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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_INPUT:ubuffer(data=[0 0 0 0 0], stride=4):out,name=outputBuffer
RWStructuredBuffer<float> outputBuffer;
struct A : IDifferentiable
{
float x;
float y;
[__unsafeForceInlineEarly]
static Differential dzero()
{
Differential b = {0.0, float.dzero()};
return b;
}
[__unsafeForceInlineEarly]
static Differential dadd(Differential a, Differential b)
{
Differential o = {a.x + b.x, 0.0};
return o;
}
[__unsafeForceInlineEarly]
static Differential dmul(This a, Differential b)
{
Differential o = {a.x * b.x, 0.0};
return o;
}
};
typedef DifferentialPair<A> dpA;
[BackwardDifferentiable]
A f(A a)
{
A aout;
aout.y = 2 * a.x;
aout.x = 5 * a.x;
return aout;
}
[numthreads(1, 1, 1)]
void computeMain(uint3 dispatchThreadID : SV_DispatchThreadID)
{
{
A a = {1.0, 2.0};
A.Differential azero = {0.0, 0.0};
dpA dpa = dpA(a, azero);
A.Differential dout = {1.0, 1.0};
__bwd_diff(f)(dpa, dout);
outputBuffer[0] = dpa.d.x; // Expect: 10
outputBuffer[1] = dpa.d.y; // Expect: 0
}
}
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