================
@@ -172,6 +172,23 @@ Decl *SemaHLSL::ActOnStartBuffer(Scope *BufferScope, bool
CBuffer,
return Result;
}
+static unsigned calculateLegacyCbufferFieldAlign(const ASTContext &Context,
+ QualType T) {
+ // Arrays and Structs are always aligned to new buffer rows
+ if (T->isArrayType() || T->isStructureType())
+ return 16;
+
+ // Vectors are aligned to the type they contain
+ if (const VectorType *VT = T->getAs<VectorType>())
+ return calculateLegacyCbufferFieldAlign(Context, VT->getElementType());
----------------
tex3d wrote:
This test would have had no difference with the change you made. It would have
looked the same as two 64-bit values, with the same locations. I think you'll
need something like this:
```hlsl
struct S6 {
float a;
float2 b;
};
cbuffer CB6Pass {
S6 s6p : packoffset(c0.x);
float f6p : packoffset(c0.w);
}
```
https://github.com/llvm/llvm-project/pull/128086
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