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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.
107 lines
4.6 KiB
C++
107 lines
4.6 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_POSTPROCESS_LOCK_STATUS_H
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#define FFX_FSR2_POSTPROCESS_LOCK_STATUS_H
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FfxFloat32x4 WrapShadingChangeLuma(FfxInt32x2 iPxSample)
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{
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return FfxFloat32x4(LoadMipLuma(iPxSample, LumaMipLevelToUse()), 0, 0, 0);
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}
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#if FFX_HALF
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FFX_MIN16_F4 WrapShadingChangeLuma(FFX_MIN16_I2 iPxSample)
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{
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return FFX_MIN16_F4(LoadMipLuma(iPxSample, LumaMipLevelToUse()), 0, 0, 0);
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}
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#endif
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#if FFX_FSR2_OPTION_POSTPROCESSLOCKSTATUS_SAMPLERS_USE_DATA_HALF && FFX_HALF
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DeclareCustomFetchBilinearSamplesMin16(FetchShadingChangeLumaSamples, WrapShadingChangeLuma)
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#else
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DeclareCustomFetchBicubicSamples(FetchShadingChangeLumaSamples, WrapShadingChangeLuma)
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#endif
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DeclareCustomTextureSample(ShadingChangeLumaSample, Lanczos2, FetchShadingChangeLumaSamples)
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FfxFloat32 GetShadingChangeLuma(FfxInt32x2 iPxHrPos, FfxFloat32x2 fUvCoord)
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{
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FfxFloat32 fShadingChangeLuma = 0;
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#if 0
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fShadingChangeLuma = Exposure() * exp(ShadingChangeLumaSample(fUvCoord, LumaMipDimensions()).x);
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#else
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const FfxFloat32 fDiv = FfxFloat32(2 << LumaMipLevelToUse());
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FfxInt32x2 iMipRenderSize = FfxInt32x2(RenderSize() / fDiv);
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fUvCoord = ClampUv(fUvCoord, iMipRenderSize, LumaMipDimensions());
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fShadingChangeLuma = Exposure() * exp(FfxFloat32(SampleMipLuma(fUvCoord, LumaMipLevelToUse())));
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#endif
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fShadingChangeLuma = ffxPow(fShadingChangeLuma, 1.0f / 6.0f);
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return fShadingChangeLuma;
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}
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void UpdateLockStatus(AccumulationPassCommonParams params,
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FFX_PARAMETER_INOUT FfxFloat32 fReactiveFactor, LockState state,
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FFX_PARAMETER_INOUT FfxFloat32x2 fLockStatus,
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FFX_PARAMETER_OUT FfxFloat32 fLockContributionThisFrame,
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FFX_PARAMETER_OUT FfxFloat32 fLuminanceDiff) {
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const FfxFloat32 fShadingChangeLuma = GetShadingChangeLuma(params.iPxHrPos, params.fHrUv);
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//init temporal shading change factor, init to -1 or so in reproject to know if "true new"?
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fLockStatus[LOCK_TEMPORAL_LUMA] = (fLockStatus[LOCK_TEMPORAL_LUMA] == FfxFloat32(0.0f)) ? fShadingChangeLuma : fLockStatus[LOCK_TEMPORAL_LUMA];
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FfxFloat32 fPreviousShadingChangeLuma = fLockStatus[LOCK_TEMPORAL_LUMA];
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fLuminanceDiff = 1.0f - MinDividedByMax(fPreviousShadingChangeLuma, fShadingChangeLuma);
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if (state.NewLock) {
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fLockStatus[LOCK_TEMPORAL_LUMA] = fShadingChangeLuma;
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fLockStatus[LOCK_LIFETIME_REMAINING] = (fLockStatus[LOCK_LIFETIME_REMAINING] != 0.0f) ? 2.0f : 1.0f;
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}
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else if(fLockStatus[LOCK_LIFETIME_REMAINING] <= 1.0f) {
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fLockStatus[LOCK_TEMPORAL_LUMA] = ffxLerp(fLockStatus[LOCK_TEMPORAL_LUMA], FfxFloat32(fShadingChangeLuma), 0.5f);
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}
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else {
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if (fLuminanceDiff > 0.1f) {
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KillLock(fLockStatus);
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}
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}
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fReactiveFactor = ffxMax(fReactiveFactor, ffxSaturate((fLuminanceDiff - 0.1f) * 10.0f));
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fLockStatus[LOCK_LIFETIME_REMAINING] *= (1.0f - fReactiveFactor);
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fLockStatus[LOCK_LIFETIME_REMAINING] *= ffxSaturate(1.0f - params.fAccumulationMask);
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fLockStatus[LOCK_LIFETIME_REMAINING] *= FfxFloat32(params.fDepthClipFactor < 0.1f);
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// Compute this frame lock contribution
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const FfxFloat32 fLifetimeContribution = ffxSaturate(fLockStatus[LOCK_LIFETIME_REMAINING] - 1.0f);
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const FfxFloat32 fShadingChangeContribution = ffxSaturate(MinDividedByMax(fLockStatus[LOCK_TEMPORAL_LUMA], fShadingChangeLuma));
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fLockContributionThisFrame = ffxSaturate(ffxSaturate(fLifetimeContribution * 4.0f) * fShadingChangeContribution);
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}
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#endif //!defined( FFX_FSR2_POSTPROCESS_LOCK_STATUS_H )
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