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//TEST:COMPILE: -entry computeMain -stage compute -target callable tests/hlsl-intrinsic/sampler-feedback/compute-sampler-feedback.slang
// Not available on non PS shader
// dx.op.writeSamplerFeedback WriteSamplerFeedback
// dx.op.writeSamplerFeedbackBias WriteSamplerFeedbackBias
FeedbackTexture2D<SAMPLER_FEEDBACK_MIN_MIP> feedbackMinMip;
FeedbackTexture2D<SAMPLER_FEEDBACK_MIP_REGION_USED> feedbackMipRegionUsed;
FeedbackTexture2DArray<SAMPLER_FEEDBACK_MIN_MIP> feedbackMinMipArray;
FeedbackTexture2DArray<SAMPLER_FEEDBACK_MIP_REGION_USED> feebackMipRegionUsedArray;
Texture2D<float> tex2D;
Texture2DArray<float> tex2DArray;
SamplerState samp;
[numthreads(4, 1, 1)]
void computeMain(uint3 dispatchThreadID : SV_DispatchThreadID)
{
float2 coords2D = float2(1, 2) * dispatchThreadID.x;
float3 coords2DArray = float3(1, 2, 3) * dispatchThreadID.x;
float clamp = 4;
float bias = 0.5F;
float lod = 6;
float2 ddx = float2(1.0F / 32, 2.0F / 32);
float2 ddy = float2(3.0F / 32, 4.0F / 32);
uint width, height, elements, mipLevels;
feedbackMinMip.GetDimensions(width, height);
feedbackMinMipArray.GetDimensions(width, height, elements);
feedbackMinMip.GetDimensions(0, width, height, mipLevels);
feedbackMinMipArray.GetDimensions(0, width, height, elements, mipLevels);
feedbackMinMip.WriteSamplerFeedbackGrad(tex2D, samp, coords2D, ddx, ddy, clamp);
// Level
feedbackMinMip.WriteSamplerFeedbackLevel(tex2D, samp, coords2D, lod);
// No Clamp
feedbackMinMip.WriteSamplerFeedbackGrad(tex2D, samp, coords2D, ddx, ddy);
}
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