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bfd7b3736c
Distance field scene updates are no longer tracked when the project setting r.GenerateMeshDistanceFields is disabled [CL 2519945 by Daniel Wright in Main branch]
1122 lines
45 KiB
C++
1122 lines
45 KiB
C++
// Copyright 1998-2015 Epic Games, Inc. All Rights Reserved.
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/*=============================================================================
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DistanceFieldSurfaceCacheLighting.cpp
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=============================================================================*/
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#include "RendererPrivate.h"
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#include "RendererPrivate.h"
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#include "ScenePrivate.h"
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#include "UniformBuffer.h"
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#include "ShaderParameters.h"
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#include "DistanceFieldLightingShared.h"
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#include "DistanceFieldSurfaceCacheLighting.h"
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#include "DistanceFieldGlobalIllumination.h"
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#include "RHICommandList.h"
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#include "SceneUtils.h"
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float GAOMaxObjectBoundingRadius = 50000;
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FAutoConsoleVariableRef CVarAOMaxObjectBoundingRadius(
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TEXT("r.AOMaxObjectBoundingRadius"),
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GAOMaxObjectBoundingRadius,
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TEXT("Objects larger than this will not contribute to AO calculations, to improve performance."),
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ECVF_Cheat | ECVF_RenderThreadSafe
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);
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int32 GAOLogObjectBufferReallocation = 0;
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FAutoConsoleVariableRef CVarAOLogObjectBufferReallocation(
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TEXT("r.AOLogObjectBufferReallocation"),
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GAOLogObjectBufferReallocation,
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TEXT(""),
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ECVF_Cheat | ECVF_RenderThreadSafe
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);
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// Must match equivalent shader defines
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int32 FDistanceFieldObjectBuffers::ObjectDataStride = 16;
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int32 FDistanceFieldCulledObjectBuffers::ObjectDataStride = 16;
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int32 FDistanceFieldCulledObjectBuffers::ObjectBoxBoundsStride = 5;
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// In float4's. Must match corresponding usf definition
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int32 UploadObjectDataStride = 1 + FDistanceFieldObjectBuffers::ObjectDataStride;
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class FDistanceFieldUploadDataResource : public FRenderResource
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{
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public:
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FCPUUpdatedBuffer UploadData;
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FDistanceFieldUploadDataResource()
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{
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UploadData.Format = PF_A32B32G32R32F;
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UploadData.Stride = UploadObjectDataStride;
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}
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virtual void InitDynamicRHI() override
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{
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UploadData.Initialize();
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}
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virtual void ReleaseDynamicRHI() override
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{
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UploadData.Release();
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}
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};
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TGlobalResource<FDistanceFieldUploadDataResource> GDistanceFieldUploadData;
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class FDistanceFieldUploadIndicesResource : public FRenderResource
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{
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public:
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FCPUUpdatedBuffer UploadIndices;
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FDistanceFieldUploadIndicesResource()
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{
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UploadIndices.Format = PF_R32_UINT;
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UploadIndices.Stride = 1;
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}
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virtual void InitDynamicRHI() override
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{
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UploadIndices.Initialize();
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}
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virtual void ReleaseDynamicRHI() override
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{
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UploadIndices.Release();
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}
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};
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TGlobalResource<FDistanceFieldUploadIndicesResource> GDistanceFieldUploadIndices;
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class FDistanceFieldRemoveIndicesResource : public FRenderResource
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{
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public:
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FCPUUpdatedBuffer RemoveIndices;
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FDistanceFieldRemoveIndicesResource()
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{
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RemoveIndices.Format = PF_R32G32B32A32_UINT;
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RemoveIndices.Stride = 1;
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}
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virtual void InitDynamicRHI() override
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{
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RemoveIndices.Initialize();
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}
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virtual void ReleaseDynamicRHI() override
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{
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RemoveIndices.Release();
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}
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};
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TGlobalResource<FDistanceFieldRemoveIndicesResource> GDistanceFieldRemoveIndices;
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uint32 UpdateObjectsGroupSize = 64;
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class FUploadObjectsToBufferCS : public FGlobalShader
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{
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DECLARE_SHADER_TYPE(FUploadObjectsToBufferCS,Global)
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public:
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static bool ShouldCache(EShaderPlatform Platform)
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{
