137 lines
5.2 KiB
C++
137 lines
5.2 KiB
C++
// This file is part of the FidelityFX SDK.
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//
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// Copyright (c) 2022-2023 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 0 // Reference
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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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FfxFloat32x4 fSample = FfxFloat32x4(LoadLockStatus(iPxSample), 0.0f, 0.0f);
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return fSample;
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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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FFX_MIN16_F4 fSample = FFX_MIN16_F4(LoadLockStatus(iPxSample), 0.0, 0.0);
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return fSample;
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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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FfxBoolean IsUvInside(FfxFloat32x2 fUv)
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{
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return (fUv.x >= 0.0f && fUv.x <= 1.0f) && (fUv.y >= 0.0f && fUv.y <= 1.0f);
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}
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void ComputeReprojectedUVs(const AccumulationPassCommonParams params, FFX_PARAMETER_OUT FfxFloat32x2 fReprojectedHrUv, FFX_PARAMETER_OUT FfxBoolean bIsExistingSample)
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{
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fReprojectedHrUv = params.fHrUv + params.fMotionVector;
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bIsExistingSample = IsUvInside(fReprojectedHrUv);
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}
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void ReprojectHistoryColor(const AccumulationPassCommonParams params, FFX_PARAMETER_OUT FfxFloat32x3 fHistoryColor, FFX_PARAMETER_OUT FfxFloat32 fTemporalReactiveFactor, FFX_PARAMETER_OUT FfxBoolean bInMotionLastFrame)
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{
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FfxFloat32x4 fHistory = HistorySample(params.fReprojectedHrUv, DisplaySize());
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fHistoryColor = PrepareRgb(fHistory.rgb, Exposure(), PreviousFramePreExposure());
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fHistoryColor = RGBToYCoCg(fHistoryColor);
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//Compute temporal reactivity info
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fTemporalReactiveFactor = ffxSaturate(abs(fHistory.w));
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bInMotionLastFrame = (fHistory.w < 0.0f);
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}
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LockState ReprojectHistoryLockStatus(const AccumulationPassCommonParams params, FFX_PARAMETER_OUT FfxFloat32x2 fReprojectedLockStatus)
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{
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LockState state = { FFX_FALSE, FFX_FALSE };
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const FfxFloat32 fNewLockIntensity = LoadRwNewLocks(params.iPxHrPos);
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state.NewLock = fNewLockIntensity > (127.0f / 255.0f);
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FfxFloat32 fInPlaceLockLifetime = state.NewLock ? fNewLockIntensity : 0;
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fReprojectedLockStatus = SampleLockStatus(params.fReprojectedHrUv);
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if (fReprojectedLockStatus[LOCK_LIFETIME_REMAINING] != FfxFloat32(0.0f)) {
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state.WasLockedPrevFrame = true;
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}
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return state;
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}
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#endif //!defined( FFX_FSR2_REPROJECT_H )
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