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d37c86dcbf
#jira UE-159425 #rb Juan.Canada #preflight 62cf1387ec5992eb2ff69b86 [CL 21077750 by Tiantian Xie in ue5-main branch]
1898 lines
71 KiB
C++
1898 lines
71 KiB
C++
// Copyright Epic Games, Inc. All Rights Reserved.
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#include "GeometryCollection/GeometryCollectionSceneProxy.h"
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#include "Async/ParallelFor.h"
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#include "Engine/Engine.h"
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#include "MaterialShaderType.h"
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#include "Materials/Material.h"
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#include "RenderCore/Public/CommonRenderResources.h"
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#include "Rendering/NaniteResources.h"
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#include "PrimitiveSceneInfo.h"
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#include "GeometryCollection/GeometryCollectionComponent.h"
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#include "GeometryCollection/GeometryCollectionAlgo.h"
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#include "RHIDefinitions.h"
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#if GEOMETRYCOLLECTION_EDITOR_SELECTION
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#include "GeometryCollection/GeometryCollectionHitProxy.h"
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#endif
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#if INTEL_ISPC
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#if USING_CODE_ANALYSIS
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MSVC_PRAGMA( warning( push ) )
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MSVC_PRAGMA( warning( disable : ALL_CODE_ANALYSIS_WARNINGS ) )
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#endif // USING_CODE_ANALYSIS
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#ifdef __clang__
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#pragma clang diagnostic push
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#pragma clang diagnostic ignored "-Wnonportable-include-path"
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#endif
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#include "GeometryCollectionSceneProxy.ispc.generated.h"
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#ifdef __clang__
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#pragma clang diagnostic pop
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#endif
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#if USING_CODE_ANALYSIS
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MSVC_PRAGMA( warning( pop ) )
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#endif // USING_CODE_ANALYSIS
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static_assert(sizeof(ispc::FMatrix44f) == sizeof(FMatrix44f), "sizeof(ispc::FMatrix44f) != sizeof(FMatrix44f)");
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static_assert(sizeof(ispc::FVector3f) == sizeof(FVector3f), "sizeof(ispc::FVector3f) != sizeof(FVector3f)");
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#endif
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#include "ComponentReregisterContext.h"
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#include "ComponentRecreateRenderStateContext.h"
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#if RHI_RAYTRACING
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#include "RayTracingInstance.h"
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#endif
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static int32 GParallelGeometryCollectionBatchSize = 1024;
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static TAutoConsoleVariable<int32> CVarParallelGeometryCollectionBatchSize(
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TEXT("r.ParallelGeometryCollectionBatchSize"),
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GParallelGeometryCollectionBatchSize,
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TEXT("The number of vertices per thread dispatch in a single collection. \n"),
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ECVF_Default
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);
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static int32 GGeometryCollectionTripleBufferUploads = 1;
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FAutoConsoleVariableRef CVarGeometryCollectionTripleBufferUploads(
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TEXT("r.GeometryCollectionTripleBufferUploads"),
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GGeometryCollectionTripleBufferUploads,
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TEXT("Whether to triple buffer geometry collection uploads, which allows Lock_NoOverwrite uploads which are much faster on the GPU with large amounts of data."),
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ECVF_Default
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);
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static int32 GGeometryCollectionOptimizedTransforms = 1;
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FAutoConsoleVariableRef CVarGeometryCollectionOptimizedTransforms(
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TEXT("r.GeometryCollectionOptimizedTransforms"),
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GGeometryCollectionOptimizedTransforms,
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TEXT("Whether to optimize transform update by skipping automatic updates in GPUScene."),
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FConsoleVariableDelegate::CreateLambda([](IConsoleVariable* InVariable)
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{
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FGlobalComponentRecreateRenderStateContext Context;
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}),
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ECVF_Scalability | ECVF_RenderThreadSafe
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);
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static int32 GRayTracingGeometryCollectionProxyMeshes = 0;
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FAutoConsoleVariableRef CVarRayTracingGeometryCollectionProxyMeshes(
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TEXT("r.RayTracing.Geometry.GeometryCollection"),
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GRayTracingGeometryCollectionProxyMeshes,
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TEXT("Include geometry collection proxy meshes in ray tracing effects (default = 0 (Geometry collection meshes disabled in ray tracing))"),
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ECVF_RenderThreadSafe
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);
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#if !defined(CHAOS_GEOMETRY_COLLECTION_SET_DYNAMIC_DATA_ISPC_ENABLED_DEFAULT)
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#define CHAOS_GEOMETRY_COLLECTION_SET_DYNAMIC_DATA_ISPC_ENABLED_DEFAULT 1
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#endif
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// Support run-time toggling on supported platforms in non-shipping configurations
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#if !INTEL_ISPC || UE_BUILD_SHIPPING
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static constexpr bool bGeometryCollection_SetDynamicData_ISPC_Enabled = INTEL_ISPC && CHAOS_GEOMETRY_COLLECTION_SET_DYNAMIC_DATA_ISPC_ENABLED_DEFAULT;
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#else
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static bool bGeometryCollection_SetDynamicData_ISPC_Enabled = CHAOS_GEOMETRY_COLLECTION_SET_DYNAMIC_DATA_ISPC_ENABLED_DEFAULT;
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static FAutoConsoleVariableRef CVarGeometryCollectionSetDynamicDataISPCEnabled(TEXT("r.GeometryCollectionSetDynamicData.ISPC"), bGeometryCollection_SetDynamicData_ISPC_Enabled, TEXT("Whether to use ISPC optimizations to set dynamic data in geometry collections"));
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#endif
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DEFINE_LOG_CATEGORY_STATIC(FGeometryCollectionSceneProxyLogging, Log, All);
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FGeometryCollectionDynamicDataPool GDynamicDataPool;
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class FGeometryCollectionMeshCollectorResources : public FOneFrameResource
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{
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public:
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FGeometryCollectionVertexFactory VertexFactory;
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FGeometryCollectionMeshCollectorResources(ERHIFeatureLevel::Type InFeatureLevel):VertexFactory(InFeatureLevel,true)
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{
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}
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virtual ~FGeometryCollectionMeshCollectorResources()
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{
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VertexFactory.ReleaseResource();
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}
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virtual FGeometryCollectionVertexFactory& GetVertexFactory() { return VertexFactory; }
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};
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FGeometryCollectionSceneProxy::FGeometryCollectionSceneProxy(UGeometryCollectionComponent* Component)
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: FPrimitiveSceneProxy(Component)
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, MaterialRelevance(Component->GetMaterialRelevance(GetScene().GetFeatureLevel()))
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, NumVertices(0)
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, NumIndices(0)
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, VertexFactory(GetScene().GetFeatureLevel())
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, bSupportsManualVertexFetch(VertexFactory.SupportsManualVertexFetch(GetScene().GetFeatureLevel()))
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, bSupportsTripleBufferVertexUpload(GRHISupportsMapWriteNoOverwrite)
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#if GEOMETRYCOLLECTION_EDITOR_SELECTION
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, SubSections()
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, SubSectionHitProxies()
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, SubSectionHitProxyIndexMap()
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, bUsesSubSections(false)
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#endif
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, DynamicData(nullptr)
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, ConstantData(nullptr)
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, bShowBoneColors(Component->GetShowBoneColors())
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, bEnableBoneSelection(Component->GetEnableBoneSelection())
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, bSuppressSelectionMaterial(Component->GetSuppressSelectionMaterial())
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, BoneSelectionMaterialID(Component->GetBoneSelectedMaterialID())
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, bUseFullPrecisionUVs(Component->GetRestCollection()->bUseFullPrecisionUVs)
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, TransformVertexBuffersContainsOriginalMesh(false)
