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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 0 0], stride=4):out,name=outputBuffer
RWStructuredBuffer<float> outputBuffer;
typedef DifferentialPair<float2> dpfloat2;
typedef DifferentialPair<float3> dpfloat3;
typedef DifferentialPair<float4> dpfloat4;
[Differentiable]
float4 f(float4 x)
{
return float4(x.rgb, x.a * x.a);
}
[numthreads(1, 1, 1)]
void computeMain(uint3 dispatchThreadID: SV_DispatchThreadID)
{
{
float4 a = float4(1.0, 2.0, 3.0, 4.0);
float4 da = float4(1.0, 0.5, 1.5, 2.5);
outputBuffer[0] = fwd_diff(f)(dpfloat4(a, da)).d.x;
}
{
float4 a = float4(1.0, 2.0, 3.0, 4.0);
var dpa = diffPair(a);
bwd_diff(f)(dpa, float4(1.0, 0.5, 1.5, 2.5));
outputBuffer[1] = dpa.d.x; // 1.0
outputBuffer[2] = dpa.d.y; // 0.5
outputBuffer[3] = dpa.d.z; // 0.0
outputBuffer[4] = dpa.d.a; // 0.0
}
}
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