;
    4268. 

  4268. 							}
    4269. 

  4269. 						}
    4270. 

  4270. 

  4271. 						switch (expr->get_datatype()) {
    4272. 

  4272. 							case TYPE_BVEC3:
    4273. 

  4273. 								member_type = TYPE_BOOL;
    4274. 

  4274. 								break;
    4275. 

  4275. 							case TYPE_VEC3:
    4276. 

  4276. 								member_type = TYPE_FLOAT;
    4277. 

  4277. 								break;
    4278. 

  4278. 							case TYPE_IVEC3:
    4279. 

  4279. 								member_type = TYPE_INT;
    4280. 

  4280. 								break;
    4281. 

  4281. 							case TYPE_UVEC3:
    4282. 

  4282. 								member_type = TYPE_UINT;
    4283. 

  4283. 								break;
    4284. 

  4284. 							case TYPE_MAT3:
    4285. 

  4285. 								member_type = TYPE_VEC3;
    4286. 

  4286. 								break;
    4287. 

  4287. 							default:
    4288. 

  4288. 								break;
    4289. 

  4289. 						}
    4290. 

  4290. 						break;
    4291. 

  4291. 					case TYPE_BVEC4:
    4292. 

  4292. 					case TYPE_VEC4:
    4293. 

  4293. 					case TYPE_IVEC4:
    4294. 

  4294. 					case TYPE_UVEC4:
    4295. 

  4295. 					case TYPE_MAT4:
    4296. 

  4296. 						if (index->type == Node::TYPE_CONSTANT) {
    4297. 

  4297. 							uint32_t index_constant = static_cast<ConstantNode *>(index)->values[0].uint;
    4298. 

  4298. 							if (index_constant >= 4) {
    4299. 

  4299. 								_set_error("Index out of range (0-3)");
    4300. 

  4300. 								return nullptr;
    4301. 

  4301. 							}
    4302. 

  4302. 						}
    4303. 

  4303. 

  4304. 						switch (expr->get_datatype()) {
    4305. 

  4305. 							case TYPE_BVEC4:
    4306. 

  4306. 								member_type = TYPE_BOOL;
    4307. 

  4307. 								break;
    4308. 

  4308. 							case TYPE_VEC4:
    4309. 

  4309. 								member_type = TYPE_FLOAT;
    4310. 

  4310. 								break;
    4311. 

  4311. 							case TYPE_IVEC4:
    4312. 

  4312. 								member_type = TYPE_INT;
    4313. 

  4313. 								break;
    4314. 

  4314. 							case TYPE_UVEC4:
    4315. 

  4315. 								member_type = TYPE_UINT;
    4316. 

  4316. 								break;
    4317. 

  4317. 							case TYPE_MAT4:
    4318. 

  4318. 								member_type = TYPE_VEC4;
    4319. 

  4319. 								break;
    4320. 

  4320. 							default:
    4321. 

  4321. 								break;
    4322. 

  4322. 						}
    4323. 

  4323. 						break;
    4324. 

  4324. 					default: {
    4325. 

  4325. 						_set_error("Object of type '" + (expr->get_datatype() == TYPE_STRUCT ? expr->get_datatype_name() : get_datatype_name(expr->get_datatype())) + "' can't be indexed");
    4326. 

  4326. 						return nullptr;
    4327. 

  4327. 					}
    4328. 

  4328. 				}
    4329. 

  4329. 

  4330. 				OperatorNode *op = alloc_node<OperatorNode>();
    4331. 

  4331. 				op->op = OP_INDEX;
    4332. 

  4332. 				op->return_cache = member_type;
    4333. 

  4333. 				op->arguments.push_back(expr);
    4334. 

  4334. 				op->arguments.push_back(index);
    4335. 

  4335. 				expr = op;
    4336. 

  4336. 

  4337. 				tk = _get_token();
    4338. 

  4338. 				if (tk.type != TK_BRACKET_CLOSE) {
    4339. 

  4339. 					_set_error("Expected ']' after indexing expression");
    4340. 

  4340. 					return nullptr;
    4341. 

  4341. 				}
    4342. 

  4342. 

  4343. 			} else if (tk.type == TK_OP_INCREMENT || tk.type == TK_OP_DECREMENT) {
    4344. 

  4344. 				OperatorNode *op = alloc_node<OperatorNode>();
    4345. 

  4345. 				op->op = tk.type == TK_OP_DECREMENT ? OP_POST_DECREMENT : OP_POST_INCREMENT;
    4346. 

  4346. 				op->arguments.push_back(expr);
    4347. 

  4347. 

  4348. 				if (!_validate_operator(op, &op->return_cache)) {
    4349. 

  4349. 					_set_error("Invalid base type for increment/decrement operator");
    4350. 

  4350. 					return nullptr;
    4351. 

  4351. 				}
    4352. 

  4352. 

  4353. 				if (!_validate_assign(expr, p_function_info)) {
    4354. 

  4354. 					_set_error("Invalid use of increment/decrement operator in constant expression.");
    4355. 

  4355. 					return nullptr;
    4356. 

  4356. 				}
    4357. 

  4357. 				expr = op;
    4358. 

  4358. 			} else {
    4359. 

  4359. 				_set_tkpos(pos2);
    4360. 

  4360. 				break;
    4361. 

  4361. 			}
    4362. 

  4362. 		}
    4363. 

  4363. 

  4364. 		Expression e;
    4365. 

  4365. 		e.is_op = false;
    4366. 

  4366. 		e.node = expr;
    4367. 

  4367. 		expression.push_back(e);
    4368. 

  4368. 

  4369. 		pos = _get_tkpos();
    4370. 

  4370. 		tk = _get_token();
    4371. 

  4371. 

  4372. 		if (is_token_operator(tk.type)) {
    4373. 

  4373. 			Expression o;
    4374. 

  4374. 			o.is_op = true;
    4375. 

  4375. 

  4376. 			switch (tk.type) {
    4377. 

  4377. 				case TK_OP_EQUAL:
    4378. 

  4378. 					o.op = OP_EQUAL;
    4379. 

  4379. 					break;
    4380. 

  4380. 				case TK_OP_NOT_EQUAL:
    4381. 

  4381. 					o.op = OP_NOT_EQUAL;
    4382. 

  4382. 					break;
    4383. 

  4383. 				case TK_OP_LESS:
    4384. 

  4384. 					o.op = OP_LESS;
    4385. 

  4385. 					break;
    4386. 

  4386. 				case TK_OP_LESS_EQUAL:
    4387. 

  4387. 					o.op = OP_LESS_EQUAL;
    4388. 

  4388. 					break;
    4389. 

  4389. 				case TK_OP_GREATER:
    4390. 

  4390. 					o.op = OP_GREATER;
    4391. 

  4391. 					break;
    4392. 

  4392. 				case TK_OP_GREATER_EQUAL:
    4393. 

  4393. 					o.op = OP_GREATER_EQUAL;
    4394. 

  4394. 					break;
    4395. 

  4395. 				case TK_OP_AND:
    4396. 

  4396. 					o.op = OP_AND;
    4397. 

  4397. 					break;
    4398. 

  4398. 				case TK_OP_OR:
    4399. 

  4399. 					o.op = OP_OR;
    4400. 

  4400. 					break;
    4401. 

  4401. 				case TK_OP_ADD:
    4402. 

  4402. 					o.op = OP_ADD;
    4403. 

  4403. 					break;
    4404. 

  4404. 				case TK_OP_SUB:
    4405. 

  4405. 					o.op = OP_SUB;
    4406. 

  4406. 					break;
    4407. 

  4407. 				case TK_OP_MUL:
    4408. 

  4408. 					o.op = OP_MUL;
    4409. 

  4409. 					break;
    4410. 

  4410. 				case TK_OP_DIV:
    4411. 

  4411. 					o.op = OP_DIV;
    4412. 

  4412. 					break;
    4413. 

  4413. 				case TK_OP_MOD:
    4414. 

  4414. 					o.op = OP_MOD;
    4415. 

  4415. 					break;
    4416. 

  4416. 				case TK_OP_SHIFT_LEFT:
    4417. 

  4417. 					o.op = OP_SHIFT_LEFT;
    4418. 

  4418. 					break;
    4419. 

  4419. 				case TK_OP_SHIFT_RIGHT:
    4420. 

  4420. 					o.op = OP_SHIFT_RIGHT;
    4421. 

  4421. 					break;
    4422. 

  4422. 				case TK_OP_ASSIGN:
    4423. 

  4423. 					o.op = OP_ASSIGN;
    4424. 

  4424. 					break;
    4425. 

  4425. 				case TK_OP_ASSIGN_ADD:
    4426. 

  4426. 					o.op = OP_ASSIGN_ADD;
    4427. 

  4427. 					break;
    4428. 

  4428. 				case TK_OP_ASSIGN_SUB:
    4429. 

  4429. 					o.op = OP_ASSIGN_SUB;
    4430. 

  4430. 					break;
    4431. 

  4431. 				case TK_OP_ASSIGN_MUL:
    4432. 

  4432. 					o.op = OP_ASSIGN_MUL;
    4433. 

  4433. 					break;
    4434. 

  4434. 				case TK_OP_ASSIGN_DIV:
    4435. 

  4435. 					o.op = OP_ASSIGN_DIV;
    4436. 

  4436. 					break;
    4437. 

  4437. 				case TK_OP_ASSIGN_MOD:
    4438. 

  4438. 					o.op = OP_ASSIGN_MOD;
    4439. 

  4439. 					break;
    4440. 

  4440. 				case TK_OP_ASSIGN_SHIFT_LEFT:
    4441. 

  4441. 					o.op = OP_ASSIGN_SHIFT_LEFT;
    4442. 

  4442. 					break;
    4443. 

  4443. 				case TK_OP_ASSIGN_SHIFT_RIGHT:
    4444. 

  4444. 					o.op = OP_ASSIGN_SHIFT_RIGHT;
    4445. 

  4445. 					break;
    4446. 

  4446. 				case TK_OP_ASSIGN_BIT_AND:
    4447. 

  4447. 					o.op = OP_ASSIGN_BIT_AND;
    4448. 

  4448. 					break;
    4449. 

  4449. 				case TK_OP_ASSIGN_BIT_OR:
    4450. 

  4450. 					o.op = OP_ASSIGN_BIT_OR;
    4451. 

  4451. 					break;
    4452. 

  4452. 				case TK_OP_ASSIGN_BIT_XOR:
    4453. 

  4453. 					o.op = OP_ASSIGN_BIT_XOR;
    4454. 

  4454. 					break;
    4455. 

  4455. 				case TK_OP_BIT_AND:
    4456. 

  4456. 					o.op = OP_BIT_AND;
    4457. 

  4457. 					break;
    4458. 

  4458. 				case TK_OP_BIT_OR:
    4459. 

  4459. 					o.op = OP_BIT_OR;
    4460. 

  4460. 					break;
    4461. 

  4461. 				case TK_OP_BIT_XOR:
    4462. 

  4462. 					o.op = OP_BIT_XOR;
    4463. 

  4463. 					break;
    4464. 

  4464. 				case TK_QUESTION:
    4465. 

  4465. 					o.op = OP_SELECT_IF;
    4466. 

  4466. 					break;
    4467. 

  4467. 				case TK_COLON:
    4468. 

  4468. 					o.op = OP_SELECT_ELSE;
    4469. 

  4469. 					break;
    4470. 

  4470. 				default: {
    4471. 

  4471. 					_set_error("Invalid token for operator: " + get_token_text(tk));
    4472. 

  4472. 					return nullptr;
    4473. 

  4473. 				}
    4474. 

  4474. 			}
    4475. 

  4475. 

  4476. 			expression.push_back(o);
    4477. 

  4477. 

  4478. 		} else {
    4479. 

  4479. 			_set_tkpos(pos); //something else, so rollback and end
    4480. 

  4480. 			break;
    4481. 

  4481. 		}
    4482. 

  4482. 	}
    4483. 

  4483. 

  4484. 	/* Reduce the set set of expressions and place them in an operator tree, respecting precedence */
    4485. 

  4485. 

  4486. 	while (expression.size() > 1) {
    4487. 

  4487. 		int next_op = -1;
    4488. 

  4488. 		int min_priority = 0xFFFFF;
    4489. 

  4489. 		bool is_unary = false;
    4490. 

  4490. 		bool is_ternary = false;
    4491. 

  4491. 

  4492. 		for (int i = 0; i < expression.size(); i++) {
    4493. 

  4493. 			if (!expression[i].is_op) {
    4494. 

  4494. 				continue;
    4495. 

  4495. 			}
    4496. 

  4496. 

  4497. 			bool unary = false;
    4498. 

  4498. 			bool ternary = false;
    4499. 

  4499. 

  4500. 			int priority;
    4501. 

  4501. 			switch (expression[i].op) {
    4502. 

  4502. 				case OP_EQUAL:
    4503. 

  4503. 					priority = 8;
    4504. 

  4504. 					break;
    4505. 

  4505. 				case OP_NOT_EQUAL:
    4506. 

  4506. 					priority = 8;
    4507. 

  4507. 					break;
    4508. 

  4508. 				case OP_LESS:
    4509. 

  4509. 					priority = 7;
    4510. 

  4510. 					break;
    4511. 

  4511. 				case OP_LESS_EQUAL:
    4512. 

  4512. 					priority = 7;
    4513. 

  4513. 					break;
    4514. 

  4514. 				case OP_GREATER:
    4515. 

  4515. 					priority = 7;
    4516. 

  4516. 					break;
    4517. 

  4517. 				case OP_GREATER_EQUAL:
    4518. 

  4518. 					priority = 7;
    4519. 

  4519. 					break;
    4520. 

  4520. 				case OP_AND:
    4521. 

  4521. 					priority = 12;
    4522. 

  4522. 					break;
    4523. 

  4523. 				case OP_OR:
    4524. 

  4524. 					priority = 14;
    4525. 

  4525. 					break;
    4526. 

  4526. 				case OP_NOT:
    4527. 

  4527. 					priority = 3;
    4528. 

  4528. 					unary = true;
    4529. 

  4529. 					break;
    4530. 

  4530. 				case OP_NEGATE:
    4531. 

  4531. 					priority = 3;
    4532. 

  4532. 					unary = true;
    4533. 

  4533. 					break;
    4534. 

  4534. 				case OP_ADD:
    4535. 

  4535. 					priority = 5;
    4536. 

  4536. 					break;
    4537. 

  4537. 				case OP_SUB:
    4538. 

  4538. 					priority = 5;
    4539. 

  4539. 					break;
    4540. 

  4540. 				case OP_MUL:
    4541. 

  4541. 					priority = 4;
    4542. 

  4542. 					break;
    4543. 

  4543. 				case OP_DIV:
    4544. 

  4544. 					priority = 4;
    4545. 

  4545. 					break;
    4546. 

  4546. 				case OP_MOD:
    4547. 

  4547. 					priority = 4;
    4548. 

  4548. 					break;
    4549. 

  4549. 				case OP_SHIFT_LEFT:
    4550. 

  4550. 					priority = 6;
    4551. 

  4551. 					break;
    4552. 

  4552. 				case OP_SHIFT_RIGHT:
    4553. 

  4553. 					priority = 6;
    4554. 

  4554. 					break;
    4555. 

  4555. 				case OP_ASSIGN:
    4556. 

  4556. 					priority = 16;
    4557. 

  4557. 					break;
    4558. 

  4558. 				case OP_ASSIGN_ADD:
    4559. 

  4559. 					priority = 16;
    4560. 

  4560. 					break;
    4561. 

  4561. 				case OP_ASSIGN_SUB:
    4562. 

  4562. 					priority = 16;
    4563. 

  4563. 					break;
    4564. 

  4564. 				case OP_ASSIGN_MUL:
    4565. 

  4565. 					priority = 16;
    4566. 

  4566. 					break;
    4567. 

  4567. 				case OP_ASSIGN_DIV:
    4568. 

  4568. 					priority = 16;
    4569. 

  4569. 					break;
    4570. 

  4570. 				case OP_ASSIGN_MOD:
    4571. 

  4571. 					priority = 16;
    4572. 

  4572. 					break;
    4573. 

  4573. 				case OP_ASSIGN_SHIFT_LEFT:
    4574. 

  4574. 					priority = 16;
    4575. 

  4575. 					break;
    4576. 

  4576. 				case OP_ASSIGN_SHIFT_RIGHT:
    4577. 

  4577. 					priority = 16;
    4578. 

  4578. 					break;
    4579. 

  4579. 				case OP_ASSIGN_BIT_AND:
    4580. 

  4580. 					priority = 16;
    4581. 

  4581. 					break;
    4582. 

  4582. 				case OP_ASSIGN_BIT_OR:
    4583. 

  4583. 					priority = 16;
    4584. 

  4584. 					break;
    4585. 

  4585. 				case OP_ASSIGN_BIT_XOR:
    4586. 

  4586. 					priority = 16;
    4587. 

  4587. 					break;
    4588. 

  4588. 				case OP_BIT_AND:
    4589. 

  4589. 					priority = 9;
    4590. 

  4590. 					break;
    4591. 

  4591. 				case OP_BIT_OR:
    4592. 

  4592. 					priority = 11;
    4593. 

  4593. 					break;
    4594. 

  4594. 				case OP_BIT_XOR:
    4595. 

  4595. 					priority = 10;
    4596. 

  4596. 					break;
    4597. 

  4597. 				case OP_BIT_INVERT:
    4598. 

  4598. 					priority = 3;
    4599. 

  4599. 					unary = true;
    4600. 

  4600. 					break;
    4601. 

  4601. 				case OP_INCREMENT:
    4602. 

  4602. 					priority = 3;
    4603. 

  4603. 					unary = true;
    4604. 

  4604. 					break;
    4605. 

  4605. 				case OP_DECREMENT:
    4606. 

  4606. 					priority = 3;
    4607. 

  4607. 					unary = true;
    4608. 

  4608. 					break;
    4609. 

  4609. 				case OP_SELECT_IF:
    4610. 

  4610. 					priority = 15;
    4611. 

  4611. 					ternary = true;
    4612. 

  4612. 					break;
    4613. 

  4613. 				case OP_SELECT_ELSE:
    4614. 

  4614. 					priority = 15;
    4615. 

  4615. 					ternary = true;
    4616. 

  4616. 					break;
    4617. 

  4617. 

  4618. 				default:
    4619. 

  4619. 					ERR_FAIL_V(nullptr); //unexpected operator
    4620. 

  4620. 			}
    4621. 

  4621. 

  4622. 			if (priority < min_priority) {
    4623. 

  4623. 				// < is used for left to right (default)
    4624. 

  4624. 				// <= is used for right to left
    4625. 

  4625. 				next_op = i;
    4626. 

  4626. 				min_priority = priority;
    4627. 

  4627. 				is_unary = unary;
    4628. 

  4628. 				is_ternary = ternary;
    4629. 

  4629. 			}
    4630. 

  4630. 		}
    4631. 

  4631. 

  4632. 		ERR_FAIL_COND_V(next_op == -1, nullptr);
    4633. 

  4633. 

  4634. 		// OK! create operator..
    4635. 

  4635. 		// OK! create operator..
    4636. 

  4636. 		if (is_unary) {
    4637. 

  4637. 			int expr_pos = next_op;
    4638. 

  4638. 			while (expression[expr_pos].is_op) {
    4639. 

  4639. 				expr_pos++;
    4640. 

  4640. 				if (expr_pos == expression.size()) {
    4641. 

  4641. 					//can happen..
    4642. 

  4642. 					_set_error("Unexpected end of expression...");
    4643. 

  4643. 					return nullptr;
    4644. 

  4644. 				}
    4645. 

  4645. 			}
    4646. 

  4646. 

  4647. 			//consecutively do unary operators
    4648. 

  4648. 			for (int i = expr_pos - 1; i >= next_op; i--) {
    4649. 

  4649. 				OperatorNode *op = alloc_node<OperatorNode>();
    4650. 

  4650. 				op->op = expression[i].op;
    4651. 

  4651. 				if ((op->op == OP_INCREMENT || op->op == OP_DECREMENT) && !_validate_assign(expression[i + 1].node, p_function_info)) {
    4652. 

  4652. 					_set_error("Can't use increment/decrement operator in constant expression.");
    4653. 

  4653. 					return nullptr;
    4654. 

  4654. 				}
    4655. 

  4655. 				op->arguments.push_back(expression[i + 1].node);
    4656. 

  4656. 

  4657. 				expression.write[i].is_op = false;
    4658. 

  4658. 				expression.write[i].node = op;
    4659. 

  4659. 

  4660. 				if (!_validate_operator(op, &op->return_cache)) {
    4661. 

  4661. 					String at;
    4662. 

  4662. 					for (int j = 0; j < op->arguments.size(); j++) {
    4663. 

  4663. 						if (j > 0) {
    4664. 

  4664. 							at += " and ";
    4665. 

  4665. 						}
    4666. 

  4666. 						at += get_datatype_name(op->arguments[j]->get_datatype());
    4667. 

  4667. 					}
    4668. 

  4668. 					_set_error("Invalid arguments to unary operator '" + get_operator_text(op->op) + "' :" + at);
    4669. 

  4669. 					return nullptr;
    4670. 

  4670. 				}
    4671. 

  4671. 				expression.remove(i + 1);
    4672. 

  4672. 			}
    4673. 

  4673. 

  4674. 		} else if (is_ternary) {
    4675. 

  4675. 			if (next_op < 1 || next_op >= (expression.size() - 1)) {
    4676. 

  4676. 				_set_error("Parser bug...");
    4677. 

  4677. 				ERR_FAIL_V(nullptr);
    4678. 

  4678. 			}
    4679. 

  4679. 

  4680. 			if (next_op + 2 >= expression.size() || !expression[next_op + 2].is_op || expression[next_op + 2].op != OP_SELECT_ELSE) {
    4681. 

  4681. 				_set_error("Missing matching ':' for select operator");
    4682. 

  4682. 				return nullptr;
    4683. 

  4683. 			}
    4684. 

  4684. 

  4685. 			OperatorNode *op = alloc_node<OperatorNode>();
    4686. 

  4686. 			op->op = expression[next_op].op;
    4687. 

  4687. 			op->arguments.push_back(expression[next_op - 1].node);
    4688. 

  4688. 			op->arguments.push_back(expression[next_op + 1].node);
    4689. 

  4689. 			op->arguments.push_back(expression[next_op + 3].node);
    4690. 

  4690. 

  4691. 			expression.write[next_op - 1].is_op = false;
    4692. 

  4692. 			expression.write[next_op - 1].node = op;
    4693. 

  4693. 			if (!_validate_operator(op, &op->return_cache)) {
    4694. 

  4694. 				String at;
    4695. 

  4695. 				for (int i = 0; i < op->arguments.size(); i++) {
    4696. 

  4696. 					if (i > 0) {
    4697. 

  4697. 						at += " and ";
    4698. 

  4698. 					}
    4699. 

  4699. 					at += get_datatype_name(op->arguments[i]->get_datatype());
    4700. 

