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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], stride=4):out,name=outputBuffer
RWStructuredBuffer<float> outputBuffer;
typedef DifferentialPair<float2> dpfloat2;
typedef DifferentialPair<float3> dpfloat3;
typedef DifferentialPair<float4> dpfloat4;
[ForwardDifferentiable]
float2 f(float3 x)
{
return x.zy;
}
[ForwardDifferentiable]
float2 g(float3 x, float4 y)
{
float3 a = x + y.zyx;
float2 b = x.zx - y.yw;
return a.yz * b + 2 * x.xy * y.yz;
}
[numthreads(1, 1, 1)]
void computeMain(uint3 dispatchThreadID: SV_DispatchThreadID)
{
{
float3 a = float3(2.0, 2.0, 2.0);
float3 da = float3(1.0, 0.5, 1.0);
outputBuffer[0] = __fwd_diff(f)(dpfloat3(a, da)).d.x; // Expect: 1
outputBuffer[1] = __fwd_diff(f)(dpfloat3(a, da)).d.y; // Expect: 0.5
float3 x = float3(0.5, 2.0, 0.5);
float4 y = float4(-1.5, 1.0, 4.0, 2.0);
float3 dx = float3(1.0, 0.0, -1.0);
float4 dy = float4(0.0, 0.5, -0.25, 1.0);
outputBuffer[2] = __fwd_diff(g)(dpfloat3(x, dx), dpfloat4(y, dy)).d.x; // Expect: -2.25
outputBuffer[3] = __fwd_diff(g)(dpfloat3(x, dx), dpfloat4(y, dy)).d.y; // Expect: 0.5
}
}
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