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return IsFeatureLevelSupported(Platform, ERHIFeatureLevel::SM5) && DoesPlatformSupportDistanceFieldAO(Platform);
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}
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static void ModifyCompilationEnvironment(EShaderPlatform Platform, FShaderCompilerEnvironment& OutEnvironment)
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{
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FGlobalShader::ModifyCompilationEnvironment(Platform,OutEnvironment);
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OutEnvironment.SetDefine(TEXT("UPDATEOBJECTS_THREADGROUP_SIZE"), UpdateObjectsGroupSize);
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}
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FUploadObjectsToBufferCS(const ShaderMetaType::CompiledShaderInitializerType& Initializer)
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: FGlobalShader(Initializer)
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{
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NumUploadOperations.Bind(Initializer.ParameterMap, TEXT("NumUploadOperations"));
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UploadOperationIndices.Bind(Initializer.ParameterMap, TEXT("UploadOperationIndices"));
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UploadOperationData.Bind(Initializer.ParameterMap, TEXT("UploadOperationData"));
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ObjectBufferParameters.Bind(Initializer.ParameterMap);
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}
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FUploadObjectsToBufferCS()
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{
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}
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void SetParameters(FRHICommandList& RHICmdList, const FScene* Scene, uint32 NumUploadOperationsValue, FShaderResourceViewRHIParamRef InUploadOperationIndices, FShaderResourceViewRHIParamRef InUploadOperationData)
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{
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FComputeShaderRHIParamRef ShaderRHI = GetComputeShader();
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SetShaderValue(RHICmdList, ShaderRHI, NumUploadOperations, NumUploadOperationsValue);
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SetSRVParameter(RHICmdList, ShaderRHI, UploadOperationIndices, InUploadOperationIndices);
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SetSRVParameter(RHICmdList, ShaderRHI, UploadOperationData, InUploadOperationData);
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ObjectBufferParameters.Set(RHICmdList, ShaderRHI, *(Scene->DistanceFieldSceneData.ObjectBuffers), Scene->DistanceFieldSceneData.NumObjectsInBuffer);
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}
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void UnsetParameters(FRHICommandList& RHICmdList)
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{
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ObjectBufferParameters.UnsetParameters(RHICmdList, GetComputeShader());
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}
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virtual bool Serialize(FArchive& Ar) override
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{
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bool bShaderHasOutdatedParameters = FGlobalShader::Serialize(Ar);
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Ar << NumUploadOperations;
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Ar << UploadOperationIndices;
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Ar << UploadOperationData;
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Ar << ObjectBufferParameters;
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return bShaderHasOutdatedParameters;
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}
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private:
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FShaderParameter NumUploadOperations;
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FShaderResourceParameter UploadOperationIndices;
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FShaderResourceParameter UploadOperationData;
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FDistanceFieldObjectBufferParameters ObjectBufferParameters;
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};
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IMPLEMENT_SHADER_TYPE(,FUploadObjectsToBufferCS,TEXT("DistanceFieldSurfaceCacheLightingCompute"),TEXT("UploadObjectsToBufferCS"),SF_Compute);
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class FCopyObjectBufferCS : public FGlobalShader
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{
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DECLARE_SHADER_TYPE(FCopyObjectBufferCS,Global)
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public:
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static bool ShouldCache(EShaderPlatform Platform)
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{
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return IsFeatureLevelSupported(Platform, ERHIFeatureLevel::SM5) && DoesPlatformSupportDistanceFieldAO(Platform);
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}
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static void ModifyCompilationEnvironment(EShaderPlatform Platform, FShaderCompilerEnvironment& OutEnvironment)
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{
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FGlobalShader::ModifyCompilationEnvironment(Platform,OutEnvironment);
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OutEnvironment.SetDefine(TEXT("UPDATEOBJECTS_THREADGROUP_SIZE"), UpdateObjectsGroupSize);
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}
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FCopyObjectBufferCS(const ShaderMetaType::CompiledShaderInitializerType& Initializer)
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: FGlobalShader(Initializer)
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{
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CopyObjectBounds.Bind(Initializer.ParameterMap, TEXT("CopyObjectBounds"));
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CopyObjectData.Bind(Initializer.ParameterMap, TEXT("CopyObjectData"));
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ObjectBufferParameters.Bind(Initializer.ParameterMap);
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}
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FCopyObjectBufferCS()
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{
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}
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void SetParameters(FRHICommandList& RHICmdList, FDistanceFieldObjectBuffers& ObjectBuffersSource, FDistanceFieldObjectBuffers& ObjectBuffersDest, int32 NumObjectsValue)
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{
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FComputeShaderRHIParamRef ShaderRHI = GetComputeShader();
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CopyObjectBounds.SetBuffer(RHICmdList, ShaderRHI, ObjectBuffersDest.Bounds);
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CopyObjectData.SetBuffer(RHICmdList, ShaderRHI, ObjectBuffersDest.Data);
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ObjectBufferParameters.Set(RHICmdList, ShaderRHI, ObjectBuffersSource, NumObjectsValue);
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}
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void UnsetParameters(FRHICommandList& RHICmdList)
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{
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ObjectBufferParameters.UnsetParameters(RHICmdList, GetComputeShader());
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CopyObjectBounds.UnsetUAV(RHICmdList, GetComputeShader());
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CopyObjectData.UnsetUAV(RHICmdList, GetComputeShader());
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}
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virtual bool Serialize(FArchive& Ar) override
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{
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bool bShaderHasOutdatedParameters = FGlobalShader::Serialize(Ar);
