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swiftshader
Commit 583f6425 by Chris Forbes
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Add support for spv::BuiltInSampleMask output

The mask output from the shader is ANDed with the coverage. Slight wrinkle here in that we have a 4 bit mask of samples in each lane, but we want to transpose to a 4 bit mask of lane coverage per sample. Test: dEQP-VK.renderpass.*.multisample.* Bug: b/118386749 Change-Id: Id4d60bef71cd179915db424aa94a9d9728fb42cd Reviewed-on: https://swiftshader-review.googlesource.com/c/SwiftShader/+/30552Tested-by: 's avatarChris Forbes <chrisforbes@google.com> Reviewed-by: 's avatarNicolas Capens <nicolascapens@google.com>
parent e2535df1
Showing with 11 additions and 0 deletions
src/Pipeline/PixelProgram.cpp
......@@ -93,6 +93,17 @@ namespace sw
}
}
it = spirvShader->outputBuiltins.find(spv::BuiltInSampleMask);
if (it != spirvShader->outputBuiltins.end())
{
auto outputSampleMask = As<SIMD::Int>(routine.getVariable(it->second.Id)[it->second.FirstComponent]);
for (auto i = 0u; i < state.multiSample; i++)
{
cMask[i] &= SignMask(CmpNEQ(outputSampleMask & SIMD::Int(1<<i), SIMD::Int(0)));
}
}
it = spirvShader->outputBuiltins.find(spv::BuiltInFragDepth);
if (it != spirvShader->outputBuiltins.end())
{
......
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