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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], stride=4):out,name=outputBuffer
RWStructuredBuffer<float> outputBuffer;
struct A : IDifferentiable
{
float x;
[ForwardDerivative(diff_f)]
static float f(float v)
{
return v * v;
}
static DifferentialPair<float> diff_f(DifferentialPair<float> v)
{
return diffPair(v.p * v.p, v.p * v.d * 2.0);
}
[BackwardDerivative(diff_g)]
static float g(float v)
{
return v * v;
}
static void diff_g(inout DifferentialPair<float> v, float.Differential dOut)
{
v = diffPair(v.p, dOut * 2.0);
}
}
[ForwardDifferentiable]
float test(A obj, float v)
{
return obj.f(v);
}
[BackwardDifferentiable]
float test2(A obj, float v)
{
return obj.g(v);
}
[numthreads(1, 1, 1)]
void computeMain(uint3 dispatchThreadID : SV_DispatchThreadID)
{
A a = {0.0};
var p = diffPair(3.0, 1.0);
let rs = fwd_diff(test)(diffPair(a, {1.0}), p);
var q = diffPair(3.0);
var qa = diffPair(a);
bwd_diff(test2)(qa, q, 1.0);
outputBuffer[0] = rs.d;
outputBuffer[1] = q.d;
}
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