added round function to gles2

drivers/gles2/shader_compiler_gles2.cpp

@@ -733,6 +733,17 @@ String ShaderCompilerGLES2::_dump_node_code(SL::Node *p_node, int p_level, Gener
 
 					code += ")";
 
+					if (p_default_actions.usage_defines.has(var_node->name) && !used_name_defines.has(var_node->name)) {
+						String define = p_default_actions.usage_defines[var_node->name];
+
+						if (define.begins_with("@")) {
+							define = p_default_actions.usage_defines[define.substr(1, define.length())];
+						}
+
+						r_gen_code.custom_defines.push_back(define.utf8());
+						used_name_defines.insert(var_node->name);
+					}
+
 				} break;
 
 				case SL::OP_INDEX: {
@@ -917,6 +928,7 @@ ShaderCompilerGLES2::ShaderCompilerGLES2() {
 	actions[VS::SHADER_CANVAS_ITEM].usage_defines["NORMAL"] = "#define NORMAL_USED\n";
 	actions[VS::SHADER_CANVAS_ITEM].usage_defines["NORMALMAP"] = "#define NORMALMAP_USED\n";
 	actions[VS::SHADER_CANVAS_ITEM].usage_defines["LIGHT"] = "#define USE_LIGHT_SHADER_CODE\n";
+	actions[VS::SHADER_CANVAS_ITEM].usage_defines["round"] = "#define ROUND_USED\n";
 	actions[VS::SHADER_CANVAS_ITEM].render_mode_defines["skip_vertex_transform"] = "#define SKIP_TRANSFORM_USED\n";
 
 	/** SPATIAL SHADER **/

drivers/gles2/shaders/canvas.glsl

@@ -258,6 +258,8 @@ precision mediump int;
 #endif
 #endif
 
+#include "stdlib.glsl"
+
 uniform sampler2D color_texture; // texunit:-1
 /* clang-format on */
 uniform highp vec2 color_texpixel_size;

drivers/gles2/shaders/stdlib.glsl

@@ -35,6 +35,23 @@ highp vec4 texel2DFetch(highp sampler2D tex, ivec2 size, ivec2 coord) {
 
 	return texture2DLod(tex, vec2(x_coord, y_coord), 0.0);
 }
+#ifdef ROUND_USED
+highp float round(highp float x) {
+	return floor(x + 0.5);
+}
+
+highp vec2 round(highp vec2 x) {
+	return floor(x + vec2(0.5));
+}
+
+highp vec3 round(highp vec3 x) {
+	return floor(x + vec3(0.5));
+}
+
+highp vec4 round(highp vec4 x) {
+	return floor(x + vec4(0.5));
+}
+#endif
 
