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https://github.com/encounter/dawn-cmake.git
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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>
48 lines
1.3 KiB
HLSL
48 lines
1.3 KiB
HLSL
struct tint_padded_array_element {
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float2 el;
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};
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RWByteAddressBuffer ssbo : register(u0, space0);
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float2x2 arr_to_mat2x2_stride_16(tint_padded_array_element arr[2]) {
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return float2x2(arr[0u].el, arr[1u].el);
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}
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typedef tint_padded_array_element mat2x2_stride_16_to_arr_ret[2];
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mat2x2_stride_16_to_arr_ret mat2x2_stride_16_to_arr(float2x2 mat) {
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const tint_padded_array_element tint_symbol_4[2] = {{mat[0u]}, {mat[1u]}};
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return tint_symbol_4;
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}
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typedef tint_padded_array_element tint_symbol_ret[2];
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tint_symbol_ret tint_symbol(RWByteAddressBuffer buffer, uint offset) {
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tint_padded_array_element arr_1[2] = (tint_padded_array_element[2])0;
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{
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for(uint i = 0u; (i < 2u); i = (i + 1u)) {
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arr_1[i].el = asfloat(buffer.Load2((offset + (i * 16u))));
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}
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}
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return arr_1;
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}
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void tint_symbol_2(RWByteAddressBuffer buffer, uint offset, tint_padded_array_element value[2]) {
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tint_padded_array_element array[2] = value;
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{
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for(uint i_1 = 0u; (i_1 < 2u); i_1 = (i_1 + 1u)) {
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buffer.Store2((offset + (i_1 * 16u)), asuint(array[i_1].el));
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}
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}
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}
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void f_1() {
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const float2x2 x_15 = arr_to_mat2x2_stride_16(tint_symbol(ssbo, 0u));
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tint_symbol_2(ssbo, 0u, mat2x2_stride_16_to_arr(x_15));
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return;
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}
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[numthreads(1, 1, 1)]
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void f() {
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f_1();
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return;
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}
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