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Fix SPIR-V for HLSL EvaluateAttribute* of interpolants in structs

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Generate load of interpolant for first operand to GLSLstd450
InterpolateAt* SPIR-V ops. This allows the interpolants to
propagate from the input struct in the wrapper around main
into the shader during HLSL legalization. A new pass has been
added to legalization which will remove the load and replace
with the pointer of the load to create valid external
interpolate op.

Fixes #2584
This commit is contained in:
Greg Fischer 2021-03-31 15:24:48 -06:00
parent 6dc24ffa47
commit 7fbaca0d06
8 changed files with 163 additions and 305 deletions
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SPIRV/SpvTools.cpp
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@ -207,6 +207,7 @@ void SpirvToolsTransform(const glslang::TIntermediate& intermediate, std::vector
optimizer.RegisterPass(spvtools::CreateAggressiveDCEPass());
optimizer.RegisterPass(spvtools::CreateVectorDCEPass());
optimizer.RegisterPass(spvtools::CreateDeadInsertElimPass());
optimizer.RegisterPass(spvtools::CreateInterpolateFixupPass());
if (options->optimizeSize) {
optimizer.RegisterPass(spvtools::CreateRedundancyEliminationPass());
}