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//TEST(compute, vulkan):COMPARE_COMPUTE_EX:-vk -compute -shaderobj -output-using-type
//TEST(compute):COMPARE_COMPUTE_EX:-slang -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;
float lengthDiffX(float3 x)
{
return (length(float3(x.x + 0.001, x.yz)) - length(float3(x.x - 0.001, x.yz))) / 0.002;
}
float lengthDiffY(float3 x)
{
return (length(float3(x.x, x.y + 0.001, x.z)) - length(float3(x.x, x.y - 0.001, x.z))) / 0.002;
}
float lengthDiffZ(float3 x)
{
return (length(float3(x.xy, x.z + 0.001)) - length(float3(x.xy, x.z - 0.001))) / 0.002;
}
[numthreads(1, 1, 1)]
void computeMain(uint3 dispatchThreadID : SV_DispatchThreadID)
{
{
let x = float3(12, 23, 31);
var dpx = diffPair(x);
__bwd_diff(length)(dpx, 1.0);
outputBuffer[0] = dpx.d[0];
outputBuffer[1] = dpx.d[1];
outputBuffer[2] = dpx.d[2];
// for reference:
//outputBuffer[3] = lengthDiffX(x);
//outputBuffer[4] = lengthDiffY(x);
//outputBuffer[5] = lengthDiffZ(x);
}
}
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