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97668c8c37
Add `transform::DecomposeStridedMatrix`, which replaces matrix members of storage or uniform buffer structures, that have a [[stride]] decoration, into an array of N column vectors. This is required to correctly handle `mat2x2` matrices in UBOs, as std140 rules will expect a default stride of 16 bytes, when in WGSL the default structure layout expects a stride of 8 bytes. Bug: tint:1047 Change-Id: If5ca3c6ec087bbc1ac31a8d9a657b99bf34042a4 Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/59840 Reviewed-by: David Neto <dneto@google.com> Commit-Queue: Ben Clayton <bclayton@google.com> Kokoro: Kokoro <noreply+kokoro@google.com>
14 lines
198 B
Plaintext
14 lines
198 B
Plaintext
#include <metal_stdlib>
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using namespace metal;
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struct SSBO {
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/* 0x0000 */ float2x2 m;
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};
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kernel void f(device SSBO& ssbo [[buffer(0)]]) {
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float2x2 const v = ssbo.m;
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ssbo.m = v;
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return;
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}
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