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{
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Materials.Empty();
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const int32 NumMaterials = Component->GetNumMaterials();
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for (int MaterialIndex = 0; MaterialIndex < NumMaterials; ++MaterialIndex)
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{
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Materials.Push(Component->GetMaterial(MaterialIndex));
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if (Materials[MaterialIndex] == nullptr || !Materials[MaterialIndex]->CheckMaterialUsage_Concurrent(MATUSAGE_GeometryCollections))
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{
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Materials[MaterialIndex] = UMaterial::GetDefaultMaterial(MD_Surface);
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}
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}
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// Make sure the vertex color material has the usage flag for rendering geometry collections
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if (GEngine->VertexColorMaterial)
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{
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GEngine->VertexColorMaterial->CheckMaterialUsage_Concurrent(MATUSAGE_GeometryCollections);
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}
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// #todo(dmp): We create the sections before we set the constant data because we need to make sure these
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// are set before the hit proxies are created via CreateHitProxies. Ideally, all data is passed in
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// here when we create proxies, and they are thrown away if underlying geometry changes.
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TManagedArray<FGeometryCollectionSection>& InputSections = Component->GetRestCollection()->GetGeometryCollection()->Sections;
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const int32 NumSections = InputSections.Num();
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Sections.Reset(NumSections);
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for (int SectionIndex = 0; SectionIndex < NumSections; ++SectionIndex)
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{
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FGeometryCollectionSection& Section = InputSections[SectionIndex];
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if (Section.NumTriangles > 0)
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{
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Sections.Add(Section);
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}
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}
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EnableGPUSceneSupportFlags();
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#if GEOMETRYCOLLECTION_EDITOR_SELECTION
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// Init HitProxy array with the maximum number of subsections
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SubSectionHitProxies.SetNumZeroed(Sections.Num() * Component->GetTransformArray().Num());
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#endif
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// #todo(dmp): This flag means that when motion blur is turned on, it will always render geometry collections into the
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// velocity buffer. Note that the way around this is to loop through the global matrices and test whether they have
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// changed from the prev to curr frame, but this is expensive. We should revisit this if the draw calls for velocity
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// rendering become a problem. One solution could be to use internal solver sleeping state to drive motion blur.
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bAlwaysHasVelocity = true;
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// Build pre-skinned bounds from the rest collection, never needs to change as this is the bounds before
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// any movement, or skinning ever happens to the component so it is logically immutable.
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const TSharedPtr<FGeometryCollection, ESPMode::ThreadSafe>
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Collection = Component->RestCollection->GetGeometryCollection();
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const TManagedArray<FBox>& BoundingBoxes = Collection->BoundingBox;
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const TManagedArray<FTransform>& Transform = Collection->Transform;
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const TManagedArray<int32>& Parent = Collection->Parent;
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const TManagedArray<int32>& TransformIndex = Collection->TransformIndex;
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const int32 NumBoxes = BoundingBoxes.Num();
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PreSkinnedBounds = Component->Bounds;
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if(NumBoxes > 0)
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{
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TArray<FMatrix> TmpGlobalMatrices;
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GeometryCollectionAlgo::GlobalMatrices(Transform, Parent, TmpGlobalMatrices);
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FBox PreSkinnedBoundsTemp(ForceInit);
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bool bBoundsInit = false;
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for(int32 BoxIdx = 0; BoxIdx < NumBoxes; ++BoxIdx)
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{
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const int32 TIndex = TransformIndex[BoxIdx];
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if(Collection->IsGeometry(TIndex))
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{
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if(!bBoundsInit)
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{
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PreSkinnedBoundsTemp = BoundingBoxes[BoxIdx].TransformBy(TmpGlobalMatrices[TIndex]);
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bBoundsInit = true;
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}
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else
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{
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PreSkinnedBoundsTemp += BoundingBoxes[BoxIdx].TransformBy(TmpGlobalMatrices[TIndex]);
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}
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}
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}
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PreSkinnedBounds = FBoxSphereBounds(PreSkinnedBoundsTemp);
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}
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#if RHI_RAYTRACING
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if (IsRayTracingEnabled())
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{
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ENQUEUE_RENDER_COMMAND(InitGeometryCollectionRayTracingGeometry)(
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[this](FRHICommandListImmediate& RHICmdList)
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{
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FRayTracingGeometryInitializer Initializer;
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Initializer.DebugName = FName(TEXT("GeometryCollection"));
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Initializer.GeometryType = RTGT_Triangles;
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Initializer.bFastBuild = true;
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Initializer.bAllowUpdate = false;
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Initializer.TotalPrimitiveCount = 0;
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RayTracingGeometry.SetInitializer(Initializer);
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RayTracingGeometry.InitResource();
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});
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}
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#endif
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}
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FGeometryCollectionSceneProxy::~FGeometryCollectionSceneProxy()
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{
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}
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void FGeometryCollectionSceneProxy::DestroyRenderThreadResources()
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{
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ReleaseResources();
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if (DynamicData != nullptr)
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{
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GDynamicDataPool.Release(DynamicData);
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DynamicData = nullptr;
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}
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if (ConstantData != nullptr)
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{
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delete ConstantData;
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}
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#if RHI_RAYTRACING
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if (IsRayTracingEnabled())
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{
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RayTracingGeometry.ReleaseResource();
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RayTracingDynamicVertexBuffer.Release();
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}
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#endif
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}
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void UpdateLooseParameter(FGeometryCollectionVertexFactory& VertexFactory,
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FRHIShaderResourceView* BoneTransformSRV,
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FRHIShaderResourceView* BonePrevTransformSRV,
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FRHIShaderResourceView* BoneMapSRV)
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{
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FGCBoneLooseParameters LooseParameters;
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LooseParameters.VertexFetch_BoneTransformBuffer = BoneTransformSRV;
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LooseParameters.VertexFetch_BonePrevTransformBuffer = BonePrevTransformSRV;
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LooseParameters.VertexFetch_BoneMapBuffer = BoneMapSRV;
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EUniformBufferUsage UniformBufferUsage = VertexFactory.EnableLooseParameter ? UniformBuffer_SingleFrame : UniformBuffer_MultiFrame;
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VertexFactory.LooseParameterUniformBuffer = FGCBoneLooseParametersRef::CreateUniformBufferImmediate(LooseParameters, UniformBufferUsage);
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}
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void FGeometryCollectionSceneProxy::SetupVertexFactory(FGeometryCollectionVertexFactory& GeometryCollectionVertexFactory)const
