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Backported: Backport spatial shader built-ins

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Backport of this PR: godotengine#63597
This adds these as new Built-Ins to Spatial Shaders
* Object's Position in World Space
* Camera Position in World Space
* Camera Direction in World Space
* Object's Position in View Space
- paddy-exe
be3d331f26
This commit is contained in:
Relintai 2023-06-11 09:37:10 +02:00
parent 2b79cd7446
commit 552226ab5d
2 changed files with 12 additions and 0 deletions
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4
drivers/gles2/shader_compiler_gles2.cpp
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@ -1158,6 +1158,10 @@ ShaderCompilerGLES2::ShaderCompilerGLES2() {
//actions[RS::SHADER_SPATIAL].renames["DEPTH"] = "gl_FragDepth";
actions[RS::SHADER_SPATIAL].renames["ALPHA_SCISSOR"] = "alpha_scissor";
actions[RS::SHADER_SPATIAL].renames["OUTPUT_IS_SRGB"] = "SHADER_IS_SRGB";
actions[RS::SHADER_SPATIAL].renames["NODE_POSITION_WORLD"] = "world_transform[3].xyz";
actions[RS::SHADER_SPATIAL].renames["CAMERA_POSITION_WORLD"] = "camera_matrix[3].xyz";
actions[RS::SHADER_SPATIAL].renames["CAMERA_DIRECTION_WORLD"] = "camera_inverse_matrix[3].xyz";
actions[RS::SHADER_SPATIAL].renames["NODE_POSITION_VIEW"] = "(world_transform * camera_inverse_matrix)[3].xyz";
//for light
actions[RS::SHADER_SPATIAL].renames["VIEW"] = "view";

8
servers/rendering/shader_types.cpp
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@ -81,6 +81,10 @@ ShaderTypes::ShaderTypes() {
shader_modes[RS::SHADER_SPATIAL].functions["vertex"].built_ins["VIEW_RIGHT"] = constt(ShaderLanguage::TYPE_INT);
shader_modes[RS::SHADER_SPATIAL].functions["vertex"].built_ins["VIEWPORT_SIZE"] = constt(ShaderLanguage::TYPE_VEC2);
shader_modes[RS::SHADER_SPATIAL].functions["vertex"].built_ins["OUTPUT_IS_SRGB"] = constt(ShaderLanguage::TYPE_BOOL);
shader_modes[RS::SHADER_SPATIAL].functions["vertex"].built_ins["NODE_POSITION_WORLD"] = ShaderLanguage::TYPE_VEC3;
shader_modes[RS::SHADER_SPATIAL].functions["vertex"].built_ins["CAMERA_POSITION_WORLD"] = ShaderLanguage::TYPE_VEC3;
shader_modes[RS::SHADER_SPATIAL].functions["vertex"].built_ins["CAMERA_DIRECTION_WORLD"] = ShaderLanguage::TYPE_VEC3;
shader_modes[RS::SHADER_SPATIAL].functions["vertex"].built_ins["NODE_POSITION_VIEW"] = ShaderLanguage::TYPE_VEC3;
shader_modes[RS::SHADER_SPATIAL].functions["vertex"].main_function = true;
shader_modes[RS::SHADER_SPATIAL].functions["fragment"].built_ins["VERTEX"] = constt(ShaderLanguage::TYPE_VEC3);
@ -129,6 +133,10 @@ ShaderTypes::ShaderTypes() {
shader_modes[RS::SHADER_SPATIAL].functions["fragment"].built_ins["PROJECTION_MATRIX"] = constt(ShaderLanguage::TYPE_MAT4);
shader_modes[RS::SHADER_SPATIAL].functions["fragment"].built_ins["INV_PROJECTION_MATRIX"] = constt(ShaderLanguage::TYPE_MAT4);
shader_modes[RS::SHADER_SPATIAL].functions["fragment"].built_ins["VIEWPORT_SIZE"] = constt(ShaderLanguage::TYPE_VEC2);
shader_modes[RS::SHADER_SPATIAL].functions["fragment"].built_ins["NODE_POSITION_WORLD"] = ShaderLanguage::TYPE_VEC3;
shader_modes[RS::SHADER_SPATIAL].functions["fragment"].built_ins["CAMERA_POSITION_WORLD"] = ShaderLanguage::TYPE_VEC3;
shader_modes[RS::SHADER_SPATIAL].functions["fragment"].built_ins["CAMERA_DIRECTION_WORLD"] = ShaderLanguage::TYPE_VEC3;
shader_modes[RS::SHADER_SPATIAL].functions["fragment"].built_ins["NODE_POSITION_VIEW"] = ShaderLanguage::TYPE_VEC3;
shader_modes[RS::SHADER_SPATIAL].functions["fragment"].can_discard = true;
shader_modes[RS::SHADER_SPATIAL].functions["fragment"].main_function = true;