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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;
static const uint levels = 8;
[Differentiable]
void eval(float3 p, out float4 output[levels])
{
[ForceUnroll] for (int level = 0; level < 3; ++level)
{
float4 f = 0.f;
// tri-linear time!
[ForceUnroll] for (int z = 0; z < 2; ++z)
{
float wx = 0;
if (z != 0)
wx = p.x;
else
wx = p.y;
f += wx;
}
output[level] = f;
}
}
[numthreads(1, 1, 1)]
void computeMain(uint3 dispatchThreadID: SV_DispatchThreadID)
{
float3 p = float3(2.0, 3.0, 0);
float4 output[levels];
eval(p, output);
DifferentialPair<float3> dp = DifferentialPair<float3>(p, 0);
__bwd_diff(eval)(dp, output);
// Write output
outputBuffer[0] = dp.d.x;
}
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