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125 lines
5.0 KiB
125 lines
5.0 KiB
// This file is part of the FidelityFX SDK.
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//
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// Copyright (c) 2022 Advanced Micro Devices, Inc. All rights reserved.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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#ifndef FFX_FSR2_REPROJECT_H
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#define FFX_FSR2_REPROJECT_H
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#ifndef FFX_FSR2_OPTION_REPROJECT_USE_LANCZOS_TYPE
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#define FFX_FSR2_OPTION_REPROJECT_USE_LANCZOS_TYPE 1 // Approximate
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#endif
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FfxFloat32x4 WrapHistory(FfxInt32x2 iPxSample)
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{
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return LoadHistory(iPxSample);
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}
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#if FFX_HALF
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FFX_MIN16_F4 WrapHistory(FFX_MIN16_I2 iPxSample)
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{
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return FFX_MIN16_F4(LoadHistory(iPxSample));
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}
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#endif
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#if FFX_FSR2_OPTION_REPROJECT_SAMPLERS_USE_DATA_HALF && FFX_HALF
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DeclareCustomFetchBicubicSamplesMin16(FetchHistorySamples, WrapHistory)
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DeclareCustomTextureSampleMin16(HistorySample, FFX_FSR2_GET_LANCZOS_SAMPLER1D(FFX_FSR2_OPTION_REPROJECT_USE_LANCZOS_TYPE), FetchHistorySamples)
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#else
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DeclareCustomFetchBicubicSamples(FetchHistorySamples, WrapHistory)
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DeclareCustomTextureSample(HistorySample, FFX_FSR2_GET_LANCZOS_SAMPLER1D(FFX_FSR2_OPTION_REPROJECT_USE_LANCZOS_TYPE), FetchHistorySamples)
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#endif
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FfxFloat32x4 WrapLockStatus(FfxInt32x2 iPxSample)
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{
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return FfxFloat32x4(LoadLockStatus(iPxSample), 0.0f);
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}
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#if FFX_HALF
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FFX_MIN16_F4 WrapLockStatus(FFX_MIN16_I2 iPxSample)
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{
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return FFX_MIN16_F4(LoadLockStatus(iPxSample), 0.0f);
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}
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#endif
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#if 1
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#if FFX_FSR2_OPTION_REPROJECT_SAMPLERS_USE_DATA_HALF && FFX_HALF
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DeclareCustomFetchBilinearSamplesMin16(FetchLockStatusSamples, WrapLockStatus)
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DeclareCustomTextureSampleMin16(LockStatusSample, Bilinear, FetchLockStatusSamples)
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#else
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DeclareCustomFetchBilinearSamples(FetchLockStatusSamples, WrapLockStatus)
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DeclareCustomTextureSample(LockStatusSample, Bilinear, FetchLockStatusSamples)
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#endif
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#else
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#if FFX_FSR2_OPTION_REPROJECT_SAMPLERS_USE_DATA_HALF && FFX_HALF
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DeclareCustomFetchBicubicSamplesMin16(FetchLockStatusSamples, WrapLockStatus)
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DeclareCustomTextureSampleMin16(LockStatusSample, FFX_FSR2_GET_LANCZOS_SAMPLER1D(FFX_FSR2_OPTION_REPROJECT_USE_LANCZOS_TYPE), FetchLockStatusSamples)
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#else
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DeclareCustomFetchBicubicSamples(FetchLockStatusSamples, WrapLockStatus)
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DeclareCustomTextureSample(LockStatusSample, FFX_FSR2_GET_LANCZOS_SAMPLER1D(FFX_FSR2_OPTION_REPROJECT_USE_LANCZOS_TYPE), FetchLockStatusSamples)
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#endif
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#endif
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FfxFloat32x2 GetMotionVector(FfxInt32x2 iPxHrPos, FfxFloat32x2 fHrUv)
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{
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#if FFX_FSR2_OPTION_LOW_RESOLUTION_MOTION_VECTORS
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FfxFloat32x2 fDilatedMotionVector = LoadDilatedMotionVector(FFX_MIN16_I2(fHrUv * RenderSize()));
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#else
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FfxFloat32x2 fDilatedMotionVector = LoadInputMotionVector(iPxHrPos);
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#endif
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return fDilatedMotionVector;
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}
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void ComputeReprojectedUVs(FfxInt32x2 iPxHrPos, FfxFloat32x2 fMotionVector, FFX_PARAMETER_OUT FfxFloat32x2 fReprojectedHrUv, FFX_PARAMETER_OUT FfxBoolean bIsExistingSample)
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{
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FfxFloat32x2 fHrUv = (iPxHrPos + 0.5f) / DisplaySize();
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fReprojectedHrUv = fHrUv + fMotionVector;
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bIsExistingSample = (fReprojectedHrUv.x >= 0.0f && fReprojectedHrUv.x <= 1.0f) &&
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(fReprojectedHrUv.y >= 0.0f && fReprojectedHrUv.y <= 1.0f);
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}
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void ReprojectHistoryColor(FfxInt32x2 iPxHrPos, FfxFloat32x2 fReprojectedHrUv, FFX_PARAMETER_OUT FfxFloat32x4 fHistoryColorAndWeight)
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{
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fHistoryColorAndWeight = HistorySample(fReprojectedHrUv, DisplaySize());
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fHistoryColorAndWeight.rgb *= Exposure();
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#if FFX_FSR2_OPTION_HDR_COLOR_INPUT
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fHistoryColorAndWeight.rgb = Tonemap(fHistoryColorAndWeight.rgb);
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#endif
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fHistoryColorAndWeight.rgb = RGBToYCoCg(fHistoryColorAndWeight.rgb);
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}
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void ReprojectHistoryLockStatus(FfxInt32x2 iPxHrPos, FfxFloat32x2 fReprojectedHrUv, FFX_PARAMETER_OUT FfxFloat32x3 fReprojectedLockStatus)
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{
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// If function is called from Accumulate pass, we need to treat locks differently
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FfxFloat32 fInPlaceLockLifetime = LoadRwLockStatus(iPxHrPos)[LOCK_LIFETIME_REMAINING];
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fReprojectedLockStatus = SampleLockStatus(fReprojectedHrUv);
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// Keep lifetime if new lock
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if (fInPlaceLockLifetime < 0.0f) {
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fReprojectedLockStatus[LOCK_LIFETIME_REMAINING] = fInPlaceLockLifetime;
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}
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}
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#endif //!defined( FFX_FSR2_REPROJECT_H )
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