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https://github.com/godotengine/godot.git
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057367bf4f
Introduces support for FSR2 as a new upscaler option available from the project settings. Also introduces an specific render list for surfaces that require motion and the ability to derive motion vectors from depth buffer and camera motion.
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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