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//TEST:SIMPLE(filecheck=CHECK): -target cuda -line-directive-mode none
//CHECK: struct s_bwd_prop_function_Intermediates{{[_0-9]+}}
//CHECK: {
//CHECK: MyDiffPtr{{[_0-9]+}} {{[_A-Za-z0-9]+}};
//CHECK: MyDiffPtr{{[_0-9]+}} {{[_A-Za-z0-9]+}};
//CHECK: };
//TEST_INPUT:ubuffer(data=[0 0 0 0], stride=4):out, name outputBuffer
RWStructuredBuffer<float> outputBuffer;
struct MyDiffPtr
{
uint offset;
uint d_offset;
[BackwardDerivative(__bwd_foo)]
float foo()
{
return outputBuffer[offset] * outputBuffer[offset];
}
void __bwd_foo(float grad)
{
outputBuffer[d_offset] = 2.f * outputBuffer[offset] * grad;
}
};
[Differentiable]
float function(MyDiffPtr *i)
{
return i[0].foo() + i[1].foo();
}
[numthreads(1, 1, 1), shader("compute")]
void main(uint3 dispatchThreadID: SV_DispatchThreadID)
{
MyDiffPtr s[2] = {{0, 2}, {1, 3}};
__bwd_diff(function)(&s[0], 1.0f);
}
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