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Ar << CopyObjectBounds;
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Ar << CopyObjectData;
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Ar << ObjectBufferParameters;
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return bShaderHasOutdatedParameters;
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}
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private:
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FRWShaderParameter CopyObjectBounds;
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FRWShaderParameter CopyObjectData;
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FDistanceFieldObjectBufferParameters ObjectBufferParameters;
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};
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IMPLEMENT_SHADER_TYPE(,FCopyObjectBufferCS,TEXT("DistanceFieldSurfaceCacheLightingCompute"),TEXT("CopyObjectBufferCS"),SF_Compute);
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class FCopySurfelBufferCS : public FGlobalShader
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{
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DECLARE_SHADER_TYPE(FCopySurfelBufferCS,Global)
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public:
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static bool ShouldCache(EShaderPlatform Platform)
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{
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return IsFeatureLevelSupported(Platform, ERHIFeatureLevel::SM5) && DoesPlatformSupportDistanceFieldGI(Platform);
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}
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static void ModifyCompilationEnvironment(EShaderPlatform Platform, FShaderCompilerEnvironment& OutEnvironment)
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{
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FGlobalShader::ModifyCompilationEnvironment(Platform,OutEnvironment);
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OutEnvironment.SetDefine(TEXT("UPDATEOBJECTS_THREADGROUP_SIZE"), UpdateObjectsGroupSize);
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}
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FCopySurfelBufferCS(const ShaderMetaType::CompiledShaderInitializerType& Initializer)
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: FGlobalShader(Initializer)
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{
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CopyInterpolatedVertexData.Bind(Initializer.ParameterMap, TEXT("CopyInterpolatedVertexData"));
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CopySurfelData.Bind(Initializer.ParameterMap, TEXT("CopySurfelData"));
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SurfelBufferParameters.Bind(Initializer.ParameterMap);
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NumSurfels.Bind(Initializer.ParameterMap, TEXT("NumSurfels"));
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}
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FCopySurfelBufferCS()
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{
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}
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void SetParameters(FRHICommandList& RHICmdList, const FSurfelBuffers& SurfelBuffersSource, const FInstancedSurfelBuffers& InstancedSurfelBuffersSource, FSurfelBuffers& SurfelBuffersDest, int32 NumSurfelsValue)
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{
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FComputeShaderRHIParamRef ShaderRHI = GetComputeShader();
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CopyInterpolatedVertexData.SetBuffer(RHICmdList, ShaderRHI, SurfelBuffersDest.InterpolatedVertexData);
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CopySurfelData.SetBuffer(RHICmdList, ShaderRHI, SurfelBuffersDest.Surfels);
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SurfelBufferParameters.Set(RHICmdList, ShaderRHI, SurfelBuffersSource, InstancedSurfelBuffersSource);
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SetShaderValue(RHICmdList, ShaderRHI, NumSurfels, NumSurfelsValue);
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}
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void UnsetParameters(FRHICommandList& RHICmdList)
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{
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SurfelBufferParameters.UnsetParameters(RHICmdList, GetComputeShader());
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CopyInterpolatedVertexData.UnsetUAV(RHICmdList, GetComputeShader());
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CopySurfelData.UnsetUAV(RHICmdList, GetComputeShader());
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}
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virtual bool Serialize(FArchive& Ar) override
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{
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bool bShaderHasOutdatedParameters = FGlobalShader::Serialize(Ar);
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Ar << CopyInterpolatedVertexData;
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Ar << CopySurfelData;
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Ar << SurfelBufferParameters;
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Ar << NumSurfels;
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return bShaderHasOutdatedParameters;
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}
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private:
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FRWShaderParameter CopyInterpolatedVertexData;
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FRWShaderParameter CopySurfelData;
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FSurfelBufferParameters SurfelBufferParameters;
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FShaderParameter NumSurfels;
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};
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IMPLEMENT_SHADER_TYPE(,FCopySurfelBufferCS,TEXT("SurfelTree"),TEXT("CopySurfelBufferCS"),SF_Compute);
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class FCopyVPLFluxBufferCS : public FGlobalShader
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{
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DECLARE_SHADER_TYPE(FCopyVPLFluxBufferCS,Global)
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public:
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static bool ShouldCache(EShaderPlatform Platform)
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{
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return IsFeatureLevelSupported(Platform, ERHIFeatureLevel::SM5) && DoesPlatformSupportDistanceFieldAO(Platform);
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}
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static void ModifyCompilationEnvironment(EShaderPlatform Platform, FShaderCompilerEnvironment& OutEnvironment)
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{
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FGlobalShader::ModifyCompilationEnvironment(Platform,OutEnvironment);
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OutEnvironment.SetDefine(TEXT("UPDATEOBJECTS_THREADGROUP_SIZE"), UpdateObjectsGroupSize);
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}
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FCopyVPLFluxBufferCS(const ShaderMetaType::CompiledShaderInitializerType& Initializer)
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: FGlobalShader(Initializer)
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{
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CopyVPLFlux.Bind(Initializer.ParameterMap, TEXT("CopyVPLFlux"));
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SurfelBufferParameters.Bind(Initializer.ParameterMap);
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NumSurfels.Bind(Initializer.ParameterMap, TEXT("NumSurfels"));
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}
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FCopyVPLFluxBufferCS()
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{
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}