  4700. 				}
    4701. 

  4701. 				_set_error("Invalid argument to ternary ?: operator: " + at);
    4702. 

  4702. 				return nullptr;
    4703. 

  4703. 			}
    4704. 

  4704. 

  4705. 			for (int i = 0; i < 4; i++) {
    4706. 

  4706. 				expression.remove(next_op);
    4707. 

  4707. 			}
    4708. 

  4708. 

  4709. 		} else {
    4710. 

  4710. 			if (next_op < 1 || next_op >= (expression.size() - 1)) {
    4711. 

  4711. 				_set_error("Parser bug...");
    4712. 

  4712. 				ERR_FAIL_V(nullptr);
    4713. 

  4713. 			}
    4714. 

  4714. 

  4715. 			OperatorNode *op = alloc_node<OperatorNode>();
    4716. 

  4716. 			op->op = expression[next_op].op;
    4717. 

  4717. 

  4718. 			if (expression[next_op - 1].is_op) {
    4719. 

  4719. 				_set_error("Parser bug...");
    4720. 

  4720. 				ERR_FAIL_V(nullptr);
    4721. 

  4721. 			}
    4722. 

  4722. 

  4723. 			if (_is_operator_assign(op->op)) {
    4724. 

  4724. 				String assign_message;
    4725. 

  4725. 				if (!_validate_assign(expression[next_op - 1].node, p_function_info, &assign_message)) {
    4726. 

  4726. 					_set_error(assign_message);
    4727. 

  4727. 					return nullptr;
    4728. 

  4728. 				}
    4729. 

  4729. 			}
    4730. 

  4730. 

  4731. 			if (expression[next_op + 1].is_op) {
    4732. 

  4732. 				// this is not invalid and can really appear
    4733. 

  4733. 				// but it becomes invalid anyway because no binary op
    4734. 

  4734. 				// can be followed by a unary op in a valid combination,
    4735. 

  4735. 				// due to how precedence works, unaries will always disappear first
    4736. 

  4736. 

  4737. 				_set_error("Parser bug...");
    4738. 

  4738. 			}
    4739. 

  4739. 

  4740. 			op->arguments.push_back(expression[next_op - 1].node); //expression goes as left
    4741. 

  4741. 			op->arguments.push_back(expression[next_op + 1].node); //next expression goes as right
    4742. 

  4742. 			expression.write[next_op - 1].node = op;
    4743. 

  4743. 

  4744. 			//replace all 3 nodes by this operator and make it an expression
    4745. 

  4745. 

  4746. 			if (!_validate_operator(op, &op->return_cache)) {
    4747. 

  4747. 				String at;
    4748. 

  4748. 				for (int i = 0; i < op->arguments.size(); i++) {
    4749. 

  4749. 					if (i > 0) {
    4750. 

  4750. 						at += " and ";
    4751. 

  4751. 					}
    4752. 

  4752. 					if (op->arguments[i]->get_datatype() == TYPE_STRUCT) {
    4753. 

  4753. 						at += op->arguments[i]->get_datatype_name();
    4754. 

  4754. 					} else {
    4755. 

  4755. 						at += get_datatype_name(op->arguments[i]->get_datatype());
    4756. 

  4756. 					}
    4757. 

  4757. 				}
    4758. 

  4758. 				_set_error("Invalid arguments to operator '" + get_operator_text(op->op) + "' :" + at);
    4759. 

  4759. 				return nullptr;
    4760. 

  4760. 			}
    4761. 

  4761. 

  4762. 			expression.remove(next_op);
    4763. 

  4763. 			expression.remove(next_op);
    4764. 

  4764. 		}
    4765. 

  4765. 	}
    4766. 

  4766. 

  4767. 	return expression[0].node;
    4768. 

  4768. }
    4769. 

  4769. 

  4770. ShaderLanguage::Node *ShaderLanguage::_reduce_expression(BlockNode *p_block, ShaderLanguage::Node *p_node) {
    4771. 

  4771. 	if (p_node->type != Node::TYPE_OPERATOR) {
    4772. 

  4772. 		return p_node;
    4773. 

  4773. 	}
    4774. 

  4774. 

  4775. 	//for now only reduce simple constructors
    4776. 

  4776. 	OperatorNode *op = static_cast<OperatorNode *>(p_node);
    4777. 

  4777. 

  4778. 	if (op->op == OP_CONSTRUCT) {
    4779. 

  4779. 		ERR_FAIL_COND_V(op->arguments[0]->type != Node::TYPE_VARIABLE, p_node);
    4780. 

  4780. 

  4781. 		DataType type = op->get_datatype();
    4782. 

  4782. 		DataType base = get_scalar_type(type);
    4783. 

  4783. 		int cardinality = get_cardinality(type);
    4784. 

  4784. 

  4785. 		Vector<ConstantNode::Value> values;
    4786. 

  4786. 

  4787. 		for (int i = 1; i < op->arguments.size(); i++) {
    4788. 

  4788. 			op->arguments.write[i] = _reduce_expression(p_block, op->arguments[i]);
    4789. 

  4789. 			if (op->arguments[i]->type == Node::TYPE_CONSTANT) {
    4790. 

  4790. 				ConstantNode *cn = static_cast<ConstantNode *>(op->arguments[i]);
    4791. 

  4791. 

  4792. 				if (get_scalar_type(cn->datatype) == base) {
    4793. 

  4793. 					for (int j = 0; j < cn->values.size(); j++) {
    4794. 

  4794. 						values.push_back(cn->values[j]);
    4795. 

  4795. 					}
    4796. 

  4796. 				} else if (get_scalar_type(cn->datatype) == cn->datatype) {
    4797. 

  4797. 					ConstantNode::Value v;
    4798. 

  4798. 					if (!convert_constant(cn, base, &v)) {
    4799. 

  4799. 						return p_node;
    4800. 

  4800. 					}
    4801. 

  4801. 					values.push_back(v);
    4802. 

  4802. 				} else {
    4803. 

  4803. 					return p_node;
    4804. 

  4804. 				}
    4805. 

  4805. 

  4806. 			} else {
    4807. 

  4807. 				return p_node;
    4808. 

  4808. 			}
    4809. 

  4809. 		}
    4810. 

  4810. 

  4811. 		if (values.size() == 1) {
    4812. 

  4812. 			if (type >= TYPE_MAT2 && type <= TYPE_MAT4) {
    4813. 

  4813. 				ConstantNode::Value value = values[0];
    4814. 

  4814. 				ConstantNode::Value zero;
    4815. 

  4815. 				zero.real = 0.0f;
    4816. 

  4816. 				int size = 2 + (type - TYPE_MAT2);
    4817. 

  4817. 

  4818. 				values.clear();
    4819. 

  4819. 				for (int i = 0; i < size; i++) {
    4820. 

  4820. 					for (int j = 0; j < size; j++) {
    4821. 

  4821. 						values.push_back(i == j ? value : zero);
    4822. 

  4822. 					}
    4823. 

  4823. 				}
    4824. 

  4824. 			} else {
    4825. 

  4825. 				ConstantNode::Value value = values[0];
    4826. 

  4826. 				for (int i = 1; i < cardinality; i++) {
    4827. 

  4827. 					values.push_back(value);
    4828. 

  4828. 				}
    4829. 

  4829. 			}
    4830. 

  4830. 		} else if (values.size() != cardinality) {
    4831. 

  4831. 			ERR_PRINT("Failed to reduce expression, values and cardinality mismatch.");
    4832. 

  4832. 			return p_node;
    4833. 

  4833. 		}
    4834. 

  4834. 

  4835. 		ConstantNode *cn = alloc_node<ConstantNode>();
    4836. 

  4836. 		cn->datatype = op->get_datatype();
    4837. 

  4837. 		cn->values = values;
    4838. 

  4838. 		return cn;
    4839. 

  4839. 	} else if (op->op == OP_NEGATE) {
    4840. 

  4840. 		op->arguments.write[0] = _reduce_expression(p_block, op->arguments[0]);
    4841. 

  4841. 		if (op->arguments[0]->type == Node::TYPE_CONSTANT) {
    4842. 

  4842. 			ConstantNode *cn = static_cast<ConstantNode *>(op->arguments[0]);
    4843. 

  4843. 

  4844. 			DataType base = get_scalar_type(cn->datatype);
    4845. 

  4845. 

  4846. 			Vector<ConstantNode::Value> values;
    4847. 

  4847. 

  4848. 			for (int i = 0; i < cn->values.size(); i++) {
    4849. 

  4849. 				ConstantNode::Value nv;
    4850. 

  4850. 				switch (base) {
    4851. 

  4851. 					case TYPE_BOOL: {
    4852. 

  4852. 						nv.boolean = !cn->values[i].boolean;
    4853. 

  4853. 					} break;
    4854. 

  4854. 					case TYPE_INT: {
    4855. 

  4855. 						nv.sint = -cn->values[i].sint;
    4856. 

  4856. 					} break;
    4857. 

  4857. 					case TYPE_UINT: {
    4858. 

  4858. 						// Intentionally wrap the unsigned int value, because GLSL does.
    4859. 

  4859. 						nv.uint = 0 - cn->values[i].uint;
    4860. 

  4860. 					} break;
    4861. 

  4861. 					case TYPE_FLOAT: {
    4862. 

  4862. 						nv.real = -cn->values[i].real;
    4863. 

  4863. 					} break;
    4864. 

  4864. 					default: {
    4865. 

  4865. 					}
    4866. 

  4866. 				}
    4867. 

  4867. 

  4868. 				values.push_back(nv);
    4869. 

  4869. 			}
    4870. 

  4870. 

  4871. 			cn->values = values;
    4872. 

  4872. 			return cn;
    4873. 

  4873. 		}
    4874. 

  4874. 	}
    4875. 

  4875. 

  4876. 	return p_node;
    4877. 

  4877. }
    4878. 

  4878. 

  4879. ShaderLanguage::Node *ShaderLanguage::_parse_and_reduce_expression(BlockNode *p_block, const FunctionInfo &p_function_info) {
    4880. 

  4880. 	ShaderLanguage::Node *expr = _parse_expression(p_block, p_function_info);
    4881. 

  4881. 	if (!expr) { //errored
    4882. 

  4882. 		return nullptr;
    4883. 

  4883. 	}
    4884. 

  4884. 

  4885. 	expr = _reduce_expression(p_block, expr);
    4886. 

  4886. 

  4887. 	return expr;
    4888. 

  4888. }
    4889. 

  4889. 

  4890. Error ShaderLanguage::_parse_block(BlockNode *p_block, const FunctionInfo &p_function_info, bool p_just_one, bool p_can_break, bool p_can_continue) {
    4891. 

  4891. 	while (true) {
    4892. 

  4892. 		TkPos pos = _get_tkpos();
    4893. 

  4893. 

  4894. 		Token tk = _get_token();
    4895. 

  4895. 

  4896. 		if (p_block && p_block->block_type == BlockNode::BLOCK_TYPE_SWITCH) {
    4897. 

  4897. 			if (tk.type != TK_CF_CASE && tk.type != TK_CF_DEFAULT && tk.type != TK_CURLY_BRACKET_CLOSE) {
    4898. 

  4898. 				_set_error("Switch may contains only case and default blocks");
    4899. 

  4899. 				return ERR_PARSE_ERROR;
    4900. 

  4900. 			}
    4901. 

  4901. 		}
    4902. 

  4902. 

  4903. 		bool is_struct = shader->structs.has(tk.text);
    4904. 

  4904. 

  4905. 		if (tk.type == TK_CURLY_BRACKET_CLOSE) { //end of block
    4906. 

  4906. 			if (p_just_one) {
    4907. 

  4907. 				_set_error("Unexpected '}'");
    4908. 

  4908. 				return ERR_PARSE_ERROR;
    4909. 

  4909. 			}
    4910. 

  4910. 

  4911. 			return OK;
    4912. 

  4912. 

  4913. 		} else if (tk.type == TK_CONST || is_token_precision(tk.type) || is_token_nonvoid_datatype(tk.type) || is_struct) {
    4914. 

  4914. 			String struct_name = "";
    4915. 

  4915. 			if (is_struct) {
    4916. 

  4916. 				struct_name = tk.text;
    4917. 

  4917. 			}
    4918. 

  4918. 

  4919. 			bool is_const = false;
    4920. 

  4920. 

  4921. 			if (tk.type == TK_CONST) {
    4922. 

  4922. 				is_const = true;
    4923. 

  4923. 				tk = _get_token();
    4924. 

  4924. 

  4925. 				if (!is_struct) {
    4926. 

  4926. 					is_struct = shader->structs.has(tk.text); // check again.
    4927. 

  4927. 					struct_name = tk.text;
    4928. 

  4928. 				}
    4929. 

  4929. 			}
    4930. 

  4930. 

  4931. 			DataPrecision precision = PRECISION_DEFAULT;
    4932. 

  4932. 			if (is_token_precision(tk.type)) {
    4933. 

  4933. 				precision = get_token_precision(tk.type);
    4934. 

  4934. 				tk = _get_token();
    4935. 

  4935. 

  4936. 				if (!is_struct) {
    4937. 

  4937. 					is_struct = shader->structs.has(tk.text); // check again.
    4938. 

  4938. 				}
    4939. 

  4939. 				if (is_struct && precision != PRECISION_DEFAULT) {
    4940. 

  4940. 					_set_error("Precision modifier cannot be used on structs.");
    4941. 

  4941. 					return ERR_PARSE_ERROR;
    4942. 

  4942. 				}
    4943. 

  4943. 				if (!is_token_nonvoid_datatype(tk.type)) {
    4944. 

  4944. 					_set_error("Expected datatype after precision");
    4945. 

  4945. 					return ERR_PARSE_ERROR;
    4946. 

  4946. 				}
    4947. 

  4947. 			}
    4948. 

  4948. 

  4949. 			if (!is_struct) {
    4950. 

  4950. 				if (!is_token_variable_datatype(tk.type)) {
    4951. 

  4951. 					_set_error("Invalid data type for variable (samplers not allowed)");
    4952. 

  4952. 					return ERR_PARSE_ERROR;
    4953. 

  4953. 				}
    4954. 

  4954. 			}
    4955. 

  4955. 

  4956. 			DataType type = is_struct ? TYPE_STRUCT : get_token_datatype(tk.type);
    4957. 

  4957. 

  4958. 			if (_validate_datatype(type) != OK) {
    4959. 

  4959. 				return ERR_PARSE_ERROR;
    4960. 

  4960. 			}
    4961. 

  4961. 

  4962. 			tk = _get_token();
    4963. 

  4963. 

  4964. 			Node *vardecl = nullptr;
    4965. 

  4965. 

  4966. 			while (true) {
    4967. 

  4967. 				if (tk.type != TK_IDENTIFIER) {
    4968. 

  4968. 					_set_error("Expected identifier after type");
    4969. 

  4969. 					return ERR_PARSE_ERROR;
    4970. 

  4970. 				}
    4971. 

  4971. 

  4972. 				StringName name = tk.text;
    4973. 

  4973. 				ShaderLanguage::IdentifierType itype;
    4974. 

  4974. 				if (_find_identifier(p_block, true, p_function_info, name, (ShaderLanguage::DataType *)nullptr, &itype)) {
    4975. 

  4975. 					if (itype != IDENTIFIER_FUNCTION) {
    4976. 

  4976. 						_set_error("Redefinition of '" + String(name) + "'");
    4977. 

  4977. 						return ERR_PARSE_ERROR;
    4978. 

  4978. 					}
    4979. 

  4979. 				}
    4980. 

  4980. 

  4981. 				BlockNode::Variable var;
    4982. 

  4982. 				var.type = type;
    4983. 

  4983. 				var.precision = precision;
    4984. 

  4984. 				var.line = tk_line;
    4985. 

  4985. 				var.array_size = 0;
    4986. 

  4986. 				var.is_const = is_const;
    4987. 

  4987. 				var.struct_name = struct_name;
    4988. 

  4988. 

  4989. 				tk = _get_token();
    4990. 

  4990. 

  4991. 				if (tk.type == TK_BRACKET_OPEN) {
    4992. 

  4992. 					bool unknown_size = false;
    4993. 

  4993. 

  4994. 					if (RenderingServer::get_singleton()->is_low_end() && is_const) {
    4995. 

  4995. 						_set_error("Local const arrays are supported only on high-end platform!");
    4996. 

  4996. 						return ERR_PARSE_ERROR;
    4997. 

  4997. 					}
    4998. 

  4998. 

  4999. 					ArrayDeclarationNode *node = alloc_node<ArrayDeclarationNode>();
    5000. 

  5000. 					if (is_struct) {
    5001. 

  5001. 						node->struct_name = struct_name;
    5002. 

  5002. 						node->datatype = TYPE_STRUCT;
    5003. 

  5003. 					} else {
    5004. 

  5004. 						node->datatype = type;
    5005. 

  5005. 					}
    5006. 

  5006. 					node->precision = precision;
    5007. 

  5007. 					node->is_const = is_const;
    5008. 

  5008. 					vardecl = (Node *)node;
    5009. 

  5009. 

  5010. 					ArrayDeclarationNode::Declaration decl;
    5011. 

  5011. 					decl.name = name;
    5012. 

  5012. 					decl.size = 0U;
    5013. 

  5013. 

  5014. 					tk = _get_token();
    5015. 

  5015. 

  5016. 					if (tk.type == TK_BRACKET_CLOSE) {
    5017. 

  5017. 						unknown_size = true;
    5018. 

  5018. 					} else {
    5019. 

  5019. 						if (tk.type != TK_INT_CONSTANT || ((int)tk.constant) <= 0) {
    5020. 

  5020. 							_set_error("Expected integer constant > 0 or ']'");
    5021. 

  5021. 							return ERR_PARSE_ERROR;
    5022. 

  5022. 						}
    5023. 

  5023. 

  5024. 						decl.size = ((uint32_t)tk.constant);
    5025. 

  5025. 						tk = _get_token();
    5026. 

  5026. 

  5027. 						if (tk.type != TK_BRACKET_CLOSE) {
    5028. 

  5028. 							_set_error("Expected ']'");
    5029. 

  5029. 							return ERR_PARSE_ERROR;
    5030. 

  5030. 						}
    5031. 

  5031. 						var.array_size = decl.size;
    5032. 

  5032. 					}
    5033. 

  5033. 

  5034. 					bool full_def = false;
    5035. 

  5035. 

  5036. 					tk = _get_token();
    5037. 

  5037. 					if (tk.type == TK_OP_ASSIGN) {
    5038. 

  5038. 						if (RenderingServer::get_singleton()->is_low_end()) {
    5039. 

  5039. 							_set_error("Array initialization is supported only on high-end platform!");
    5040. 

  5040. 							return ERR_PARSE_ERROR;
    5041. 

  5041. 						}
    5042. 

  5042. 

  5043. 						tk = _get_token();
    5044. 

  5044. 

  5045. 						if (tk.type != TK_CURLY_BRACKET_OPEN) {
    5046. 

  5046. 							if (unknown_size) {
    5047. 

  5047. 								_set_error("Expected '{'");
    5048. 

  5048. 								return ERR_PARSE_ERROR;
    5049. 

  5049. 							}
    5050. 

  5050. 

  5051. 							full_def = true;
    5052. 

  5052. 

  5053. 							DataPrecision precision2 = PRECISION_DEFAULT;
    5054. 

  5054. 							if (is_token_precision(tk.type)) {
    5055. 

  5055. 								precision2 = get_token_precision(tk.type);
    5056. 

  5056. 								tk = _get_token();
    5057. 

  5057. 								if (shader->structs.has(tk.text)) {
    5058. 

  5058. 									_set_error("Precision modifier cannot be used on structs.");
    5059. 

  5059. 									return ERR_PARSE_ERROR;
    5060. 

  5060. 								}
    5061. 

  5061. 								if (!is_token_nonvoid_datatype(tk.type)) {
    5062. 

  5062. 									_set_error("Expected datatype after precision");
    5063. 

  5063. 									return ERR_PARSE_ERROR;
    5064. 

  5064. 								}
    5065. 

  5065. 							}
    5066. 

  5066. 

  5067. 							DataType type2;
    5068. 

  5068. 							StringName struct_name2 = "";
    5069. 

  5069. 

  5070. 							if (shader->structs.has(tk.text)) {
    5071. 

  5071. 								type2 = TYPE_STRUCT;
    5072. 

  5072. 								struct_name2 = tk.text;
    5073. 

  5073. 							} else {
    5074. 

  5074. 								if (!is_token_variable_datatype(tk.type)) {
    5075. 

  5075. 									_set_error("Invalid data type for array");
    5076. 

  5076. 									return ERR_PARSE_ERROR;
    5077. 

  5077. 								}
    5078. 

  5078. 								type2 = get_token_datatype(tk.type);
    5079. 

  5079. 							}
    5080. 

  5080. 

  5081. 							int array_size2 = 0;
    5082. 

  5082. 

  5083. 							tk = _get_token();
    5084. 

  5084. 							if (tk.type == TK_BRACKET_OPEN) {
    5085. 

  5085. 								TkPos pos2 = _get_tkpos();
    5086. 

  5086. 								tk = _get_token();
    5087. 

  5087. 								if (tk.type == TK_BRACKET_CLOSE) {
    5088. 

  5088. 									array_size2 = var.array_size;
    5089. 

  5089. 									tk = _get_token();
    5090. 

  5090. 								} else {
    5091. 

  5091. 									_set_tkpos(pos2);
    5092. 

  5092. 

  5093. 									Node *n = _parse_and_reduce_expression(p_block, p_function_info);
    5094. 

  5094. 									if (!n || n->type != Node::TYPE_CONSTANT || n->get_datatype() != TYPE_INT) {
    5095. 

  5095. 										_set_error("Expected single integer constant > 0");
    5096. 

  5096. 										return ERR_PARSE_ERROR;
    5097. 

  5097. 									}
    5098. 

  5098. 

  5099. 									ConstantNode *cnode = (ConstantNode *)n;
    5100. 

  5100. 									if (cnode->values.size() == 1) {
    5101. 

  5101. 										array_size2 = cnode->values[0].sint;
    5102. 

  5102. 										if (array_size2 <= 0) {
    5103. 

  5103. 											_set_error("Expected single integer constant > 0");
    5104. 

  5104. 											return ERR_PARSE_ERROR;
    5105. 

  5105. 										}
    5106. 

  5106. 									} else {
    5107. 

  5107. 										_set_error("Expected single integer constant > 0");
    5108. 

  5108. 										return ERR_PARSE_ERROR;
    5109. 

  5109. 									}
    5110. 

  5110. 

  5111. 									tk = _get_token();
    5112. 

  5112. 									if (tk.type != TK_BRACKET_CLOSE) {
    5113. 

  5113. 										_set_error("Expected ']'");
    5114. 

  5114. 										return ERR_PARSE_ERROR;
    5115. 

  5115. 									} else {
    5116. 

  5116. 										tk = _get_token();
    5117. 

  5117. 									}
    5118. 

  5118. 								}
    5119. 

