Ben Clayton 89a0bde59c transform: Optimize ZeroInitWorkgroupMemory for arrays
Spread the array zeroing across as many workgroup invocations as possible.

Bug: tint:910
Change-Id: I1cb5a6aaafd2a0a4093ea3b9797c173378bc5605
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/60203
Kokoro: Kokoro <noreply+kokoro@google.com>
Commit-Queue: Ben Clayton <bclayton@google.com>
Reviewed-by: David Neto <dneto@google.com>
2021-07-30 14:08:06 +00:00

26 lines
709 B
HLSL

groupshared uint arg_0;
void atomicCompareExchangeWeak_b2ab2c() {
uint2 atomic_result = uint2(0u, 0u);
uint atomic_compare_value = 1u;
InterlockedCompareExchange(arg_0, atomic_compare_value, 1u, atomic_result.x);
atomic_result.y = atomic_result.x == atomic_compare_value;
uint2 res = atomic_result;
}
struct tint_symbol_1 {
uint local_invocation_index : SV_GroupIndex;
};
[numthreads(1, 1, 1)]
void compute_main(tint_symbol_1 tint_symbol) {
const uint local_invocation_index = tint_symbol.local_invocation_index;
{
uint atomic_result_1 = 0u;
InterlockedExchange(arg_0, 0u, atomic_result_1);
}
GroupMemoryBarrierWithGroupSync();
atomicCompareExchangeWeak_b2ab2c();
return;
}