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void SetParameters(FRHICommandList& RHICmdList, const FSurfelBuffers& SurfelBuffersSource, const FInstancedSurfelBuffers& InstancedSurfelBuffersSource, FInstancedSurfelBuffers& InstancedSurfelBuffersDest, int32 NumSurfelsValue)
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{
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FComputeShaderRHIParamRef ShaderRHI = GetComputeShader();
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CopyVPLFlux.SetBuffer(RHICmdList, ShaderRHI, InstancedSurfelBuffersDest.VPLFlux);
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SurfelBufferParameters.Set(RHICmdList, ShaderRHI, SurfelBuffersSource, InstancedSurfelBuffersSource);
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SetShaderValue(RHICmdList, ShaderRHI, NumSurfels, NumSurfelsValue);
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}
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void UnsetParameters(FRHICommandList& RHICmdList)
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{
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SurfelBufferParameters.UnsetParameters(RHICmdList, GetComputeShader());
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CopyVPLFlux.UnsetUAV(RHICmdList, GetComputeShader());
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}
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virtual bool Serialize(FArchive& Ar) override
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{
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bool bShaderHasOutdatedParameters = FGlobalShader::Serialize(Ar);
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Ar << CopyVPLFlux;
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Ar << SurfelBufferParameters;
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Ar << NumSurfels;
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return bShaderHasOutdatedParameters;
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}
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private:
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FRWShaderParameter CopyVPLFlux;
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FSurfelBufferParameters SurfelBufferParameters;
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FShaderParameter NumSurfels;
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};
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IMPLEMENT_SHADER_TYPE(,FCopyVPLFluxBufferCS,TEXT("SurfelTree"),TEXT("CopyVPLFluxBufferCS"),SF_Compute);
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template<bool bRemoveFromSameBuffer>
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class TRemoveObjectsFromBufferCS : public FGlobalShader
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{
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DECLARE_SHADER_TYPE(TRemoveObjectsFromBufferCS,Global)
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public:
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static bool ShouldCache(EShaderPlatform Platform)
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{
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return IsFeatureLevelSupported(Platform, ERHIFeatureLevel::SM5) && DoesPlatformSupportDistanceFieldAO(Platform);
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}
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static void ModifyCompilationEnvironment(EShaderPlatform Platform, FShaderCompilerEnvironment& OutEnvironment)
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{
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FGlobalShader::ModifyCompilationEnvironment(Platform,OutEnvironment);
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OutEnvironment.SetDefine(TEXT("UPDATEOBJECTS_THREADGROUP_SIZE"), UpdateObjectsGroupSize);
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OutEnvironment.SetDefine(TEXT("REMOVE_FROM_SAME_BUFFER"), bRemoveFromSameBuffer ? TEXT("1") : TEXT("0"));
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}
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TRemoveObjectsFromBufferCS(const ShaderMetaType::CompiledShaderInitializerType& Initializer)
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: FGlobalShader(Initializer)
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{
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NumRemoveOperations.Bind(Initializer.ParameterMap, TEXT("NumRemoveOperations"));
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RemoveOperationIndices.Bind(Initializer.ParameterMap, TEXT("RemoveOperationIndices"));
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ObjectBufferParameters.Bind(Initializer.ParameterMap);
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ObjectBounds2.Bind(Initializer.ParameterMap, TEXT("ObjectBounds2"));
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ObjectData2.Bind(Initializer.ParameterMap, TEXT("ObjectData2"));
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}
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TRemoveObjectsFromBufferCS()
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{
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}
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void SetParameters(
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FRHICommandList& RHICmdList,
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const FScene* Scene,
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uint32 NumRemoveOperationsValue,
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FShaderResourceViewRHIParamRef InRemoveOperationIndices,
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FShaderResourceViewRHIParamRef InObjectBounds2,
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FShaderResourceViewRHIParamRef InObjectData2)
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{
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FComputeShaderRHIParamRef ShaderRHI = GetComputeShader();
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SetShaderValue(RHICmdList, ShaderRHI, NumRemoveOperations, NumRemoveOperationsValue);
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SetSRVParameter(RHICmdList, ShaderRHI, RemoveOperationIndices, InRemoveOperationIndices);
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ObjectBufferParameters.Set(RHICmdList, ShaderRHI, *(Scene->DistanceFieldSceneData.ObjectBuffers), Scene->DistanceFieldSceneData.NumObjectsInBuffer);
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SetSRVParameter(RHICmdList, ShaderRHI, ObjectBounds2, InObjectBounds2);
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SetSRVParameter(RHICmdList, ShaderRHI, ObjectData2, InObjectData2);
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}
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void UnsetParameters(FRHICommandList& RHICmdList)
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{
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ObjectBufferParameters.UnsetParameters(RHICmdList, GetComputeShader());
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}
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virtual bool Serialize(FArchive& Ar) override
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{
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bool bShaderHasOutdatedParameters = FGlobalShader::Serialize(Ar);
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Ar << NumRemoveOperations;
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Ar << RemoveOperationIndices;
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Ar << ObjectBufferParameters;
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Ar << ObjectBounds2;
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Ar << ObjectData2;
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return bShaderHasOutdatedParameters;
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}
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private:
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FShaderParameter NumRemoveOperations;
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FShaderResourceParameter RemoveOperationIndices;
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FDistanceFieldObjectBufferParameters ObjectBufferParameters;
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FShaderResourceParameter ObjectBounds2;
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FShaderResourceParameter ObjectData2;
