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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], stride=4):out,name=outputBuffer
RWStructuredBuffer<float> outputBuffer;
struct MyStruct : IDifferentiable
{
float x;
uint i;
[ForwardDifferentiable]
__init(float x, uint i)
{
this.x = x;
this.i = i;
}
};
[ForwardDifferentiable]
float mySqr(MyStruct s)
{
if (s.i >= 1)
return s.x * s.x;
else
return 0.f;
}
[ForwardDifferentiable]
float f(float x)
{
MyStruct ms = MyStruct(x * x, 1);
return mySqr(ms);
}
[ForwardDifferentiable]
float df(float x)
{
return __fwd_diff(f)(DifferentialPair<float>(x, 1.0)).d;
}
[numthreads(1, 1, 1)]
void computeMain(uint3 dispatchThreadID : SV_DispatchThreadID)
{
// Given f(x) = x^4,
// f''(x) = 12 * x^2
// Expect f''(4) = 192
outputBuffer[0] = __fwd_diff(df)(DifferentialPair<float>(4.0, 1.0)).d;
}
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