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UnrealEngine/Engine/Source/ThirdParty/Intel/ISPC/ispc-1.24.0/tests/atomics-13.ispc
2025-05-18 13:04:45 +08:00

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#include "../test_static.isph"
uniform unsigned int32 s = 0;
task void f_f(uniform float RET[], uniform float aFOO[]) {
float a = aFOO[programIndex];
int32 b = 0;
if (programIndex < 32 && programIndex & 1)
b = atomic_or_global(&s, (1ul << programIndex));
RET[programIndex] = popcnt(reduce_max((int32)b));
}
task void result(uniform float RET[]) {
RET[programIndex] = programCount == 1 ? 0 : ((min(32, programCount)/2) - 1);
}