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};
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IMPLEMENT_SHADER_TYPE(template<>,TRemoveObjectsFromBufferCS<true>,TEXT("DistanceFieldSurfaceCacheLightingCompute"),TEXT("RemoveObjectsFromBufferCS"),SF_Compute);
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IMPLEMENT_SHADER_TYPE(template<>,TRemoveObjectsFromBufferCS<false>,TEXT("DistanceFieldSurfaceCacheLightingCompute"),TEXT("RemoveObjectsFromBufferCS"),SF_Compute);
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void FSurfelBufferAllocator::RemovePrimitive(const FPrimitiveSceneInfo* Primitive)
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{
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FPrimitiveSurfelAllocation Allocation;
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if (Allocations.RemoveAndCopyValue(Primitive, Allocation))
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{
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bool bMergedWithExisting = false;
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FPrimitiveSurfelFreeEntry FreeEntry(Allocation.Offset, Allocation.GetTotalNumSurfels());
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// Note: only does one merge
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//@todo - keep free list sorted then can binary search
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for (int32 FreeIndex = 0; FreeIndex < FreeList.Num(); FreeIndex++)
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{
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if (FreeList[FreeIndex].Offset == FreeEntry.Offset + FreeEntry.NumSurfels)
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{
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FreeList[FreeIndex].Offset = FreeEntry.Offset;
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FreeList[FreeIndex].NumSurfels += FreeEntry.NumSurfels;
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bMergedWithExisting = true;
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break;
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}
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else if (FreeList[FreeIndex].Offset + FreeList[FreeIndex].NumSurfels == FreeEntry.Offset)
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{
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FreeList[FreeIndex].NumSurfels += FreeEntry.NumSurfels;
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bMergedWithExisting = true;
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break;
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}
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}
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if (!bMergedWithExisting)
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{
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FreeList.Add(FreeEntry);
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}
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}
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}
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void FSurfelBufferAllocator::AddPrimitive(const FPrimitiveSceneInfo* PrimitiveSceneInfo, int32 PrimitiveLOD0Surfels, int32 PrimitiveNumSurfels, int32 NumInstances)
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{
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int32 BestFreeAllocationIndex = -1;
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|
for (int32 FreeIndex = 0; FreeIndex < FreeList.Num(); FreeIndex++)
|
|
{
|
|
const FPrimitiveSurfelFreeEntry& CurrentFreeEntry = FreeList[FreeIndex];
|
|
|
|
if (CurrentFreeEntry.NumSurfels >= PrimitiveNumSurfels * NumInstances
|
|
&& (BestFreeAllocationIndex == -1
|
|
|| CurrentFreeEntry.NumSurfels < FreeList[BestFreeAllocationIndex].NumSurfels))
|
|
{
|
|
BestFreeAllocationIndex = FreeIndex;
|
|
}
|
|
}
|
|
|
|
if (BestFreeAllocationIndex != -1)
|
|
{
|
|
FPrimitiveSurfelFreeEntry FreeEntry = FreeList[BestFreeAllocationIndex];
|
|
|
|
if (FreeEntry.NumSurfels == PrimitiveNumSurfels * NumInstances)
|
|
{
|
|
// Existing allocation matches exactly, remove it from the free list
|
|
FreeList.RemoveAtSwap(BestFreeAllocationIndex);
|
|
}
|
|
else
|
|
{
|
|
// Replace with the remaining free range
|
|
FreeList[BestFreeAllocationIndex] = FPrimitiveSurfelFreeEntry(FreeEntry.Offset + PrimitiveNumSurfels * NumInstances, FreeEntry.NumSurfels - PrimitiveNumSurfels * NumInstances);
|
|
}
|
|
|
|
Allocations.Add(PrimitiveSceneInfo, FPrimitiveSurfelAllocation(FreeEntry.Offset, PrimitiveLOD0Surfels, PrimitiveNumSurfels, NumInstances));
|
|
}
|
|
else
|
|
{
|
|
// Add a new allocation to the end of the buffer
|
|
Allocations.Add(PrimitiveSceneInfo, FPrimitiveSurfelAllocation(NumSurfelsInBuffer, PrimitiveLOD0Surfels, PrimitiveNumSurfels, NumInstances));
|
|
NumSurfelsInBuffer += PrimitiveNumSurfels * NumInstances;
|
|
}
|
|
}
|
|
|
|
void UpdateGlobalDistanceFieldObjectRemoves(FRHICommandListImmediate& RHICmdList, FScene* Scene)
|
|
{
|
|
FDistanceFieldSceneData& DistanceFieldSceneData = Scene->DistanceFieldSceneData;
|
|
|
|
TArray<FIntRect> RemoveObjectIndices;
|
|
FDistanceFieldObjectBuffers* TemporaryCopySourceBuffers = NULL;
|
|
|
|
if (DistanceFieldSceneData.PendingRemoveOperations.Num() > 0)
|
|
{
|
|
TArray<int32, SceneRenderingAllocator> PendingRemoveOperations;
|
|
|
|
for (int32 RemoveIndex = 0; RemoveIndex < DistanceFieldSceneData.PendingRemoveOperations.Num(); RemoveIndex++)
|
|
{
|
|
// Can't dereference the primitive here, it has already been deleted
|
|
const FPrimitiveSceneInfo* Primitive = DistanceFieldSceneData.PendingRemoveOperations[RemoveIndex].Primitive;
|
|
DistanceFieldSceneData.SurfelAllocations.RemovePrimitive(Primitive);
|
|
DistanceFieldSceneData.InstancedSurfelAllocations.RemovePrimitive(Primitive);
|
|
PendingRemoveOperations.Append(DistanceFieldSceneData.PendingRemoveOperations[RemoveIndex].DistanceFieldInstanceIndices);
|
|
}
|
|
|
|
check(DistanceFieldSceneData.NumObjectsInBuffer >= PendingRemoveOperations.Num());
|
|
|
|
// Sort from smallest to largest
|
|
PendingRemoveOperations.Sort();
|
|
|
|
// We have multiple remove requests enqueued in PendingRemoveOperations, can only use the RemoveAtSwap version when there won't be collisions
|
|
const bool bUseRemoveAtSwap = PendingRemoveOperations.Last() < DistanceFieldSceneData.NumObjectsInBuffer - PendingRemoveOperations.Num();
|
|
|
|
if (bUseRemoveAtSwap)
|
|
{
|
|
// Remove everything in parallel in the same buffer with a RemoveAtSwap algorithm
|
|
for (int32 RemovePrimitiveIndex = 0; RemovePrimitiveIndex < PendingRemoveOperations.Num(); RemovePrimitiveIndex++)
|
|
{
|
|
DistanceFieldSceneData.NumObjectsInBuffer--;
|
|
const int32 RemoveIndex = PendingRemoveOperations[RemovePrimitiveIndex];
|
|
const int32 MoveFromIndex = DistanceFieldSceneData.NumObjectsInBuffer;
|
|
|
|
check(RemoveIndex != MoveFromIndex);
|
|
// Queue a compute shader move
|
|
RemoveObjectIndices.Add(FIntRect(RemoveIndex, MoveFromIndex, 0, 0));
|
|
|
|
// Fixup indices of the primitive that is being moved
|
|
FPrimitiveAndInstance& PrimitiveAndInstanceBeingMoved = DistanceFieldSceneData.PrimitiveInstanceMapping[MoveFromIndex];
|
|
check(PrimitiveAndInstanceBeingMoved.Primitive && PrimitiveAndInstanceBeingMoved.Primitive->DistanceFieldInstanceIndices.Num() > 0);
|
|
PrimitiveAndInstanceBeingMoved.Primitive->DistanceFieldInstanceIndices[PrimitiveAndInstanceBeingMoved.InstanceIndex] = RemoveIndex;
|
|
|
|
DistanceFieldSceneData.PrimitiveInstanceMapping.RemoveAtSwap(RemoveIndex);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
const double StartTime = FPlatformTime::Seconds();
|
|
|
|
// Have to copy the object data to allow parallel removing
|
|
TemporaryCopySourceBuffers = DistanceFieldSceneData.ObjectBuffers;
|
|
DistanceFieldSceneData.ObjectBuffers = new FDistanceFieldObjectBuffers();
|
|
DistanceFieldSceneData.ObjectBuffers->MaxObjects = TemporaryCopySourceBuffers->MaxObjects;
|
|
DistanceFieldSceneData.ObjectBuffers->Initialize();
|
|
|
|
TArray<FPrimitiveAndInstance> OriginalPrimitiveInstanceMapping = DistanceFieldSceneData.PrimitiveInstanceMapping;
|
|
DistanceFieldSceneData.PrimitiveInstanceMapping.Reset();
|
|
|
|
const int32 NumDestObjects = DistanceFieldSceneData.NumObjectsInBuffer - PendingRemoveOperations.Num();
|
|
int32 SourceIndex = 0;
|
|
int32 NextPendingRemoveIndex = 0;
|
|
|
|
for (int32 DestinationIndex = 0; DestinationIndex < NumDestObjects; DestinationIndex++)
