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// Tests automatic synthesis of Differential type and method requirements.
//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 B : IDifferentiable
{
float x;
}
struct A : IDifferentiable
{
B b;
float y;
};
typedef DifferentialPair<A> dpA;
A nonDiff(A a)
{
return a;
}
[ForwardDifferentiable]
A f(A a)
{
A aout;
aout.y = 2 * a.b.x;
aout.b.x = 5 * a.b.x;
return no_diff(nonDiff(aout));
}
[numthreads(1, 1, 1)]
void computeMain(uint3 dispatchThreadID : SV_DispatchThreadID)
{
{
A a = {1.0, 2.0};
A.Differential b = {0.2};
dpA dpa = dpA(a, b);
outputBuffer[0] = __fwd_diff(f)(dpa).d.b.x; // Expect: 0
outputBuffer[1] = A.dadd(b, b).b.x; // Expect: 0.4
outputBuffer[2] = A.dmul<float>(2.0, b).b.x; // Expect: 0.4
}
}
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