  5119. 							} else {
    5120. 

  5120. 								_set_error("Expected '['");
    5121. 

  5121. 								return ERR_PARSE_ERROR;
    5122. 

  5122. 							}
    5123. 

  5123. 

  5124. 							if (precision != precision2 || type != type2 || struct_name != struct_name2 || var.array_size != array_size2) {
    5125. 

  5125. 								String error_str = "Cannot convert from '";
    5126. 

  5126. 								if (precision2 != PRECISION_DEFAULT) {
    5127. 

  5127. 									error_str += get_precision_name(precision2);
    5128. 

  5128. 									error_str += " ";
    5129. 

  5129. 								}
    5130. 

  5130. 								if (type2 == TYPE_STRUCT) {
    5131. 

  5131. 									error_str += struct_name2;
    5132. 

  5132. 								} else {
    5133. 

  5133. 									error_str += get_datatype_name(type2);
    5134. 

  5134. 								}
    5135. 

  5135. 								error_str += "[";
    5136. 

  5136. 								error_str += itos(array_size2);
    5137. 

  5137. 								error_str += "]'";
    5138. 

  5138. 								error_str += " to '";
    5139. 

  5139. 								if (precision != PRECISION_DEFAULT) {
    5140. 

  5140. 									error_str += get_precision_name(precision);
    5141. 

  5141. 									error_str += " ";
    5142. 

  5142. 								}
    5143. 

  5143. 								if (type == TYPE_STRUCT) {
    5144. 

  5144. 									error_str += struct_name;
    5145. 

  5145. 								} else {
    5146. 

  5146. 									error_str += get_datatype_name(type);
    5147. 

  5147. 								}
    5148. 

  5148. 								error_str += "[";
    5149. 

  5149. 								error_str += itos(var.array_size);
    5150. 

  5150. 								error_str += "]'";
    5151. 

  5151. 								_set_error(error_str);
    5152. 

  5152. 								return ERR_PARSE_ERROR;
    5153. 

  5153. 							}
    5154. 

  5154. 						}
    5155. 

  5155. 

  5156. 						bool curly = tk.type == TK_CURLY_BRACKET_OPEN;
    5157. 

  5157. 

  5158. 						if (unknown_size) {
    5159. 

  5159. 							if (!curly) {
    5160. 

  5160. 								_set_error("Expected '{'");
    5161. 

  5161. 								return ERR_PARSE_ERROR;
    5162. 

  5162. 							}
    5163. 

  5163. 						} else {
    5164. 

  5164. 							if (full_def) {
    5165. 

  5165. 								if (curly) {
    5166. 

  5166. 									_set_error("Expected '('");
    5167. 

  5167. 									return ERR_PARSE_ERROR;
    5168. 

  5168. 								}
    5169. 

  5169. 							}
    5170. 

  5170. 						}
    5171. 

  5171. 

  5172. 						if (tk.type == TK_PARENTHESIS_OPEN || curly) { // initialization
    5173. 

  5173. 							while (true) {
    5174. 

  5174. 								Node *n = _parse_and_reduce_expression(p_block, p_function_info);
    5175. 

  5175. 								if (!n) {
    5176. 

  5176. 									return ERR_PARSE_ERROR;
    5177. 

  5177. 								}
    5178. 

  5178. 

  5179. 								if (node->is_const && n->type == Node::TYPE_OPERATOR && ((OperatorNode *)n)->op == OP_CALL) {
    5180. 

  5180. 									_set_error("Expected constant expression");
    5181. 

  5181. 									return ERR_PARSE_ERROR;
    5182. 

  5182. 								}
    5183. 

  5183. 

  5184. 								if (var.type != n->get_datatype() || struct_name != n->get_datatype_name()) {
    5185. 

  5185. 									_set_error("Invalid assignment of '" + (n->get_datatype() == TYPE_STRUCT ? n->get_datatype_name() : get_datatype_name(n->get_datatype())) + "' to '" + (var.type == TYPE_STRUCT ? struct_name : get_datatype_name(var.type)) + "'");
    5186. 

  5186. 									return ERR_PARSE_ERROR;
    5187. 

  5187. 								}
    5188. 

  5188. 

  5189. 								tk = _get_token();
    5190. 

  5190. 								if (tk.type == TK_COMMA) {
    5191. 

  5191. 									decl.initializer.push_back(n);
    5192. 

  5192. 									continue;
    5193. 

  5193. 								} else if (!curly && tk.type == TK_PARENTHESIS_CLOSE) {
    5194. 

  5194. 									decl.initializer.push_back(n);
    5195. 

  5195. 									break;
    5196. 

  5196. 								} else if (curly && tk.type == TK_CURLY_BRACKET_CLOSE) {
    5197. 

  5197. 									decl.initializer.push_back(n);
    5198. 

  5198. 									break;
    5199. 

  5199. 								} else {
    5200. 

  5200. 									if (curly) {
    5201. 

  5201. 										_set_error("Expected '}' or ','");
    5202. 

  5202. 									} else {
    5203. 

  5203. 										_set_error("Expected ')' or ','");
    5204. 

  5204. 									}
    5205. 

  5205. 									return ERR_PARSE_ERROR;
    5206. 

  5206. 								}
    5207. 

  5207. 							}
    5208. 

  5208. 							if (unknown_size) {
    5209. 

  5209. 								decl.size = decl.initializer.size();
    5210. 

  5210. 								var.array_size = decl.initializer.size();
    5211. 

  5211. 							} else if (decl.initializer.size() != var.array_size) {
    5212. 

  5212. 								_set_error("Array size mismatch");
    5213. 

  5213. 								return ERR_PARSE_ERROR;
    5214. 

  5214. 							}
    5215. 

  5215. 							tk = _get_token();
    5216. 

  5216. 						}
    5217. 

  5217. 					} else {
    5218. 

  5218. 						if (unknown_size) {
    5219. 

  5219. 							_set_error("Expected array initialization");
    5220. 

  5220. 							return ERR_PARSE_ERROR;
    5221. 

  5221. 						}
    5222. 

  5222. 						if (is_const) {
    5223. 

  5223. 							_set_error("Expected initialization of constant");
    5224. 

  5224. 							return ERR_PARSE_ERROR;
    5225. 

  5225. 						}
    5226. 

  5226. 					}
    5227. 

  5227. 

  5228. 					node->declarations.push_back(decl);
    5229. 

  5229. 				} else if (tk.type == TK_OP_ASSIGN) {
    5230. 

  5230. 					VariableDeclarationNode *node = alloc_node<VariableDeclarationNode>();
    5231. 

  5231. 					if (is_struct) {
    5232. 

  5232. 						node->struct_name = struct_name;
    5233. 

  5233. 						node->datatype = TYPE_STRUCT;
    5234. 

  5234. 					} else {
    5235. 

  5235. 						node->datatype = type;
    5236. 

  5236. 					}
    5237. 

  5237. 					node->precision = precision;
    5238. 

  5238. 					node->is_const = is_const;
    5239. 

  5239. 					vardecl = (Node *)node;
    5240. 

  5240. 

  5241. 					VariableDeclarationNode::Declaration decl;
    5242. 

  5242. 					decl.name = name;
    5243. 

  5243. 					decl.initializer = nullptr;
    5244. 

  5244. 

  5245. 					//variable created with assignment! must parse an expression
    5246. 

  5246. 					Node *n = _parse_and_reduce_expression(p_block, p_function_info);
    5247. 

  5247. 					if (!n) {
    5248. 

  5248. 						return ERR_PARSE_ERROR;
    5249. 

  5249. 					}
    5250. 

  5250. 					if (node->is_const && n->type == Node::TYPE_OPERATOR && ((OperatorNode *)n)->op == OP_CALL) {
    5251. 

  5251. 						_set_error("Expected constant expression after '='");
    5252. 

  5252. 						return ERR_PARSE_ERROR;
    5253. 

  5253. 					}
    5254. 

  5254. 					decl.initializer = n;
    5255. 

  5255. 

  5256. 					if (var.type == TYPE_STRUCT ? (var.struct_name != n->get_datatype_name()) : (var.type != n->get_datatype())) {
    5257. 

  5257. 						_set_error("Invalid assignment of '" + (n->get_datatype() == TYPE_STRUCT ? n->get_datatype_name() : get_datatype_name(n->get_datatype())) + "' to '" + (var.type == TYPE_STRUCT ? String(var.struct_name) : get_datatype_name(var.type)) + "'");
    5258. 

  5258. 						return ERR_PARSE_ERROR;
    5259. 

  5259. 					}
    5260. 

  5260. 					tk = _get_token();
    5261. 

  5261. 					node->declarations.push_back(decl);
    5262. 

  5262. 				} else {
    5263. 

  5263. 					if (is_const) {
    5264. 

  5264. 						_set_error("Expected initialization of constant");
    5265. 

  5265. 						return ERR_PARSE_ERROR;
    5266. 

  5266. 					}
    5267. 

  5267. 

  5268. 					VariableDeclarationNode *node = alloc_node<VariableDeclarationNode>();
    5269. 

  5269. 					if (is_struct) {
    5270. 

  5270. 						node->struct_name = struct_name;
    5271. 

  5271. 						node->datatype = TYPE_STRUCT;
    5272. 

  5272. 					} else {
    5273. 

  5273. 						node->datatype = type;
    5274. 

  5274. 					}
    5275. 

  5275. 					node->precision = precision;
    5276. 

  5276. 					vardecl = (Node *)node;
    5277. 

  5277. 

  5278. 					VariableDeclarationNode::Declaration decl;
    5279. 

  5279. 					decl.name = name;
    5280. 

  5280. 					decl.initializer = nullptr;
    5281. 

  5281. 					node->declarations.push_back(decl);
    5282. 

  5282. 				}
    5283. 

  5283. 

  5284. 				p_block->statements.push_back(vardecl);
    5285. 

  5285. 

  5286. 				p_block->variables[name] = var;
    5287. 

  5287. 

  5288. 				if (tk.type == TK_COMMA) {
    5289. 

  5289. 					if (p_block->block_type == BlockNode::BLOCK_TYPE_FOR) {
    5290. 

  5290. 						_set_error("Multiple declarations in 'for' loop are not implemented yet.");
    5291. 

  5291. 						return ERR_PARSE_ERROR;
    5292. 

  5292. 					}
    5293. 

  5293. 					tk = _get_token();
    5294. 

  5294. 					//another variable
    5295. 

  5295. 				} else if (tk.type == TK_SEMICOLON) {
    5296. 

  5296. 					break;
    5297. 

  5297. 				} else {
    5298. 

  5298. 					_set_error("Expected ',' or ';' after variable");
    5299. 

  5299. 					return ERR_PARSE_ERROR;
    5300. 

  5300. 				}
    5301. 

  5301. 			}
    5302. 

  5302. 		} else if (tk.type == TK_CURLY_BRACKET_OPEN) {
    5303. 

  5303. 			//a sub block, just because..
    5304. 

  5304. 			BlockNode *block = alloc_node<BlockNode>();
    5305. 

  5305. 			block->parent_block = p_block;
    5306. 

  5306. 			if (_parse_block(block, p_function_info, false, p_can_break, p_can_continue) != OK) {
    5307. 

  5307. 				return ERR_PARSE_ERROR;
    5308. 

  5308. 			}
    5309. 

  5309. 			p_block->statements.push_back(block);
    5310. 

  5310. 		} else if (tk.type == TK_CF_IF) {
    5311. 

  5311. 			//if () {}
    5312. 

  5312. 			tk = _get_token();
    5313. 

  5313. 			if (tk.type != TK_PARENTHESIS_OPEN) {
    5314. 

  5314. 				_set_error("Expected '(' after if");
    5315. 

  5315. 				return ERR_PARSE_ERROR;
    5316. 

  5316. 			}
    5317. 

  5317. 

  5318. 			ControlFlowNode *cf = alloc_node<ControlFlowNode>();
    5319. 

  5319. 			cf->flow_op = FLOW_OP_IF;
    5320. 

  5320. 			Node *n = _parse_and_reduce_expression(p_block, p_function_info);
    5321. 

  5321. 			if (!n) {
    5322. 

  5322. 				return ERR_PARSE_ERROR;
    5323. 

  5323. 			}
    5324. 

  5324. 

  5325. 			if (n->get_datatype() != TYPE_BOOL) {
    5326. 

  5326. 				_set_error("Expected boolean expression");
    5327. 

  5327. 				return ERR_PARSE_ERROR;
    5328. 

  5328. 			}
    5329. 

  5329. 

  5330. 			tk = _get_token();
    5331. 

  5331. 			if (tk.type != TK_PARENTHESIS_CLOSE) {
    5332. 

  5332. 				_set_error("Expected ')' after expression");
    5333. 

  5333. 				return ERR_PARSE_ERROR;
    5334. 

  5334. 			}
    5335. 

  5335. 

  5336. 			BlockNode *block = alloc_node<BlockNode>();
    5337. 

  5337. 			block->parent_block = p_block;
    5338. 

  5338. 			cf->expressions.push_back(n);
    5339. 

  5339. 			cf->blocks.push_back(block);
    5340. 

  5340. 			p_block->statements.push_back(cf);
    5341. 

  5341. 

  5342. 			Error err = _parse_block(block, p_function_info, true, p_can_break, p_can_continue);
    5343. 

  5343. 			if (err) {
    5344. 

  5344. 				return err;
    5345. 

  5345. 			}
    5346. 

  5346. 

  5347. 			pos = _get_tkpos();
    5348. 

  5348. 			tk = _get_token();
    5349. 

  5349. 			if (tk.type == TK_CF_ELSE) {
    5350. 

  5350. 				block = alloc_node<BlockNode>();
    5351. 

  5351. 				block->parent_block = p_block;
    5352. 

  5352. 				cf->blocks.push_back(block);
    5353. 

  5353. 				err = _parse_block(block, p_function_info, true, p_can_break, p_can_continue);
    5354. 

  5354. 

  5355. 			} else {
    5356. 

  5356. 				_set_tkpos(pos); //rollback
    5357. 

  5357. 			}
    5358. 

  5358. 		} else if (tk.type == TK_CF_SWITCH) {
    5359. 

  5359. 			if (RenderingServer::get_singleton()->is_low_end()) {
    5360. 

  5360. 				_set_error("\"switch\" operator is supported only on high-end platform!");
    5361. 

  5361. 				return ERR_PARSE_ERROR;
    5362. 

  5362. 			}
    5363. 

  5363. 

  5364. 			// switch() {}
    5365. 

  5365. 			tk = _get_token();
    5366. 

  5366. 			if (tk.type != TK_PARENTHESIS_OPEN) {
    5367. 

  5367. 				_set_error("Expected '(' after switch");
    5368. 

  5368. 				return ERR_PARSE_ERROR;
    5369. 

  5369. 			}
    5370. 

  5370. 			ControlFlowNode *cf = alloc_node<ControlFlowNode>();
    5371. 

  5371. 			cf->flow_op = FLOW_OP_SWITCH;
    5372. 

  5372. 			Node *n = _parse_and_reduce_expression(p_block, p_function_info);
    5373. 

  5373. 			if (!n) {
    5374. 

  5374. 				return ERR_PARSE_ERROR;
    5375. 

  5375. 			}
    5376. 

  5376. 			if (n->get_datatype() != TYPE_INT) {
    5377. 

  5377. 				_set_error("Expected integer expression");
    5378. 

  5378. 				return ERR_PARSE_ERROR;
    5379. 

  5379. 			}
    5380. 

  5380. 			tk = _get_token();
    5381. 

  5381. 			if (tk.type != TK_PARENTHESIS_CLOSE) {
    5382. 

  5382. 				_set_error("Expected ')' after expression");
    5383. 

  5383. 				return ERR_PARSE_ERROR;
    5384. 

  5384. 			}
    5385. 

  5385. 			tk = _get_token();
    5386. 

  5386. 			if (tk.type != TK_CURLY_BRACKET_OPEN) {
    5387. 

  5387. 				_set_error("Expected '{' after switch statement");
    5388. 

  5388. 				return ERR_PARSE_ERROR;
    5389. 

  5389. 			}
    5390. 

  5390. 			BlockNode *switch_block = alloc_node<BlockNode>();
    5391. 

  5391. 			switch_block->block_type = BlockNode::BLOCK_TYPE_SWITCH;
    5392. 

  5392. 			switch_block->parent_block = p_block;
    5393. 

  5393. 			cf->expressions.push_back(n);
    5394. 

  5394. 			cf->blocks.push_back(switch_block);
    5395. 

  5395. 			p_block->statements.push_back(cf);
    5396. 

  5396. 

  5397. 			int prev_type = TK_CF_CASE;
    5398. 

  5398. 			while (true) { // Go-through multiple cases.
    5399. 

  5399. 

  5400. 				if (_parse_block(switch_block, p_function_info, true, true, false) != OK) {
    5401. 

  5401. 					return ERR_PARSE_ERROR;
    5402. 

  5402. 				}
    5403. 

  5403. 				pos = _get_tkpos();
    5404. 

  5404. 				tk = _get_token();
    5405. 

  5405. 				if (tk.type == TK_CF_CASE || tk.type == TK_CF_DEFAULT) {
    5406. 

  5406. 					if (prev_type == TK_CF_DEFAULT) {
    5407. 

  5407. 						if (tk.type == TK_CF_CASE) {
    5408. 

  5408. 							_set_error("Cases must be defined before default case.");
    5409. 

  5409. 							return ERR_PARSE_ERROR;
    5410. 

  5410. 						} else if (prev_type == TK_CF_DEFAULT) {
    5411. 

  5411. 							_set_error("Default case must be defined only once.");
    5412. 

  5412. 							return ERR_PARSE_ERROR;
    5413. 

  5413. 						}
    5414. 

  5414. 					}
    5415. 

  5415. 					prev_type = tk.type;
    5416. 

  5416. 					_set_tkpos(pos);
    5417. 

  5417. 					continue;
    5418. 

  5418. 				} else {
    5419. 

  5419. 					Set<int> constants;
    5420. 

  5420. 					for (int i = 0; i < switch_block->statements.size(); i++) { // Checks for duplicates.
    5421. 

  5421. 						ControlFlowNode *flow = (ControlFlowNode *)switch_block->statements[i];
    5422. 

  5422. 						if (flow) {
    5423. 

  5423. 							if (flow->flow_op == FLOW_OP_CASE) {
    5424. 

  5424. 								ConstantNode *n2 = static_cast<ConstantNode *>(flow->expressions[0]);
    5425. 

  5425. 								if (!n2) {
    5426. 

  5426. 									return ERR_PARSE_ERROR;
    5427. 

  5427. 								}
    5428. 

  5428. 								if (n2->values.empty()) {
    5429. 

  5429. 									return ERR_PARSE_ERROR;
    5430. 

  5430. 								}
    5431. 

  5431. 								if (constants.has(n2->values[0].sint)) {
    5432. 

  5432. 									_set_error("Duplicated case label: '" + itos(n2->values[0].sint) + "'");
    5433. 

  5433. 									return ERR_PARSE_ERROR;
    5434. 

  5434. 								}
    5435. 

  5435. 								constants.insert(n2->values[0].sint);
    5436. 

  5436. 							} else if (flow->flow_op == FLOW_OP_DEFAULT) {
    5437. 

  5437. 								continue;
    5438. 

  5438. 							} else {
    5439. 

  5439. 								return ERR_PARSE_ERROR;
    5440. 

  5440. 							}
    5441. 

  5441. 						} else {
    5442. 

  5442. 							return ERR_PARSE_ERROR;
    5443. 

  5443. 						}
    5444. 

  5444. 					}
    5445. 

  5445. 					break;
    5446. 

  5446. 				}
    5447. 

  5447. 			}
    5448. 

  5448. 

  5449. 		} else if (tk.type == TK_CF_CASE) {
    5450. 

  5450. 			// case x : break; | return;
    5451. 

  5451. 

  5452. 			if (p_block && p_block->block_type == BlockNode::BLOCK_TYPE_CASE) {
    5453. 

  5453. 				_set_tkpos(pos);
    5454. 

  5454. 				return OK;
    5455. 

  5455. 			}
    5456. 

  5456. 

  5457. 			if (!p_block || (p_block->block_type != BlockNode::BLOCK_TYPE_SWITCH)) {
    5458. 

  5458. 				_set_error("case must be placed within switch block");
    5459. 

  5459. 				return ERR_PARSE_ERROR;
    5460. 

  5460. 			}
    5461. 

  5461. 

  5462. 			tk = _get_token();
    5463. 

  5463. 

  5464. 			int sign = 1;
    5465. 

  5465. 

  5466. 			if (tk.type == TK_OP_SUB) {
    5467. 

  5467. 				sign = -1;
    5468. 

  5468. 				tk = _get_token();
    5469. 

  5469. 			}
    5470. 

  5470. 

  5471. 			if (tk.type != TK_INT_CONSTANT) {
    5472. 

  5472. 				_set_error("Expected integer constant");
    5473. 

  5473. 				return ERR_PARSE_ERROR;
    5474. 

  5474. 			}
    5475. 

  5475. 

  5476. 			int constant = (int)tk.constant * sign;
    5477. 

  5477. 

  5478. 			tk = _get_token();
    5479. 

  5479. 

  5480. 			if (tk.type != TK_COLON) {
    5481. 

  5481. 				_set_error("Expected ':'");
    5482. 

  5482. 				return ERR_PARSE_ERROR;
    5483. 

  5483. 			}
    5484. 

  5484. 

  5485. 			ControlFlowNode *cf = alloc_node<ControlFlowNode>();
    5486. 

  5486. 			cf->flow_op = FLOW_OP_CASE;
    5487. 

  5487. 

  5488. 			ConstantNode *n = alloc_node<ConstantNode>();
    5489. 

  5489. 			ConstantNode::Value v;
    5490. 

  5490. 			v.sint = constant;
    5491. 

  5491. 			n->values.push_back(v);
    5492. 

  5492. 			n->datatype = TYPE_INT;
    5493. 

  5493. 

  5494. 			BlockNode *case_block = alloc_node<BlockNode>();
    5495. 

  5495. 			case_block->block_type = BlockNode::BLOCK_TYPE_CASE;
    5496. 

  5496. 			case_block->parent_block = p_block;
    5497. 

  5497. 			cf->expressions.push_back(n);
    5498. 

  5498. 			cf->blocks.push_back(case_block);
    5499. 

  5499. 			p_block->statements.push_back(cf);
    5500. 

  5500. 

  5501. 			Error err = _parse_block(case_block, p_function_info, false, true, false);
    5502. 

  5502. 			if (err) {
    5503. 

  5503. 				return err;
    5504. 

  5504. 			}
    5505. 

  5505. 

  5506. 			return OK;
    5507. 

  5507. 

  5508. 		} else if (tk.type == TK_CF_DEFAULT) {
    5509. 

  5509. 			if (p_block && p_block->block_type == BlockNode::BLOCK_TYPE_CASE) {
    5510. 

  5510. 				_set_tkpos(pos);
    5511. 

  5511. 				return OK;
    5512. 