|
|
{
|
|
while (NextPendingRemoveIndex < PendingRemoveOperations.Num()
|
|
&& PendingRemoveOperations[NextPendingRemoveIndex] == SourceIndex)
|
|
{
|
|
NextPendingRemoveIndex++;
|
|
SourceIndex++;
|
|
}
|
|
|
|
// Queue a compute shader move
|
|
RemoveObjectIndices.Add(FIntRect(DestinationIndex, SourceIndex, 0, 0));
|
|
|
|
// Fixup indices of the primitive that is being moved
|
|
FPrimitiveAndInstance& PrimitiveAndInstanceBeingMoved = OriginalPrimitiveInstanceMapping[SourceIndex];
|
|
check(PrimitiveAndInstanceBeingMoved.Primitive && PrimitiveAndInstanceBeingMoved.Primitive->DistanceFieldInstanceIndices.Num() > 0);
|
|
PrimitiveAndInstanceBeingMoved.Primitive->DistanceFieldInstanceIndices[PrimitiveAndInstanceBeingMoved.InstanceIndex] = DestinationIndex;
|
|
|
|
check(DistanceFieldSceneData.PrimitiveInstanceMapping.Num() == DestinationIndex);
|
|
DistanceFieldSceneData.PrimitiveInstanceMapping.Add(PrimitiveAndInstanceBeingMoved);
|
|
|
|
SourceIndex++;
|
|
}
|
|
|
|
DistanceFieldSceneData.NumObjectsInBuffer = NumDestObjects;
|
|
|
|
if (GAOLogObjectBufferReallocation)
|
|
{
|
|
const float ElapsedTime = (float)(FPlatformTime::Seconds() - StartTime);
|
|
UE_LOG(LogDistanceField,Warning,TEXT("Global object buffer realloc %.3fs"), ElapsedTime);
|
|
}
|
|
|
|
/*
|
|
// Have to remove one at a time while any entries to remove are at the end of the buffer
|
|
DistanceFieldSceneData.NumObjectsInBuffer--;
|
|
const int32 RemoveIndex = DistanceFieldSceneData.PendingRemoveOperations[ParallelConflictIndex];
|
|
const int32 MoveFromIndex = DistanceFieldSceneData.NumObjectsInBuffer;
|
|
|
|
if (RemoveIndex != MoveFromIndex)
|
|
{
|
|
// Queue a compute shader move
|
|
RemoveObjectIndices.Add(FIntRect(RemoveIndex, MoveFromIndex, 0, 0));
|
|
|
|
// Fixup indices of the primitive that is being moved
|
|
FPrimitiveAndInstance& PrimitiveAndInstanceBeingMoved = DistanceFieldSceneData.PrimitiveInstanceMapping[MoveFromIndex];
|
|
check(PrimitiveAndInstanceBeingMoved.Primitive && PrimitiveAndInstanceBeingMoved.Primitive->DistanceFieldInstanceIndices.Num() > 0);
|
|
PrimitiveAndInstanceBeingMoved.Primitive->DistanceFieldInstanceIndices[PrimitiveAndInstanceBeingMoved.InstanceIndex] = RemoveIndex;
|
|
}
|
|
|
|
DistanceFieldSceneData.PrimitiveInstanceMapping.RemoveAtSwap(RemoveIndex);
|
|
DistanceFieldSceneData.PendingRemoveOperations.RemoveAtSwap(ParallelConflictIndex);
|
|
*/
|
|
}
|
|
|
|
PendingRemoveOperations.Reset();
|
|
DistanceFieldSceneData.PendingRemoveOperations.Reset();
|
|
|
|
if (RemoveObjectIndices.Num() > 0)
|
|
{
|
|
if (RemoveObjectIndices.Num() > GDistanceFieldRemoveIndices.RemoveIndices.MaxElements)
|
|
{
|
|
GDistanceFieldRemoveIndices.RemoveIndices.MaxElements = RemoveObjectIndices.Num() * 5 / 4;
|
|
GDistanceFieldRemoveIndices.RemoveIndices.Release();
|
|
GDistanceFieldRemoveIndices.RemoveIndices.Initialize();
|
|
}
|
|
|
|
void* LockedBuffer = RHILockVertexBuffer(GDistanceFieldRemoveIndices.RemoveIndices.Buffer, 0, GDistanceFieldRemoveIndices.RemoveIndices.Buffer->GetSize(), RLM_WriteOnly);
|
|
const uint32 MemcpySize = RemoveObjectIndices.GetTypeSize() * RemoveObjectIndices.Num();
|
|
check(GDistanceFieldRemoveIndices.RemoveIndices.Buffer->GetSize() >= MemcpySize);
|
|
FPlatformMemory::Memcpy(LockedBuffer, RemoveObjectIndices.GetData(), MemcpySize);
|
|
RHIUnlockVertexBuffer(GDistanceFieldRemoveIndices.RemoveIndices.Buffer);
|
|
|
|
if (bUseRemoveAtSwap)
|
|
{
|
|
check(!TemporaryCopySourceBuffers);
|
|
TShaderMapRef<TRemoveObjectsFromBufferCS<true> > ComputeShader(GetGlobalShaderMap(Scene->GetFeatureLevel()));
|
|
RHICmdList.SetComputeShader(ComputeShader->GetComputeShader());
|
|
ComputeShader->SetParameters(RHICmdList, Scene, RemoveObjectIndices.Num(), GDistanceFieldRemoveIndices.RemoveIndices.BufferSRV, NULL, NULL);
|
|
|
|
DispatchComputeShader(RHICmdList, *ComputeShader, FMath::DivideAndRoundUp<uint32>(RemoveObjectIndices.Num(), UpdateObjectsGroupSize), 1, 1);
|
|
ComputeShader->UnsetParameters(RHICmdList);
|
|
}
|
|
else
|
|
{
|
|
check(TemporaryCopySourceBuffers);
|
|
TShaderMapRef<TRemoveObjectsFromBufferCS<false> > ComputeShader(GetGlobalShaderMap(Scene->GetFeatureLevel()));
|
|
RHICmdList.SetComputeShader(ComputeShader->GetComputeShader());
|
|
ComputeShader->SetParameters(RHICmdList, Scene, RemoveObjectIndices.Num(), GDistanceFieldRemoveIndices.RemoveIndices.BufferSRV, TemporaryCopySourceBuffers->Bounds.SRV, TemporaryCopySourceBuffers->Data.SRV);
|
|
|
|
DispatchComputeShader(RHICmdList, *ComputeShader, FMath::DivideAndRoundUp<uint32>(RemoveObjectIndices.Num(), UpdateObjectsGroupSize), 1, 1);
|
|
ComputeShader->UnsetParameters(RHICmdList);
|
|
|
|
TemporaryCopySourceBuffers->Release();
|
|
delete TemporaryCopySourceBuffers;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/** Gathers the information needed to represent a single object's distance field and appends it to the upload buffers. */
|
|
void ProcessPrimitiveUpdate(
|
|
bool bIsAddOperation,
|
|
FRHICommandListImmediate& RHICmdList,
|
|
FSceneRenderer& SceneRenderer,
|
|
FPrimitiveSceneInfo* PrimitiveSceneInfo,
|
|
int32 OriginalNumObjects,
|
|
FVector InvTextureDim,
|
|
bool bPrepareForDistanceFieldGI,
|
|
TArray<FMatrix>& ObjectLocalToWorldTransforms,
|
|
TArray<uint32>& UploadObjectIndices,
|
|
TArray<FVector4>& UploadObjectData)
|
|
{
|
|
FScene* Scene = SceneRenderer.Scene;
|
|
FDistanceFieldSceneData& DistanceFieldSceneData = Scene->DistanceFieldSceneData;
|
|
|
|
ObjectLocalToWorldTransforms.Reset();
|
|
|
|
FBox LocalVolumeBounds;
|
|
FIntVector BlockMin;
|
|
FIntVector BlockSize;
|
|
bool bBuiltAsIfTwoSided;
|
|
bool bMeshWasPlane;
|
|
PrimitiveSceneInfo->Proxy->GetDistancefieldAtlasData(LocalVolumeBounds, BlockMin, BlockSize, bBuiltAsIfTwoSided, bMeshWasPlane, ObjectLocalToWorldTransforms);
|
|
|
|
if (BlockMin.X >= 0
|
|
&& BlockMin.Y >= 0
|
|
&& BlockMin.Z >= 0
|
|
&& ObjectLocalToWorldTransforms.Num() > 0)
|
|
{
|
|
const float BoundingRadius = PrimitiveSceneInfo->Proxy->GetBounds().SphereRadius;
|
|
|
|
// Proxy bounds are only useful if single instance
|
|
if (ObjectLocalToWorldTransforms.Num() > 1 || BoundingRadius < GAOMaxObjectBoundingRadius)
|
|
{
|
|
FPrimitiveSurfelAllocation Allocation;
|
|
FPrimitiveSurfelAllocation InstancedAllocation;
|
|
|
|
if (bPrepareForDistanceFieldGI)
|
|
{
|
|
const FPrimitiveSurfelAllocation* AllocationPtr = Scene->DistanceFieldSceneData.SurfelAllocations.FindAllocation(PrimitiveSceneInfo);
|
|
const FPrimitiveSurfelAllocation* InstancedAllocationPtr = Scene->DistanceFieldSceneData.InstancedSurfelAllocations.FindAllocation(PrimitiveSceneInfo);
|
|
|
|
if (AllocationPtr)
|
|
{
|
|
checkSlow(InstancedAllocationPtr && InstancedAllocationPtr->NumInstances == ObjectLocalToWorldTransforms.Num());
|
|
Allocation = *AllocationPtr;
|
|
InstancedAllocation = *InstancedAllocationPtr;
|
|
|
|
extern void GenerateSurfelRepresentation(FRHICommandListImmediate& RHICmdList, FSceneRenderer& Renderer, FViewInfo& View, FPrimitiveSceneInfo* PrimitiveSceneInfo, const FMatrix& Instance0Transform, FPrimitiveSurfelAllocation& Allocation);
|
|
// @todo - support surfel generation without a view
|
|
GenerateSurfelRepresentation(RHICmdList, SceneRenderer, SceneRenderer.Views[0], PrimitiveSceneInfo, ObjectLocalToWorldTransforms[0], Allocation);
|
|
|
|
if (Allocation.NumSurfels == 0)
|
|
{
|
|
InstancedAllocation.NumSurfels = 0;
|
|
InstancedAllocation.NumInstances = 0;
|
|
InstancedAllocation.NumLOD0 = 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (bIsAddOperation)
|
|
{
|
|
DistanceFieldSceneData.NumObjectsInBuffer += ObjectLocalToWorldTransforms.Num();
|
|
PrimitiveSceneInfo->DistanceFieldInstanceIndices.Empty(ObjectLocalToWorldTransforms.Num());
|
|
}
|
|
|
|
for (int32 TransformIndex = 0; TransformIndex < ObjectLocalToWorldTransforms.Num(); TransformIndex++)
|
|
{
|
|
const uint32 UploadIndex = bIsAddOperation ? OriginalNumObjects + UploadObjectIndices.Num() : PrimitiveSceneInfo->DistanceFieldInstanceIndices[TransformIndex];
|
|
|
|
if (bIsAddOperation)
|
|
{
|
|
const int32 AddIndex = OriginalNumObjects + UploadObjectIndices.Num();
|
|
DistanceFieldSceneData.PrimitiveInstanceMapping.Add(FPrimitiveAndInstance(PrimitiveSceneInfo, TransformIndex));
|
|
PrimitiveSceneInfo->DistanceFieldInstanceIndices.Add(AddIndex);
|
|
}
|
|
|
|
UploadObjectIndices.Add(UploadIndex);
|
|
|
|
FMatrix LocalToWorld = ObjectLocalToWorldTransforms[TransformIndex];
|
