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//TEST(compute):COMPARE_COMPUTE_EX:-slang -compute -shaderobj -output-using-type
//TEST(compute, vulkan):COMPARE_COMPUTE_EX:-vk -compute -shaderobj -output-using-type
//TEST(compute):COMPARE_COMPUTE_EX:-cuda -compute -shaderobj -output-using-type
//TEST_INPUT:ubuffer(data=[0 0 0 0 0], stride=4):out,name=outputBuffer
RWStructuredBuffer<float> outputBuffer;
struct A : IDifferentiable
{
float x;
float y;
};
struct B : IDifferentiable
{
float x;
float y;
};
typedef DifferentialPair<A> dpA;
float id(float x)
{
return x;
}
[BackwardDifferentiable]
void f(A input, out B rs)
{
rs.x = input.x * input.x;
// Derivative of rs.x should still propagate through this no_diff call.
rs.y = no_diff id(input.y);
}
[numthreads(1, 1, 1)]
void computeMain(uint3 dispatchThreadID : SV_DispatchThreadID)
{
{
A a = {3.0, 2.0};
A.Differential azero = {0.0, 0.0};
dpA dpa = dpA(a, azero);
B.Differential dout = {1.0, 1.0};
__bwd_diff(f)(dpa, dout);
outputBuffer[0] = dpa.d.x; // Expect: 6
outputBuffer[1] = dpa.d.y; // Expect: 0
}
}
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