151 lines
5.0 KiB
C
151 lines
5.0 KiB
C
// This file is part of the FidelityFX SDK.
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//
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// Copyright (C) 2024 Advanced Micro Devices, Inc.
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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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//
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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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#include "ffx_vrs_resources.h"
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#if defined(FFX_GPU)
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#ifdef __hlsl_dx_compiler
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#pragma dxc diagnostic push
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#pragma dxc diagnostic ignored "-Wambig-lit-shift"
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#endif //__hlsl_dx_compiler
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#include "ffx_core.h"
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#ifdef __hlsl_dx_compiler
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#pragma dxc diagnostic pop
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#endif //__hlsl_dx_compiler
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#ifndef FFX_PREFER_WAVE64
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#define FFX_PREFER_WAVE64
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#endif // #ifndef FFX_PREFER_WAVE64
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#pragma warning(disable: 3205) // conversion from larger type to smaller
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#define FFX_DECLARE_SRV_REGISTER(regIndex) t##regIndex
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#define FFX_DECLARE_UAV_REGISTER(regIndex) u##regIndex
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#define FFX_DECLARE_CB_REGISTER(regIndex) b##regIndex
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#define FFX_VRS_DECLARE_SRV(regIndex) register(FFX_DECLARE_SRV_REGISTER(regIndex))
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#define FFX_VRS_DECLARE_UAV(regIndex) register(FFX_DECLARE_UAV_REGISTER(regIndex))
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#define FFX_VRS_DECLARE_CB(regIndex) register(FFX_DECLARE_CB_REGISTER(regIndex))
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#if defined(VRS_BIND_CB_VRS)
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// Constant Buffer
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cbuffer cbVRS : FFX_VRS_DECLARE_CB(VRS_BIND_CB_VRS)
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{
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FfxFloat32x2 motionVectorScale;
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FfxFloat32 varianceCutoff;
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FfxFloat32 motionFactor;
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FfxInt32x2 resolution;
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FfxUInt32 tileSize;
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#define FFX_VRS_CONSTANT_BUFFER_1_SIZE 7
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}
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#else
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#define resolution 0
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#define tileSize 0
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#define varianceCutoff 0
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#define motionFactor 0
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#define motionVectorScale 0
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#endif
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FfxInt32x2 Resolution()
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{
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return resolution;
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}
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FfxUInt32 TileSize()
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{
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return tileSize;
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}
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FfxFloat32 VarianceCutoff()
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{
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return varianceCutoff;
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}
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FfxFloat32 MotionFactor()
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{
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return motionFactor;
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}
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FfxFloat32x2 MotionVectorScale()
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{
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return motionVectorScale;
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}
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#if defined(FFX_GPU)
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#define FFX_VRS_ROOTSIG_STRINGIFY(p) FFX_VRS_ROOTSIG_STR(p)
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#define FFX_VRS_ROOTSIG_STR(p) #p
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#define FFX_VRS_ROOTSIG [RootSignature( "DescriptorTable(UAV(u0, numDescriptors = " FFX_VRS_ROOTSIG_STRINGIFY(FFX_VRS_RESOURCE_IDENTIFIER_COUNT) ")), " \
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"DescriptorTable(SRV(t0, numDescriptors = " FFX_VRS_ROOTSIG_STRINGIFY(FFX_VRS_RESOURCE_IDENTIFIER_COUNT) ")), " \
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"CBV(b0) ")]
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#if defined(FFX_VRS_EMBED_ROOTSIG)
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#define FFX_VRS_EMBED_ROOTSIG_CONTENT FFX_VRS_ROOTSIG
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#else
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#define FFX_VRS_EMBED_ROOTSIG_CONTENT
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#endif // #if FFX_VRS_EMBED_ROOTSIG
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#endif // #if defined(FFX_GPU)
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// SRVs
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#if defined VRS_BIND_SRV_INPUT_COLOR
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Texture2D r_input_color : FFX_VRS_DECLARE_SRV(VRS_BIND_SRV_INPUT_COLOR);
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#endif
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#if defined VRS_BIND_SRV_INPUT_MOTIONVECTORS
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Texture2D r_input_velocity : FFX_VRS_DECLARE_SRV(VRS_BIND_SRV_INPUT_MOTIONVECTORS);
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#endif
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// UAV declarations
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#if defined VRS_BIND_UAV_OUTPUT_VRSIMAGE
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RWTexture2D<uint> rw_vrsimage_output : FFX_VRS_DECLARE_UAV(VRS_BIND_UAV_OUTPUT_VRSIMAGE);
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#endif
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#if defined(VRS_BIND_SRV_INPUT_COLOR)
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// read a value from previous frames color buffer and return luminance
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FfxFloat32 ReadLuminance(FfxInt32x2 pos)
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{
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FfxFloat32x3 color = r_input_color[pos].xyz;
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// return color value converted to grayscale
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return dot(color, FfxFloat32x3(0.30, 0.59, 0.11));
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// in some cases using different weights, linearizing the color values
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// or multiplying luminance with a value based on specularity or depth
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// may yield better results
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}
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#endif // #if defined(VRS_BIND_SRV_INPUT_COLOR)
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#if defined (VRS_BIND_SRV_INPUT_MOTIONVECTORS)
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// read per pixel motion vectors and convert them to pixel-space
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FfxFloat32x2 ReadMotionVec2D(FfxInt32x2 pos)
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{
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// return 0 to not use motion vectors
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return r_input_velocity[pos].xy * MotionVectorScale() * resolution;
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}
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#endif // #if defined (VRS_BIND_SRV_INPUT_MOTIONVECTORS)
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#if defined (VRS_BIND_UAV_OUTPUT_VRSIMAGE)
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void WriteVrsImage(FfxInt32x2 pos, FfxUInt32 value)
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{
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rw_vrsimage_output[pos] = value;
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}
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#endif // #if defined (VRS_BIND_UAV_OUTPUT_VRSIMAGE)
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#endif // #if defined(FFX_GPU)
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