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* Creates a half res Coverage atlas when Lumen is active, which tracks whether the region in space is occupied by two sided materials (foliage), which then get a smaller surface expand to reduce over-occlusion * r.LumenScene.GlobalSDF.FullyCoveredExpandSurfaceScale, r.LumenScene.GlobalSDF.UncoveredExpandSurfaceScale * A larger MinStepSize is used in two sided regions to accelerate tracing: r.LumenScene.GlobalSDF.UncoveredMinStepScale Radiance Cache: * Fixed allocator overflow corrupting the cache * Probes placed for foliage trace at the lowest resolution Screen Probe Gather: * Two Sided Foliage shading interpolates from Screen Probes a second time using the backfacing normal Radiosity: * Ray directions are generated off of CardCoord instead of AtlasCoord, fixing a source of non-determinism 3.66ms DiffuseIndirectAndAO -> 3.73ms in a scene with no foliage 4.71ms DiffuseIndirectAndAO -> 6.05ms in a scene with heavy foliage, because fixing over-occlusion makes traces cost more #preflight 621d89e5814dfc80784f1028 #jira UE-141204 #rb Krzysztof.Narkowicz #lockdown Juan.Canada #ROBOMERGE-AUTHOR: daniel.wright #ROBOMERGE-SOURCE: CL 19201289 in //UE5/Release-5.0/... via CL 19201886 #ROBOMERGE-BOT: UE5 (Release-Engine-Staging -> Main) (v921-19075845) [CL 19214930 by daniel wright in ue5-main branch]
163 lines
8.5 KiB
C++
163 lines
8.5 KiB
C++
// Copyright Epic Games, Inc. All Rights Reserved.
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/*=============================================================================
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GlobalDistanceFieldParameters.h
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=============================================================================*/
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#pragma once
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#include "CoreMinimal.h"
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#include "ShaderParameterMacros.h"
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#include "ShaderParameters.h"
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#include "RenderUtils.h"
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#include "RHIStaticStates.h"
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class FShaderParameterMap;
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/** Must match global distance field shaders. */
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const int32 GMaxGlobalDistanceFieldClipmaps = 6;
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class FGlobalDistanceFieldParameterData
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{
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public:
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FGlobalDistanceFieldParameterData()
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{
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FPlatformMemory::Memzero(this, sizeof(FGlobalDistanceFieldParameterData));
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}
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FVector4f CenterAndExtent[GMaxGlobalDistanceFieldClipmaps];
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FVector4f WorldToUVAddAndMul[GMaxGlobalDistanceFieldClipmaps];
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FVector4f MipWorldToUVScale[GMaxGlobalDistanceFieldClipmaps];
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FVector4f MipWorldToUVBias[GMaxGlobalDistanceFieldClipmaps];
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float MipFactor;
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float MipTransition;
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FRHITexture* PageAtlasTexture;
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FRHITexture* CoverageAtlasTexture;
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FRHITexture* PageTableTexture;
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FRHITexture* MipTexture;
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int32 ClipmapSizeInPages;
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FVector InvPageAtlasSize;
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FVector InvCoverageAtlasSize;
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int32 MaxPageNum;
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float GlobalDFResolution;
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float MaxDFAOConeDistance;
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int32 NumGlobalSDFClipmaps;
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};
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BEGIN_SHADER_PARAMETER_STRUCT(FGlobalDistanceFieldParameters2, )
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SHADER_PARAMETER_TEXTURE(Texture3D, GlobalDistanceFieldPageAtlasTexture)
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SHADER_PARAMETER_TEXTURE(Texture3D, GlobalDistanceFieldCoverageAtlasTexture)
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SHADER_PARAMETER_TEXTURE(Texture3D<uint>, GlobalDistanceFieldPageTableTexture)
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SHADER_PARAMETER_TEXTURE(Texture3D, GlobalDistanceFieldMipTexture)
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SHADER_PARAMETER_ARRAY(FVector4f, GlobalVolumeCenterAndExtent, [GMaxGlobalDistanceFieldClipmaps])
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SHADER_PARAMETER_ARRAY(FVector4f, GlobalVolumeWorldToUVAddAndMul, [GMaxGlobalDistanceFieldClipmaps])
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SHADER_PARAMETER_ARRAY(FVector4f, GlobalDistanceFieldMipWorldToUVScale, [GMaxGlobalDistanceFieldClipmaps])
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SHADER_PARAMETER_ARRAY(FVector4f, GlobalDistanceFieldMipWorldToUVBias, [GMaxGlobalDistanceFieldClipmaps])