|
|
|
if (bMeshWasPlane)
|
|
{
|
|
FVector LocalScales = LocalToWorld.GetScaleVector();
|
|
FVector AbsLocalScales(FMath::Abs(LocalScales.X), FMath::Abs(LocalScales.Y), FMath::Abs(LocalScales.Z));
|
|
float MidScale = FMath::Min(AbsLocalScales.X, AbsLocalScales.Y);
|
|
float ScaleAdjust = FMath::Sign(LocalScales.Z) * MidScale / AbsLocalScales.Z;
|
|
// The mesh was determined to be a plane flat in Z during the build process, so we can change the Z scale
|
|
// Helps in cases with modular ground pieces with scales of (10, 10, 1) and some triangles just above Z=0
|
|
LocalToWorld.SetAxis(2, LocalToWorld.GetScaledAxis(EAxis::Z) * ScaleAdjust);
|
|
}
|
|
|
|
const FMatrix VolumeToWorld = FScaleMatrix(LocalVolumeBounds.GetExtent())
|
|
* FTranslationMatrix(LocalVolumeBounds.GetCenter())
|
|
* LocalToWorld;
|
|
|
|
const FVector4 ObjectBoundingSphere(VolumeToWorld.GetOrigin(), VolumeToWorld.GetScaleVector().Size());
|
|
|
|
UploadObjectData.Add(ObjectBoundingSphere);
|
|
|
|
const float MaxExtent = LocalVolumeBounds.GetExtent().GetMax();
|
|
|
|
const FMatrix UniformScaleVolumeToWorld = FScaleMatrix(MaxExtent)
|
|
* FTranslationMatrix(LocalVolumeBounds.GetCenter())
|
|
* LocalToWorld;
|
|
|
|
const FVector InvBlockSize(1.0f / BlockSize.X, 1.0f / BlockSize.Y, 1.0f / BlockSize.Z);
|
|
|
|
//float3 VolumeUV = (VolumePosition / LocalPositionExtent * .5f * UVScale + .5f * UVScale + UVAdd;
|
|
const FVector LocalPositionExtent = LocalVolumeBounds.GetExtent() / FVector(MaxExtent);
|
|
const FVector UVScale = FVector(BlockSize) * InvTextureDim;
|
|
const float VolumeScale = UniformScaleVolumeToWorld.GetMaximumAxisScale();
|
|
|
|
const FMatrix WorldToVolume = UniformScaleVolumeToWorld.Inverse();
|
|
// WorldToVolume
|
|
UploadObjectData.Add(*(FVector4*)&WorldToVolume.M[0]);
|
|
UploadObjectData.Add(*(FVector4*)&WorldToVolume.M[1]);
|
|
UploadObjectData.Add(*(FVector4*)&WorldToVolume.M[2]);
|
|
UploadObjectData.Add(*(FVector4*)&WorldToVolume.M[3]);
|
|
|
|
// Clamp to texel center by subtracting a half texel in the [-1,1] position space
|
|
// LocalPositionExtent
|
|
UploadObjectData.Add(FVector4(LocalPositionExtent - InvBlockSize, LocalVolumeBounds.Min.X));
|
|
|
|
// UVScale, VolumeScale and sign gives bGeneratedAsTwoSided
|
|
const float WSign = bBuiltAsIfTwoSided ? -1 : 1;
|
|
UploadObjectData.Add(FVector4(FVector(BlockSize) * InvTextureDim * .5f / LocalPositionExtent, WSign * VolumeScale));
|
|
|
|
// UVAdd
|
|
UploadObjectData.Add(FVector4(FVector(BlockMin) * InvTextureDim + .5f * UVScale, LocalVolumeBounds.Min.Y));
|
|
|
|
// Box bounds
|
|
UploadObjectData.Add(FVector4(LocalVolumeBounds.Max, LocalVolumeBounds.Min.Z));
|
|
|
|
UploadObjectData.Add(*(FVector4*)&UniformScaleVolumeToWorld.M[0]);
|
|
UploadObjectData.Add(*(FVector4*)&UniformScaleVolumeToWorld.M[1]);
|
|
UploadObjectData.Add(*(FVector4*)&UniformScaleVolumeToWorld.M[2]);
|
|
|
|
UploadObjectData.Add(*(FVector4*)&LocalToWorld.M[0]);
|
|
UploadObjectData.Add(*(FVector4*)&LocalToWorld.M[1]);
|
|
UploadObjectData.Add(*(FVector4*)&LocalToWorld.M[2]);
|
|
UploadObjectData.Add(*(FVector4*)&LocalToWorld.M[3]);
|
|
|
|
UploadObjectData.Add(FVector4(Allocation.Offset, Allocation.NumLOD0, Allocation.NumSurfels, InstancedAllocation.Offset + InstancedAllocation.NumSurfels * TransformIndex));
|
|
|
|
checkSlow(UploadObjectData.Num() % UploadObjectDataStride == 0);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
UE_LOG(LogDistanceField,Log,TEXT("Primitive %s %s excluded due to bounding radius %f"), *PrimitiveSceneInfo->Proxy->GetOwnerName().ToString(), *PrimitiveSceneInfo->Proxy->GetResourceName().ToString(), BoundingRadius);
|
|
}
|
|
}
|
|
}
|
|
|
|
void FDeferredShadingSceneRenderer::UpdateGlobalDistanceFieldObjectBuffers(FRHICommandListImmediate& RHICmdList)
|
|
{
|
|
FDistanceFieldSceneData& DistanceFieldSceneData = Scene->DistanceFieldSceneData;
|
|
|
|
if (GDistanceFieldVolumeTextureAtlas.VolumeTextureRHI
|
|
&& (DistanceFieldSceneData.HasPendingOperations() || DistanceFieldSceneData.AtlasGeneration != GDistanceFieldVolumeTextureAtlas.GetGeneration()))
|
|
{
|
|
QUICK_SCOPE_CYCLE_COUNTER(STAT_UpdateObjectData);
|
|
SCOPED_DRAW_EVENT(RHICmdList, UpdateSceneObjectData);
|
|
|
|
if (!DistanceFieldSceneData.ObjectBuffers)
|
|
{
|
|
DistanceFieldSceneData.ObjectBuffers = new FDistanceFieldObjectBuffers();
|
|
}
|
|
|
|
if (!DistanceFieldSceneData.SurfelBuffers)
|
|
{
|
|
DistanceFieldSceneData.SurfelBuffers = new FSurfelBuffers();
|
|
}
|
|
|
|
if (!DistanceFieldSceneData.InstancedSurfelBuffers)
|
|
{
|
|
DistanceFieldSceneData.InstancedSurfelBuffers = new FInstancedSurfelBuffers();
|
|
}
|
|
|
|
if (DistanceFieldSceneData.AtlasGeneration != GDistanceFieldVolumeTextureAtlas.GetGeneration())
|
|
{
|
|
DistanceFieldSceneData.AtlasGeneration = GDistanceFieldVolumeTextureAtlas.GetGeneration();
|
|
|
|
for (int32 PrimitiveInstanceIndex = 0; PrimitiveInstanceIndex < DistanceFieldSceneData.PrimitiveInstanceMapping.Num(); PrimitiveInstanceIndex++)
|
|
{
|
|
FPrimitiveAndInstance& PrimitiveInstance = DistanceFieldSceneData.PrimitiveInstanceMapping[PrimitiveInstanceIndex];
|
|
|
|
// Queue an update of all primitives, since the atlas layout has changed
|
|
if (PrimitiveInstance.InstanceIndex == 0
|
|
&& !DistanceFieldSceneData.HasPendingRemovePrimitive(PrimitiveInstance.Primitive)
|
|
&& !DistanceFieldSceneData.PendingAddOperations.Contains(PrimitiveInstance.Primitive)
|
|
&& !DistanceFieldSceneData.PendingUpdateOperations.Contains(PrimitiveInstance.Primitive))
|
|
{
|
|
DistanceFieldSceneData.PendingUpdateOperations.Add(PrimitiveInstance.Primitive);
|
|
}
|
|
}
|
|
}
|
|
|
|
// Process removes before adds, as the adds will overwrite primitive allocation info in DistanceFieldSceneData.SurfelAllocations
|
|
UpdateGlobalDistanceFieldObjectRemoves(RHICmdList, Scene);
|
|
extern int32 GVPLMeshGlobalIllumination;
|
|
TArray<uint32> UploadObjectIndices;
|
|
TArray<FVector4> UploadObjectData;
|
|
const bool bPrepareForDistanceFieldGI = GVPLMeshGlobalIllumination && SupportsDistanceFieldGI(Scene->GetFeatureLevel(), Scene->GetShaderPlatform());
|
|
|
|
if (DistanceFieldSceneData.PendingAddOperations.Num() > 0 || DistanceFieldSceneData.PendingUpdateOperations.Num() > 0)
|
|
{
|
|
TArray<FMatrix> ObjectLocalToWorldTransforms;
|
|
|
|
const int32 NumUploadOperations = DistanceFieldSceneData.PendingAddOperations.Num() + DistanceFieldSceneData.PendingUpdateOperations.Num();
|
|
UploadObjectData.Empty(NumUploadOperations * UploadObjectDataStride);
|
|
UploadObjectIndices.Empty(NumUploadOperations);
|
|
|
|
const int32 NumTexelsOneDimX = GDistanceFieldVolumeTextureAtlas.GetSizeX();
|
|
const int32 NumTexelsOneDimY = GDistanceFieldVolumeTextureAtlas.GetSizeY();
|
|
const int32 NumTexelsOneDimZ = GDistanceFieldVolumeTextureAtlas.GetSizeZ();
|
|
const FVector InvTextureDim(1.0f / NumTexelsOneDimX, 1.0f / NumTexelsOneDimY, 1.0f / NumTexelsOneDimZ);
|
|
|
|
int32 OriginalNumObjects = DistanceFieldSceneData.NumObjectsInBuffer;
|
|
int32 OriginalNumSurfels = DistanceFieldSceneData.SurfelAllocations.GetNumSurfelsInBuffer();
|
|
int32 OriginalNumInstancedSurfels = DistanceFieldSceneData.InstancedSurfelAllocations.GetNumSurfelsInBuffer();
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|
|
|
|
|
if (bPrepareForDistanceFieldGI)
|
|
{
|
|
for (int32 UploadPrimitiveIndex = 0; UploadPrimitiveIndex < DistanceFieldSceneData.PendingAddOperations.Num(); UploadPrimitiveIndex++)
|
|
{
|
|
FPrimitiveSceneInfo* PrimitiveSceneInfo = DistanceFieldSceneData.PendingAddOperations[UploadPrimitiveIndex];
|
|
|
|
int32 NumInstances = 0;
|
|
float BoundsSurfaceArea = 0;
|
|
PrimitiveSceneInfo->Proxy->GetDistanceFieldInstanceInfo(NumInstances, BoundsSurfaceArea);
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|
|
|
extern void ComputeNumSurfels(float BoundsSurfaceArea, int32& PrimitiveNumSurfels, int32& PrimitiveLOD0Surfels);
|
|
int32 PrimitiveNumSurfels;
|
|
int32 PrimitiveLOD0Surfels;
|
|
ComputeNumSurfels(BoundsSurfaceArea, PrimitiveNumSurfels, PrimitiveLOD0Surfels);
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|
|
|
if (PrimitiveNumSurfels > 0 && NumInstances > 0)
|
|
{
|
|
const int32 PrimitiveTotalNumSurfels = PrimitiveNumSurfels * NumInstances;
|
|
|
|
if (PrimitiveNumSurfels > 5000)
|
|
{
|
|
UE_LOG(LogDistanceField,Warning,TEXT("Primitive %s %s used %u Surfels"), *PrimitiveSceneInfo->Proxy->GetOwnerName().ToString(), *PrimitiveSceneInfo->Proxy->GetResourceName().ToString(), PrimitiveNumSurfels);
