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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 0], stride=4):out,name=outputBuffer
RWStructuredBuffer<float> outputBuffer;
interface IFoo : IDifferentiable
{
[Differentiable]
__init(Differential v);
}
struct Impl : IFoo
{
float x;
[Differentiable]
__init(Differential v)
{
x = v.x;
}
// We have to add this __init so that the following code can still work:
// Impl.Differential v0 = { (float)x };
// because when there is a explicit constructor defined, we will not fall back
// to legacy constructor. So this construction will fail.
[Differentiable]
__init(float v)
{
x = v;
}
}
[Differentiable]
float test(float x)
{
Impl.Differential v0 = { x };
var v1 = Impl(v0);
return v1.x * v1.x;
}
[numthreads(1,1,1)]
void computeMain(uint tid : SV_DispatchThreadID)
{
var p = diffPair(3.0, 0.0);
bwd_diff(test)(p, 1.0);
outputBuffer[tid] = p.d;
// CHECK: 6.0
}
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