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{
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FGeometryCollectionVertexFactory::FDataType Data;
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VertexBuffers.PositionVertexBuffer.BindPositionVertexBuffer(&GeometryCollectionVertexFactory, Data);
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VertexBuffers.StaticMeshVertexBuffer.BindTangentVertexBuffer(&GeometryCollectionVertexFactory, Data);
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VertexBuffers.StaticMeshVertexBuffer.BindPackedTexCoordVertexBuffer(&GeometryCollectionVertexFactory, Data);
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VertexBuffers.StaticMeshVertexBuffer.BindLightMapVertexBuffer(&GeometryCollectionVertexFactory, Data, 0);
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VertexBuffers.ColorVertexBuffer.BindColorVertexBuffer(&GeometryCollectionVertexFactory, Data);
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Data.BoneMapSRV = BoneMapBuffer.VertexBufferSRV;
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Data.BoneTransformSRV = TransformBuffers[CurrentTransformBufferIndex].VertexBufferSRV;
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Data.BonePrevTransformSRV = PrevTransformBuffers[CurrentTransformBufferIndex].VertexBufferSRV;
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GeometryCollectionVertexFactory.SetData(Data);
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if (!GeometryCollectionVertexFactory.IsInitialized())
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{
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GeometryCollectionVertexFactory.InitResource();
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}
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else
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{
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GeometryCollectionVertexFactory.UpdateRHI();
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}
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}
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void FGeometryCollectionSceneProxy::InitResources()
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{
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check(ConstantData);
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check(IsInRenderingThread());
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NumVertices = ConstantData->Vertices.Num();
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NumIndices = ConstantData->Indices.Num()*3;
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// taken from this, and expanded here to accommodate modifications for
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// GeometryCollection vertex factory data (transform and bonemap)
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// VertexBuffers.InitWithDummyData(&VertexFactory, GetRequiredVertexCount());
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// get vertex factory data
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FGeometryCollectionVertexFactory::FDataType Data;
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VertexBuffers.StaticMeshVertexBuffer.SetUseFullPrecisionUVs(bUseFullPrecisionUVs);
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// Init buffers
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VertexBuffers.PositionVertexBuffer.Init(NumVertices);
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VertexBuffers.StaticMeshVertexBuffer.Init(NumVertices, GeometryCollectionUV::MAX_NUM_UV_CHANNELS);
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VertexBuffers.ColorVertexBuffer.Init(NumVertices);
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// Init resources
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VertexBuffers.PositionVertexBuffer.InitResource();
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VertexBuffers.StaticMeshVertexBuffer.InitResource();
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VertexBuffers.ColorVertexBuffer.InitResource();
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// Bind buffers
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VertexBuffers.PositionVertexBuffer.BindPositionVertexBuffer(&VertexFactory, Data);
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VertexBuffers.StaticMeshVertexBuffer.BindTangentVertexBuffer(&VertexFactory, Data);
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VertexBuffers.StaticMeshVertexBuffer.BindPackedTexCoordVertexBuffer(&VertexFactory, Data);
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VertexBuffers.StaticMeshVertexBuffer.BindLightMapVertexBuffer(&VertexFactory, Data, 0);
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VertexBuffers.ColorVertexBuffer.BindColorVertexBuffer(&VertexFactory, Data);
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#if GEOMETRYCOLLECTION_EDITOR_SELECTION
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// Note: Could skip this when bEnableBoneSelection is false if the hitproxy shader was made to not require per-vertex hit proxy IDs in that case
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{
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HitProxyIdBuffer.Init(NumVertices);
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HitProxyIdBuffer.InitResource();
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}
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#endif
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IndexBuffer.NumIndices = GetRequiredIndexCount();
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IndexBuffer.InitResource();
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OriginalMeshIndexBuffer.NumIndices = GetRequiredIndexCount();
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OriginalMeshIndexBuffer.InitResource();
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// If using manual vertex fetch, then we will setup the GPU point transform implementation
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if (bSupportsManualVertexFetch)
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{
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BoneMapBuffer.NumVertices = NumVertices;
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TransformBuffers.AddDefaulted(1);
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PrevTransformBuffers.AddDefaulted(1);
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TransformBuffers[0].NumTransforms = ConstantData->NumTransforms;
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PrevTransformBuffers[0].NumTransforms = ConstantData->NumTransforms;
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TransformBuffers[0].InitResource();
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PrevTransformBuffers[0].InitResource();
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BoneMapBuffer.InitResource();
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Data.BoneMapSRV = BoneMapBuffer.VertexBufferSRV;
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Data.BoneTransformSRV = TransformBuffers[0].VertexBufferSRV;
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Data.BonePrevTransformSRV = PrevTransformBuffers[0].VertexBufferSRV;
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}
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else
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{
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// make sure these are not null to pass UB validation
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Data.BoneMapSRV = GNullColorVertexBuffer.VertexBufferSRV;
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Data.BoneTransformSRV = GNullColorVertexBuffer.VertexBufferSRV;
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Data.BonePrevTransformSRV = GNullColorVertexBuffer.VertexBufferSRV;
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}
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//
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// from InitOrUpdateResource(VertexFactory);
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//
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// also make sure to do the binding to the vertex factory
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VertexFactory.SetData(Data);
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if (!VertexFactory.IsInitialized())
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{
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VertexFactory.InitResource();
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}
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else
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{
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VertexFactory.UpdateRHI();
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}
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}
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void FGeometryCollectionSceneProxy::ReleaseResources()
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{
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VertexBuffers.PositionVertexBuffer.ReleaseResource();
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VertexBuffers.StaticMeshVertexBuffer.ReleaseResource();
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VertexBuffers.ColorVertexBuffer.ReleaseResource();
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IndexBuffer.ReleaseResource();
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OriginalMeshIndexBuffer.ReleaseResource();
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if (bSupportsManualVertexFetch)
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{
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BoneMapBuffer.ReleaseResource();
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for (int32 i = 0; i < TransformBuffers.Num(); i++)
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{
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TransformBuffers[i].ReleaseResource();
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PrevTransformBuffers[i].ReleaseResource();
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}
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TransformBuffers.Reset();
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}
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#if GEOMETRYCOLLECTION_EDITOR_SELECTION
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HitProxyIdBuffer.ReleaseResource();
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#endif
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VertexFactory.ReleaseResource();
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}
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void FGeometryCollectionSceneProxy::BuildGeometry( const FGeometryCollectionConstantData* ConstantDataIn, TArray<FDynamicMeshVertex>& OutVertices, TArray<int32>& OutIndices, TArray<int32> &OutOriginalMeshIndices)
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{
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OutVertices.SetNumUninitialized(ConstantDataIn->Vertices.Num());
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ParallelFor(ConstantData->Vertices.Num(), [&](int32 PointIdx)
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{
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OutVertices[PointIdx] =
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FDynamicMeshVertex(
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ConstantDataIn->Vertices[PointIdx],
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ConstantDataIn->UVs[PointIdx][0],
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bShowBoneColors||bEnableBoneSelection ?