  5512. 			}
    5513. 

  5513. 

  5514. 			if (!p_block || (p_block->block_type != BlockNode::BLOCK_TYPE_SWITCH)) {
    5515. 

  5515. 				_set_error("default must be placed within switch block");
    5516. 

  5516. 				return ERR_PARSE_ERROR;
    5517. 

  5517. 			}
    5518. 

  5518. 

  5519. 			tk = _get_token();
    5520. 

  5520. 

  5521. 			if (tk.type != TK_COLON) {
    5522. 

  5522. 				_set_error("Expected ':'");
    5523. 

  5523. 				return ERR_PARSE_ERROR;
    5524. 

  5524. 			}
    5525. 

  5525. 

  5526. 			ControlFlowNode *cf = alloc_node<ControlFlowNode>();
    5527. 

  5527. 			cf->flow_op = FLOW_OP_DEFAULT;
    5528. 

  5528. 

  5529. 			BlockNode *default_block = alloc_node<BlockNode>();
    5530. 

  5530. 			default_block->block_type = BlockNode::BLOCK_TYPE_DEFAULT;
    5531. 

  5531. 			default_block->parent_block = p_block;
    5532. 

  5532. 			cf->blocks.push_back(default_block);
    5533. 

  5533. 			p_block->statements.push_back(cf);
    5534. 

  5534. 

  5535. 			Error err = _parse_block(default_block, p_function_info, false, true, false);
    5536. 

  5536. 			if (err) {
    5537. 

  5537. 				return err;
    5538. 

  5538. 			}
    5539. 

  5539. 

  5540. 			return OK;
    5541. 

  5541. 

  5542. 		} else if (tk.type == TK_CF_DO || tk.type == TK_CF_WHILE) {
    5543. 

  5543. 			// do {} while()
    5544. 

  5544. 			// while() {}
    5545. 

  5545. 			bool is_do = tk.type == TK_CF_DO;
    5546. 

  5546. 

  5547. 			BlockNode *do_block = nullptr;
    5548. 

  5548. 			if (is_do) {
    5549. 

  5549. 				do_block = alloc_node<BlockNode>();
    5550. 

  5550. 				do_block->parent_block = p_block;
    5551. 

  5551. 

  5552. 				Error err = _parse_block(do_block, p_function_info, true, true, true);
    5553. 

  5553. 				if (err) {
    5554. 

  5554. 					return err;
    5555. 

  5555. 				}
    5556. 

  5556. 

  5557. 				tk = _get_token();
    5558. 

  5558. 				if (tk.type != TK_CF_WHILE) {
    5559. 

  5559. 					_set_error("Expected while after do");
    5560. 

  5560. 					return ERR_PARSE_ERROR;
    5561. 

  5561. 				}
    5562. 

  5562. 			}
    5563. 

  5563. 			tk = _get_token();
    5564. 

  5564. 

  5565. 			if (tk.type != TK_PARENTHESIS_OPEN) {
    5566. 

  5566. 				_set_error("Expected '(' after while");
    5567. 

  5567. 				return ERR_PARSE_ERROR;
    5568. 

  5568. 			}
    5569. 

  5569. 

  5570. 			ControlFlowNode *cf = alloc_node<ControlFlowNode>();
    5571. 

  5571. 			if (is_do) {
    5572. 

  5572. 				cf->flow_op = FLOW_OP_DO;
    5573. 

  5573. 			} else {
    5574. 

  5574. 				cf->flow_op = FLOW_OP_WHILE;
    5575. 

  5575. 			}
    5576. 

  5576. 			Node *n = _parse_and_reduce_expression(p_block, p_function_info);
    5577. 

  5577. 			if (!n) {
    5578. 

  5578. 				return ERR_PARSE_ERROR;
    5579. 

  5579. 			}
    5580. 

  5580. 

  5581. 			tk = _get_token();
    5582. 

  5582. 			if (tk.type != TK_PARENTHESIS_CLOSE) {
    5583. 

  5583. 				_set_error("Expected ')' after expression");
    5584. 

  5584. 				return ERR_PARSE_ERROR;
    5585. 

  5585. 			}
    5586. 

  5586. 			if (!is_do) {
    5587. 

  5587. 				BlockNode *block = alloc_node<BlockNode>();
    5588. 

  5588. 				block->parent_block = p_block;
    5589. 

  5589. 				cf->expressions.push_back(n);
    5590. 

  5590. 				cf->blocks.push_back(block);
    5591. 

  5591. 				p_block->statements.push_back(cf);
    5592. 

  5592. 

  5593. 				Error err = _parse_block(block, p_function_info, true, true, true);
    5594. 

  5594. 				if (err) {
    5595. 

  5595. 					return err;
    5596. 

  5596. 				}
    5597. 

  5597. 			} else {
    5598. 

  5598. 				cf->expressions.push_back(n);
    5599. 

  5599. 				cf->blocks.push_back(do_block);
    5600. 

  5600. 				p_block->statements.push_back(cf);
    5601. 

  5601. 

  5602. 				tk = _get_token();
    5603. 

  5603. 				if (tk.type != TK_SEMICOLON) {
    5604. 

  5604. 					_set_error("Expected ';'");
    5605. 

  5605. 					return ERR_PARSE_ERROR;
    5606. 

  5606. 				}
    5607. 

  5607. 			}
    5608. 

  5608. 		} else if (tk.type == TK_CF_FOR) {
    5609. 

  5609. 			// for() {}
    5610. 

  5610. 			tk = _get_token();
    5611. 

  5611. 			if (tk.type != TK_PARENTHESIS_OPEN) {
    5612. 

  5612. 				_set_error("Expected '(' after for");
    5613. 

  5613. 				return ERR_PARSE_ERROR;
    5614. 

  5614. 			}
    5615. 

  5615. 

  5616. 			ControlFlowNode *cf = alloc_node<ControlFlowNode>();
    5617. 

  5617. 			cf->flow_op = FLOW_OP_FOR;
    5618. 

  5618. 

  5619. 			BlockNode *init_block = alloc_node<BlockNode>();
    5620. 

  5620. 			init_block->block_type = BlockNode::BLOCK_TYPE_FOR;
    5621. 

  5621. 			init_block->parent_block = p_block;
    5622. 

  5622. 			init_block->single_statement = true;
    5623. 

  5623. 			cf->blocks.push_back(init_block);
    5624. 

  5624. 			if (_parse_block(init_block, p_function_info, true, false, false) != OK) {
    5625. 

  5625. 				return ERR_PARSE_ERROR;
    5626. 

  5626. 			}
    5627. 

  5627. 

  5628. 			Node *n = _parse_and_reduce_expression(init_block, p_function_info);
    5629. 

  5629. 			if (!n) {
    5630. 

  5630. 				return ERR_PARSE_ERROR;
    5631. 

  5631. 			}
    5632. 

  5632. 

  5633. 			if (n->get_datatype() != TYPE_BOOL) {
    5634. 

  5634. 				_set_error("Middle expression is expected to be boolean.");
    5635. 

  5635. 				return ERR_PARSE_ERROR;
    5636. 

  5636. 			}
    5637. 

  5637. 

  5638. 			tk = _get_token();
    5639. 

  5639. 			if (tk.type != TK_SEMICOLON) {
    5640. 

  5640. 				_set_error("Expected ';' after middle expression");
    5641. 

  5641. 				return ERR_PARSE_ERROR;
    5642. 

  5642. 			}
    5643. 

  5643. 

  5644. 			cf->expressions.push_back(n);
    5645. 

  5645. 

  5646. 			n = _parse_and_reduce_expression(init_block, p_function_info);
    5647. 

  5647. 			if (!n) {
    5648. 

  5648. 				return ERR_PARSE_ERROR;
    5649. 

  5649. 			}
    5650. 

  5650. 

  5651. 			cf->expressions.push_back(n);
    5652. 

  5652. 

  5653. 			tk = _get_token();
    5654. 

  5654. 			if (tk.type != TK_PARENTHESIS_CLOSE) {
    5655. 

  5655. 				_set_error("Expected ')' after third expression");
    5656. 

  5656. 				return ERR_PARSE_ERROR;
    5657. 

  5657. 			}
    5658. 

  5658. 

  5659. 			BlockNode *block = alloc_node<BlockNode>();
    5660. 

  5660. 			block->parent_block = init_block;
    5661. 

  5661. 			cf->blocks.push_back(block);
    5662. 

  5662. 			p_block->statements.push_back(cf);
    5663. 

  5663. 

  5664. 			Error err = _parse_block(block, p_function_info, true, true, true);
    5665. 

  5665. 			if (err) {
    5666. 

  5666. 				return err;
    5667. 

  5667. 			}
    5668. 

  5668. 

  5669. 		} else if (tk.type == TK_CF_RETURN) {
    5670. 

  5670. 			//check return type
    5671. 

  5671. 			BlockNode *b = p_block;
    5672. 

  5672. 

  5673. 			if (b && b->parent_function && (b->parent_function->name == "vertex" || b->parent_function->name == "fragment" || b->parent_function->name == "light")) {
    5674. 

  5674. 				_set_error(vformat("Using 'return' in '%s' processor function results in undefined behavior!", b->parent_function->name));
    5675. 

  5675. 				return ERR_PARSE_ERROR;
    5676. 

  5676. 			}
    5677. 

  5677. 

  5678. 			while (b && !b->parent_function) {
    5679. 

  5679. 				b = b->parent_block;
    5680. 

  5680. 			}
    5681. 

  5681. 

  5682. 			if (!b) {
    5683. 

  5683. 				_set_error("Bug");
    5684. 

  5684. 				return ERR_BUG;
    5685. 

  5685. 			}
    5686. 

  5686. 

  5687. 			ControlFlowNode *flow = alloc_node<ControlFlowNode>();
    5688. 

  5688. 			flow->flow_op = FLOW_OP_RETURN;
    5689. 

  5689. 

  5690. 			pos = _get_tkpos();
    5691. 

  5691. 			tk = _get_token();
    5692. 

  5692. 			if (tk.type == TK_SEMICOLON) {
    5693. 

  5693. 				//all is good
    5694. 

  5694. 				if (b->parent_function->return_type != TYPE_VOID) {
    5695. 

  5695. 					_set_error("Expected return with expression of type '" + get_datatype_name(b->parent_function->return_type) + "'");
    5696. 

  5696. 					return ERR_PARSE_ERROR;
    5697. 

  5697. 				}
    5698. 

  5698. 			} else {
    5699. 

  5699. 				_set_tkpos(pos); //rollback, wants expression
    5700. 

  5700. 				Node *expr = _parse_and_reduce_expression(p_block, p_function_info);
    5701. 

  5701. 				if (!expr) {
    5702. 

  5702. 					return ERR_PARSE_ERROR;
    5703. 

  5703. 				}
    5704. 

  5704. 

  5705. 				if (b->parent_function->return_type != expr->get_datatype()) {
    5706. 

  5706. 					_set_error("Expected return expression of type '" + get_datatype_name(b->parent_function->return_type) + "'");
    5707. 

  5707. 					return ERR_PARSE_ERROR;
    5708. 

  5708. 				}
    5709. 

  5709. 

  5710. 				tk = _get_token();
    5711. 

  5711. 				if (tk.type != TK_SEMICOLON) {
    5712. 

  5712. 					_set_error("Expected ';' after return expression");
    5713. 

  5713. 					return ERR_PARSE_ERROR;
    5714. 

  5714. 				}
    5715. 

  5715. 

  5716. 				flow->expressions.push_back(expr);
    5717. 

  5717. 			}
    5718. 

  5718. 

  5719. 			p_block->statements.push_back(flow);
    5720. 

  5720. 

  5721. 			BlockNode *block = p_block;
    5722. 

  5722. 			while (block) {
    5723. 

  5723. 				if (block->block_type == BlockNode::BLOCK_TYPE_CASE || block->block_type == BlockNode::BLOCK_TYPE_DEFAULT) {
    5724. 

  5724. 					return OK;
    5725. 

  5725. 				}
    5726. 

  5726. 				block = block->parent_block;
    5727. 

  5727. 			}
    5728. 

  5728. 		} else if (tk.type == TK_CF_DISCARD) {
    5729. 

  5729. 			//check return type
    5730. 

  5730. 			BlockNode *b = p_block;
    5731. 

  5731. 			while (b && !b->parent_function) {
    5732. 

  5732. 				b = b->parent_block;
    5733. 

  5733. 			}
    5734. 

  5734. 			if (!b) {
    5735. 

  5735. 				_set_error("Bug");
    5736. 

  5736. 				return ERR_BUG;
    5737. 

  5737. 			}
    5738. 

  5738. 

  5739. 			if (!b->parent_function->can_discard) {
    5740. 

  5740. 				_set_error("Use of 'discard' is not allowed here.");
    5741. 

  5741. 				return ERR_PARSE_ERROR;
    5742. 

  5742. 			}
    5743. 

  5743. 

  5744. 			ControlFlowNode *flow = alloc_node<ControlFlowNode>();
    5745. 

  5745. 			flow->flow_op = FLOW_OP_DISCARD;
    5746. 

  5746. 

  5747. 			pos = _get_tkpos();
    5748. 

  5748. 			tk = _get_token();
    5749. 

  5749. 			if (tk.type != TK_SEMICOLON) {
    5750. 

  5750. 				//all is good
    5751. 

  5751. 				_set_error("Expected ';' after discard");
    5752. 

  5752. 			}
    5753. 

  5753. 

  5754. 			p_block->statements.push_back(flow);
    5755. 

  5755. 		} else if (tk.type == TK_CF_BREAK) {
    5756. 

  5756. 			if (!p_can_break) {
    5757. 

  5757. 				//all is good
    5758. 

  5758. 				_set_error("Breaking is not allowed here");
    5759. 

  5759. 			}
    5760. 

  5760. 

  5761. 			ControlFlowNode *flow = alloc_node<ControlFlowNode>();
    5762. 

  5762. 			flow->flow_op = FLOW_OP_BREAK;
    5763. 

  5763. 

  5764. 			pos = _get_tkpos();
    5765. 

  5765. 			tk = _get_token();
    5766. 

  5766. 			if (tk.type != TK_SEMICOLON) {
    5767. 

  5767. 				//all is good
    5768. 

  5768. 				_set_error("Expected ';' after break");
    5769. 

  5769. 			}
    5770. 

  5770. 

  5771. 			p_block->statements.push_back(flow);
    5772. 

  5772. 

  5773. 			BlockNode *block = p_block;
    5774. 

  5774. 			while (block) {
    5775. 

  5775. 				if (block->block_type == BlockNode::BLOCK_TYPE_CASE || block->block_type == BlockNode::BLOCK_TYPE_DEFAULT) {
    5776. 

  5776. 					return OK;
    5777. 

  5777. 				}
    5778. 

  5778. 				block = block->parent_block;
    5779. 

  5779. 			}
    5780. 

  5780. 

  5781. 		} else if (tk.type == TK_CF_CONTINUE) {
    5782. 

  5782. 			if (!p_can_continue) {
    5783. 

  5783. 				//all is good
    5784. 

  5784. 				_set_error("Continuing is not allowed here");
    5785. 

  5785. 			}
    5786. 

  5786. 

  5787. 			ControlFlowNode *flow = alloc_node<ControlFlowNode>();
    5788. 

  5788. 			flow->flow_op = FLOW_OP_CONTINUE;
    5789. 

  5789. 

  5790. 			pos = _get_tkpos();
    5791. 

  5791. 			tk = _get_token();
    5792. 

  5792. 			if (tk.type != TK_SEMICOLON) {
    5793. 

  5793. 				//all is good
    5794. 

  5794. 				_set_error("Expected ';' after continue");
    5795. 

  5795. 			}
    5796. 

  5796. 

  5797. 			p_block->statements.push_back(flow);
    5798. 

  5798. 

  5799. 		} else {
    5800. 

  5800. 			//nothing else, so expression
    5801. 

  5801. 			_set_tkpos(pos); //rollback
    5802. 

  5802. 			Node *expr = _parse_and_reduce_expression(p_block, p_function_info);
    5803. 

  5803. 			if (!expr) {
    5804. 

  5804. 				return ERR_PARSE_ERROR;
    5805. 

  5805. 			}
    5806. 

  5806. 			p_block->statements.push_back(expr);
    5807. 

  5807. 			tk = _get_token();
    5808. 

  5808. 

  5809. 			if (tk.type != TK_SEMICOLON) {
    5810. 

  5810. 				_set_error("Expected ';' after statement");
    5811. 

  5811. 				return ERR_PARSE_ERROR;
    5812. 

  5812. 			}
    5813. 

  5813. 		}
    5814. 

  5814. 

  5815. 		if (p_just_one) {
    5816. 

  5816. 			break;
    5817. 

  5817. 		}
    5818. 

  5818. 	}
    5819. 

  5819. 

  5820. 	return OK;
    5821. 

  5821. }
    5822. 

  5822. 

  5823. String ShaderLanguage::_get_shader_type_list(const Set<String> &p_shader_types) const {
    5824. 

  5824. 	// Return a list of shader types as an human-readable string
    5825. 

  5825. 	String valid_types;
    5826. 

  5826. 	for (const Set<String>::Element *E = p_shader_types.front(); E; E = E->next()) {
    5827. 

  5827. 		if (valid_types != String()) {
    5828. 

  5828. 			valid_types += ", ";
    5829. 

  5829. 		}
    5830. 

  5830. 

  5831. 		valid_types += "'" + E->get() + "'";
    5832. 

  5832. 	}
    5833. 

  5833. 

  5834. 	return valid_types;
    5835. 

  5835. }
    5836. 

  5836. 

  5837. String ShaderLanguage::_get_qualifier_str(ArgumentQualifier p_qualifier) const {
    5838. 

  5838. 	switch (p_qualifier) {
    5839. 

  5839. 		case ArgumentQualifier::ARGUMENT_QUALIFIER_IN:
    5840. 

  5840. 			return "in";
    5841. 

  5841. 		case ArgumentQualifier::ARGUMENT_QUALIFIER_OUT:
    5842. 

  5842. 			return "out";
    5843. 

  5843. 		case ArgumentQualifier::ARGUMENT_QUALIFIER_INOUT:
    5844. 

  5844. 			return "inout";
    5845. 

  5845. 	}
    5846. 

  5846. 	return "";
    5847. 

  5847. }
    5848. 

  5848. 

  5849. Error ShaderLanguage::_validate_datatype(DataType p_type) {
    5850. 

  5850. 	if (RenderingServer::get_singleton()->is_low_end()) {
    5851. 

  5851. 		bool invalid_type = false;
    5852. 

  5852. 

  5853. 		switch (p_type) {
    5854. 

  5854. 			case TYPE_UINT:
    5855. 

  5855. 			case TYPE_UVEC2:
    5856. 

  5856. 			case TYPE_UVEC3:
    5857. 

  5857. 			case TYPE_UVEC4:
    5858. 

  5858. 			case TYPE_ISAMPLER2D:
    5859. 

  5859. 			case TYPE_USAMPLER2D:
    5860. 

  5860. 			case TYPE_ISAMPLER3D:
    5861. 

  5861. 			case TYPE_USAMPLER3D:
    5862. 

  5862. 			case TYPE_USAMPLER2DARRAY:
    5863. 

  5863. 			case TYPE_ISAMPLER2DARRAY:
    5864. 

  5864. 				invalid_type = true;
    5865. 

  5865. 				break;
    5866. 

  5866. 			default:
    5867. 

  5867. 				break;
    5868. 

  5868. 		}
    5869. 

  5869. 

  5870. 		if (invalid_type) {
    5871. 

  5871. 			_set_error(vformat("\"%s\" type is supported only on high-end platform!", get_datatype_name(p_type)));
    5872. 

  5872. 			return ERR_UNAVAILABLE;
    5873. 

  5873. 		}
    5874. 

  5874. 	}
    5875. 

  5875. 	return OK;
    5876. 

  5876. }
    5877. 

  5877. 

  5878. Error ShaderLanguage::_parse_shader(const Map<StringName, FunctionInfo> &p_functions, const Vector<StringName> &p_render_modes, const Set<String> &p_shader_types) {
    5879. 

  5879. 	Token tk = _get_token();
    5880. 

  5880. 

  5881. 	if (tk.type != TK_SHADER_TYPE) {
    5882. 

  5882. 		_set_error("Expected 'shader_type' at the beginning of shader. Valid types are: " + _get_shader_type_list(p_shader_types));
    5883. 

  5883. 		return ERR_PARSE_ERROR;
    5884. 

  5884. 	}
    5885. 

  5885. 

  5886. 	tk = _get_token();
    5887. 

  5887. 

  5888. 	if (tk.type != TK_IDENTIFIER) {
    5889. 

  5889. 		_set_error("Expected identifier after 'shader_type', indicating type of shader. Valid types are: " + _get_shader_type_list(p_shader_types));
    5890. 

  5890. 		return ERR_PARSE_ERROR;
    5891. 

  5891. 	}
    5892. 

  5892. 

  5893. 	String shader_type_identifier;
    5894. 

  5894. 

  5895. 	shader_type_identifier = tk.text;
    5896. 

  5896. 

  5897. 	if (!p_shader_types.has(shader_type_identifier)) {
    5898. 

  5898. 		_set_error("Invalid shader type. Valid types are: " + _get_shader_type_list(p_shader_types));
    5899. 

  5899. 		return ERR_PARSE_ERROR;
    5900. 

  5900. 	}
    5901. 

  5901. 

  5902. 	tk = _get_token();
    5903. 

  5903. 

  5904. 	if (tk.type != TK_SEMICOLON) {
    5905. 

  5905. 		_set_error("Expected ';' after 'shader_type <type>'.");
    5906. 

  5906. 	}
    5907. 

  5907. 

  5908. 	tk = _get_token();
    5909. 

  5909. 

  5910. 	int texture_uniforms = 0;
    5911. 

  5911. 	int uniforms = 0;
    5912. 

  5912. 	int instance_index = 0;
    5913. 

  5913. 	ShaderNode::Uniform::Scope uniform_scope = ShaderNode::Uniform::SCOPE_LOCAL;
    5914. 

  5914. 

  5915. 	while (tk.type != TK_EOF) {
    5916. 

  5916. 		switch (tk.type) {
    5917. 

  5917. 			case TK_RENDER_MODE: {
    5918. 

  5918. 				while (true) {
    5919. 

  5919. 					StringName mode;
    5920. 

  5920. 					_get_completable_identifier(nullptr, COMPLETION_RENDER_MODE, mode);
    5921. 

  5921. 

  5922. 					if (mode == StringName()) {
    5923. 

  5923. 						_set_error("Expected identifier for render mode");
    5924. 

  5924. 						return ERR_PARSE_ERROR;
    5925. 

  5925. 					}
    5926. 

  5926. 

  5927. 					if (p_render_modes.find(mode) == -1) {
    5928. 

  5928. 						_set_error("Invalid render mode: '" + String(mode) + "'");
    5929. 

  5929. 						return ERR_PARSE_ERROR;
    5930. 

