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Add support for spirv1.6

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Add command line support which enables the following behavior:

- Remap discard

  Map discard to DemoteToHelperInvocation for HLSL shaders. Map to
  OpTerminateInvocation for GLSL shaders.

- Decorate HelperInvocation with Volatile

- Use localSizeId for execution mode

  WorkGroupSize is deprecated in spirv1.6

Also update known goods to SPIRV 1.6
This commit is contained in:
Greg Fischer
2021-09-02 17:37:39 -06:00
parent a0f98ad401
commit 7a49192d23
19 changed files with 556 additions and 218 deletions
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60
SPIRV/GlslangToSpv.cpp
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@@ -1664,9 +1664,22 @@ TGlslangToSpvTraverser::TGlslangToSpvTraverser(unsigned int spvVersion,
case EShLangCompute:
builder.addCapability(spv::CapabilityShader);
builder.addExecutionMode(shaderEntry, spv::ExecutionModeLocalSize, glslangIntermediate->getLocalSize(0),
glslangIntermediate->getLocalSize(1),
glslangIntermediate->getLocalSize(2));
if (glslangIntermediate->getSpv().spv >= glslang::EShTargetSpv_1_6) {
std::vector<spv::Id> dimConstId;
for (int dim = 0; dim < 3; ++dim) {
bool specConst = (glslangIntermediate->getLocalSizeSpecId(dim) != glslang::TQualifier::layoutNotSet);
dimConstId.push_back(builder.makeUintConstant(glslangIntermediate->getLocalSize(dim), specConst));
if (specConst) {
builder.addDecoration(dimConstId.back(), spv::DecorationSpecId,
glslangIntermediate->getLocalSizeSpecId(dim));
}
}
builder.addExecutionModeId(shaderEntry, spv::ExecutionModeLocalSizeId, dimConstId);
} else {
builder.addExecutionMode(shaderEntry, spv::ExecutionModeLocalSize, glslangIntermediate->getLocalSize(0),
glslangIntermediate->getLocalSize(1),
glslangIntermediate->getLocalSize(2));
}
if (glslangIntermediate->getLayoutDerivativeModeNone() == glslang::LayoutDerivativeGroupQuads) {
builder.addCapability(spv::CapabilityComputeDerivativeGroupQuadsNV);
builder.addExecutionMode(shaderEntry, spv::ExecutionModeDerivativeGroupQuadsNV);
@@ -1770,9 +1783,22 @@ TGlslangToSpvTraverser::TGlslangToSpvTraverser(unsigned int spvVersion,
case EShLangMeshNV:
builder.addCapability(spv::CapabilityMeshShadingNV);
builder.addExtension(spv::E_SPV_NV_mesh_shader);
builder.addExecutionMode(shaderEntry, spv::ExecutionModeLocalSize, glslangIntermediate->getLocalSize(0),
glslangIntermediate->getLocalSize(1),
glslangIntermediate->getLocalSize(2));
if (glslangIntermediate->getSpv().spv >= glslang::EShTargetSpv_1_6) {
std::vector<spv::Id> dimConstId;
for (int dim = 0; dim < 3; ++dim) {
bool specConst = (glslangIntermediate->getLocalSizeSpecId(dim) != glslang::TQualifier::layoutNotSet);
dimConstId.push_back(builder.makeUintConstant(glslangIntermediate->getLocalSize(dim), specConst));
if (specConst) {
builder.addDecoration(dimConstId.back(), spv::DecorationSpecId,
glslangIntermediate->getLocalSizeSpecId(dim));
}
}
builder.addExecutionModeId(shaderEntry, spv::ExecutionModeLocalSizeId, dimConstId);
} else {
builder.addExecutionMode(shaderEntry, spv::ExecutionModeLocalSize, glslangIntermediate->getLocalSize(0),
glslangIntermediate->getLocalSize(1),
glslangIntermediate->getLocalSize(2));
}
if (glslangIntermediate->getStage() == EShLangMeshNV) {
builder.addExecutionMode(shaderEntry, spv::ExecutionModeOutputVertices,
glslangIntermediate->getVertices());
@@ -3779,7 +3805,16 @@ bool TGlslangToSpvTraverser::visitBranch(glslang::TVisit /* visit */, glslang::T
switch (node->getFlowOp()) {
case glslang::EOpKill:
builder.makeStatementTerminator(spv::OpKill, "post-discard");
if (glslangIntermediate->getSpv().spv >= glslang::EShTargetSpv_1_6) {
if (glslangIntermediate->getSource() == glslang::EShSourceHlsl) {
builder.addCapability(spv::CapabilityDemoteToHelperInvocation);
builder.createNoResultOp(spv::OpDemoteToHelperInvocationEXT);
} else {
builder.makeStatementTerminator(spv::OpTerminateInvocation, "post-terminate-invocation");
}
} else {
builder.makeStatementTerminator(spv::OpKill, "post-discard");
}
break;
case glslang::EOpTerminateInvocation:
builder.addExtension(spv::E_SPV_KHR_terminate_invocation);
@@ -8761,7 +8796,16 @@ spv::Id TGlslangToSpvTraverser::getSymbolId(const glslang::TIntermSymbol* symbol
// add built-in variable decoration
if (builtIn != spv::BuiltInMax) {
builder.addDecoration(id, spv::DecorationBuiltIn, (int)builtIn);
// WorkgroupSize deprecated in spirv1.6
if (glslangIntermediate->getSpv().spv < glslang::EShTargetSpv_1_6 ||
builtIn != spv::BuiltInWorkgroupSize)
builder.addDecoration(id, spv::DecorationBuiltIn, (int)builtIn);
}
// Add volatile decoration to HelperInvocation for spirv1.6 and beyond
if (builtIn == spv::BuiltInHelperInvocation &&
glslangIntermediate->getSpv().spv >= glslang::EShTargetSpv_1_6) {
builder.addDecoration(id, spv::DecorationVolatile);
}
#ifndef GLSLANG_WEB