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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);
}
}
}

2
glslang/MachineIndependent/Versions.cpp
View file

@ -192,6 +192,7 @@ void TParseVersions::initializeExtensionBehavior()
extensionBehavior[E_GL_ARB_shader_viewport_layer_array] = EBhDisable;
extensionBehavior[E_GL_ARB_fragment_shader_interlock] = EBhDisable;
extensionBehavior[E_GL_ARB_shader_clock] = EBhDisable;
extensionBehavior[E_GL_ARB_sample_shading] = EBhDisable;
extensionBehavior[E_GL_KHR_shader_subgroup_basic] = EBhDisable;
extensionBehavior[E_GL_KHR_shader_subgroup_vote] = EBhDisable;
@ -394,6 +395,7 @@ void TParseVersions::getPreamble(std::string& preamble)
"#define GL_ARB_sparse_texture2 1\n"
"#define GL_ARB_sparse_texture_clamp 1\n"
"#define GL_ARB_shader_stencil_export 1\n"
"#define GL_ARB_sample_shading 1\n"
// "#define GL_ARB_cull_distance 1\n" // present for 4.5, but need extension control over block members
"#define GL_ARB_post_depth_coverage 1\n"
"#define GL_ARB_fragment_shader_interlock 1\n"

1
glslang/MachineIndependent/Versions.h
View file

@ -144,6 +144,7 @@ const char* const E_GL_ARB_post_depth_coverage = "GL_ARB_post_depth_cov
const char* const E_GL_ARB_shader_viewport_layer_array = "GL_ARB_shader_viewport_layer_array";
const char* const E_GL_ARB_fragment_shader_interlock = "GL_ARB_fragment_shader_interlock";
const char* const E_GL_ARB_shader_clock = "GL_ARB_shader_clock";
const char* const E_GL_ARB_sample_shading = "GL_ARB_sample_shading";
const char* const E_GL_KHR_shader_subgroup_basic = "GL_KHR_shader_subgroup_basic";
const char* const E_GL_KHR_shader_subgroup_vote = "GL_KHR_shader_subgroup_vote";