  5930. 					}
    5931. 

  5931. 

  5932. 					if (shader->render_modes.find(mode) != -1) {
    5933. 

  5933. 						_set_error("Duplicate render mode: '" + String(mode) + "'");
    5934. 

  5934. 						return ERR_PARSE_ERROR;
    5935. 

  5935. 					}
    5936. 

  5936. 

  5937. 					shader->render_modes.push_back(mode);
    5938. 

  5938. 

  5939. 					tk = _get_token();
    5940. 

  5940. 					if (tk.type == TK_COMMA) {
    5941. 

  5941. 						//all good, do nothing
    5942. 

  5942. 					} else if (tk.type == TK_SEMICOLON) {
    5943. 

  5943. 						break; //done
    5944. 

  5944. 					} else {
    5945. 

  5945. 						_set_error("Unexpected token: " + get_token_text(tk));
    5946. 

  5946. 						return ERR_PARSE_ERROR;
    5947. 

  5947. 					}
    5948. 

  5948. 				}
    5949. 

  5949. 			} break;
    5950. 

  5950. 			case TK_STRUCT: {
    5951. 

  5951. 				ShaderNode::Struct st;
    5952. 

  5952. 				DataType type;
    5953. 

  5953. 

  5954. 				tk = _get_token();
    5955. 

  5955. 				if (tk.type == TK_IDENTIFIER) {
    5956. 

  5956. 					st.name = tk.text;
    5957. 

  5957. 					tk = _get_token();
    5958. 

  5958. 					if (tk.type != TK_CURLY_BRACKET_OPEN) {
    5959. 

  5959. 						_set_error("Expected '{'");
    5960. 

  5960. 						return ERR_PARSE_ERROR;
    5961. 

  5961. 					}
    5962. 

  5962. 				} else {
    5963. 

  5963. 					_set_error("Expected struct identifier!");
    5964. 

  5964. 					return ERR_PARSE_ERROR;
    5965. 

  5965. 				}
    5966. 

  5966. 

  5967. 				StructNode *st_node = alloc_node<StructNode>();
    5968. 

  5968. 				st.shader_struct = st_node;
    5969. 

  5969. 

  5970. 				int member_count = 0;
    5971. 

  5971. 				Set<String> member_names;
    5972. 

  5972. 				while (true) { // variables list
    5973. 

  5973. 					tk = _get_token();
    5974. 

  5974. 					if (tk.type == TK_CURLY_BRACKET_CLOSE) {
    5975. 

  5975. 						break;
    5976. 

  5976. 					}
    5977. 

  5977. 					StringName struct_name = "";
    5978. 

  5978. 					bool struct_dt = false;
    5979. 

  5979. 					bool use_precision = false;
    5980. 

  5980. 					DataPrecision precision = DataPrecision::PRECISION_DEFAULT;
    5981. 

  5981. 

  5982. 					if (tk.type == TK_STRUCT) {
    5983. 

  5983. 						_set_error("nested structs are not allowed!");
    5984. 

  5984. 						return ERR_PARSE_ERROR;
    5985. 

  5985. 					}
    5986. 

  5986. 

  5987. 					if (is_token_precision(tk.type)) {
    5988. 

  5988. 						precision = get_token_precision(tk.type);
    5989. 

  5989. 						use_precision = true;
    5990. 

  5990. 						tk = _get_token();
    5991. 

  5991. 					}
    5992. 

  5992. 

  5993. 					if (shader->structs.has(tk.text)) {
    5994. 

  5994. 						struct_name = tk.text;
    5995. 

  5995. 						struct_dt = true;
    5996. 

  5996. 						if (use_precision) {
    5997. 

  5997. 							_set_error("Precision modifier cannot be used on structs.");
    5998. 

  5998. 							return ERR_PARSE_ERROR;
    5999. 

  5999. 						}
    6000. 

  6000. 					}
    6001. 

  6001. 

  6002. 					if (!is_token_datatype(tk.type) && !struct_dt) {
    6003. 

  6003. 						_set_error("Expected datatype.");
    6004. 

  6004. 						return ERR_PARSE_ERROR;
    6005. 

  6005. 					} else {
    6006. 

  6006. 						type = struct_dt ? TYPE_STRUCT : get_token_datatype(tk.type);
    6007. 

  6007. 

  6008. 						if (is_sampler_type(type)) {
    6009. 

  6009. 							_set_error("sampler datatype not allowed here");
    6010. 

  6010. 							return ERR_PARSE_ERROR;
    6011. 

  6011. 						} else if (type == TYPE_VOID) {
    6012. 

  6012. 							_set_error("void datatype not allowed here");
    6013. 

  6013. 							return ERR_PARSE_ERROR;
    6014. 

  6014. 						}
    6015. 

  6015. 

  6016. 						tk = _get_token();
    6017. 

  6017. 						if (tk.type != TK_IDENTIFIER) {
    6018. 

  6018. 							_set_error("Expected identifier!");
    6019. 

  6019. 							return ERR_PARSE_ERROR;
    6020. 

  6020. 						}
    6021. 

  6021. 

  6022. 						MemberNode *member = alloc_node<MemberNode>();
    6023. 

  6023. 						member->precision = precision;
    6024. 

  6024. 						member->datatype = type;
    6025. 

  6025. 						member->struct_name = struct_name;
    6026. 

  6026. 						member->name = tk.text;
    6027. 

  6027. 

  6028. 						if (member_names.has(member->name)) {
    6029. 

  6029. 							_set_error("Redefinition of '" + String(member->name) + "'");
    6030. 

  6030. 							return ERR_PARSE_ERROR;
    6031. 

  6031. 						}
    6032. 

  6032. 						member_names.insert(member->name);
    6033. 

  6033. 

  6034. 						tk = _get_token();
    6035. 

  6035. 						if (tk.type == TK_BRACKET_OPEN) {
    6036. 

  6036. 							tk = _get_token();
    6037. 

  6037. 							if (tk.type == TK_INT_CONSTANT && tk.constant > 0) {
    6038. 

  6038. 								member->array_size = (int)tk.constant;
    6039. 

  6039. 

  6040. 								tk = _get_token();
    6041. 

  6041. 								if (tk.type == TK_BRACKET_CLOSE) {
    6042. 

  6042. 									tk = _get_token();
    6043. 

  6043. 									if (tk.type != TK_SEMICOLON) {
    6044. 

  6044. 										_set_error("Expected ';'");
    6045. 

  6045. 										return ERR_PARSE_ERROR;
    6046. 

  6046. 									}
    6047. 

  6047. 								} else {
    6048. 

  6048. 									_set_error("Expected ']'");
    6049. 

  6049. 									return ERR_PARSE_ERROR;
    6050. 

  6050. 								}
    6051. 

  6051. 							} else {
    6052. 

  6052. 								_set_error("Expected single integer constant > 0");
    6053. 

  6053. 								return ERR_PARSE_ERROR;
    6054. 

  6054. 							}
    6055. 

  6055. 						}
    6056. 

  6056. 						st_node->members.push_back(member);
    6057. 

  6057. 

  6058. 						if (tk.type != TK_SEMICOLON) {
    6059. 

  6059. 							_set_error("Expected ']' or ';'");
    6060. 

  6060. 							return ERR_PARSE_ERROR;
    6061. 

  6061. 						}
    6062. 

  6062. 						member_count++;
    6063. 

  6063. 					}
    6064. 

  6064. 				}
    6065. 

  6065. 				if (member_count == 0) {
    6066. 

  6066. 					_set_error("Empty structs are not allowed!");
    6067. 

  6067. 					return ERR_PARSE_ERROR;
    6068. 

  6068. 				}
    6069. 

  6069. 

  6070. 				tk = _get_token();
    6071. 

  6071. 				if (tk.type != TK_SEMICOLON) {
    6072. 

  6072. 					_set_error("Expected ';'");
    6073. 

  6073. 					return ERR_PARSE_ERROR;
    6074. 

  6074. 				}
    6075. 

  6075. 				shader->structs[st.name] = st;
    6076. 

  6076. 				shader->vstructs.push_back(st); // struct's order is important!
    6077. 

  6077. 

  6078. 			} break;
    6079. 

  6079. 			case TK_GLOBAL: {
    6080. 

  6080. 				tk = _get_token();
    6081. 

  6081. 				if (tk.type != TK_UNIFORM) {
    6082. 

  6082. 					_set_error("Expected 'uniform' after 'global'");
    6083. 

  6083. 					return ERR_PARSE_ERROR;
    6084. 

  6084. 				}
    6085. 

  6085. 				uniform_scope = ShaderNode::Uniform::SCOPE_GLOBAL;
    6086. 

  6086. 			};
    6087. 

  6087. 				[[fallthrough]];
    6088. 

  6088. 			case TK_INSTANCE: {
    6089. 

  6089. 				if (uniform_scope == ShaderNode::Uniform::SCOPE_LOCAL) {
    6090. 

  6090. 					tk = _get_token();
    6091. 

  6091. 					if (tk.type != TK_UNIFORM) {
    6092. 

  6092. 						_set_error("Expected 'uniform' after 'instance'");
    6093. 

  6093. 						return ERR_PARSE_ERROR;
    6094. 

  6094. 					}
    6095. 

  6095. 					uniform_scope = ShaderNode::Uniform::SCOPE_INSTANCE;
    6096. 

  6096. 				}
    6097. 

  6097. 			};
    6098. 

  6098. 				[[fallthrough]];
    6099. 

  6099. 			case TK_UNIFORM:
    6100. 

  6100. 			case TK_VARYING: {
    6101. 

  6101. 				bool uniform = tk.type == TK_UNIFORM;
    6102. 

  6102. 				DataPrecision precision = PRECISION_DEFAULT;
    6103. 

  6103. 				DataInterpolation interpolation = INTERPOLATION_SMOOTH;
    6104. 

  6104. 				DataType type;
    6105. 

  6105. 				StringName name;
    6106. 

  6106. 

  6107. 				tk = _get_token();
    6108. 

  6108. 				if (is_token_interpolation(tk.type)) {
    6109. 

  6109. 					interpolation = get_token_interpolation(tk.type);
    6110. 

  6110. 					tk = _get_token();
    6111. 

  6111. 				}
    6112. 

  6112. 

  6113. 				if (is_token_precision(tk.type)) {
    6114. 

  6114. 					precision = get_token_precision(tk.type);
    6115. 

  6115. 					tk = _get_token();
    6116. 

  6116. 				}
    6117. 

  6117. 

  6118. 				if (!is_token_datatype(tk.type)) {
    6119. 

  6119. 					_set_error("Expected datatype. ");
    6120. 

  6120. 					return ERR_PARSE_ERROR;
    6121. 

  6121. 				}
    6122. 

  6122. 

  6123. 				type = get_token_datatype(tk.type);
    6124. 

  6124. 

  6125. 				if (type == TYPE_VOID) {
    6126. 

  6126. 					_set_error("void datatype not allowed here");
    6127. 

  6127. 					return ERR_PARSE_ERROR;
    6128. 

  6128. 				}
    6129. 

  6129. 

  6130. 				if (!uniform && (type < TYPE_FLOAT || type > TYPE_MAT4)) {
    6131. 

  6131. 					_set_error("Invalid type for varying, only float,vec2,vec3,vec4,mat2,mat3,mat4 or array of these types allowed.");
    6132. 

  6132. 					return ERR_PARSE_ERROR;
    6133. 

  6133. 				}
    6134. 

  6134. 

  6135. 				tk = _get_token();
    6136. 

  6136. 				if (tk.type != TK_IDENTIFIER) {
    6137. 

  6137. 					_set_error("Expected identifier!");
    6138. 

  6138. 					return ERR_PARSE_ERROR;
    6139. 

  6139. 				}
    6140. 

  6140. 

  6141. 				name = tk.text;
    6142. 

  6142. 

  6143. 				if (_find_identifier(nullptr, false, FunctionInfo(), name)) {
    6144. 

  6144. 					_set_error("Redefinition of '" + String(name) + "'");
    6145. 

  6145. 					return ERR_PARSE_ERROR;
    6146. 

  6146. 				}
    6147. 

  6147. 

  6148. 				if (has_builtin(p_functions, name)) {
    6149. 

  6149. 					_set_error("Redefinition of '" + String(name) + "'");
    6150. 

  6150. 					return ERR_PARSE_ERROR;
    6151. 

  6151. 				}
    6152. 

  6152. 

  6153. 				if (uniform) {
    6154. 

  6154. 					if (uniform_scope == ShaderNode::Uniform::SCOPE_GLOBAL) {
    6155. 

  6155. 						//validate global uniform
    6156. 

  6156. 						DataType gvtype = global_var_get_type_func(name);
    6157. 

  6157. 						if (gvtype == TYPE_MAX) {
    6158. 

  6158. 							_set_error("Global uniform '" + String(name) + "' does not exist. Create it in Project Settings.");
    6159. 

  6159. 							return ERR_PARSE_ERROR;
    6160. 

  6160. 						}
    6161. 

  6161. 

  6162. 						if (type != gvtype) {
    6163. 

  6163. 							_set_error("Global uniform '" + String(name) + "' must be of type '" + get_datatype_name(gvtype) + "'.");
    6164. 

  6164. 							return ERR_PARSE_ERROR;
    6165. 

  6165. 						}
    6166. 

  6166. 					}
    6167. 

  6167. 					ShaderNode::Uniform uniform2;
    6168. 

  6168. 

  6169. 					if (is_sampler_type(type)) {
    6170. 

  6170. 						if (uniform_scope == ShaderNode::Uniform::SCOPE_INSTANCE) {
    6171. 

  6171. 							_set_error("Uniforms with 'instance' qualifiers can't be of sampler type.");
    6172. 

  6172. 							return ERR_PARSE_ERROR;
    6173. 

  6173. 						}
    6174. 

  6174. 						uniform2.texture_order = texture_uniforms++;
    6175. 

  6175. 						uniform2.order = -1;
    6176. 

  6176. 						if (_validate_datatype(type) != OK) {
    6177. 

  6177. 							return ERR_PARSE_ERROR;
    6178. 

  6178. 						}
    6179. 

  6179. 					} else {
    6180. 

  6180. 						if (uniform_scope == ShaderNode::Uniform::SCOPE_INSTANCE && (type == TYPE_MAT2 || type == TYPE_MAT3 || type == TYPE_MAT4)) {
    6181. 

  6181. 							_set_error("Uniforms with 'instance' qualifiers can't be of matrix type.");
    6182. 

  6182. 							return ERR_PARSE_ERROR;
    6183. 

  6183. 						}
    6184. 

  6184. 

  6185. 						uniform2.texture_order = -1;
    6186. 

  6186. 						uniform2.order = uniforms++;
    6187. 

  6187. 					}
    6188. 

  6188. 					uniform2.type = type;
    6189. 

  6189. 					uniform2.scope = uniform_scope;
    6190. 

  6190. 					uniform2.precision = precision;
    6191. 

  6191. 

  6192. 					//todo parse default value
    6193. 

  6193. 

  6194. 					tk = _get_token();
    6195. 

  6195. 

  6196. 					int custom_instance_index = -1;
    6197. 

  6197. 

  6198. 					if (tk.type == TK_COLON) {
    6199. 

  6199. 						//hint
    6200. 

  6200. 						do {
    6201. 

  6201. 							tk = _get_token();
    6202. 

  6202. 							if (tk.type == TK_HINT_WHITE_TEXTURE) {
    6203. 

  6203. 								uniform2.hint = ShaderNode::Uniform::HINT_WHITE;
    6204. 

  6204. 							} else if (tk.type == TK_HINT_BLACK_TEXTURE) {
    6205. 

  6205. 								uniform2.hint = ShaderNode::Uniform::HINT_BLACK;
    6206. 

  6206. 							} else if (tk.type == TK_HINT_NORMAL_TEXTURE) {
    6207. 

  6207. 								uniform2.hint = ShaderNode::Uniform::HINT_NORMAL;
    6208. 

  6208. 							} else if (tk.type == TK_HINT_ROUGHNESS_NORMAL_TEXTURE) {
    6209. 

  6209. 								uniform2.hint = ShaderNode::Uniform::HINT_ROUGHNESS_NORMAL;
    6210. 

  6210. 							} else if (tk.type == TK_HINT_ROUGHNESS_R) {
    6211. 

  6211. 								uniform2.hint = ShaderNode::Uniform::HINT_ROUGHNESS_R;
    6212. 

  6212. 							} else if (tk.type == TK_HINT_ROUGHNESS_G) {
    6213. 

  6213. 								uniform2.hint = ShaderNode::Uniform::HINT_ROUGHNESS_G;
    6214. 

  6214. 							} else if (tk.type == TK_HINT_ROUGHNESS_B) {
    6215. 

  6215. 								uniform2.hint = ShaderNode::Uniform::HINT_ROUGHNESS_B;
    6216. 

  6216. 							} else if (tk.type == TK_HINT_ROUGHNESS_A) {
    6217. 

  6217. 								uniform2.hint = ShaderNode::Uniform::HINT_ROUGHNESS_A;
    6218. 

  6218. 							} else if (tk.type == TK_HINT_ROUGHNESS_GRAY) {
    6219. 

  6219. 								uniform2.hint = ShaderNode::Uniform::HINT_ROUGHNESS_GRAY;
    6220. 

  6220. 							} else if (tk.type == TK_HINT_ANISO_TEXTURE) {
    6221. 

  6221. 								uniform2.hint = ShaderNode::Uniform::HINT_ANISO;
    6222. 

  6222. 							} else if (tk.type == TK_HINT_ALBEDO_TEXTURE) {
    6223. 

  6223. 								uniform2.hint = ShaderNode::Uniform::HINT_ALBEDO;
    6224. 

  6224. 							} else if (tk.type == TK_HINT_BLACK_ALBEDO_TEXTURE) {
    6225. 

  6225. 								uniform2.hint = ShaderNode::Uniform::HINT_BLACK_ALBEDO;
    6226. 

  6226. 							} else if (tk.type == TK_HINT_COLOR) {
    6227. 

  6227. 								if (type != TYPE_VEC4) {
    6228. 

  6228. 									_set_error("Color hint is for vec4 only");
    6229. 

  6229. 									return ERR_PARSE_ERROR;
    6230. 

  6230. 								}
    6231. 

  6231. 								uniform2.hint = ShaderNode::Uniform::HINT_COLOR;
    6232. 

  6232. 							} else if (tk.type == TK_HINT_RANGE) {
    6233. 

  6233. 								uniform2.hint = ShaderNode::Uniform::HINT_RANGE;
    6234. 

  6234. 								if (type != TYPE_FLOAT && type != TYPE_INT) {
    6235. 

  6235. 									_set_error("Range hint is for float and int only");
    6236. 

  6236. 									return ERR_PARSE_ERROR;
    6237. 

  6237. 								}
    6238. 

  6238. 

  6239. 								tk = _get_token();
    6240. 

  6240. 								if (tk.type != TK_PARENTHESIS_OPEN) {
    6241. 

  6241. 									_set_error("Expected '(' after hint_range");
    6242. 

  6242. 									return ERR_PARSE_ERROR;
    6243. 

  6243. 								}
    6244. 

  6244. 

  6245. 								tk = _get_token();
    6246. 

  6246. 

  6247. 								float sign = 1.0;
    6248. 

  6248. 

  6249. 								if (tk.type == TK_OP_SUB) {
    6250. 

  6250. 									sign = -1.0;
    6251. 

  6251. 									tk = _get_token();
    6252. 

  6252. 								}
    6253. 

  6253. 

  6254. 								if (tk.type != TK_REAL_CONSTANT && tk.type != TK_INT_CONSTANT) {
    6255. 

  6255. 									_set_error("Expected integer constant");
    6256. 

  6256. 									return ERR_PARSE_ERROR;
    6257. 

  6257. 								}
    6258. 

  6258. 

  6259. 								uniform2.hint_range[0] = tk.constant;
    6260. 

  6260. 								uniform2.hint_range[0] *= sign;
    6261. 

  6261. 

  6262. 								tk = _get_token();
    6263. 

  6263. 

  6264. 								if (tk.type != TK_COMMA) {
    6265. 

  6265. 									_set_error("Expected ',' after integer constant");
    6266. 

  6266. 									return ERR_PARSE_ERROR;
    6267. 

  6267. 								}
    6268. 

  6268. 

  6269. 								tk = _get_token();
    6270. 

  6270. 

  6271. 								sign = 1.0;
    6272. 

  6272. 

  6273. 								if (tk.type == TK_OP_SUB) {
    6274. 

  6274. 									sign = -1.0;
    6275. 

  6275. 									tk = _get_token();
    6276. 

  6276. 								}
    6277. 

  6277. 

  6278. 								if (tk.type != TK_REAL_CONSTANT && tk.type != TK_INT_CONSTANT) {
    6279. 

  6279. 									_set_error("Expected integer constant after ','");
    6280. 

  6280. 									return ERR_PARSE_ERROR;
    6281. 

  6281. 								}
    6282. 

  6282. 

  6283. 								uniform2.hint_range[1] = tk.constant;
    6284. 

  6284. 								uniform2.hint_range[1] *= sign;
    6285. 

  6285. 

  6286. 								tk = _get_token();
    6287. 

  6287. 

  6288. 								if (tk.type == TK_COMMA) {
    6289. 

  6289. 									tk = _get_token();
    6290. 

  6290. 

  6291. 									if (tk.type != TK_REAL_CONSTANT && tk.type != TK_INT_CONSTANT) {
    6292. 

  6292. 										_set_error("Expected integer constant after ','");
    6293. 

  6293. 										return ERR_PARSE_ERROR;
    6294. 

  6294. 									}
    6295. 

  6295. 

  6296. 									uniform2.hint_range[2] = tk.constant;
    6297. 

  6297. 									tk = _get_token();
    6298. 

  6298. 								} else {
    6299. 

  6299. 									if (type == TYPE_INT) {
    6300. 

  6300. 										uniform2.hint_range[2] = 1;
    6301. 

  6301. 									} else {
    6302. 

  6302. 										uniform2.hint_range[2] = 0.001;
    6303. 

  6303. 									}
    6304. 

  6304. 								}
    6305. 

  6305. 

  6306. 								if (tk.type != TK_PARENTHESIS_CLOSE) {
    6307. 

  6307. 									_set_error("Expected ')'");
    6308. 

  6308. 									return ERR_PARSE_ERROR;
    6309. 

  6309. 								}
    6310. 

  6310. 							} else if (tk.type == TK_HINT_INSTANCE_INDEX) {
    6311. 

  6311. 								if (custom_instance_index != -1) {
    6312. 

  6312. 									_set_error("Can only specify 'instance_index' once.");
    6313. 

  6313. 									return ERR_PARSE_ERROR;
    6314. 

  6314. 								}
    6315. 

  6315. 

  6316. 								tk = _get_token();
    6317. 

  6317. 								if (tk.type != TK_PARENTHESIS_OPEN) {
    6318. 

  6318. 									_set_error("Expected '(' after 'instance_index'");
    6319. 