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ConstantDataIn->BoneColors[PointIdx].ToFColor(true) :
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ConstantDataIn->Colors[PointIdx].ToFColor(true)
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);
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OutVertices[PointIdx].SetTangents(ConstantDataIn->TangentU[PointIdx], ConstantDataIn->TangentV[PointIdx], ConstantDataIn->Normals[PointIdx]);
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if (ConstantDataIn->UVs[PointIdx].Num() > 1)
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{
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for (int32 UVLayerIdx = 1; UVLayerIdx < ConstantDataIn->UVs[PointIdx].Num(); ++UVLayerIdx)
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{
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OutVertices[PointIdx].TextureCoordinate[UVLayerIdx] = ConstantDataIn->UVs[PointIdx][UVLayerIdx];
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}
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}
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});
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check(ConstantDataIn->Indices.Num() * 3 == NumIndices);
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OutIndices.SetNumUninitialized(NumIndices);
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ParallelFor(ConstantDataIn->Indices.Num(), [&](int32 IndexIdx)
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{
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OutIndices[IndexIdx * 3 ] = ConstantDataIn->Indices[IndexIdx].X;
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OutIndices[IndexIdx * 3 + 1] = ConstantDataIn->Indices[IndexIdx].Y;
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OutIndices[IndexIdx * 3 + 2] = ConstantDataIn->Indices[IndexIdx].Z;
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});
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OutOriginalMeshIndices.SetNumUninitialized(ConstantDataIn->OriginalMeshIndices.Num() * 3);
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ParallelFor(ConstantDataIn->OriginalMeshIndices.Num(), [&](int32 IndexIdx)
|
|
{
|
|
OutOriginalMeshIndices[IndexIdx * 3] = ConstantDataIn->OriginalMeshIndices[IndexIdx].X;
|
|
OutOriginalMeshIndices[IndexIdx * 3 + 1] = ConstantDataIn->OriginalMeshIndices[IndexIdx].Y;
|
|
OutOriginalMeshIndices[IndexIdx * 3 + 2] = ConstantDataIn->OriginalMeshIndices[IndexIdx].Z;
|
|
});
|
|
}
|
|
|
|
void FGeometryCollectionSceneProxy::SetConstantData_RenderThread(FGeometryCollectionConstantData* NewConstantData, bool ForceInit)
|
|
{
|
|
check(IsInRenderingThread());
|
|
check(NewConstantData);
|
|
|
|
if (ConstantData)
|
|
{
|
|
delete ConstantData;
|
|
ConstantData = nullptr;
|
|
}
|
|
ConstantData = NewConstantData;
|
|
|
|
if (ConstantData->Vertices.Num() != VertexBuffers.PositionVertexBuffer.GetNumVertices() || ForceInit)
|
|
{
|
|
ReleaseResources();
|
|
InitResources();
|
|
}
|
|
|
|
TArray<int32> Indices;
|
|
TArray<int32> OriginalMeshIndices;
|
|
TArray<FDynamicMeshVertex> Vertices;
|
|
BuildGeometry(ConstantData, Vertices, Indices, OriginalMeshIndices);
|
|
check(Vertices.Num() == GetRequiredVertexCount());
|
|
check(Indices.Num() == GetRequiredIndexCount());
|
|
|
|
if (GetRequiredVertexCount())
|
|
{
|
|
ParallelFor(Vertices.Num(), [&](int32 i)
|
|
{
|
|
const FDynamicMeshVertex& Vertex = Vertices[i];
|
|
|
|
VertexBuffers.PositionVertexBuffer.VertexPosition(i) = Vertex.Position;
|
|
VertexBuffers.StaticMeshVertexBuffer.SetVertexTangents(i, Vertex.TangentX.ToFVector3f(), Vertex.GetTangentY(), Vertex.TangentZ.ToFVector3f());
|
|
for (int UVChannelIndex = 0; UVChannelIndex < GeometryCollectionUV::MAX_NUM_UV_CHANNELS; UVChannelIndex++)
|
|
{
|
|
VertexBuffers.StaticMeshVertexBuffer.SetVertexUV(i, UVChannelIndex, Vertex.TextureCoordinate[UVChannelIndex]);
|
|
}
|
|
VertexBuffers.ColorVertexBuffer.VertexColor(i) = Vertex.Color;
|
|
#if GEOMETRYCOLLECTION_EDITOR_SELECTION
|
|
if (bEnableBoneSelection && PerBoneHitProxies.Num())
|
|
{
|
|
// One proxy per bone
|
|
const int32 ProxyIndex = ConstantData->BoneMap[i];
|
|
HitProxyIdBuffer.VertexColor(i) = PerBoneHitProxies[ProxyIndex]->Id.GetColor();
|
|
}
|
|
else
|
|
{
|
|
HitProxyIdBuffer.VertexColor(i) = WholeObjectHitProxyColor;
|
|
}
|
|
#endif
|
|
});
|
|
|
|
{
|
|
auto& VertexBuffer = VertexBuffers.PositionVertexBuffer;
|
|
void* VertexBufferData = RHILockBuffer(VertexBuffer.VertexBufferRHI, 0, VertexBuffer.GetNumVertices() * VertexBuffer.GetStride(), RLM_WriteOnly);
|
|
FMemory::Memcpy(VertexBufferData, VertexBuffer.GetVertexData(), VertexBuffer.GetNumVertices() * VertexBuffer.GetStride());
|
|
RHIUnlockBuffer(VertexBuffer.VertexBufferRHI);
|
|
}
|
|
|
|
{
|
|
