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//TEST(compute):COMPARE_COMPUTE_EX(filecheck-buffer=CHECK):-slang -compute -shaderobj -output-using-type
//TEST(compute, vulkan):COMPARE_COMPUTE_EX(filecheck-buffer=CHECK):-vk -compute -shaderobj -output-using-type
//TEST(compute):COMPARE_COMPUTE_EX(filecheck-buffer=CHECK):-cuda -compute -shaderobj -output-using-type
//TEST_INPUT:ubuffer(data=[0 0 0 0], stride=4):out,name=outputBuffer
RWStructuredBuffer<float> outputBuffer;
typedef DifferentialPair<float> dpfloat;
struct Foo : IDifferentiable
{
float a;
int b;
}
[PreferCheckpoint]
float k()
{
return outputBuffer[3] + 1;
}
[Differentiable]
void h(float x, float y, out Foo result)
{
float p = no_diff k();
float m = x + y + p;
float n = x - y;
float r = m * n + 2 * x * y;
result = {r, 2};
}
[numthreads(1, 1, 1)]
void computeMain(uint3 dispatchThreadID : SV_DispatchThreadID)
{
float x = 2.0;
float y = 3.5;
float dx = 1.0;
float dy = 0.5;
dpfloat dresult;
dpfloat dpx = diffPair(x);
dpfloat dpy = diffPair(y);
Foo.Differential dFoo;
dFoo.a = 1.0;
bwd_diff(h)(dpx, dpy, dFoo);
outputBuffer[0] = dpx.d; // CHECK: 12.0
outputBuffer[1] = dpy.d; // CHECK: -4.0
}
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