  6319. 									return ERR_PARSE_ERROR;
    6320. 

  6320. 								}
    6321. 

  6321. 

  6322. 								tk = _get_token();
    6323. 

  6323. 

  6324. 								if (tk.type == TK_OP_SUB) {
    6325. 

  6325. 									_set_error("The instance index can't be negative.");
    6326. 

  6326. 									return ERR_PARSE_ERROR;
    6327. 

  6327. 								}
    6328. 

  6328. 

  6329. 								if (tk.type != TK_INT_CONSTANT) {
    6330. 

  6330. 									_set_error("Expected integer constant");
    6331. 

  6331. 									return ERR_PARSE_ERROR;
    6332. 

  6332. 								}
    6333. 

  6333. 

  6334. 								custom_instance_index = tk.constant;
    6335. 

  6335. 

  6336. 								if (custom_instance_index >= MAX_INSTANCE_UNIFORM_INDICES) {
    6337. 

  6337. 									_set_error("Allowed instance uniform indices are 0-" + itos(MAX_INSTANCE_UNIFORM_INDICES - 1));
    6338. 

  6338. 									return ERR_PARSE_ERROR;
    6339. 

  6339. 								}
    6340. 

  6340. 

  6341. 								tk = _get_token();
    6342. 

  6342. 

  6343. 								if (tk.type != TK_PARENTHESIS_CLOSE) {
    6344. 

  6344. 									_set_error("Expected ')'");
    6345. 

  6345. 									return ERR_PARSE_ERROR;
    6346. 

  6346. 								}
    6347. 

  6347. 							} else if (tk.type == TK_FILTER_LINEAR) {
    6348. 

  6348. 								uniform2.filter = FILTER_LINEAR;
    6349. 

  6349. 							} else if (tk.type == TK_FILTER_NEAREST) {
    6350. 

  6350. 								uniform2.filter = FILTER_NEAREST;
    6351. 

  6351. 							} else if (tk.type == TK_FILTER_NEAREST_MIPMAP) {
    6352. 

  6352. 								uniform2.filter = FILTER_NEAREST_MIPMAP;
    6353. 

  6353. 							} else if (tk.type == TK_FILTER_LINEAR_MIPMAP) {
    6354. 

  6354. 								uniform2.filter = FILTER_LINEAR_MIPMAP;
    6355. 

  6355. 							} else if (tk.type == TK_FILTER_NEAREST_MIPMAP_ANISO) {
    6356. 

  6356. 								uniform2.filter = FILTER_NEAREST_MIPMAP_ANISO;
    6357. 

  6357. 							} else if (tk.type == TK_FILTER_LINEAR_MIPMAP_ANISO) {
    6358. 

  6358. 								uniform2.filter = FILTER_LINEAR_MIPMAP_ANISO;
    6359. 

  6359. 							} else if (tk.type == TK_REPEAT_DISABLE) {
    6360. 

  6360. 								uniform2.repeat = REPEAT_DISABLE;
    6361. 

  6361. 							} else if (tk.type == TK_REPEAT_ENABLE) {
    6362. 

  6362. 								uniform2.repeat = REPEAT_ENABLE;
    6363. 

  6363. 							} else {
    6364. 

  6364. 								_set_error("Expected valid type hint after ':'.");
    6365. 

  6365. 							}
    6366. 

  6366. 

  6367. 							if (uniform2.hint != ShaderNode::Uniform::HINT_RANGE && uniform2.hint != ShaderNode::Uniform::HINT_NONE && uniform2.hint != ShaderNode::Uniform::HINT_COLOR && type <= TYPE_MAT4) {
    6368. 

  6368. 								_set_error("This hint is only for sampler types");
    6369. 

  6369. 								return ERR_PARSE_ERROR;
    6370. 

  6370. 							}
    6371. 

  6371. 

  6372. 							tk = _get_token();
    6373. 

  6373. 

  6374. 						} while (tk.type == TK_COMMA);
    6375. 

  6375. 					}
    6376. 

  6376. 

  6377. 					if (uniform_scope == ShaderNode::Uniform::SCOPE_INSTANCE) {
    6378. 

  6378. 						if (custom_instance_index >= 0) {
    6379. 

  6379. 							uniform2.instance_index = custom_instance_index;
    6380. 

  6380. 						} else {
    6381. 

  6381. 							uniform2.instance_index = instance_index++;
    6382. 

  6382. 							if (instance_index > MAX_INSTANCE_UNIFORM_INDICES) {
    6383. 

  6383. 								_set_error("Too many 'instance' uniforms in shader, maximum supported is " + itos(MAX_INSTANCE_UNIFORM_INDICES));
    6384. 

  6384. 								return ERR_PARSE_ERROR;
    6385. 

  6385. 							}
    6386. 

  6386. 						}
    6387. 

  6387. 					}
    6388. 

  6388. 

  6389. 					//reset scope for next uniform
    6390. 

  6390. 

  6391. 					if (tk.type == TK_OP_ASSIGN) {
    6392. 

  6392. 						Node *expr = _parse_and_reduce_expression(nullptr, FunctionInfo());
    6393. 

  6393. 						if (!expr) {
    6394. 

  6394. 							return ERR_PARSE_ERROR;
    6395. 

  6395. 						}
    6396. 

  6396. 						if (expr->type != Node::TYPE_CONSTANT) {
    6397. 

  6397. 							_set_error("Expected constant expression after '='");
    6398. 

  6398. 							return ERR_PARSE_ERROR;
    6399. 

  6399. 						}
    6400. 

  6400. 

  6401. 						ConstantNode *cn = static_cast<ConstantNode *>(expr);
    6402. 

  6402. 

  6403. 						uniform2.default_value.resize(cn->values.size());
    6404. 

  6404. 

  6405. 						if (!convert_constant(cn, uniform2.type, uniform2.default_value.ptrw())) {
    6406. 

  6406. 							_set_error("Can't convert constant to " + get_datatype_name(uniform2.type));
    6407. 

  6407. 							return ERR_PARSE_ERROR;
    6408. 

  6408. 						}
    6409. 

  6409. 						tk = _get_token();
    6410. 

  6410. 					}
    6411. 

  6411. 

  6412. 					shader->uniforms[name] = uniform2;
    6413. 

  6413. 					//reset scope for next uniform
    6414. 

  6414. 					uniform_scope = ShaderNode::Uniform::SCOPE_LOCAL;
    6415. 

  6415. 

  6416. 					if (tk.type != TK_SEMICOLON) {
    6417. 

  6417. 						_set_error("Expected ';'");
    6418. 

  6418. 						return ERR_PARSE_ERROR;
    6419. 

  6419. 					}
    6420. 

  6420. 				} else {
    6421. 

  6421. 					ShaderNode::Varying varying;
    6422. 

  6422. 					varying.type = type;
    6423. 

  6423. 					varying.precision = precision;
    6424. 

  6424. 					varying.interpolation = interpolation;
    6425. 

  6425. 

  6426. 					tk = _get_token();
    6427. 

  6427. 					if (tk.type != TK_SEMICOLON && tk.type != TK_BRACKET_OPEN) {
    6428. 

  6428. 						_set_error("Expected ';' or '['");
    6429. 

  6429. 						return ERR_PARSE_ERROR;
    6430. 

  6430. 					}
    6431. 

  6431. 

  6432. 					if (tk.type == TK_BRACKET_OPEN) {
    6433. 

  6433. 						tk = _get_token();
    6434. 

  6434. 						if (tk.type == TK_INT_CONSTANT && tk.constant > 0) {
    6435. 

  6435. 							varying.array_size = (int)tk.constant;
    6436. 

  6436. 

  6437. 							tk = _get_token();
    6438. 

  6438. 							if (tk.type == TK_BRACKET_CLOSE) {
    6439. 

  6439. 								tk = _get_token();
    6440. 

  6440. 								if (tk.type != TK_SEMICOLON) {
    6441. 

  6441. 									_set_error("Expected ';'");
    6442. 

  6442. 									return ERR_PARSE_ERROR;
    6443. 

  6443. 								}
    6444. 

  6444. 							} else {
    6445. 

  6445. 								_set_error("Expected ']'");
    6446. 

  6446. 								return ERR_PARSE_ERROR;
    6447. 

  6447. 							}
    6448. 

  6448. 						} else {
    6449. 

  6449. 							_set_error("Expected single integer constant > 0");
    6450. 

  6450. 							return ERR_PARSE_ERROR;
    6451. 

  6451. 						}
    6452. 

  6452. 					}
    6453. 

  6453. 

  6454. 					shader->varyings[name] = varying;
    6455. 

  6455. 				}
    6456. 

  6456. 

  6457. 			} break;
    6458. 

  6458. 			default: {
    6459. 

  6459. 				//function or constant variable
    6460. 

  6460. 

  6461. 				bool is_constant = false;
    6462. 

  6462. 				bool is_struct = false;
    6463. 

  6463. 				StringName struct_name;
    6464. 

  6464. 				DataPrecision precision = PRECISION_DEFAULT;
    6465. 

  6465. 				DataType type;
    6466. 

  6466. 				StringName name;
    6467. 

  6467. 

  6468. 				if (tk.type == TK_CONST) {
    6469. 

  6469. 					is_constant = true;
    6470. 

  6470. 					tk = _get_token();
    6471. 

  6471. 				}
    6472. 

  6472. 

  6473. 				if (is_token_precision(tk.type)) {
    6474. 

  6474. 					precision = get_token_precision(tk.type);
    6475. 

  6475. 					tk = _get_token();
    6476. 

  6476. 				}
    6477. 

  6477. 

  6478. 				if (shader->structs.has(tk.text)) {
    6479. 

  6479. 					if (precision != PRECISION_DEFAULT) {
    6480. 

  6480. 						_set_error("Precision modifier cannot be used on structs.");
    6481. 

  6481. 						return ERR_PARSE_ERROR;
    6482. 

  6482. 					}
    6483. 

  6483. 					is_struct = true;
    6484. 

  6484. 					struct_name = tk.text;
    6485. 

  6485. 				} else {
    6486. 

  6486. 					if (!is_token_datatype(tk.type)) {
    6487. 

  6487. 						_set_error("Expected constant, function, uniform or varying");
    6488. 

  6488. 						return ERR_PARSE_ERROR;
    6489. 

  6489. 					}
    6490. 

  6490. 

  6491. 					if (!is_token_variable_datatype(tk.type)) {
    6492. 

  6492. 						_set_error("Invalid data type for constants or function return (samplers not allowed)");
    6493. 

  6493. 						return ERR_PARSE_ERROR;
    6494. 

  6494. 					}
    6495. 

  6495. 				}
    6496. 

  6496. 

  6497. 				if (is_struct) {
    6498. 

  6498. 					type = TYPE_STRUCT;
    6499. 

  6499. 				} else {
    6500. 

  6500. 					type = get_token_datatype(tk.type);
    6501. 

  6501. 				}
    6502. 

  6502. 				TkPos prev_pos = _get_tkpos();
    6503. 

  6503. 				tk = _get_token();
    6504. 

  6504. 				if (tk.type == TK_BRACKET_OPEN) {
    6505. 

  6505. 					_set_error("Cannot use arrays as return types");
    6506. 

  6506. 					return ERR_PARSE_ERROR;
    6507. 

  6507. 				}
    6508. 

  6508. 				_set_tkpos(prev_pos);
    6509. 

  6509. 

  6510. 				_get_completable_identifier(nullptr, COMPLETION_MAIN_FUNCTION, name);
    6511. 

  6511. 

  6512. 				if (name == StringName()) {
    6513. 

  6513. 					_set_error("Expected function name after datatype");
    6514. 

  6514. 					return ERR_PARSE_ERROR;
    6515. 

  6515. 				}
    6516. 

  6516. 

  6517. 				if (_find_identifier(nullptr, false, FunctionInfo(), name)) {
    6518. 

  6518. 					_set_error("Redefinition of '" + String(name) + "'");
    6519. 

  6519. 					return ERR_PARSE_ERROR;
    6520. 

  6520. 				}
    6521. 

  6521. 

  6522. 				if (has_builtin(p_functions, name)) {
    6523. 

  6523. 					_set_error("Redefinition of '" + String(name) + "'");
    6524. 

  6524. 					return ERR_PARSE_ERROR;
    6525. 

  6525. 				}
    6526. 

  6526. 

  6527. 				tk = _get_token();
    6528. 

  6528. 				if (tk.type != TK_PARENTHESIS_OPEN) {
    6529. 

  6529. 					if (type == TYPE_VOID) {
    6530. 

  6530. 						_set_error("Expected '(' after function identifier");
    6531. 

  6531. 						return ERR_PARSE_ERROR;
    6532. 

  6532. 					}
    6533. 

  6533. 

  6534. 					//variable
    6535. 

  6535. 

  6536. 					while (true) {
    6537. 

  6537. 						ShaderNode::Constant constant;
    6538. 

  6538. 						constant.name = name;
    6539. 

  6539. 						constant.type = is_struct ? TYPE_STRUCT : type;
    6540. 

  6540. 						constant.type_str = struct_name;
    6541. 

  6541. 						constant.precision = precision;
    6542. 

  6542. 						constant.initializer = nullptr;
    6543. 

  6543. 						constant.array_size = 0;
    6544. 

  6544. 

  6545. 						bool unknown_size = false;
    6546. 

  6546. 

  6547. 						if (tk.type == TK_BRACKET_OPEN) {
    6548. 

  6548. 							if (RenderingServer::get_singleton()->is_low_end()) {
    6549. 

  6549. 								_set_error("Global const arrays are supported only on high-end platform!");
    6550. 

  6550. 								return ERR_PARSE_ERROR;
    6551. 

  6551. 							}
    6552. 

  6552. 

  6553. 							tk = _get_token();
    6554. 

  6554. 							if (tk.type == TK_BRACKET_CLOSE) {
    6555. 

  6555. 								unknown_size = true;
    6556. 

  6556. 								tk = _get_token();
    6557. 

  6557. 							} else if (tk.type == TK_INT_CONSTANT && ((int)tk.constant) > 0) {
    6558. 

  6558. 								constant.array_size = (int)tk.constant;
    6559. 

  6559. 								tk = _get_token();
    6560. 

  6560. 								if (tk.type != TK_BRACKET_CLOSE) {
    6561. 

  6561. 									_set_error("Expected ']'");
    6562. 

  6562. 									return ERR_PARSE_ERROR;
    6563. 

  6563. 								}
    6564. 

  6564. 								tk = _get_token();
    6565. 

  6565. 							} else {
    6566. 

  6566. 								_set_error("Expected integer constant > 0 or ']'");
    6567. 

  6567. 								return ERR_PARSE_ERROR;
    6568. 

  6568. 							}
    6569. 

  6569. 						}
    6570. 

  6570. 

  6571. 						if (tk.type == TK_OP_ASSIGN) {
    6572. 

  6572. 							if (!is_constant) {
    6573. 

  6573. 								_set_error("Expected 'const' keyword before constant definition");
    6574. 

  6574. 								return ERR_PARSE_ERROR;
    6575. 

  6575. 							}
    6576. 

  6576. 

  6577. 							if (constant.array_size > 0 || unknown_size) {
    6578. 

  6578. 								bool full_def = false;
    6579. 

  6579. 

  6580. 								ArrayDeclarationNode::Declaration decl;
    6581. 

  6581. 								decl.name = name;
    6582. 

  6582. 								decl.size = constant.array_size;
    6583. 

  6583. 

  6584. 								tk = _get_token();
    6585. 

  6585. 

  6586. 								if (tk.type != TK_CURLY_BRACKET_OPEN) {
    6587. 

  6587. 									if (unknown_size) {
    6588. 

  6588. 										_set_error("Expected '{'");
    6589. 

  6589. 										return ERR_PARSE_ERROR;
    6590. 

  6590. 									}
    6591. 

  6591. 

  6592. 									full_def = true;
    6593. 

  6593. 

  6594. 									DataPrecision precision2 = PRECISION_DEFAULT;
    6595. 

  6595. 									if (is_token_precision(tk.type)) {
    6596. 

  6596. 										precision2 = get_token_precision(tk.type);
    6597. 

  6597. 										tk = _get_token();
    6598. 

  6598. 										if (!is_token_nonvoid_datatype(tk.type)) {
    6599. 

  6599. 											_set_error("Expected datatype after precision");
    6600. 

  6600. 											return ERR_PARSE_ERROR;
    6601. 

  6601. 										}
    6602. 

  6602. 									}
    6603. 

  6603. 

  6604. 									StringName struct_name2;
    6605. 

  6605. 									DataType type2;
    6606. 

  6606. 

  6607. 									if (shader->structs.has(tk.text)) {
    6608. 

  6608. 										type2 = TYPE_STRUCT;
    6609. 

  6609. 										struct_name2 = tk.text;
    6610. 

  6610. 									} else {
    6611. 

  6611. 										if (!is_token_variable_datatype(tk.type)) {
    6612. 

  6612. 											_set_error("Invalid data type for array");
    6613. 

  6613. 											return ERR_PARSE_ERROR;
    6614. 

  6614. 										}
    6615. 

  6615. 										type2 = get_token_datatype(tk.type);
    6616. 

  6616. 									}
    6617. 

  6617. 

  6618. 									int array_size2 = 0;
    6619. 

  6619. 

  6620. 									tk = _get_token();
    6621. 

  6621. 									if (tk.type == TK_BRACKET_OPEN) {
    6622. 

  6622. 										TkPos pos2 = _get_tkpos();
    6623. 

  6623. 										tk = _get_token();
    6624. 

  6624. 										if (tk.type == TK_BRACKET_CLOSE) {
    6625. 

  6625. 											array_size2 = constant.array_size;
    6626. 

  6626. 											tk = _get_token();
    6627. 

  6627. 										} else {
    6628. 

  6628. 											_set_tkpos(pos2);
    6629. 

  6629. 

  6630. 											Node *n = _parse_and_reduce_expression(NULL, FunctionInfo());
    6631. 

  6631. 											if (!n || n->type != Node::TYPE_CONSTANT || n->get_datatype() != TYPE_INT) {
    6632. 

  6632. 												_set_error("Expected single integer constant > 0");
    6633. 

  6633. 												return ERR_PARSE_ERROR;
    6634. 

  6634. 											}
    6635. 

  6635. 

  6636. 											ConstantNode *cnode = (ConstantNode *)n;
    6637. 

  6637. 											if (cnode->values.size() == 1) {
    6638. 

  6638. 												array_size2 = cnode->values[0].sint;
    6639. 

  6639. 												if (array_size2 <= 0) {
    6640. 

  6640. 													_set_error("Expected single integer constant > 0");
    6641. 

  6641. 													return ERR_PARSE_ERROR;
    6642. 

  6642. 												}
    6643. 

  6643. 											} else {
    6644. 

  6644. 												_set_error("Expected single integer constant > 0");
    6645. 

  6645. 												return ERR_PARSE_ERROR;
    6646. 

  6646. 											}
    6647. 

  6647. 

  6648. 											tk = _get_token();
    6649. 

  6649. 											if (tk.type != TK_BRACKET_CLOSE) {
    6650. 

  6650. 												_set_error("Expected ']");
    6651. 

  6651. 												return ERR_PARSE_ERROR;
    6652. 

  6652. 											} else {
    6653. 

  6653. 												tk = _get_token();
    6654. 

  6654. 											}
    6655. 

  6655. 										}
    6656. 

  6656. 									} else {
    6657. 

  6657. 										_set_error("Expected '[");
    6658. 

  6658. 										return ERR_PARSE_ERROR;
    6659. 

  6659. 									}
    6660. 

  6660. 

  6661. 									if (constant.precision != precision2 || constant.type != type2 || struct_name != struct_name2 || constant.array_size != array_size2) {
    6662. 

  6662. 										String error_str = "Cannot convert from '";
    6663. 

  6663. 										if (type2 == TYPE_STRUCT) {
    6664. 

  6664. 											error_str += struct_name2;
    6665. 

  6665. 										} else {
    6666. 

  6666. 											if (precision2 != PRECISION_DEFAULT) {
    6667. 

  6667. 												error_str += get_precision_name(precision2);
    6668. 

  6668. 												error_str += " ";
    6669. 

  6669. 											}
    6670. 

  6670. 											error_str += get_datatype_name(type2);
    6671. 

  6671. 										}
    6672. 

  6672. 										error_str += "[";
    6673. 

  6673. 										error_str += itos(array_size2);
    6674. 

  6674. 										error_str += "]'";
    6675. 

  6675. 										error_str += " to '";
    6676. 

  6676. 										if (type == TYPE_STRUCT) {
    6677. 

  6677. 											error_str += struct_name;
    6678. 

  6678. 										} else {
    6679. 

  6679. 											if (precision != PRECISION_DEFAULT) {
    6680. 

  6680. 												error_str += get_precision_name(precision);
    6681. 

  6681. 												error_str += " ";
    6682. 

  6682. 											}
    6683. 

  6683. 											error_str += get_datatype_name(type);
    6684. 

  6684. 										}
    6685. 

  6685. 										error_str += "[";
    6686. 

  6686. 										error_str += itos(constant.array_size);
    6687. 

  6687. 										error_str += "]'";
    6688. 

  6688. 										_set_error(error_str);
    6689. 

  6689. 										return ERR_PARSE_ERROR;
    6690. 

  6690. 									}
    6691. 

  6691. 								}
    6692. 

  6692. 

  6693. 								bool curly = tk.type == TK_CURLY_BRACKET_OPEN;
    6694. 

  6694. 

  6695. 								if (unknown_size) {
    6696. 

  6696. 									if (!curly) {
    6697. 

  6697. 										_set_error("Expected '{'");
    6698. 

  6698. 										return ERR_PARSE_ERROR;
    6699. 

  6699. 									}
    6700. 

  6700. 								} else {
    6701. 

  6701. 									if (full_def) {
    6702. 

  6702. 										if (curly) {
    6703. 

  6703. 											_set_error("Expected '('");
    6704. 

  6704. 											return ERR_PARSE_ERROR;
    6705. 

  6705. 										}
    6706. 

  6706. 									}
    6707. 

  6707. 								}
    6708. 

  6708. 

  6709. 								if (tk.type == TK_PARENTHESIS_OPEN || curly) { // initialization
    6710. 

  6710. 									while (true) {
    6711. 

  6711. 										Node *n = _parse_and_reduce_expression(NULL, FunctionInfo());
    6712. 

  6712. 										if (!n) {
    6713. 

  6713. 											return ERR_PARSE_ERROR;
    6714. 

  6714. 										}
    6715. 

  6715. 

  6716. 										if (n->type == Node::TYPE_OPERATOR && ((OperatorNode *)n)->op == OP_CALL) {
    6717. 

  6717. 											_set_error("Expected constant expression");
    6718. 

  6718. 											return ERR_PARSE_ERROR;
    6719. 

  6719. 										}
    6720. 

  6720. 

  6721. 										if (constant.type != n->get_datatype() || n->get_datatype_name() != struct_name) {
    6722. 

