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e027e81bf2
By generating a helper function for these, we can keep the atomic expression pre-statement-free. This can help prevent for-loops from being transformed into while loops, which can upset FXC. We can't do the same for workgroup storage atomics, as the InterlockedXXX() methods have the workgroup-storage expression as the first argument, and I'm not aware of any way to make a user-declared parameter be `groupshared`. Change-Id: I8669127a58dc9cae95ce316523029064b5c9b5fa Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/57462 Commit-Queue: James Price <jrprice@google.com> Auto-Submit: Ben Clayton <bclayton@google.com> Kokoro: Kokoro <noreply+kokoro@google.com> Reviewed-by: James Price <jrprice@google.com>
20 lines
525 B
HLSL
20 lines
525 B
HLSL
uint atomicAdd_1(RWByteAddressBuffer buffer, uint offset, uint value) {
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uint original_value = 0;
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buffer.InterlockedAdd(offset, value, original_value);
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return original_value;
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}
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RWByteAddressBuffer drawOut : register(u5, space0);
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static uint cubeVerts = 0u;
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struct tint_symbol_1 {
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uint3 global_id : SV_DispatchThreadID;
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};
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[numthreads(1, 1, 1)]
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void computeMain(tint_symbol_1 tint_symbol) {
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const uint3 global_id = tint_symbol.global_id;
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const uint firstVertex = atomicAdd_1(drawOut, 0u, cubeVerts);
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return;
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}
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