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SHADER_PARAMETER(float, GlobalDistanceFieldMipFactor)
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SHADER_PARAMETER(float, GlobalDistanceFieldMipTransition)
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SHADER_PARAMETER(int32, GlobalDistanceFieldClipmapSizeInPages)
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SHADER_PARAMETER(FVector3f, GlobalDistanceFieldInvPageAtlasSize)
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SHADER_PARAMETER(FVector3f, GlobalDistanceFieldInvCoverageAtlasSize)
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SHADER_PARAMETER(float, GlobalVolumeDimension)
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SHADER_PARAMETER(float, GlobalVolumeTexelSize)
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SHADER_PARAMETER(float, MaxGlobalDFAOConeDistance)
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SHADER_PARAMETER(uint32, NumGlobalSDFClipmaps)
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SHADER_PARAMETER(float, FullyCoveredExpandSurfaceScale)
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SHADER_PARAMETER(float, UncoveredExpandSurfaceScale)
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SHADER_PARAMETER(float, UncoveredMinStepScale)
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END_SHADER_PARAMETER_STRUCT()
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FGlobalDistanceFieldParameters2 SetupGlobalDistanceFieldParameters(const FGlobalDistanceFieldParameterData& ParameterData);
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class FGlobalDistanceFieldParameters
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{
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DECLARE_INLINE_TYPE_LAYOUT(FGlobalDistanceFieldParameters, NonVirtual);
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public:
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void Bind(const FShaderParameterMap& ParameterMap)
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{
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GlobalDistanceFieldPageAtlasTexture.Bind(ParameterMap, TEXT("GlobalDistanceFieldPageAtlasTexture"));
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GlobalDistanceFieldPageTableTexture.Bind(ParameterMap, TEXT("GlobalDistanceFieldPageTableTexture"));
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GlobalDistanceFieldMipTexture.Bind(ParameterMap, TEXT("GlobalDistanceFieldMipTexture"));
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GlobalDistanceFieldMipFactor.Bind(ParameterMap, TEXT("GlobalDistanceFieldMipFactor"));
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GlobalDistanceFieldMipTransition.Bind(ParameterMap, TEXT("GlobalDistanceFieldMipTransition"));
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GlobalVolumeCenterAndExtent.Bind(ParameterMap, TEXT("GlobalVolumeCenterAndExtent"));
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GlobalVolumeWorldToUVAddAndMul.Bind(ParameterMap, TEXT("GlobalVolumeWorldToUVAddAndMul"));
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GlobalDistanceFieldMipWorldToUVScale.Bind(ParameterMap, TEXT("GlobalDistanceFieldMipWorldToUVScale"));
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GlobalDistanceFieldMipWorldToUVBias.Bind(ParameterMap, TEXT("GlobalDistanceFieldMipWorldToUVBias"));
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GlobalDistanceFieldClipmapSizeInPages.Bind(ParameterMap, TEXT("GlobalDistanceFieldClipmapSizeInPages"));
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GlobalDistanceFieldInvPageAtlasSize.Bind(ParameterMap, TEXT("GlobalDistanceFieldInvPageAtlasSize"));
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GlobalVolumeDimension.Bind(ParameterMap,TEXT("GlobalVolumeDimension"));
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GlobalVolumeTexelSize.Bind(ParameterMap,TEXT("GlobalVolumeTexelSize"));
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MaxGlobalDFAOConeDistance.Bind(ParameterMap,TEXT("MaxGlobalDFAOConeDistance"));
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NumGlobalSDFClipmaps.Bind(ParameterMap,TEXT("NumGlobalSDFClipmaps"));
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}
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bool IsBound() const
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{
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return GlobalVolumeCenterAndExtent.IsBound() || GlobalVolumeWorldToUVAddAndMul.IsBound();
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}
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friend FArchive& operator<<(FArchive& Ar,FGlobalDistanceFieldParameters& Parameters)
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{
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Ar << Parameters.GlobalDistanceFieldPageAtlasTexture;
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Ar << Parameters.GlobalDistanceFieldPageTableTexture;
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Ar << Parameters.GlobalDistanceFieldMipTexture;
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Ar << Parameters.GlobalVolumeCenterAndExtent;
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Ar << Parameters.GlobalVolumeWorldToUVAddAndMul;
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Ar << Parameters.GlobalDistanceFieldMipWorldToUVScale;
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Ar << Parameters.GlobalDistanceFieldMipWorldToUVBias;
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Ar << Parameters.GlobalDistanceFieldMipFactor;
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Ar << Parameters.GlobalDistanceFieldMipTransition;
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Ar << Parameters.GlobalDistanceFieldClipmapSizeInPages;