  6722. 											_set_error("Invalid assignment of '" + (n->get_datatype() == TYPE_STRUCT ? n->get_datatype_name() : get_datatype_name(n->get_datatype())) + "' to '" + (is_struct ? String(struct_name) : get_datatype_name(constant.type)) + "'");
    6723. 

  6723. 											return ERR_PARSE_ERROR;
    6724. 

  6724. 										}
    6725. 

  6725. 

  6726. 										tk = _get_token();
    6727. 

  6727. 										if (tk.type == TK_COMMA) {
    6728. 

  6728. 											decl.initializer.push_back(n);
    6729. 

  6729. 											continue;
    6730. 

  6730. 										} else if (!curly && tk.type == TK_PARENTHESIS_CLOSE) {
    6731. 

  6731. 											decl.initializer.push_back(n);
    6732. 

  6732. 											break;
    6733. 

  6733. 										} else if (curly && tk.type == TK_CURLY_BRACKET_CLOSE) {
    6734. 

  6734. 											decl.initializer.push_back(n);
    6735. 

  6735. 											break;
    6736. 

  6736. 										} else {
    6737. 

  6737. 											if (curly)
    6738. 

  6738. 												_set_error("Expected '}' or ','");
    6739. 

  6739. 											else
    6740. 

  6740. 												_set_error("Expected ')' or ','");
    6741. 

  6741. 											return ERR_PARSE_ERROR;
    6742. 

  6742. 										}
    6743. 

  6743. 									}
    6744. 

  6744. 									if (unknown_size) {
    6745. 

  6745. 										decl.size = decl.initializer.size();
    6746. 

  6746. 										constant.array_size = decl.initializer.size();
    6747. 

  6747. 									} else if (decl.initializer.size() != constant.array_size) {
    6748. 

  6748. 										_set_error("Array size mismatch");
    6749. 

  6749. 										return ERR_PARSE_ERROR;
    6750. 

  6750. 									}
    6751. 

  6751. 								}
    6752. 

  6752. 

  6753. 								ConstantNode *expr = memnew(ConstantNode);
    6754. 

  6754. 

  6755. 								expr->datatype = constant.type;
    6756. 

  6756. 

  6757. 								expr->struct_name = constant.type_str;
    6758. 

  6758. 

  6759. 								expr->array_size = constant.array_size;
    6760. 

  6760. 

  6761. 								expr->array_declarations.push_back(decl);
    6762. 

  6762. 

  6763. 								constant.initializer = static_cast<ConstantNode *>(expr);
    6764. 

  6764. 							} else {
    6765. 

  6765. 								//variable created with assignment! must parse an expression
    6766. 

  6766. 								Node *expr = _parse_and_reduce_expression(NULL, FunctionInfo());
    6767. 

  6767. 								if (!expr)
    6768. 

  6768. 									return ERR_PARSE_ERROR;
    6769. 

  6769. 								if (expr->type == Node::TYPE_OPERATOR && ((OperatorNode *)expr)->op == OP_CALL) {
    6770. 

  6770. 									_set_error("Expected constant expression after '='");
    6771. 

  6771. 									return ERR_PARSE_ERROR;
    6772. 

  6772. 								}
    6773. 

  6773. 

  6774. 								constant.initializer = static_cast<ConstantNode *>(expr);
    6775. 

  6775. 

  6776. 								if (type != expr->get_datatype() || expr->get_datatype_name() != struct_name) {
    6777. 

  6777. 									_set_error("Invalid assignment of '" + (expr->get_datatype() == TYPE_STRUCT ? expr->get_datatype_name() : get_datatype_name(expr->get_datatype())) + "' to '" + (is_struct ? String(struct_name) : get_datatype_name(type)) + "'");
    6778. 

  6778. 									return ERR_PARSE_ERROR;
    6779. 

  6779. 								}
    6780. 

  6780. 							}
    6781. 

  6781. 							tk = _get_token();
    6782. 

  6782. 						} else {
    6783. 

  6783. 							if (constant.array_size > 0 || unknown_size) {
    6784. 

  6784. 								_set_error("Expected array initialization");
    6785. 

  6785. 								return ERR_PARSE_ERROR;
    6786. 

  6786. 							} else {
    6787. 

  6787. 								_set_error("Expected initialization of constant");
    6788. 

  6788. 								return ERR_PARSE_ERROR;
    6789. 

  6789. 							}
    6790. 

  6790. 						}
    6791. 

  6791. 

  6792. 						shader->constants[name] = constant;
    6793. 

  6793. 						shader->vconstants.push_back(constant);
    6794. 

  6794. 

  6795. 						if (tk.type == TK_COMMA) {
    6796. 

  6796. 							tk = _get_token();
    6797. 

  6797. 							if (tk.type != TK_IDENTIFIER) {
    6798. 

  6798. 								_set_error("Expected identifier after type");
    6799. 

  6799. 								return ERR_PARSE_ERROR;
    6800. 

  6800. 							}
    6801. 

  6801. 

  6802. 							name = tk.text;
    6803. 

  6803. 							if (_find_identifier(nullptr, false, FunctionInfo(), name)) {
    6804. 

  6804. 								_set_error("Redefinition of '" + String(name) + "'");
    6805. 

  6805. 								return ERR_PARSE_ERROR;
    6806. 

  6806. 							}
    6807. 

  6807. 

  6808. 							if (has_builtin(p_functions, name)) {
    6809. 

  6809. 								_set_error("Redefinition of '" + String(name) + "'");
    6810. 

  6810. 								return ERR_PARSE_ERROR;
    6811. 

  6811. 							}
    6812. 

  6812. 

  6813. 							tk = _get_token();
    6814. 

  6814. 

  6815. 						} else if (tk.type == TK_SEMICOLON) {
    6816. 

  6816. 							break;
    6817. 

  6817. 						} else {
    6818. 

  6818. 							_set_error("Expected ',' or ';' after constant");
    6819. 

  6819. 							return ERR_PARSE_ERROR;
    6820. 

  6820. 						}
    6821. 

  6821. 					}
    6822. 

  6822. 

  6823. 					break;
    6824. 

  6824. 				}
    6825. 

  6825. 

  6826. 				FunctionInfo builtins;
    6827. 

  6827. 				if (p_functions.has(name)) {
    6828. 

  6828. 					builtins = p_functions[name];
    6829. 

  6829. 				}
    6830. 

  6830. 

  6831. 				if (p_functions.has("global")) { // Adds global variables: 'TIME'
    6832. 

  6832. 					for (Map<StringName, BuiltInInfo>::Element *E = p_functions["global"].built_ins.front(); E; E = E->next()) {
    6833. 

  6833. 						builtins.built_ins.insert(E->key(), E->value());
    6834. 

  6834. 					}
    6835. 

  6835. 				}
    6836. 

  6836. 

  6837. 				ShaderNode::Function function;
    6838. 

  6838. 

  6839. 				function.callable = !p_functions.has(name);
    6840. 

  6840. 				function.name = name;
    6841. 

  6841. 

  6842. 				FunctionNode *func_node = alloc_node<FunctionNode>();
    6843. 

  6843. 

  6844. 				function.function = func_node;
    6845. 

  6845. 

  6846. 				shader->functions.push_back(function);
    6847. 

  6847. 

  6848. 				func_node->name = name;
    6849. 

  6849. 				func_node->return_type = type;
    6850. 

  6850. 				func_node->return_struct_name = struct_name;
    6851. 

  6851. 				func_node->return_precision = precision;
    6852. 

  6852. 

  6853. 				if (p_functions.has(name)) {
    6854. 

  6854. 					func_node->can_discard = p_functions[name].can_discard;
    6855. 

  6855. 				}
    6856. 

  6856. 

  6857. 				func_node->body = alloc_node<BlockNode>();
    6858. 

  6858. 				func_node->body->parent_function = func_node;
    6859. 

  6859. 

  6860. 				tk = _get_token();
    6861. 

  6861. 

  6862. 				while (true) {
    6863. 

  6863. 					if (tk.type == TK_PARENTHESIS_CLOSE) {
    6864. 

  6864. 						break;
    6865. 

  6865. 					}
    6866. 

  6866. 

  6867. 					bool is_const = false;
    6868. 

  6868. 					if (tk.type == TK_CONST) {
    6869. 

  6869. 						is_const = true;
    6870. 

  6870. 						tk = _get_token();
    6871. 

  6871. 					}
    6872. 

  6872. 

  6873. 					ArgumentQualifier qualifier = ARGUMENT_QUALIFIER_IN;
    6874. 

  6874. 

  6875. 					if (tk.type == TK_ARG_IN) {
    6876. 

  6876. 						qualifier = ARGUMENT_QUALIFIER_IN;
    6877. 

  6877. 						tk = _get_token();
    6878. 

  6878. 					} else if (tk.type == TK_ARG_OUT) {
    6879. 

  6879. 						if (is_const) {
    6880. 

  6880. 							_set_error("'out' qualifier cannot be used within a function parameter declared with 'const'.");
    6881. 

  6881. 							return ERR_PARSE_ERROR;
    6882. 

  6882. 						}
    6883. 

  6883. 						qualifier = ARGUMENT_QUALIFIER_OUT;
    6884. 

  6884. 						tk = _get_token();
    6885. 

  6885. 					} else if (tk.type == TK_ARG_INOUT) {
    6886. 

  6886. 						if (is_const) {
    6887. 

  6887. 							_set_error("'inout' qualifier cannot be used within a function parameter declared with 'const'.");
    6888. 

  6888. 							return ERR_PARSE_ERROR;
    6889. 

  6889. 						}
    6890. 

  6890. 						qualifier = ARGUMENT_QUALIFIER_INOUT;
    6891. 

  6891. 						tk = _get_token();
    6892. 

  6892. 					}
    6893. 

  6893. 

  6894. 					DataType ptype;
    6895. 

  6895. 					StringName pname;
    6896. 

  6896. 					StringName param_struct_name;
    6897. 

  6897. 					DataPrecision pprecision = PRECISION_DEFAULT;
    6898. 

  6898. 					bool use_precision = false;
    6899. 

  6899. 

  6900. 					if (is_token_precision(tk.type)) {
    6901. 

  6901. 						pprecision = get_token_precision(tk.type);
    6902. 

  6902. 						tk = _get_token();
    6903. 

  6903. 						use_precision = true;
    6904. 

  6904. 					}
    6905. 

  6905. 

  6906. 					is_struct = false;
    6907. 

  6907. 

  6908. 					if (shader->structs.has(tk.text)) {
    6909. 

  6909. 						is_struct = true;
    6910. 

  6910. 						param_struct_name = tk.text;
    6911. 

  6911. 						if (use_precision) {
    6912. 

  6912. 							_set_error("Precision modifier cannot be used on structs.");
    6913. 

  6913. 							return ERR_PARSE_ERROR;
    6914. 

  6914. 						}
    6915. 

  6915. 					}
    6916. 

  6916. 

  6917. 					if (!is_struct && !is_token_datatype(tk.type)) {
    6918. 

  6918. 						_set_error("Expected a valid datatype for argument");
    6919. 

  6919. 						return ERR_PARSE_ERROR;
    6920. 

  6920. 					}
    6921. 

  6921. 

  6922. 					if (qualifier == ARGUMENT_QUALIFIER_OUT || qualifier == ARGUMENT_QUALIFIER_INOUT) {
    6923. 

  6923. 						if (is_sampler_type(get_token_datatype(tk.type))) {
    6924. 

  6924. 							_set_error("Opaque types cannot be output parameters.");
    6925. 

  6925. 							return ERR_PARSE_ERROR;
    6926. 

  6926. 						}
    6927. 

  6927. 					}
    6928. 

  6928. 

  6929. 					if (is_struct) {
    6930. 

  6930. 						ptype = TYPE_STRUCT;
    6931. 

  6931. 					} else {
    6932. 

  6932. 						ptype = get_token_datatype(tk.type);
    6933. 

  6933. 						if (_validate_datatype(ptype) != OK) {
    6934. 

  6934. 							return ERR_PARSE_ERROR;
    6935. 

  6935. 						}
    6936. 

  6936. 						if (ptype == TYPE_VOID) {
    6937. 

  6937. 							_set_error("void not allowed in argument");
    6938. 

  6938. 							return ERR_PARSE_ERROR;
    6939. 

  6939. 						}
    6940. 

  6940. 					}
    6941. 

  6941. 

  6942. 					tk = _get_token();
    6943. 

  6943. 

  6944. 					if (tk.type == TK_BRACKET_OPEN) {
    6945. 

  6945. 						_set_error("Arrays as parameters are not implemented yet");
    6946. 

  6946. 						return ERR_PARSE_ERROR;
    6947. 

  6947. 					}
    6948. 

  6948. 					if (tk.type != TK_IDENTIFIER) {
    6949. 

  6949. 						_set_error("Expected identifier for argument name");
    6950. 

  6950. 						return ERR_PARSE_ERROR;
    6951. 

  6951. 					}
    6952. 

  6952. 

  6953. 					pname = tk.text;
    6954. 

  6954. 

  6955. 					ShaderLanguage::IdentifierType itype;
    6956. 

  6956. 					if (_find_identifier(func_node->body, false, builtins, pname, (ShaderLanguage::DataType *)nullptr, &itype)) {
    6957. 

  6957. 						if (itype != IDENTIFIER_FUNCTION) {
    6958. 

  6958. 							_set_error("Redefinition of '" + String(pname) + "'");
    6959. 

  6959. 							return ERR_PARSE_ERROR;
    6960. 

  6960. 						}
    6961. 

  6961. 					}
    6962. 

  6962. 

  6963. 					if (has_builtin(p_functions, pname)) {
    6964. 

  6964. 						_set_error("Redefinition of '" + String(pname) + "'");
    6965. 

  6965. 						return ERR_PARSE_ERROR;
    6966. 

  6966. 					}
    6967. 

  6967. 

  6968. 					FunctionNode::Argument arg;
    6969. 

  6969. 					arg.type = ptype;
    6970. 

  6970. 					arg.name = pname;
    6971. 

  6971. 					arg.type_str = param_struct_name;
    6972. 

  6972. 					arg.precision = pprecision;
    6973. 

  6973. 					arg.qualifier = qualifier;
    6974. 

  6974. 					arg.tex_argument_check = false;
    6975. 

  6975. 					arg.tex_builtin_check = false;
    6976. 

  6976. 					arg.tex_argument_filter = FILTER_DEFAULT;
    6977. 

  6977. 					arg.tex_argument_repeat = REPEAT_DEFAULT;
    6978. 

  6978. 					arg.is_const = is_const;
    6979. 

  6979. 

  6980. 					func_node->arguments.push_back(arg);
    6981. 

  6981. 

  6982. 					tk = _get_token();
    6983. 

  6983. 					if (tk.type == TK_BRACKET_OPEN) {
    6984. 

  6984. 						_set_error("Arrays as parameters are not implemented yet");
    6985. 

  6985. 						return ERR_PARSE_ERROR;
    6986. 

  6986. 					}
    6987. 

  6987. 

  6988. 					if (tk.type == TK_COMMA) {
    6989. 

  6989. 						tk = _get_token();
    6990. 

  6990. 						//do none and go on
    6991. 

  6991. 					} else if (tk.type != TK_PARENTHESIS_CLOSE) {
    6992. 

  6992. 						_set_error("Expected ',' or ')' after identifier");
    6993. 

  6993. 						return ERR_PARSE_ERROR;
    6994. 

  6994. 					}
    6995. 

  6995. 				}
    6996. 

  6996. 

  6997. 				if (p_functions.has(name)) {
    6998. 

  6998. 					//if one of the core functions, make sure they are of the correct form
    6999. 

  6999. 					if (func_node->arguments.size() > 0) {
    7000. 

  7000. 						_set_error("Function '" + String(name) + "' expects no arguments.");
    7001. 

  7001. 						return ERR_PARSE_ERROR;
    7002. 

  7002. 					}
    7003. 

  7003. 					if (func_node->return_type != TYPE_VOID) {
    7004. 

  7004. 						_set_error("Function '" + String(name) + "' must be of void return type.");
    7005. 

  7005. 						return ERR_PARSE_ERROR;
    7006. 

  7006. 					}
    7007. 

  7007. 				}
    7008. 

  7008. 

  7009. 				//all good let's parse inside the function!
    7010. 

  7010. 				tk = _get_token();
    7011. 

  7011. 				if (tk.type != TK_CURLY_BRACKET_OPEN) {
    7012. 

  7012. 					_set_error("Expected '{' to begin function");
    7013. 

  7013. 					return ERR_PARSE_ERROR;
    7014. 

  7014. 				}
    7015. 

  7015. 

  7016. 				current_function = name;
    7017. 

  7017. 

  7018. 				Error err = _parse_block(func_node->body, builtins);
    7019. 

  7019. 				if (err) {
    7020. 

  7020. 					return err;
    7021. 

  7021. 				}
    7022. 

  7022. 

  7023. 				if (func_node->return_type != DataType::TYPE_VOID) {
    7024. 

  7024. 					BlockNode *block = func_node->body;
    7025. 

  7025. 					if (_find_last_flow_op_in_block(block, FlowOperation::FLOW_OP_RETURN) != OK) {
    7026. 

  7026. 						_set_error("Expected at least one return statement in a non-void function.");
    7027. 

  7027. 						return ERR_PARSE_ERROR;
    7028. 

  7028. 					}
    7029. 

  7029. 				}
    7030. 

  7030. 				current_function = StringName();
    7031. 

  7031. 			}
    7032. 

  7032. 		}
    7033. 

  7033. 

  7034. 		tk = _get_token();
    7035. 

  7035. 	}
    7036. 

  7036. 

  7037. 	return OK;
    7038. 

  7038. }
    7039. 

  7039. 

  7040. bool ShaderLanguage::has_builtin(const Map<StringName, ShaderLanguage::FunctionInfo> &p_functions, const StringName &p_name) {
    7041. 

  7041. 	if (p_functions.has("vertex")) {
    7042. 

  7042. 		if (p_functions["vertex"].built_ins.has(p_name)) {
    7043. 

  7043. 			return true;
    7044. 

  7044. 		}
    7045. 

  7045. 	}
    7046. 

  7046. 	if (p_functions.has("fragment")) {
    7047. 

  7047. 		if (p_functions["fragment"].built_ins.has(p_name)) {
    7048. 

  7048. 			return true;
    7049. 

  7049. 		}
    7050. 

  7050. 	}
    7051. 

  7051. 	if (p_functions.has("light")) {
    7052. 

  7052. 		if (p_functions["light"].built_ins.has(p_name)) {
    7053. 

  7053. 			return true;
    7054. 

  7054. 		}
    7055. 

  7055. 	}
    7056. 

  7056. 	if (p_functions.has("compute")) {
    7057. 

  7057. 		if (p_functions["compute"].built_ins.has(p_name)) {
    7058. 

  7058. 			return true;
    7059. 

  7059. 		}
    7060. 

  7060. 	}
    7061. 

  7061. 	return false;
    7062. 

  7062. }
    7063. 

  7063. 

  7064. Error ShaderLanguage::_find_last_flow_op_in_op(ControlFlowNode *p_flow, FlowOperation p_op) {
    7065. 

  7065. 	bool found = false;
    7066. 

  7066. 

  7067. 	for (int i = p_flow->blocks.size() - 1; i >= 0; i--) {
    7068. 

  7068. 		if (p_flow->blocks[i]->type == Node::TYPE_BLOCK) {
    7069. 

  7069. 			BlockNode *last_block = (BlockNode *)p_flow->blocks[i];
    7070. 

  7070. 			if (_find_last_flow_op_in_block(last_block, p_op) == OK) {
    7071. 

  7071. 				found = true;
    7072. 

  7072. 				break;
    7073. 

  7073. 			}
    7074. 

  7074. 		}
    7075. 

  7075. 	}
    7076. 

  7076. 	if (found) {
    7077. 

  7077. 		return OK;
    7078. 

  7078. 	}
    7079. 

  7079. 	return FAILED;
    7080. 

  7080. }
    7081. 

  7081. 

  7082. Error ShaderLanguage::_find_last_flow_op_in_block(BlockNode *p_block, FlowOperation p_op) {
    7083. 

  7083. 	bool found = false;
    7084. 

  7084. 

  7085. 	for (int i = p_block->statements.size() - 1; i >= 0; i--) {
    7086. 

  7086. 		if (p_block->statements[i]->type == Node::TYPE_CONTROL_FLOW) {
    7087. 

  7087. 			ControlFlowNode *flow = (ControlFlowNode *)p_block->statements[i];
    7088. 

  7088. 			if (flow->flow_op == p_op) {
    7089. 

  7089. 				found = true;
    7090. 

  7090. 				break;
    7091. 

  7091. 			} else {
    7092. 

  7092. 				if (_find_last_flow_op_in_op(flow, p_op) == OK) {
    7093. 

  7093. 					found = true;
    7094. 

  7094. 					break;
    7095. 

  7095. 				}
    7096. 

  7096. 			}
    7097. 

  7097. 		} else if (p_block->statements[i]->type == Node::TYPE_BLOCK) {
    7098. 

  7098. 			BlockNode *block = (BlockNode *)p_block->statements[i];
    7099. 

  7099. 			if (_find_last_flow_op_in_block(block, p_op) == OK) {
    7100. 

  7100. 				found = true;
    7101. 

  7101. 				break;
    7102. 

  7102. 			}
    7103. 

  7103. 		}
    7104. 

  7104. 	}
    7105. 

  7105. 

  7106. 	if (found) {
    7107. 

  7107. 		return OK;
    7108. 

  7108. 	}
    7109. 

  7109. 	return FAILED;
    7110. 

  7110. }
    7111. 

  7111. 

  7112. // skips over whitespace and /* */ and // comments
    7113. 

  7113. static int _get_first_ident_pos(const String &p_code) {
    7114. 

  7114. 	int idx = 0;
    7115. 

  7115. 

  7116. #define GETCHAR(m_idx) (((idx + m_idx) < p_code.length()) ? p_code[idx + m_idx] : char32_t(0))
    7117. 

  7117. 

  7118. 	while (true) {
    7119. 

  7119. 		if (GETCHAR(0) == '/' && GETCHAR(1) == '/') {
    7120. 

  7120. 			idx += 2;
    7121. 

  7121. 			while (true) {
    7122. 

  7122. 				if (GETCHAR(0) == 0) {
    7123. 

  7123. 					return 0;
    7124. 

  7124. 				}
    7125. 

  7125. 				if (GETCHAR(0) == '\n') {
    7126. 

  7126. 					idx++;
    7127. 

  7127. 					break; // loop
    7128. 

  7128. 				}
    7129. 

  7129. 				idx++;
    7130. 

  7130. 			}
    7131. 

  7131. 		} else if (GETCHAR(0) == '/' && GETCHAR(1) == '*') {
    7132. 

  7132. 			idx += 2;
    7133. 

  7133. 			while (true) {
    7134. 

  7134. 				if (GETCHAR(0) == 0) {
    7135. 

  7135. 					return 0;
    7136. 

  7136. 				}
    7137. 

