dawn-cmake/test/intrinsics/gen/atomicSub/0d26c2.wgsl.expected.hlsl
James Price f9d19719fd Implement atomicSub intrinsic
Polyfill this for HLSL using an atomic add with the operand negated.

Fixed: tint:1130
Change-Id: Ifa32d58973f1b48593ec0f6320f47f4358a5a3a9
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/62760
Auto-Submit: James Price <jrprice@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
Commit-Queue: Ben Clayton <bclayton@google.com>
Reviewed-by: Ben Clayton <bclayton@google.com>
2021-08-26 15:26:25 +00:00

27 lines
576 B
HLSL

groupshared uint arg_0;
void atomicSub_0d26c2() {
uint atomic_result = 0u;
InterlockedAdd(arg_0, -1u, atomic_result);
uint res = atomic_result;
}
struct tint_symbol_1 {
uint local_invocation_index : SV_GroupIndex;
};
void compute_main_inner(uint local_invocation_index) {
{
uint atomic_result_1 = 0u;
InterlockedExchange(arg_0, 0u, atomic_result_1);
}
GroupMemoryBarrierWithGroupSync();
atomicSub_0d26c2();
}
[numthreads(1, 1, 1)]
void compute_main(tint_symbol_1 tint_symbol) {
compute_main_inner(tint_symbol.local_invocation_index);
return;
}