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// comma-operator.slang
//TEST(compute):COMPARE_COMPUTE:-cpu -shaderobj -xslang -Wno-41024
//TEST(compute):COMPARE_COMPUTE: -shaderobj -xslang -Wno-41024
// Test that the "comma operator" behaves as expected
// We will also include a cross-compilation test just to
// confirm that the generated SPIR-V (and by extension DXIL/DXBC)
// doesn't include a subroutine defintion/call for `operator,`
//TEST:CROSS_COMPILE:-target spirv-assembly -entry computeMain -stage compute -Wno-41024
int test(int inVal)
{
int a = inVal;
// We expect the left operand to `operator,` to be
// evaluated before the right operand, and for the
// result to be the value of the right operand
//
return a*=2, a+1;
}
//TEST_INPUT:ubuffer(data=[0 1 2 3], stride=4):out,name=outputBuffer
RWStructuredBuffer<int> outputBuffer;
[numthreads(4, 1, 1)]
void computeMain(uint3 dispatchThreadID : SV_DispatchThreadID)
{
uint tid = dispatchThreadID.x;
int inVal = outputBuffer[tid];
int outVal = test(inVal);
outputBuffer[tid] = outVal;
}
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