  7137. 				if (GETCHAR(0) == '*' && GETCHAR(1) == '/') {
    7138. 

  7138. 					idx += 2;
    7139. 

  7139. 					break; // loop
    7140. 

  7140. 				}
    7141. 

  7141. 				idx++;
    7142. 

  7142. 			}
    7143. 

  7143. 		} else {
    7144. 

  7144. 			switch (GETCHAR(0)) {
    7145. 

  7145. 				case ' ':
    7146. 

  7146. 				case '\t':
    7147. 

  7147. 				case '\r':
    7148. 

  7148. 				case '\n': {
    7149. 

  7149. 					idx++;
    7150. 

  7150. 				} break; // switch
    7151. 

  7151. 				default:
    7152. 

  7152. 					return idx;
    7153. 

  7153. 			}
    7154. 

  7154. 		}
    7155. 

  7155. 	}
    7156. 

  7156. 

  7157. #undef GETCHAR
    7158. 

  7158. }
    7159. 

  7159. 

  7160. String ShaderLanguage::get_shader_type(const String &p_code) {
    7161. 

  7161. 	bool reading_type = false;
    7162. 

  7162. 

  7163. 	String cur_identifier;
    7164. 

  7164. 

  7165. 	for (int i = _get_first_ident_pos(p_code); i < p_code.length(); i++) {
    7166. 

  7166. 		if (p_code[i] == ';') {
    7167. 

  7167. 			break;
    7168. 

  7168. 

  7169. 		} else if (p_code[i] <= 32) {
    7170. 

  7170. 			if (cur_identifier != String()) {
    7171. 

  7171. 				if (!reading_type) {
    7172. 

  7172. 					if (cur_identifier != "shader_type") {
    7173. 

  7173. 						return String();
    7174. 

  7174. 					}
    7175. 

  7175. 

  7176. 					reading_type = true;
    7177. 

  7177. 					cur_identifier = String();
    7178. 

  7178. 				} else {
    7179. 

  7179. 					return cur_identifier;
    7180. 

  7180. 				}
    7181. 

  7181. 			}
    7182. 

  7182. 		} else {
    7183. 

  7183. 			cur_identifier += String::chr(p_code[i]);
    7184. 

  7184. 		}
    7185. 

  7185. 	}
    7186. 

  7186. 

  7187. 	if (reading_type) {
    7188. 

  7188. 		return cur_identifier;
    7189. 

  7189. 	}
    7190. 

  7190. 

  7191. 	return String();
    7192. 

  7192. }
    7193. 

  7193. 

  7194. Error ShaderLanguage::compile(const String &p_code, const Map<StringName, FunctionInfo> &p_functions, const Vector<StringName> &p_render_modes, const Set<String> &p_shader_types, GlobalVariableGetTypeFunc p_global_variable_type_func) {
    7195. 

  7195. 	clear();
    7196. 

  7196. 

  7197. 	code = p_code;
    7198. 

  7198. 	global_var_get_type_func = p_global_variable_type_func;
    7199. 

  7199. 

  7200. 	nodes = nullptr;
    7201. 

  7201. 

  7202. 	shader = alloc_node<ShaderNode>();
    7203. 

  7203. 	Error err = _parse_shader(p_functions, p_render_modes, p_shader_types);
    7204. 

  7204. 

  7205. 	if (err != OK) {
    7206. 

  7206. 		return err;
    7207. 

  7207. 	}
    7208. 

  7208. 	return OK;
    7209. 

  7209. }
    7210. 

  7210. 

  7211. Error ShaderLanguage::complete(const String &p_code, const Map<StringName, FunctionInfo> &p_functions, const Vector<StringName> &p_render_modes, const Set<String> &p_shader_types, GlobalVariableGetTypeFunc p_global_variable_type_func, List<ScriptCodeCompletionOption> *r_options, String &r_call_hint) {
    7212. 

  7212. 	clear();
    7213. 

  7213. 

  7214. 	code = p_code;
    7215. 

  7215. 

  7216. 	nodes = nullptr;
    7217. 

  7217. 	global_var_get_type_func = p_global_variable_type_func;
    7218. 

  7218. 

  7219. 	shader = alloc_node<ShaderNode>();
    7220. 

  7220. 	_parse_shader(p_functions, p_render_modes, p_shader_types);
    7221. 

  7221. 

  7222. 	switch (completion_type) {
    7223. 

  7223. 		case COMPLETION_NONE: {
    7224. 

  7224. 			//do nothing
    7225. 

  7225. 			return OK;
    7226. 

  7226. 		} break;
    7227. 

  7227. 		case COMPLETION_RENDER_MODE: {
    7228. 

  7228. 			for (int i = 0; i < p_render_modes.size(); i++) {
    7229. 

  7229. 				ScriptCodeCompletionOption option(p_render_modes[i], ScriptCodeCompletionOption::KIND_ENUM);
    7230. 

  7230. 				r_options->push_back(option);
    7231. 

  7231. 			}
    7232. 

  7232. 

  7233. 			return OK;
    7234. 

  7234. 		} break;
    7235. 

  7235. 		case COMPLETION_STRUCT: {
    7236. 

  7236. 			if (shader->structs.has(completion_struct)) {
    7237. 

  7237. 				StructNode *node = shader->structs[completion_struct].shader_struct;
    7238. 

  7238. 				for (int i = 0; i < node->members.size(); i++) {
    7239. 

  7239. 					ScriptCodeCompletionOption option(node->members[i]->name, ScriptCodeCompletionOption::KIND_MEMBER);
    7240. 

  7240. 					r_options->push_back(option);
    7241. 

  7241. 				}
    7242. 

  7242. 			}
    7243. 

  7243. 

  7244. 			return OK;
    7245. 

  7245. 		} break;
    7246. 

  7246. 		case COMPLETION_MAIN_FUNCTION: {
    7247. 

  7247. 			for (const Map<StringName, FunctionInfo>::Element *E = p_functions.front(); E; E = E->next()) {
    7248. 

  7248. 				ScriptCodeCompletionOption option(E->key(), ScriptCodeCompletionOption::KIND_FUNCTION);
    7249. 

  7249. 				r_options->push_back(option);
    7250. 

  7250. 			}
    7251. 

  7251. 

  7252. 			return OK;
    7253. 

  7253. 		} break;
    7254. 

  7254. 		case COMPLETION_IDENTIFIER:
    7255. 

  7255. 		case COMPLETION_FUNCTION_CALL: {
    7256. 

  7256. 			bool comp_ident = completion_type == COMPLETION_IDENTIFIER;
    7257. 

  7257. 			Map<String, ScriptCodeCompletionOption::Kind> matches;
    7258. 

  7258. 			StringName skip_function;
    7259. 

  7259. 			BlockNode *block = completion_block;
    7260. 

  7260. 

  7261. 			if (completion_class == TAG_GLOBAL) {
    7262. 

  7262. 				while (block) {
    7263. 

  7263. 					if (comp_ident) {
    7264. 

  7264. 						for (const Map<StringName, BlockNode::Variable>::Element *E = block->variables.front(); E; E = E->next()) {
    7265. 

  7265. 							if (E->get().line < completion_line) {
    7266. 

  7266. 								matches.insert(E->key(), ScriptCodeCompletionOption::KIND_VARIABLE);
    7267. 

  7267. 							}
    7268. 

  7268. 						}
    7269. 

  7269. 					}
    7270. 

  7270. 

  7271. 					if (block->parent_function) {
    7272. 

  7272. 						if (comp_ident) {
    7273. 

  7273. 							for (int i = 0; i < block->parent_function->arguments.size(); i++) {
    7274. 

  7274. 								matches.insert(block->parent_function->arguments[i].name, ScriptCodeCompletionOption::KIND_VARIABLE);
    7275. 

  7275. 							}
    7276. 

  7276. 						}
    7277. 

  7277. 						skip_function = block->parent_function->name;
    7278. 

  7278. 					}
    7279. 

  7279. 					block = block->parent_block;
    7280. 

  7280. 				}
    7281. 

  7281. 

  7282. 				if (comp_ident) {
    7283. 

  7283. 					if (p_functions.has("global")) {
    7284. 

  7284. 						for (Map<StringName, BuiltInInfo>::Element *E = p_functions["global"].built_ins.front(); E; E = E->next()) {
    7285. 

  7285. 							ScriptCodeCompletionOption::Kind kind = ScriptCodeCompletionOption::KIND_MEMBER;
    7286. 

  7286. 							if (E->get().constant) {
    7287. 

  7287. 								kind = ScriptCodeCompletionOption::KIND_CONSTANT;
    7288. 

  7288. 							}
    7289. 

  7289. 							matches.insert(E->key(), kind);
    7290. 

  7290. 						}
    7291. 

  7291. 					}
    7292. 

  7292. 

  7293. 					if (skip_function != StringName() && p_functions.has(skip_function)) {
    7294. 

  7294. 						for (Map<StringName, BuiltInInfo>::Element *E = p_functions[skip_function].built_ins.front(); E; E = E->next()) {
    7295. 

  7295. 							ScriptCodeCompletionOption::Kind kind = ScriptCodeCompletionOption::KIND_MEMBER;
    7296. 

  7296. 							if (E->get().constant) {
    7297. 

  7297. 								kind = ScriptCodeCompletionOption::KIND_CONSTANT;
    7298. 

  7298. 							}
    7299. 

  7299. 							matches.insert(E->key(), kind);
    7300. 

  7300. 						}
    7301. 

  7301. 					}
    7302. 

  7302. 

  7303. 					for (const Map<StringName, ShaderNode::Varying>::Element *E = shader->varyings.front(); E; E = E->next()) {
    7304. 

  7304. 						matches.insert(E->key(), ScriptCodeCompletionOption::KIND_VARIABLE);
    7305. 

  7305. 					}
    7306. 

  7306. 					for (const Map<StringName, ShaderNode::Uniform>::Element *E = shader->uniforms.front(); E; E = E->next()) {
    7307. 

  7307. 						matches.insert(E->key(), ScriptCodeCompletionOption::KIND_MEMBER);
    7308. 

  7308. 					}
    7309. 

  7309. 				}
    7310. 

  7310. 

  7311. 				for (int i = 0; i < shader->functions.size(); i++) {
    7312. 

  7312. 					if (!shader->functions[i].callable || shader->functions[i].name == skip_function) {
    7313. 

  7313. 						continue;
    7314. 

  7314. 					}
    7315. 

  7315. 					matches.insert(String(shader->functions[i].name), ScriptCodeCompletionOption::KIND_FUNCTION);
    7316. 

  7316. 				}
    7317. 

  7317. 

  7318. 				int idx = 0;
    7319. 

  7319. 				bool low_end = RenderingServer::get_singleton()->is_low_end();
    7320. 

  7320. 

  7321. 				while (builtin_func_defs[idx].name) {
    7322. 

  7322. 					if (low_end && builtin_func_defs[idx].high_end) {
    7323. 

  7323. 						idx++;
    7324. 

  7324. 						continue;
    7325. 

  7325. 					}
    7326. 

  7326. 					matches.insert(String(builtin_func_defs[idx].name), ScriptCodeCompletionOption::KIND_FUNCTION);
    7327. 

  7327. 					idx++;
    7328. 

  7328. 				}
    7329. 

  7329. 

  7330. 			} else { // sub-class
    7331. 

  7331. 				int idx = 0;
    7332. 

  7332. 				bool low_end = RenderingServer::get_singleton()->is_low_end();
    7333. 

  7333. 

  7334. 				while (builtin_func_defs[idx].name) {
    7335. 

  7335. 					if (low_end && builtin_func_defs[idx].high_end) {
    7336. 

  7336. 						idx++;
    7337. 

  7337. 						continue;
    7338. 

  7338. 					}
    7339. 

  7339. 					if (builtin_func_defs[idx].tag == completion_class) {
    7340. 

  7340. 						matches.insert(String(builtin_func_defs[idx].name), ScriptCodeCompletionOption::KIND_FUNCTION);
    7341. 

  7341. 					}
    7342. 

  7342. 					idx++;
    7343. 

  7343. 				}
    7344. 

  7344. 			}
    7345. 

  7345. 

  7346. 			for (Map<String, ScriptCodeCompletionOption::Kind>::Element *E = matches.front(); E; E = E->next()) {
    7347. 

  7347. 				ScriptCodeCompletionOption option(E->key(), E->value());
    7348. 

  7348. 				if (E->value() == ScriptCodeCompletionOption::KIND_FUNCTION) {
    7349. 

  7349. 					option.insert_text += "(";
    7350. 

  7350. 				}
    7351. 

  7351. 				r_options->push_back(option);
    7352. 

  7352. 			}
    7353. 

  7353. 

  7354. 			return OK;
    7355. 

  7355. 		} break;
    7356. 

  7356. 		case COMPLETION_CALL_ARGUMENTS: {
    7357. 

  7357. 			for (int i = 0; i < shader->functions.size(); i++) {
    7358. 

  7358. 				if (!shader->functions[i].callable) {
    7359. 

  7359. 					continue;
    7360. 

  7360. 				}
    7361. 

  7361. 				if (shader->functions[i].name == completion_function) {
    7362. 

  7362. 					String calltip;
    7363. 

  7363. 

  7364. 					calltip += get_datatype_name(shader->functions[i].function->return_type);
    7365. 

  7365. 					calltip += " ";
    7366. 

  7366. 					calltip += shader->functions[i].name;
    7367. 

  7367. 					calltip += "(";
    7368. 

  7368. 

  7369. 					for (int j = 0; j < shader->functions[i].function->arguments.size(); j++) {
    7370. 

  7370. 						if (j > 0) {
    7371. 

  7371. 							calltip += ", ";
    7372. 

  7372. 						} else {
    7373. 

  7373. 							calltip += " ";
    7374. 

  7374. 						}
    7375. 

  7375. 

  7376. 						if (j == completion_argument) {
    7377. 

  7377. 							calltip += char32_t(0xFFFF);
    7378. 

  7378. 						}
    7379. 

  7379. 

  7380. 						if (shader->functions[i].function->arguments[j].is_const) {
    7381. 

  7381. 							calltip += "const ";
    7382. 

  7382. 						}
    7383. 

  7383. 

  7384. 						if (shader->functions[i].function->arguments[j].qualifier != ArgumentQualifier::ARGUMENT_QUALIFIER_IN) {
    7385. 

  7385. 							if (shader->functions[i].function->arguments[j].qualifier == ArgumentQualifier::ARGUMENT_QUALIFIER_OUT) {
    7386. 

  7386. 								calltip += "out ";
    7387. 

  7387. 							} else { // ArgumentQualifier::ARGUMENT_QUALIFIER_INOUT
    7388. 

  7388. 								calltip += "inout ";
    7389. 

  7389. 							}
    7390. 

  7390. 						}
    7391. 

  7391. 

  7392. 						calltip += get_datatype_name(shader->functions[i].function->arguments[j].type);
    7393. 

  7393. 						calltip += " ";
    7394. 

  7394. 						calltip += shader->functions[i].function->arguments[j].name;
    7395. 

  7395. 

  7396. 						if (j == completion_argument) {
    7397. 

  7397. 							calltip += char32_t(0xFFFF);
    7398. 

  7398. 						}
    7399. 

  7399. 					}
    7400. 

  7400. 

  7401. 					if (shader->functions[i].function->arguments.size()) {
    7402. 

  7402. 						calltip += " ";
    7403. 

  7403. 					}
    7404. 

  7404. 					calltip += ")";
    7405. 

  7405. 

  7406. 					r_call_hint = calltip;
    7407. 

  7407. 					return OK;
    7408. 

  7408. 				}
    7409. 

  7409. 			}
    7410. 

  7410. 

  7411. 			int idx = 0;
    7412. 

  7412. 

  7413. 			String calltip;
    7414. 

  7414. 			bool low_end = RenderingServer::get_singleton()->is_low_end();
    7415. 

  7415. 

  7416. 			while (builtin_func_defs[idx].name) {
    7417. 

  7417. 				if (low_end && builtin_func_defs[idx].high_end) {
    7418. 

  7418. 					idx++;
    7419. 

  7419. 					continue;
    7420. 

  7420. 				}
    7421. 

  7421. 

  7422. 				int idx2 = 0;
    7423. 

  7423. 				int out_arg = -1;
    7424. 

  7424. 				while (builtin_func_out_args[idx2].name != nullptr) {
    7425. 

  7425. 					if (builtin_func_out_args[idx2].name == builtin_func_defs[idx].name) {
    7426. 

  7426. 						out_arg = builtin_func_out_args[idx2].argument;
    7427. 

  7427. 						break;
    7428. 

  7428. 					}
    7429. 

  7429. 					idx2++;
    7430. 

  7430. 				}
    7431. 

  7431. 

  7432. 				if (completion_function == builtin_func_defs[idx].name) {
    7433. 

  7433. 					if (builtin_func_defs[idx].tag != completion_class) {
    7434. 

  7434. 						idx++;
    7435. 

  7435. 						continue;
    7436. 

  7436. 					}
    7437. 

  7437. 

  7438. 					if (calltip.length()) {
    7439. 

  7439. 						calltip += "\n";
    7440. 

  7440. 					}
    7441. 

  7441. 

  7442. 					calltip += get_datatype_name(builtin_func_defs[idx].rettype);
    7443. 

  7443. 					calltip += " ";
    7444. 

  7444. 					calltip += builtin_func_defs[idx].name;
    7445. 

  7445. 					calltip += "(";
    7446. 

  7446. 

  7447. 					bool found_arg = false;
    7448. 

  7448. 					for (int i = 0; i < 4; i++) {
    7449. 

  7449. 						if (builtin_func_defs[idx].args[i] == TYPE_VOID) {
    7450. 

  7450. 							break;
    7451. 

  7451. 						}
    7452. 

  7452. 

  7453. 						if (i > 0) {
    7454. 

  7454. 							calltip += ", ";
    7455. 

  7455. 						} else {
    7456. 

  7456. 							calltip += " ";
    7457. 

  7457. 						}
    7458. 

  7458. 

  7459. 						if (i == completion_argument) {
    7460. 

  7460. 							calltip += char32_t(0xFFFF);
    7461. 

  7461. 						}
    7462. 

  7462. 

  7463. 						if (out_arg >= 0 && i == out_arg) {
    7464. 

  7464. 							calltip += "out ";
    7465. 

  7465. 						}
    7466. 

  7466. 

  7467. 						calltip += get_datatype_name(builtin_func_defs[idx].args[i]);
    7468. 

  7468. 

  7469. 						if (i == completion_argument) {
    7470. 

  7470. 							calltip += char32_t(0xFFFF);
    7471. 

  7471. 						}
    7472. 

  7472. 

  7473. 						found_arg = true;
    7474. 

  7474. 					}
    7475. 

  7475. 

  7476. 					if (found_arg) {
    7477. 

  7477. 						calltip += " ";
    7478. 

  7478. 					}
    7479. 

  7479. 					calltip += ")";
    7480. 

  7480. 				}
    7481. 

  7481. 				idx++;
    7482. 

  7482. 			}
    7483. 

  7483. 

  7484. 			r_call_hint = calltip;
    7485. 

  7485. 

  7486. 			return OK;
    7487. 

  7487. 

  7488. 		} break;
    7489. 

  7489. 		case COMPLETION_INDEX: {
    7490. 

  7490. 			const char colv[4] = { 'r', 'g', 'b', 'a' };
    7491. 

  7491. 			const char coordv[4] = { 'x', 'y', 'z', 'w' };
    7492. 

  7492. 			const char coordt[4] = { 's', 't', 'p', 'q' };
    7493. 

  7493. 

  7494. 			int limit = 0;
    7495. 

  7495. 

  7496. 			switch (completion_base) {
    7497. 

  7497. 				case TYPE_BVEC2:
    7498. 

  7498. 				case TYPE_IVEC2:
    7499. 

  7499. 				case TYPE_UVEC2:
    7500. 

  7500. 				case TYPE_VEC2: {
    7501. 

  7501. 					limit = 2;
    7502. 

  7502. 

  7503. 				} break;
    7504. 

  7504. 				case TYPE_BVEC3:
    7505. 

  7505. 				case TYPE_IVEC3:
    7506. 

  7506. 				case TYPE_UVEC3:
    7507. 

  7507. 				case TYPE_VEC3: {
    7508. 

  7508. 					limit = 3;
    7509. 

  7509. 

  7510. 				} break;
    7511. 

  7511. 				case TYPE_BVEC4:
    7512. 

  7512. 				case TYPE_IVEC4:
    7513. 

  7513. 				case TYPE_UVEC4:
    7514. 

  7514. 				case TYPE_VEC4: {
    7515. 

  7515. 					limit = 4;
    7516. 

  7516. 

  7517. 				} break;
    7518. 

  7518. 				case TYPE_MAT2:
    7519. 

  7519. 					limit = 2;
    7520. 

  7520. 					break;
    7521. 

  7521. 				case TYPE_MAT3:
    7522. 

  7522. 					limit = 3;
    7523. 

  7523. 					break;
    7524. 

  7524. 				case TYPE_MAT4:
    7525. 

  7525. 					limit = 4;
    7526. 

  7526. 					break;
    7527. 

  7527. 				default: {
    7528. 

  7528. 				}
    7529. 

  7529. 			}
    7530. 

  7530. 

  7531. 			for (int i = 0; i < limit; i++) {
    7532. 

  7532. 				r_options->push_back(ScriptCodeCompletionOption(String::chr(colv[i]), ScriptCodeCompletionOption::KIND_PLAIN_TEXT));
    7533. 

  7533. 				r_options->push_back(ScriptCodeCompletionOption(String::chr(coordv[i]), ScriptCodeCompletionOption::KIND_PLAIN_TEXT));
    7534. 

  7534. 				r_options->push_back(ScriptCodeCompletionOption(String::chr(coordt[i]), ScriptCodeCompletionOption::KIND_PLAIN_TEXT));
    7535. 

  7535. 			}
    7536. 

  7536. 

  7537. 		} break;
    7538. 

  7538. 	}
    7539. 

  7539. 

  7540. 	return ERR_PARSE_ERROR;
    7541. 

  7541. }
    7542. 

  7542. 

  7543. String ShaderLanguage::get_error_text() {
    7544. 

  7544. 	return error_str;
    7545. 

  7545. }
    7546. 

  7546. 

  7547. int ShaderLanguage::get_error_line() {
    7548. 

  7548. 	return error_line;
    7549. 

  7549. }
    7550. 

  7550. 

  7551. ShaderLanguage::ShaderNode *ShaderLanguage::get_shader() {
    7552. 

  7552. 	return shader;
    7553. 

  7553. }
    7554. 

  7554. 

  7555. ShaderLanguage::ShaderLanguage() {
    7556. 

  7556. 	nodes = nullptr;
    7557. 

  7557. 	completion_class = TAG_GLOBAL;
    7558. 

  7558. }
    7559. 

  7559. 

  7560. ShaderLanguage::~ShaderLanguage() {
    7561. 

  7561. 	clear();
    7562. 

  7562. }
    7563.