auto& VertexBuffer = VertexBuffers.ColorVertexBuffer;
|
|
void* VertexBufferData = RHILockBuffer(VertexBuffer.VertexBufferRHI, 0, VertexBuffer.GetNumVertices() * VertexBuffer.GetStride(), RLM_WriteOnly);
|
|
FMemory::Memcpy(VertexBufferData, VertexBuffer.GetVertexData(), VertexBuffer.GetNumVertices() * VertexBuffer.GetStride());
|
|
RHIUnlockBuffer(VertexBuffer.VertexBufferRHI);
|
|
}
|
|
|
|
#if GEOMETRYCOLLECTION_EDITOR_SELECTION
|
|
// Note: Could skip this when bEnableBoneSelection is false if the hitproxy shader was made to not require per-vertex hit proxy IDs in that case
|
|
{
|
|
auto& VertexBuffer = HitProxyIdBuffer;
|
|
void* VertexBufferData = RHILockBuffer(VertexBuffer.VertexBufferRHI, 0, VertexBuffer.GetNumVertices() * VertexBuffer.GetStride(), RLM_WriteOnly);
|
|
FMemory::Memcpy(VertexBufferData, VertexBuffer.GetVertexData(), VertexBuffer.GetNumVertices() * VertexBuffer.GetStride());
|
|
RHIUnlockBuffer(VertexBuffer.VertexBufferRHI);
|
|
}
|
|
#endif
|
|
|
|
{
|
|
auto& VertexBuffer = VertexBuffers.StaticMeshVertexBuffer;
|
|
void* VertexBufferData = RHILockBuffer(VertexBuffer.TangentsVertexBuffer.VertexBufferRHI, 0, VertexBuffer.GetTangentSize(), RLM_WriteOnly);
|
|
FMemory::Memcpy(VertexBufferData, VertexBuffer.GetTangentData(), VertexBuffer.GetTangentSize());
|
|
RHIUnlockBuffer(VertexBuffer.TangentsVertexBuffer.VertexBufferRHI);
|
|
}
|
|
|
|
{
|
|
auto& VertexBuffer = VertexBuffers.StaticMeshVertexBuffer;
|
|
void* VertexBufferData = RHILockBuffer(VertexBuffer.TexCoordVertexBuffer.VertexBufferRHI, 0, VertexBuffer.GetTexCoordSize(), RLM_WriteOnly);
|
|
FMemory::Memcpy(VertexBufferData, VertexBuffer.GetTexCoordData(), VertexBuffer.GetTexCoordSize());
|
|
RHIUnlockBuffer(VertexBuffer.TexCoordVertexBuffer.VertexBufferRHI);
|
|
}
|
|
|
|
{
|
|
void* IndexBufferData = RHILockBuffer(IndexBuffer.IndexBufferRHI, 0, Indices.Num() * sizeof(int32), RLM_WriteOnly);
|
|
FMemory::Memcpy(IndexBufferData, &Indices[0], Indices.Num() * sizeof(int32));
|
|
RHIUnlockBuffer(IndexBuffer.IndexBufferRHI);
|
|
}
|
|
|
|
{
|
|
void* OriginalMeshIndexBufferData = RHILockBuffer(OriginalMeshIndexBuffer.IndexBufferRHI, 0, OriginalMeshIndices.Num() * sizeof(int32), RLM_WriteOnly);
|
|
FMemory::Memcpy(OriginalMeshIndexBufferData, &OriginalMeshIndices[0], OriginalMeshIndices.Num() * sizeof(int32));
|
|
RHIUnlockBuffer(OriginalMeshIndexBuffer.IndexBufferRHI);
|
|
}
|
|
|
|
// If we are using the GeometryCollection vertex factory, populate the vertex buffer for bone map
|
|
if (bSupportsManualVertexFetch)
|
|
{
|
|
void* BoneMapBufferData = RHILockBuffer(BoneMapBuffer.VertexBufferRHI, 0, Vertices.Num() * sizeof(int32), RLM_WriteOnly);
|
|
FMemory::Memcpy(BoneMapBufferData, &ConstantData->BoneMap[0], ConstantData->BoneMap.Num() * sizeof(int32));
|
|
RHIUnlockBuffer(BoneMapBuffer.VertexBufferRHI);
|
|
|
|
// In order to use loose parameter to support raytracing, we need to initialize the transform/pretransform buffer
|
|
// before it's set up in the dynamic path. Otherwise, the transformation matrix will be all zero instead of identity.
|
|
// Then, nothing will be drawn
|
|
const bool bLocalGeometryCollectionTripleBufferUploads = (GGeometryCollectionTripleBufferUploads != 0) && bSupportsTripleBufferVertexUpload;
|
|
const EResourceLockMode LockMode = bLocalGeometryCollectionTripleBufferUploads ? RLM_WriteOnly_NoOverwrite : RLM_WriteOnly;
|
|
|
|
FGeometryCollectionTransformBuffer& TransformBuffer = GetCurrentTransformBuffer();
|
|
FGeometryCollectionTransformBuffer& PrevTransformBuffer = GetCurrentPrevTransformBuffer();
|
|
|
|
|
|
// if we are rendering the base mesh geometry, then use rest transforms rather than the simulated one for both current and previous transforms
|
|
TransformBuffer.UpdateDynamicData(ConstantData->RestTransforms, LockMode);
|
|
PrevTransformBuffer.UpdateDynamicData(ConstantData->RestTransforms, LockMode);
|
|
|
|
}
|
|
|
|
// Update mesh sections
|
|
check(Sections.Num() == ConstantData->Sections.Num());
|
|
// #todo(dmp): We should restructure the component/SceneProxy usage to avoid this messy stuff. We need to know the sections
|
|
// when we create the sceneproxy for the hit proxy to work, but then we are updating the sections here with potentially differing
|
|
// vertex counts due to hiding geometry. Ideally, the SceneProxy is treated as const and recreated whenever the geometry
|
|
// changes rather than this. SetConstantData_RenderThread should be done in the constructor for the sceneproxy, most likely
|
|
int i = 0;
|
|
for (FGeometryCollectionSection Section : ConstantData->Sections)
|
|
{
|
|
if (Section.NumTriangles > 0)
|
|
{
|
|
FGeometryCollectionSection &NewSection = Sections[i++];
|
|
NewSection.MaterialID = Section.MaterialID;
|
|
NewSection.FirstIndex = Section.FirstIndex;
|
|