 #ifndef USE_GLES_OVER_GL
 highp mat4 transpose(highp mat4 src) {

editor/plugins/visual_shader_editor_plugin.cpp

@@ -2247,7 +2247,7 @@ VisualShaderEditor::VisualShaderEditor() {
 	add_options.push_back(AddOption("Pow", "Scalar", "Functions", "VisualShaderNodeScalarOp", TTR("Returns the value of the first parameter raised to the power of the second."), VisualShaderNodeScalarOp::OP_POW, VisualShaderNode::PORT_TYPE_SCALAR));
 	add_options.push_back(AddOption("Radians", "Scalar", "Functions", "VisualShaderNodeScalarFunc", TTR("Converts a quantity in degrees to radians."), VisualShaderNodeScalarFunc::FUNC_RADIANS, VisualShaderNode::PORT_TYPE_SCALAR));
 	add_options.push_back(AddOption("Reciprocal", "Scalar", "Functions", "VisualShaderNodeScalarFunc", TTR("1.0 / scalar"), VisualShaderNodeScalarFunc::FUNC_RECIPROCAL, VisualShaderNode::PORT_TYPE_SCALAR));
-	add_options.push_back(AddOption("Round", "Scalar", "Functions", "VisualShaderNodeScalarFunc", TTR("Finds the nearest integer to the parameter."), VisualShaderNodeScalarFunc::FUNC_ROUND, VisualShaderNode::PORT_TYPE_SCALAR, -1, -1, -1, true));
+	add_options.push_back(AddOption("Round", "Scalar", "Functions", "VisualShaderNodeScalarFunc", TTR("Finds the nearest integer to the parameter."), VisualShaderNodeScalarFunc::FUNC_ROUND, VisualShaderNode::PORT_TYPE_SCALAR));
 	add_options.push_back(AddOption("RoundEven", "Scalar", "Functions", "VisualShaderNodeScalarFunc", TTR("Finds the nearest even integer to the parameter."), VisualShaderNodeScalarFunc::FUNC_ROUNDEVEN, VisualShaderNode::PORT_TYPE_SCALAR, -1, -1, -1, true));
 	add_options.push_back(AddOption("Saturate", "Scalar", "Functions", "VisualShaderNodeScalarFunc", TTR("Clamps the value between 0.0 and 1.0."), VisualShaderNodeScalarFunc::FUNC_SATURATE, VisualShaderNode::PORT_TYPE_SCALAR));
 	add_options.push_back(AddOption("Sign", "Scalar", "Functions", "VisualShaderNodeScalarFunc", TTR("Extracts the sign of the parameter."), VisualShaderNodeScalarFunc::FUNC_SIGN, VisualShaderNode::PORT_TYPE_SCALAR));
@@ -2340,7 +2340,7 @@ VisualShaderEditor::VisualShaderEditor() {
 	add_options.push_back(AddOption("Reciprocal", "Vector", "Functions", "VisualShaderNodeVectorFunc", TTR("1.0 / vector"), VisualShaderNodeVectorFunc::FUNC_RECIPROCAL, VisualShaderNode::PORT_TYPE_VECTOR));
 	add_options.push_back(AddOption("Reflect", "Vector", "Functions", "VisualShaderNodeVectorOp", TTR("Returns the vector that points in the direction of reflection ( a : incident vector, b : normal vector )."), VisualShaderNodeVectorOp::OP_REFLECT, VisualShaderNode::PORT_TYPE_VECTOR));
 	add_options.push_back(AddOption("Refract", "Vector", "Functions", "VisualShaderNodeVectorRefract", TTR("Returns the vector that points in the direction of refraction."), -1, VisualShaderNode::PORT_TYPE_VECTOR));
-	add_options.push_back(AddOption("Round", "Vector", "Functions", "VisualShaderNodeVectorFunc", TTR("Finds the nearest integer to the parameter."), VisualShaderNodeVectorFunc::FUNC_ROUND, VisualShaderNode::PORT_TYPE_VECTOR, -1, -1, -1, true));
+	add_options.push_back(AddOption("Round", "Vector", "Functions", "VisualShaderNodeVectorFunc", TTR("Finds the nearest integer to the parameter."), VisualShaderNodeVectorFunc::FUNC_ROUND, VisualShaderNode::PORT_TYPE_VECTOR));
 	add_options.push_back(AddOption("RoundEven", "Vector", "Functions", "VisualShaderNodeVectorFunc", TTR("Finds the nearest even integer to the parameter."), VisualShaderNodeVectorFunc::FUNC_ROUNDEVEN, VisualShaderNode::PORT_TYPE_VECTOR, -1, -1, -1, true));
 	add_options.push_back(AddOption("Saturate", "Vector", "Functions", "VisualShaderNodeVectorFunc", TTR("Clamps the value between 0.0 and 1.0."), VisualShaderNodeVectorFunc::FUNC_SATURATE, VisualShaderNode::PORT_TYPE_VECTOR));
 	add_options.push_back(AddOption("Sign", "Vector", "Functions", "VisualShaderNodeVectorFunc", TTR("Extracts the sign of the parameter."), VisualShaderNodeVectorFunc::FUNC_SIGN, VisualShaderNode::PORT_TYPE_VECTOR));