Merge pull request #9109 from RandomShaper/optimize-2d-lighting

Add AT_LIGHT_PASS builtin to canvas shaders

drivers/gles3/rasterizer_storage_gles3.h

@@ -448,6 +448,7 @@ public:
 			: dirty_list(this) {
 
 			shader = NULL;
+			ubo_size = 0;
 			valid = false;
 			custom_code_id = 0;
 			version = 1;

drivers/gles3/shader_compiler_gles3.cpp

@@ -668,6 +668,7 @@ ShaderCompilerGLES3::ShaderCompilerGLES3() {
 	actions[VS::SHADER_CANVAS_ITEM].renames["PROJECTION_MATRIX"] = "projection_matrix";
 	actions[VS::SHADER_CANVAS_ITEM].renames["EXTRA_MATRIX"] == "extra_matrix";
 	actions[VS::SHADER_CANVAS_ITEM].renames["TIME"] = "time";
+	actions[VS::SHADER_CANVAS_ITEM].renames["AT_LIGHT_PASS"] = "at_light_pass";
 
 	actions[VS::SHADER_CANVAS_ITEM].renames["COLOR"] = "color";
 	actions[VS::SHADER_CANVAS_ITEM].renames["NORMAL"] = "normal";

drivers/gles3/shaders/canvas.glsl

@@ -59,6 +59,9 @@ out vec4 local_rot;
 out highp vec2 pos;
 #endif
 
+const bool at_light_pass = true;
+#else
+const bool at_light_pass = false;
 #endif
 
 
@@ -191,6 +194,9 @@ in highp vec2 pos;
 
 #endif
 
+const bool at_light_pass = true;
+#else
+const bool at_light_pass = false;
 #endif
 
 uniform mediump vec4 final_modulate;

servers/visual/shader_types.cpp

@@ -153,6 +153,7 @@ ShaderTypes::ShaderTypes() {
 	shader_modes[VS::SHADER_CANVAS_ITEM].functions["vertex"]["EXTRA_MATRIX"] = ShaderLanguage::TYPE_MAT4;
 	shader_modes[VS::SHADER_CANVAS_ITEM].functions["vertex"]["TIME"] = ShaderLanguage::TYPE_FLOAT;
 	shader_modes[VS::SHADER_CANVAS_ITEM].functions["vertex"]["PARTICLE_CUSTOM"] = ShaderLanguage::TYPE_VEC4;
+	shader_modes[VS::SHADER_CANVAS_ITEM].functions["vertex"]["AT_LIGHT_PASS"] = ShaderLanguage::TYPE_BOOL;
 
 	shader_modes[VS::SHADER_CANVAS_ITEM].functions["fragment"]["SRC_COLOR"] = ShaderLanguage::TYPE_VEC4;
 	shader_modes[VS::SHADER_CANVAS_ITEM].functions["fragment"]["POSITION"] = ShaderLanguage::TYPE_VEC2;
@@ -166,6 +167,7 @@ ShaderTypes::ShaderTypes() {
 	shader_modes[VS::SHADER_CANVAS_ITEM].functions["fragment"]["SCREEN_UV"] = ShaderLanguage::TYPE_VEC2;
 	shader_modes[VS::SHADER_CANVAS_ITEM].functions["fragment"]["POINT_COORD"] = ShaderLanguage::TYPE_VEC2;
 	shader_modes[VS::SHADER_CANVAS_ITEM].functions["fragment"]["TIME"] = ShaderLanguage::TYPE_FLOAT;
+	shader_modes[VS::SHADER_CANVAS_ITEM].functions["fragment"]["AT_LIGHT_PASS"] = ShaderLanguage::TYPE_BOOL;
 
 	shader_modes[VS::SHADER_CANVAS_ITEM].functions["light"]["POSITION"] = ShaderLanguage::TYPE_VEC2;
 	shader_modes[VS::SHADER_CANVAS_ITEM].functions["light"]["NORMAL"] = ShaderLanguage::TYPE_VEC3;