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Ar << Parameters.GlobalDistanceFieldInvPageAtlasSize;
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Ar << Parameters.GlobalVolumeDimension;
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Ar << Parameters.GlobalVolumeTexelSize;
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Ar << Parameters.MaxGlobalDFAOConeDistance;
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Ar << Parameters.NumGlobalSDFClipmaps;
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return Ar;
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}
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template<typename ShaderRHIParamRef>
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FORCEINLINE_DEBUGGABLE void Set(FRHICommandList& RHICmdList, const ShaderRHIParamRef ShaderRHI, const FGlobalDistanceFieldParameterData& ParameterData) const
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{
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if (IsBound())
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{
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SetTextureParameter(RHICmdList, ShaderRHI, GlobalDistanceFieldPageAtlasTexture, ParameterData.PageAtlasTexture ? ParameterData.PageAtlasTexture : GBlackVolumeTexture->TextureRHI.GetReference());
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SetTextureParameter(RHICmdList, ShaderRHI, GlobalDistanceFieldPageTableTexture, ParameterData.PageTableTexture ? ParameterData.PageTableTexture : GBlackVolumeTexture->TextureRHI.GetReference());
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SetTextureParameter(RHICmdList, ShaderRHI, GlobalDistanceFieldMipTexture, ParameterData.MipTexture ? ParameterData.MipTexture : GBlackVolumeTexture->TextureRHI.GetReference());
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SetShaderValueArray(RHICmdList, ShaderRHI, GlobalVolumeCenterAndExtent, ParameterData.CenterAndExtent, GMaxGlobalDistanceFieldClipmaps);
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SetShaderValueArray(RHICmdList, ShaderRHI, GlobalVolumeWorldToUVAddAndMul, ParameterData.WorldToUVAddAndMul, GMaxGlobalDistanceFieldClipmaps);
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SetShaderValueArray(RHICmdList, ShaderRHI, GlobalDistanceFieldMipWorldToUVScale, ParameterData.MipWorldToUVScale, GMaxGlobalDistanceFieldClipmaps);
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SetShaderValueArray(RHICmdList, ShaderRHI, GlobalDistanceFieldMipWorldToUVBias, ParameterData.MipWorldToUVBias, GMaxGlobalDistanceFieldClipmaps);
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SetShaderValue(RHICmdList, ShaderRHI, GlobalDistanceFieldMipFactor, ParameterData.MipFactor);
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SetShaderValue(RHICmdList, ShaderRHI, GlobalDistanceFieldMipTransition, ParameterData.MipTransition);
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SetShaderValue(RHICmdList, ShaderRHI, GlobalDistanceFieldClipmapSizeInPages, ParameterData.ClipmapSizeInPages);
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SetShaderValue(RHICmdList, ShaderRHI, GlobalDistanceFieldInvPageAtlasSize, (FVector3f)ParameterData.InvPageAtlasSize);
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SetShaderValue(RHICmdList, ShaderRHI, GlobalVolumeDimension, ParameterData.GlobalDFResolution);
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SetShaderValue(RHICmdList, ShaderRHI, GlobalVolumeTexelSize, 1.0f / ParameterData.GlobalDFResolution);
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SetShaderValue(RHICmdList, ShaderRHI, MaxGlobalDFAOConeDistance, ParameterData.MaxDFAOConeDistance);
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SetShaderValue(RHICmdList, ShaderRHI, NumGlobalSDFClipmaps, ParameterData.NumGlobalSDFClipmaps);
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}
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}
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private:
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LAYOUT_FIELD(FShaderResourceParameter, GlobalDistanceFieldPageAtlasTexture)
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LAYOUT_FIELD(FShaderResourceParameter, GlobalDistanceFieldPageTableTexture)
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LAYOUT_FIELD(FShaderResourceParameter, GlobalDistanceFieldMipTexture)
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LAYOUT_FIELD(FShaderParameter, GlobalVolumeCenterAndExtent)
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LAYOUT_FIELD(FShaderParameter, GlobalVolumeWorldToUVAddAndMul)
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LAYOUT_FIELD(FShaderParameter, GlobalDistanceFieldMipWorldToUVScale)
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LAYOUT_FIELD(FShaderParameter, GlobalDistanceFieldMipWorldToUVBias)
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LAYOUT_FIELD(FShaderParameter, GlobalDistanceFieldMipFactor)
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LAYOUT_FIELD(FShaderParameter, GlobalDistanceFieldMipTransition)
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LAYOUT_FIELD(FShaderParameter, GlobalDistanceFieldClipmapSizeInPages)
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LAYOUT_FIELD(FShaderParameter, GlobalDistanceFieldInvPageAtlasSize)
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LAYOUT_FIELD(FShaderParameter, GlobalVolumeDimension)
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LAYOUT_FIELD(FShaderParameter, GlobalVolumeTexelSize)
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LAYOUT_FIELD(FShaderParameter, MaxGlobalDFAOConeDistance)
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LAYOUT_FIELD(FShaderParameter, NumGlobalSDFClipmaps)
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};
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