//TEST_CATEGORY(wave, compute)
//DISABLE_TEST:COMPARE_COMPUTE_EX:-cpu -compute -shaderobj
//DISABLE_TEST:COMPARE_COMPUTE_EX:-slang -compute -shaderobj
//TEST:COMPARE_COMPUTE_EX:-slang -compute -dx12 -profile cs_6_0 -shaderobj -render-feature hardware-device
//TEST(vulkan):COMPARE_COMPUTE_EX:-vk -compute -shaderobj -render-feature hardware-device
//TEST:COMPARE_COMPUTE_EX:-cuda -compute -capability cuda_sm_7_0 -shaderobj
//TEST:COMPARE_COMPUTE_EX:-metal -compute -shaderobj

// WGSL doesn't support wave functions in a dynamic control flow; it works only with uniform control flow.
//DISABLE_TEST:COMPARE_COMPUTE_EX:-wgpu -compute -shaderobj

//TEST_INPUT:ubuffer(data=[0 0 0 0  0 0 0 0], stride=4):out,name outputBuffer
RWStructuredBuffer<int> outputBuffer;

[numthreads(8, 1, 1)]
void computeMain(uint3 dispatchThreadID : SV_DispatchThreadID)
{
    int idx = int(dispatchThreadID.x);

    if (idx < 3)
    {
        // Diverge!!
        outputBuffer[idx] = -1;
        return;
    }

    int value = 0;
    outputBuffer[idx] = WaveIsFirstLane();
}