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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>
18 lines
514 B
HLSL
18 lines
514 B
HLSL
RWByteAddressBuffer ssbo : register(u0, space0);
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float2x2 tint_symbol(RWByteAddressBuffer buffer, uint offset) {
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return float2x2(asfloat(buffer.Load2((offset + 0u))), asfloat(buffer.Load2((offset + 8u))));
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}
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void tint_symbol_2(RWByteAddressBuffer buffer, uint offset, float2x2 value) {
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buffer.Store2((offset + 0u), asuint(value[0u]));
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buffer.Store2((offset + 8u), asuint(value[1u]));
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}
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[numthreads(1, 1, 1)]
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void f() {
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const float2x2 v = tint_symbol(ssbo, 0u);
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tint_symbol_2(ssbo, 0u, v);
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return;
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}
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