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Add support for ARB_sample_shading

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Version : >= 130

Extension Name: ARB_sample_shading

Builtin-variables:
"gl_SampleID"
"gl_SamplePosition"
"gl_SampleMask"
"gl_NumSamples"

Reference:
https://www.khronos.org/registry/OpenGL/extensions/ARB/ARB_sample_shading.txt
This commit is contained in:
Chow 2019-11-26 16:18:52 +08:00
parent bd97b6f9f2
commit 78b1180466
5 changed files with 270 additions and 236 deletions
Download patch file Download diff file Expand all files Collapse all files

47
glslang/MachineIndependent/Initialize.cpp
View file

@ -5178,19 +5178,25 @@ void TBuiltIns::initialize(int version, EProfile profile, const SpvVersion& spvV
"flat in int gl_PrimitiveID;"
);
if (version >= 400) {
if (version >= 130) { // ARB_sample_shading
stageBuiltins[EShLangFragment].append(
"flat in int gl_SampleID;"
" in vec2 gl_SamplePosition;"
"flat in int gl_SampleMaskIn[];"
" out int gl_SampleMask[];"
);
if (spvVersion.spv == 0)
if (spvVersion.spv == 0) {
stageBuiltins[EShLangFragment].append(
"uniform int gl_NumSamples;"
);
);
}
}
if (version >= 400)
stageBuiltins[EShLangFragment].append(
"flat in int gl_SampleMaskIn[];"
);
if (version >= 430)
stageBuiltins[EShLangFragment].append(
"flat in int gl_Layer;"
@ -7422,18 +7428,29 @@ void TBuiltIns::identifyBuiltIns(int version, EProfile profile, const SpvVersion
BuiltInVariable("gl_FragStencilRefARB", EbvFragStencilRef, symbolTable);
}
if ((profile != EEsProfile && version >= 400) ||
if ((profile != EEsProfile && version >= 130) ||
(profile == EEsProfile && version >= 310)) {
BuiltInVariable("gl_SampleID", EbvSampleId, symbolTable);
BuiltInVariable("gl_SamplePosition", EbvSamplePosition, symbolTable);
BuiltInVariable("gl_SampleMaskIn", EbvSampleMask, symbolTable);
BuiltInVariable("gl_SampleMask", EbvSampleMask, symbolTable);
if (profile == EEsProfile && version < 320) {
symbolTable.setVariableExtensions("gl_SampleID", 1, &E_GL_OES_sample_variables);
symbolTable.setVariableExtensions("gl_SamplePosition", 1, &E_GL_OES_sample_variables);
symbolTable.setVariableExtensions("gl_SampleMaskIn", 1, &E_GL_OES_sample_variables);
symbolTable.setVariableExtensions("gl_SampleMask", 1, &E_GL_OES_sample_variables);
symbolTable.setVariableExtensions("gl_NumSamples", 1, &E_GL_OES_sample_variables);
BuiltInVariable("gl_SampleID", EbvSampleId, symbolTable);
BuiltInVariable("gl_SamplePosition", EbvSamplePosition, symbolTable);
BuiltInVariable("gl_SampleMask", EbvSampleMask, symbolTable);
if (profile != EEsProfile && version < 400) {
BuiltInVariable("gl_NumSamples", EbvSampleMask, symbolTable);
symbolTable.setVariableExtensions("gl_SampleMask", 1, &E_GL_ARB_sample_shading);
symbolTable.setVariableExtensions("gl_SampleID", 1, &E_GL_ARB_sample_shading);
symbolTable.setVariableExtensions("gl_SamplePosition", 1, &E_GL_ARB_sample_shading);
symbolTable.setVariableExtensions("gl_NumSamples", 1, &E_GL_ARB_sample_shading);
} else {
BuiltInVariable("gl_SampleMaskIn", EbvSampleMask, symbolTable);
if (profile == EEsProfile && version < 320) {
symbolTable.setVariableExtensions("gl_SampleID", 1, &E_GL_OES_sample_variables);
symbolTable.setVariableExtensions("gl_SamplePosition", 1, &E_GL_OES_sample_variables);
symbolTable.setVariableExtensions("gl_SampleMaskIn", 1, &E_GL_OES_sample_variables);
symbolTable.setVariableExtensions("gl_SampleMask", 1, &E_GL_OES_sample_variables);
symbolTable.setVariableExtensions("gl_NumSamples", 1, &E_GL_OES_sample_variables);
}
}
}