NewSection.NumTriangles = Section.NumTriangles;
|
|
NewSection.MinVertexIndex = Section.MinVertexIndex;
|
|
NewSection.MaxVertexIndex = Section.MaxVertexIndex;
|
|
}
|
|
}
|
|
|
|
#if GEOMETRYCOLLECTION_EDITOR_SELECTION
|
|
// Recreate or release subsections as needed
|
|
if (bUsesSubSections)
|
|
{
|
|
InitializeSubSections_RenderThread();
|
|
}
|
|
else
|
|
{
|
|
ReleaseSubSections_RenderThread();
|
|
}
|
|
}
|
|
else
|
|
{
|
|
ReleaseSubSections_RenderThread();
|
|
#endif
|
|
}
|
|
|
|
#if RHI_RAYTRACING
|
|
if (IsRayTracingEnabled())
|
|
{
|
|
bGeometryResourceUpdated = true;
|
|
}
|
|
#endif
|
|
|
|
}
|
|
|
|
void FGeometryCollectionSceneProxy::SetDynamicData_RenderThread(FGeometryCollectionDynamicData* NewDynamicData)
|
|
{
|
|
check(IsInRenderingThread());
|
|
if (GetRequiredVertexCount())
|
|
{
|
|
if (DynamicData)
|
|
{
|
|
GDynamicDataPool.Release(DynamicData);
|
|
DynamicData = nullptr;
|
|
}
|
|
DynamicData = NewDynamicData;
|
|
|
|
check(VertexBuffers.PositionVertexBuffer.GetNumVertices() == (uint32)ConstantData->Vertices.Num());
|
|
|
|
if (bSupportsManualVertexFetch)
|
|
{
|
|
const bool bLocalGeometryCollectionTripleBufferUploads = (GGeometryCollectionTripleBufferUploads != 0) && bSupportsTripleBufferVertexUpload;
|
|
|
|
if (bLocalGeometryCollectionTripleBufferUploads && TransformBuffers.Num() == 1)
|
|
{
|
|
TransformBuffers.AddDefaulted(2);
|
|
PrevTransformBuffers.AddDefaulted(2);
|
|
|
|
for (int32 i = 1; i < 3; i++)
|
|
{
|
|
TransformBuffers[i].NumTransforms = ConstantData->NumTransforms;
|
|
PrevTransformBuffers[i].NumTransforms = ConstantData->NumTransforms;
|
|
TransformBuffers[i].InitResource();
|
|
PrevTransformBuffers[i].InitResource();
|
|
}
|
|
}
|
|
|
|
// Copy the transform data over to the vertex buffer
|
|
{
|
|
const EResourceLockMode LockMode = bLocalGeometryCollectionTripleBufferUploads ? RLM_WriteOnly_NoOverwrite : RLM_WriteOnly;
|
|
|
|
CycleTransformBuffers(bLocalGeometryCollectionTripleBufferUploads);
|
|
|
|
FGeometryCollectionTransformBuffer& TransformBuffer = GetCurrentTransformBuffer();
|
|
FGeometryCollectionTransformBuffer& PrevTransformBuffer = GetCurrentPrevTransformBuffer();
|
|
|
|
VertexFactory.SetBoneTransformSRV(TransformBuffer.VertexBufferSRV);
|
|
VertexFactory.SetBonePrevTransformSRV(PrevTransformBuffer.VertexBufferSRV);
|
|
|
|
if (DynamicData->IsDynamic)
|
|
{
|
|
TransformBuffer.UpdateDynamicData(DynamicData->Transforms, LockMode);
|
|
PrevTransformBuffer.UpdateDynamicData(DynamicData->PrevTransforms, LockMode);
|
|
|
|
TransformVertexBuffersContainsOriginalMesh = false;
|
|
}
|
|
else if (!TransformVertexBuffersContainsOriginalMesh)
|
|
{
|
|
// if we are rendering the base mesh geometry, then use rest transforms rather than the simulated one for both current and previous transforms
|
|
TransformBuffer.UpdateDynamicData(ConstantData->RestTransforms, LockMode);
|
|
PrevTransformBuffer.UpdateDynamicData(ConstantData->RestTransforms, LockMode);
|
|
|
|
TransformVertexBuffersContainsOriginalMesh = true;
|
|
}
|
|
|
|
UpdateLooseParameter(VertexFactory, TransformBuffer.VertexBufferSRV, PrevTransformBuffer.VertexBufferSRV, BoneMapBuffer.VertexBufferSRV);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
auto& VertexBuffer = VertexBuffers.PositionVertexBuffer;
|
|
void* VertexBufferData = RHILockBuffer(VertexBuffer.VertexBufferRHI, 0, VertexBuffer.GetNumVertices() * VertexBuffer.GetStride(), RLM_WriteOnly);
|
|
|
|
bool bParallelGeometryCollection = true;
|
|
int32 TotalVertices = ConstantData->Vertices.Num();
|
|
int32 ParallelGeometryCollectionBatchSize = CVarParallelGeometryCollectionBatchSize.GetValueOnRenderThread();
|
|
|
|
int32 NumBatches = (TotalVertices / ParallelGeometryCollectionBatchSize);
|
|
|
|
if (TotalVertices != ParallelGeometryCollectionBatchSize)
|
|
{
|
|
NumBatches++;
|
|
}
|
|
|
|
// Batch too small, don't bother with parallel
|
|
if (ParallelGeometryCollectionBatchSize > TotalVertices)
|
|
{
|
|
bParallelGeometryCollection = false;
|
|
ParallelGeometryCollectionBatchSize = TotalVertices;
|
|
}
|
|
|
|
auto GeometryCollectionBatch([&](int32 BatchNum)
|
|
{
|
|
int32 IndexOffset = ParallelGeometryCollectionBatchSize * BatchNum;
|
|
int32 ThisBatchSize = ParallelGeometryCollectionBatchSize;
|
|
|
|
// Check for final batch
|
|
if (IndexOffset + ParallelGeometryCollectionBatchSize > NumVertices)
|
|
{
|
|
ThisBatchSize = TotalVertices - IndexOffset;
|
|
}
|
|
|
|
if (ThisBatchSize > 0)
|
|
{
|
|
const FMatrix44f* RESTRICT BoneTransformsPtr = DynamicData->IsDynamic ? DynamicData->Transforms.GetData() : ConstantData->RestTransforms.GetData();
|
|
|
|
if (bGeometryCollection_SetDynamicData_ISPC_Enabled)
|
|
{
|
|
#if INTEL_ISPC
|
|
uint8* VertexBufferOffset = (uint8*)VertexBufferData + (IndexOffset * VertexBuffer.GetStride());
