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Merge pull request #2126 from aitor-lunarg/fix-va-translate

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Fix translation of fully remapped multi vertex attribute bindings
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Bill Hollings 2024-01-16 02:51:10 -05:00 committed by GitHub
commit c4f90e84b2
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2 changed files with 4 additions and 2 deletions
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1
MoltenVK/MoltenVK/GPUObjects/MVKPipeline.h
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@ -206,6 +206,7 @@ struct MVKTranslatedVertexBinding {
uint16_t binding;
uint16_t translationBinding;
uint32_t translationOffset;
uint32_t mappedAttributeCount;
};
/** Describes a vertex buffer binding whose divisor is zero. */

5
MoltenVK/MoltenVK/GPUObjects/MVKPipeline.mm
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@ -1491,7 +1491,7 @@ bool MVKGraphicsPipeline::addVertexInputToPipeline(T* inputDesc,
vbXltdDesc.stride = vbDesc.stride;
vbXltdDesc.stepFunction = vbDesc.stepFunction;
vbXltdDesc.stepRate = vbDesc.stepRate;
xldtVACnt++;
xldtVACnt += xltdBind.mappedAttributeCount;
}
}
@ -1533,13 +1533,14 @@ uint32_t MVKGraphicsPipeline::getTranslatedVertexBinding(uint32_t binding, uint3
// See if a translated binding already exists (for example if more than one VA needs the same translation).
for (auto& xltdBind : _translatedVertexBindings) {
if (xltdBind.binding == binding && xltdBind.translationOffset == translationOffset) {
xltdBind.mappedAttributeCount++;
return xltdBind.translationBinding;
}
}
// Get next available binding point and add a translation binding description for it
uint16_t xltdBindPt = (uint16_t)(maxBinding + _translatedVertexBindings.size() + 1);
_translatedVertexBindings.push_back( {.binding = (uint16_t)binding, .translationBinding = xltdBindPt, .translationOffset = translationOffset} );
_translatedVertexBindings.push_back( {.binding = (uint16_t)binding, .translationBinding = xltdBindPt, .translationOffset = translationOffset, .mappedAttributeCount = 1u} );
return xltdBindPt;
}