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When targeting SPIR-V 1.5, using gl_ViewportIndex will emit OpCapability ShaderViewportIndex and using gl_Layer will emit OpCapability CapabilityShaderLayer. OpCapability ShaderViewportIndexLayerEXT will only get emitted if the target < SPIR-V 1.5

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This commit is contained in:
Sidney Just 2020-10-22 15:04:19 -07:00
parent 3b334b2b8e
commit 670536b663
2 changed files with 12 additions and 5 deletions
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15
SPIRV/GlslangToSpv.cpp
View File

@ -714,8 +714,12 @@ spv::BuiltIn TGlslangToSpvTraverser::TranslateBuiltInDecoration(glslang::TBuiltI
glslangIntermediate->getStage() == EShLangTessControl ||
glslangIntermediate->getStage() == EShLangTessEvaluation) {
builder.addIncorporatedExtension(spv::E_SPV_EXT_shader_viewport_index_layer, spv::Spv_1_5);
builder.addCapability(spv::CapabilityShaderViewportIndexLayerEXT);
if (builder.getSpvVersion() < spv::Spv_1_5) {
builder.addIncorporatedExtension(spv::E_SPV_EXT_shader_viewport_index_layer, spv::Spv_1_5);
builder.addCapability(spv::CapabilityShaderViewportIndexLayerEXT);
}
else
builder.addCapability(spv::CapabilityShaderViewportIndex);
}
return spv::BuiltInViewportIndex;
@ -739,8 +743,11 @@ spv::BuiltIn TGlslangToSpvTraverser::TranslateBuiltInDecoration(glslang::TBuiltI
glslangIntermediate->getStage() == EShLangTessControl ||
glslangIntermediate->getStage() == EShLangTessEvaluation) {
builder.addIncorporatedExtension(spv::E_SPV_EXT_shader_viewport_index_layer, spv::Spv_1_5);
builder.addCapability(spv::CapabilityShaderViewportIndexLayerEXT);
if (builder.getSpvVersion() < spv::Spv_1_5) {
builder.addIncorporatedExtension(spv::E_SPV_EXT_shader_viewport_index_layer, spv::Spv_1_5);
builder.addCapability(spv::CapabilityShaderViewportIndexLayerEXT);
} else
builder.addCapability(spv::CapabilityShaderLayer);
}
return spv::BuiltInLayer;

2
glslang/MachineIndependent/Initialize.cpp
View File

@ -7548,7 +7548,7 @@ void TBuiltIns::identifyBuiltIns(int version, EProfile profile, const SpvVersion
BuiltInVariable("gl_Layer", EbvLayer, symbolTable);
BuiltInVariable("gl_ViewportIndex", EbvViewportIndex, symbolTable);
if (language != EShLangGeometry) {
if (language != EShLangGeometry && spvVersion.spv < glslang::EShTargetSpv_1_5) {
symbolTable.setVariableExtensions("gl_Layer", Num_viewportEXTs, viewportEXTs);
symbolTable.setVariableExtensions("gl_ViewportIndex", Num_viewportEXTs, viewportEXTs);
}