|
|
ispc::SetDynamicData_RenderThread(
|
|
(ispc::FVector3f*)VertexBufferOffset,
|
|
ThisBatchSize,
|
|
VertexBuffer.GetStride(),
|
|
&ConstantData->BoneMap[IndexOffset],
|
|
(ispc::FMatrix44f*)BoneTransformsPtr,
|
|
(ispc::FVector3f*)&ConstantData->Vertices[IndexOffset]);
|
|
#endif
|
|
}
|
|
else
|
|
{
|
|
for (int32 i = IndexOffset; i < IndexOffset + ThisBatchSize; i++)
|
|
{
|
|
FVector3f Transformed = BoneTransformsPtr[ConstantData->BoneMap[i]].TransformPosition(ConstantData->Vertices[i]);
|
|
FMemory::Memcpy((uint8*)VertexBufferData + (i * VertexBuffer.GetStride()), &Transformed, sizeof(FVector3f));
|
|
}
|
|
}
|
|
}
|
|
});
|
|
|
|
ParallelFor(NumBatches, GeometryCollectionBatch, !bParallelGeometryCollection);
|
|
|
|
RHIUnlockBuffer(VertexBuffer.VertexBufferRHI);
|
|
}
|
|
|
|
#if RHI_RAYTRACING
|
|
if (IsRayTracingEnabled())
|
|
{
|
|
bGeometryResourceUpdated = true;
|
|
}
|
|
#endif
|
|
}
|
|
}
|
|
|
|
FMaterialRenderProxy* FGeometryCollectionSceneProxy::GetMaterial(FMeshElementCollector& Collector, int32 MaterialIndex) const
|
|
{
|
|
// material for wireframe
|
|
/*
|
|
never used
|
|
auto WireframeMaterialInstance = new FColoredMaterialRenderProxy(
|
|
GEngine->WireframeMaterial ? GEngine->WireframeMaterial->GetRenderProxy(IsSelected()) : nullptr,
|
|
FLinearColor(0, 0.5f, 1.f)
|
|
);
|
|
Collector.RegisterOneFrameMaterialProxy(WireframeMaterialInstance);
|
|
*/
|
|
|
|
// material for colored bones
|
|
|
|
FMaterialRenderProxy* MaterialProxy = nullptr;
|
|
|
|
if (bShowBoneColors && GEngine->VertexColorMaterial)
|
|
{
|
|
UMaterial* VertexColorVisualizationMaterial = GEngine->VertexColorMaterial;
|
|
auto VertexColorVisualizationMaterialInstance = new FColoredMaterialRenderProxy(
|
|
VertexColorVisualizationMaterial->GetRenderProxy(),
|
|
GetSelectionColor(FLinearColor::White, false, false)
|
|
);
|
|
Collector.RegisterOneFrameMaterialProxy(VertexColorVisualizationMaterialInstance);
|
|
MaterialProxy = VertexColorVisualizationMaterialInstance;
|
|
}
|
|
else
|
|
{
|
|
MaterialProxy = Materials[MaterialIndex]->GetRenderProxy();
|
|
}
|
|
|
|
if (MaterialProxy == nullptr)
|
|
{
|
|
MaterialProxy = UMaterial::GetDefaultMaterial(MD_Surface)->GetRenderProxy();
|
|
}
|
|
|
|
return MaterialProxy;
|
|
}
|
|
|
|
void FGeometryCollectionSceneProxy::GetDynamicMeshElements(const TArray<const FSceneView*>& Views, const FSceneViewFamily& ViewFamily, uint32 VisibilityMap, FMeshElementCollector& Collector) const
|
|
{
|
|
QUICK_SCOPE_CYCLE_COUNTER(STAT_GeometryCollectionSceneProxy_GetDynamicMeshElements);
|
|
if (GetRequiredVertexCount())
|
|
{
|
|
const bool bWireframe = AllowDebugViewmodes() && ViewFamily.EngineShowFlags.Wireframe;
|
|
const bool bProxyIsSelected = IsSelected();
|
|
|
|
const FEngineShowFlags& EngineShowFlags = ViewFamily.EngineShowFlags;
|
|
|
|
auto SetDebugMaterial = [this, &Collector, &EngineShowFlags, bProxyIsSelected](FMeshBatch& Mesh) -> void
|
|
{
|
|
#if UE_ENABLE_DEBUG_DRAWING
|
|
|
|
// flag to indicate whether we've set a debug material yet
|
|
// Note: Will be used if we add more debug material options
|
|
// (compare to variable of same name in StaticMeshRender.cpp)
|
|
bool bDebugMaterialRenderProxySet = false;
|
|
|
|
if (!bDebugMaterialRenderProxySet && bProxyIsSelected && EngineShowFlags.VertexColors && AllowDebugViewmodes())
|
|
{
|
|
// Override the mesh's material with our material that draws the vertex colors
|
|
UMaterial* VertexColorVisualizationMaterial = NULL;
|
|
switch (GVertexColorViewMode)
|
|
{
|
|
case EVertexColorViewMode::Color:
|
|
VertexColorVisualizationMaterial = GEngine->VertexColorViewModeMaterial_ColorOnly;
|
|
break;
|
|
|
|
case EVertexColorViewMode::Alpha:
|
|
VertexColorVisualizationMaterial = GEngine->VertexColorViewModeMaterial_AlphaAsColor;
|
|
break;
|
|
|
|
case EVertexColorViewMode::Red:
|
|
VertexColorVisualizationMaterial = GEngine->VertexColorViewModeMaterial_RedOnly;
|
|
break;
|
|
|
|
case EVertexColorViewMode::Green:
|
|
VertexColorVisualizationMaterial = GEngine->VertexColorViewModeMaterial_GreenOnly;
|
|
break;
|
|
|
|
case EVertexColorViewMode::Blue:
|
|
VertexColorVisualizationMaterial = GEngine->VertexColorViewModeMaterial_BlueOnly;
|
|
break;
|
|
}
|
|
check(VertexColorVisualizationMaterial != NULL);
|
|
|
|
// Note: static mesh renderer does something more complicated involving per-section selection,
|
|
// but whole component selection seems ok for now
|
|
bool bSectionIsSelected = bProxyIsSelected;
|
|
|
|
auto VertexColorVisualizationMaterialInstance = new FColoredMaterialRenderProxy(
|
|
VertexColorVisualizationMaterial->GetRenderProxy(),
|
|
GetSelectionColor(FLinearColor::White, bSectionIsSelected, IsHovered())
|
|
);
|
|
|
|
Collector.RegisterOneFrameMaterialProxy(VertexColorVisualizationMaterialInstance);
|