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|
}
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|
|
|
DistanceFieldSceneData.SurfelAllocations.AddPrimitive(PrimitiveSceneInfo, PrimitiveLOD0Surfels, PrimitiveNumSurfels, 1);
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|
DistanceFieldSceneData.InstancedSurfelAllocations.AddPrimitive(PrimitiveSceneInfo, PrimitiveLOD0Surfels, PrimitiveNumSurfels, NumInstances);
|
|
}
|
|
}
|
|
|
|
if (DistanceFieldSceneData.SurfelBuffers->MaxSurfels < DistanceFieldSceneData.SurfelAllocations.GetNumSurfelsInBuffer())
|
|
{
|
|
if (DistanceFieldSceneData.SurfelBuffers->MaxSurfels > 0)
|
|
{
|
|
// Realloc
|
|
FSurfelBuffers* NewSurfelBuffers = new FSurfelBuffers();
|
|
NewSurfelBuffers->MaxSurfels = DistanceFieldSceneData.SurfelAllocations.GetNumSurfelsInBuffer() * 5 / 4;
|
|
NewSurfelBuffers->Initialize();
|
|
|
|
{
|
|
TShaderMapRef<FCopySurfelBufferCS> ComputeShader(GetGlobalShaderMap(Scene->GetFeatureLevel()));
|
|
RHICmdList.SetComputeShader(ComputeShader->GetComputeShader());
|
|
ComputeShader->SetParameters(RHICmdList, *(DistanceFieldSceneData.SurfelBuffers), *(DistanceFieldSceneData.InstancedSurfelBuffers), *NewSurfelBuffers, OriginalNumSurfels);
|
|
|
|
DispatchComputeShader(RHICmdList, *ComputeShader, FMath::DivideAndRoundUp<uint32>(OriginalNumSurfels, UpdateObjectsGroupSize), 1, 1);
|
|
ComputeShader->UnsetParameters(RHICmdList);
|
|
}
|
|
|
|
DistanceFieldSceneData.SurfelBuffers->Release();
|
|
delete DistanceFieldSceneData.SurfelBuffers;
|
|
DistanceFieldSceneData.SurfelBuffers = NewSurfelBuffers;
|
|
}
|
|
else
|
|
{
|
|
// First time allocate
|
|
DistanceFieldSceneData.SurfelBuffers->MaxSurfels = DistanceFieldSceneData.SurfelAllocations.GetNumSurfelsInBuffer() * 5 / 4;
|
|
DistanceFieldSceneData.SurfelBuffers->Initialize();
|
|
}
|
|
}
|
|
|
|
if (DistanceFieldSceneData.InstancedSurfelBuffers->MaxSurfels < DistanceFieldSceneData.InstancedSurfelAllocations.GetNumSurfelsInBuffer())
|
|
{
|
|
if (DistanceFieldSceneData.InstancedSurfelBuffers->MaxSurfels > 0)
|
|
{
|
|
// Realloc
|
|
FInstancedSurfelBuffers* NewInstancedSurfelBuffers = new FInstancedSurfelBuffers();
|
|
NewInstancedSurfelBuffers->MaxSurfels = DistanceFieldSceneData.InstancedSurfelAllocations.GetNumSurfelsInBuffer() * 5 / 4;
|
|
NewInstancedSurfelBuffers->Initialize();
|
|
|
|
{
|
|
TShaderMapRef<FCopyVPLFluxBufferCS> ComputeShader(GetGlobalShaderMap(Scene->GetFeatureLevel()));
|
|
RHICmdList.SetComputeShader(ComputeShader->GetComputeShader());
|
|
ComputeShader->SetParameters(RHICmdList, *(DistanceFieldSceneData.SurfelBuffers), *(DistanceFieldSceneData.InstancedSurfelBuffers), *NewInstancedSurfelBuffers, OriginalNumInstancedSurfels);
|
|
|
|
DispatchComputeShader(RHICmdList, *ComputeShader, FMath::DivideAndRoundUp<uint32>(OriginalNumInstancedSurfels, UpdateObjectsGroupSize), 1, 1);
|
|
ComputeShader->UnsetParameters(RHICmdList);
|
|
}
|
|
|
|
DistanceFieldSceneData.InstancedSurfelBuffers->Release();
|
|
delete DistanceFieldSceneData.InstancedSurfelBuffers;
|
|
DistanceFieldSceneData.InstancedSurfelBuffers = NewInstancedSurfelBuffers;
|
|
}
|
|
else
|
|
{
|
|
// First time allocate
|
|
DistanceFieldSceneData.InstancedSurfelBuffers->MaxSurfels = DistanceFieldSceneData.InstancedSurfelAllocations.GetNumSurfelsInBuffer() * 5 / 4;
|
|
DistanceFieldSceneData.InstancedSurfelBuffers->Initialize();
|
|
}
|
|
}
|
|
}
|
|
|
|
for (int32 UploadPrimitiveIndex = 0; UploadPrimitiveIndex < DistanceFieldSceneData.PendingAddOperations.Num(); UploadPrimitiveIndex++)
|
|
{
|
|
FPrimitiveSceneInfo* PrimitiveSceneInfo = DistanceFieldSceneData.PendingAddOperations[UploadPrimitiveIndex];
|
|
|
|
ProcessPrimitiveUpdate(
|
|
true,
|
|
RHICmdList,
|
|
*this,
|
|
PrimitiveSceneInfo,
|
|
OriginalNumObjects,
|
|
InvTextureDim,
|
|
bPrepareForDistanceFieldGI,
|
|
ObjectLocalToWorldTransforms,
|
|
UploadObjectIndices,
|
|
UploadObjectData);
|
|
}
|
|
|
|
for (TSet<FPrimitiveSceneInfo*>::TIterator It(DistanceFieldSceneData.PendingUpdateOperations); It; ++It)
|
|
{
|
|
FPrimitiveSceneInfo* PrimitiveSceneInfo = *It;
|
|
|
|
ProcessPrimitiveUpdate(
|
|
false,
|
|
RHICmdList,
|
|
*this,
|
|
PrimitiveSceneInfo,
|
|
OriginalNumObjects,
|
|
InvTextureDim,
|
|
bPrepareForDistanceFieldGI,
|
|
ObjectLocalToWorldTransforms,
|
|
UploadObjectIndices,
|
|
UploadObjectData);
|
|
}
|
|
|
|
DistanceFieldSceneData.PendingAddOperations.Reset();
|
|
DistanceFieldSceneData.PendingUpdateOperations.Empty();
|
|
|
|
if (DistanceFieldSceneData.ObjectBuffers->MaxObjects < DistanceFieldSceneData.NumObjectsInBuffer)
|
|
{
|
|
if (DistanceFieldSceneData.ObjectBuffers->MaxObjects > 0)
|
|
{
|
|
// Realloc
|
|
FDistanceFieldObjectBuffers* NewObjectBuffers = new FDistanceFieldObjectBuffers();
|
|
NewObjectBuffers->MaxObjects = DistanceFieldSceneData.NumObjectsInBuffer * 5 / 4;
|
|
NewObjectBuffers->Initialize();
|
|
|
|
{
|
|
TShaderMapRef<FCopyObjectBufferCS> ComputeShader(GetGlobalShaderMap(Scene->GetFeatureLevel()));
|
|
RHICmdList.SetComputeShader(ComputeShader->GetComputeShader());
|
|
ComputeShader->SetParameters(RHICmdList, *(DistanceFieldSceneData.ObjectBuffers), *NewObjectBuffers, OriginalNumObjects);
|
|
|
|
DispatchComputeShader(RHICmdList, *ComputeShader, FMath::DivideAndRoundUp<uint32>(OriginalNumObjects, UpdateObjectsGroupSize), 1, 1);
|
|
ComputeShader->UnsetParameters(RHICmdList);
|
|
}
|
|
|
|
DistanceFieldSceneData.ObjectBuffers->Release();
|
|
delete DistanceFieldSceneData.ObjectBuffers;
|
|
DistanceFieldSceneData.ObjectBuffers = NewObjectBuffers;
|
|
}
|
|
else
|
|
{
|
|
// First time allocate
|
|
DistanceFieldSceneData.ObjectBuffers->MaxObjects = DistanceFieldSceneData.NumObjectsInBuffer * 5 / 4;
|
|
DistanceFieldSceneData.ObjectBuffers->Initialize();
|
|
}
|
|
}
|
|
}
|
|
|
|
if (UploadObjectIndices.Num() > 0)
|
|
{
|
|
if (UploadObjectIndices.Num() > GDistanceFieldUploadIndices.UploadIndices.MaxElements)
|
|
{
|
|
GDistanceFieldUploadIndices.UploadIndices.MaxElements = UploadObjectIndices.Num() * 5 / 4;
|
|
GDistanceFieldUploadIndices.UploadIndices.Release();
|
|
GDistanceFieldUploadIndices.UploadIndices.Initialize();
|
|
|
|
GDistanceFieldUploadData.UploadData.MaxElements = UploadObjectIndices.Num() * 5 / 4;
|
|
GDistanceFieldUploadData.UploadData.Release();
|
|
GDistanceFieldUploadData.UploadData.Initialize();
|
|
}
|
|
|
|
void* LockedBuffer = RHILockVertexBuffer(GDistanceFieldUploadIndices.UploadIndices.Buffer, 0, GDistanceFieldUploadIndices.UploadIndices.Buffer->GetSize(), RLM_WriteOnly);
|
|
const uint32 MemcpySize = UploadObjectIndices.GetTypeSize() * UploadObjectIndices.Num();
|
|
check(GDistanceFieldUploadIndices.UploadIndices.Buffer->GetSize() >= MemcpySize);
|
|
FPlatformMemory::Memcpy(LockedBuffer, UploadObjectIndices.GetData(), MemcpySize);
|
|
RHIUnlockVertexBuffer(GDistanceFieldUploadIndices.UploadIndices.Buffer);
|
|
|
|
LockedBuffer = RHILockVertexBuffer(GDistanceFieldUploadData.UploadData.Buffer, 0, GDistanceFieldUploadData.UploadData.Buffer->GetSize(), RLM_WriteOnly);
|
|
const uint32 MemcpySize2 = UploadObjectData.GetTypeSize() * UploadObjectData.Num();
|
|
check(GDistanceFieldUploadData.UploadData.Buffer->GetSize() >= MemcpySize2);
|
|
FPlatformMemory::Memcpy(LockedBuffer, UploadObjectData.GetData(), MemcpySize2);
|
|
RHIUnlockVertexBuffer(GDistanceFieldUploadData.UploadData.Buffer);
|
|
|
|
{
|
|
TShaderMapRef<FUploadObjectsToBufferCS> ComputeShader(GetGlobalShaderMap(Scene->GetFeatureLevel()));
|
|
RHICmdList.SetComputeShader(ComputeShader->GetComputeShader());
|
|
ComputeShader->SetParameters(RHICmdList, Scene, UploadObjectIndices.Num(), GDistanceFieldUploadIndices.UploadIndices.BufferSRV, GDistanceFieldUploadData.UploadData.BufferSRV);
|
|
|
|
DispatchComputeShader(RHICmdList, *ComputeShader, FMath::DivideAndRoundUp<uint32>(UploadObjectIndices.Num(), UpdateObjectsGroupSize), 1, 1);
|
|
ComputeShader->UnsetParameters(RHICmdList);
|
|
}
|
|
}
|
|
|
|
check(DistanceFieldSceneData.NumObjectsInBuffer == DistanceFieldSceneData.PrimitiveInstanceMapping.Num());
|
|
|
|
DistanceFieldSceneData.VerifyIntegrity();
|
|
}
|
|
}
|
|
|
|
FString GetObjectBufferMemoryString()
|
|
{
|
|
return FString::Printf(TEXT("Temp object buffers %.3fMb"),
|
|
(GDistanceFieldUploadIndices.UploadIndices.GetSizeBytes() + GDistanceFieldUploadData.UploadData.GetSizeBytes() + GDistanceFieldRemoveIndices.RemoveIndices.GetSizeBytes()) / 1024.0f / 1024.0f);
|
|
}
|