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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 0], stride=4):out,name=outputBuffer
RWStructuredBuffer<float> outputBuffer;
struct A : IDifferentiable
{
float data[3];
[Differentiable]
__init()
{
[ForceUnroll] for (uint i = 0; i < 3; i++) data[i] = 0.f;
}
[mutating]
[Differentiable]
void write(float value, inout uint offset)
{
data[offset++] = value;
}
[mutating]
[Differentiable]
void write<let N : int>(vector<float, N> value, inout uint offset)
{
[ForceUnroll] for (uint i = 0; i < N; i++) write(value[i], offset);
}
}
[Differentiable]
float3 run(float3 x)
{
A a = A();
uint offset = 0;
a.write(x, offset);
return float3(a.data[0], a.data[1], a.data[2]);
}
[numthreads(1, 1, 1)]
void computeMain(uint3 dispatchThreadID: SV_DispatchThreadID)
{
DifferentialPair<float3> dp = diffPair(float3(1.f, 2.f, 3.f), float3(0.f));
float3 dOut = float3(1.f, 0.5f, 0.1f);
bwd_diff(run)(dp, dOut);
outputBuffer[0] = dp.d[0];
outputBuffer[1] = dp.d[1];
outputBuffer[2] = dp.d[2];
}
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