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//TEST(compute):COMPARE_COMPUTE_EX(filecheck-buffer=CHECK):-slang -compute -shaderobj -output-using-type -g0
//TEST(compute):COMPARE_COMPUTE_EX(filecheck-buffer=CHECK):-cuda -compute -shaderobj -output-using-type -g0
//TEST_INPUT:ubuffer(data=[0 0 0 0], stride=4):out,name=outputBuffer
RWStructuredBuffer<float> outputBuffer;
void foo_bwd(float a, inout DifferentialPair<float> dpx)
{
outputBuffer[2] = 2.f;
}
[Differentiable, BackwardDerivative(foo_bwd)]
void foo(no_diff float a, float x)
{ }
[Differentiable]
float outerFunc(no_diff float a, float x)
{
foo(a, x);
return 1.f;
}
[numthreads(1, 1, 1)]
[shader("compute")]
void computeMain(uint3 dispatchThreadID: SV_DispatchThreadID)
{
float a = 10.0;
DifferentialPair<float> dpx = DifferentialPair<float>(4.f, 1.f);
bwd_diff(outerFunc)(a, dpx, 1.0);
// CHECK: type: float
// CHECK: 0.0
// CHECK: 0.0
// CHECK: 2.0
// CHECK: 0.0
}
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