|
Mesh.MaterialRenderProxy = VertexColorVisualizationMaterialInstance;
|
|
|
|
bDebugMaterialRenderProxySet = true;
|
|
}
|
|
#endif
|
|
};
|
|
|
|
for (int32 ViewIndex = 0; ViewIndex < Views.Num(); ViewIndex++)
|
|
{
|
|
if ((VisibilityMap & (1 << ViewIndex)) == 0) { continue; }
|
|
|
|
// Render Batches
|
|
|
|
// render original mesh if it isn't dynamic and there is an unfractured mesh
|
|
// #todo(dmp): refactor this to share more code later
|
|
const bool bIsDynamic = DynamicData && DynamicData->IsDynamic;
|
|
if (!bIsDynamic)
|
|
{
|
|
#if GEOMETRYCOLLECTION_EDITOR_SELECTION
|
|
const TArray<FGeometryCollectionSection>& SectionArray = bUsesSubSections && SubSections.Num() ? SubSections: ConstantData->OriginalMeshSections;
|
|
UE_LOG(FGeometryCollectionSceneProxyLogging, VeryVerbose, TEXT("GetDynamicMeshElements, bUseSubSections=%d, NumSections=%d for %p."), bUsesSubSections, SectionArray.Num(), this);
|
|
#else
|
|
const TArray<FGeometryCollectionSection>& SectionArray = ConstantData->OriginalMeshSections;
|
|
#endif
|
|
|
|
// Grab the material proxies we'll be using for each section
|
|
TArray<FMaterialRenderProxy*, TInlineAllocator<32>> MaterialProxies;
|
|
|
|
for (int32 SectionIndex = 0; SectionIndex < SectionArray.Num(); SectionIndex++)
|
|
{
|
|
const FGeometryCollectionSection& Section = SectionArray[SectionIndex];
|
|
FMaterialRenderProxy* MaterialProxy = GetMaterial(Collector, Section.MaterialID);
|
|
MaterialProxies.Add(MaterialProxy);
|
|
}
|
|
|
|
for (int32 SectionIndex = 0; SectionIndex < SectionArray.Num(); SectionIndex++)
|
|
{
|
|
const FGeometryCollectionSection& Section = SectionArray[SectionIndex];
|
|
|
|
// Draw the mesh.
|
|
FMeshBatch& Mesh = Collector.AllocateMesh();
|
|
FMeshBatchElement& BatchElement = Mesh.Elements[0];
|
|
BatchElement.IndexBuffer = &OriginalMeshIndexBuffer;
|
|
Mesh.bWireframe = bWireframe;
|
|
Mesh.VertexFactory = &VertexFactory;
|
|
Mesh.MaterialRenderProxy = MaterialProxies[SectionIndex];
|
|
|
|
/*
|
|
bool bHasPrecomputedVolumetricLightmap;
|
|
FMatrix PreviousLocalToWorld;
|
|
int32 SingleCaptureIndex;
|
|
bool bOutputVelocity;
|
|
GetScene().GetPrimitiveUniformShaderParameters_RenderThread(GetPrimitiveSceneInfo(), bHasPrecomputedVolumetricLightmap, PreviousLocalToWorld, SingleCaptureIndex, bOutputVelocity);
|
|
bOutputVelocity |= AlwaysHasVelocity();
|
|
|
|
FDynamicPrimitiveUniformBuffer& DynamicPrimitiveUniformBuffer = Collector.AllocateOneFrameResource<FDynamicPrimitiveUniformBuffer>();
|
|
DynamicPrimitiveUniformBuffer.Set(GetLocalToWorld(), PreviousLocalToWorld, GetBounds(), GetLocalBounds(), true, bHasPrecomputedVolumetricLightmap, bOutputVelocity);
|
|
BatchElement.PrimitiveUniformBufferResource = &DynamicPrimitiveUniformBuffer.UniformBuffer;
|
|
*/
|
|
|
|
BatchElement.PrimitiveUniformBuffer = GetUniformBuffer();
|
|
BatchElement.FirstIndex = Section.FirstIndex;
|
|
BatchElement.NumPrimitives = Section.NumTriangles;
|
|
BatchElement.MinVertexIndex = Section.MinVertexIndex;
|
|
BatchElement.MaxVertexIndex = Section.MaxVertexIndex;
|
|
Mesh.ReverseCulling = IsLocalToWorldDeterminantNegative();
|
|
Mesh.Type = PT_TriangleList;
|
|
Mesh.DepthPriorityGroup = SDPG_World;
|
|
Mesh.bCanApplyViewModeOverrides = true;
|
|
#if WITH_EDITOR
|
|
if (GIsEditor)
|
|
{
|
|
Mesh.BatchHitProxyId = Section.HitProxy ? Section.HitProxy->Id : FHitProxyId();
|
|
}
|
|
#endif
|
|
|
|
SetDebugMaterial(Mesh);
|
|
|
|
Collector.AddMesh(ViewIndex, Mesh);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
#if GEOMETRYCOLLECTION_EDITOR_SELECTION
|
|
const TArray<FGeometryCollectionSection>& SectionArray = bUsesSubSections && SubSections.Num() ? SubSections: Sections;
|
|
UE_LOG(FGeometryCollectionSceneProxyLogging, VeryVerbose, TEXT("GetDynamicMeshElements, bUseSubSections=%d, NumSections=%d for %p."), bUsesSubSections, SectionArray.Num(), this);
|
|
#else
|
|
const TArray<FGeometryCollectionSection>& SectionArray = Sections;
|
|
#endif
|
|
|
|
// Grab the material proxies we'll be using for each section
|
|
TArray<FMaterialRenderProxy*, TInlineAllocator<32>> MaterialProxies;
|
|
|
|
for (int32 SectionIndex = 0; SectionIndex < SectionArray.Num(); ++SectionIndex)
|
|
{
|
|
const FGeometryCollectionSection& Section = SectionArray[SectionIndex];
|
|
|
|
FMaterialRenderProxy* MaterialProxy = GetMaterial(Collector, Section.MaterialID);
|
|
MaterialProxies.Add(MaterialProxy);
|
|
}
|
|
|
|
for (int32 SectionIndex = 0; SectionIndex < SectionArray.Num(); ++SectionIndex)
|
|
{
|
|
const FGeometryCollectionSection& Section = SectionArray[SectionIndex];
|
|
|
|
// Draw the mesh.
|
|
FMeshBatch& Mesh = Collector.AllocateMesh();
|
|
FMeshBatchElement& BatchElement = Mesh.Elements[0];
|
|
BatchElement.IndexBuffer = &IndexBuffer;
|
|
Mesh.bWireframe = bWireframe;
|
|
Mesh.VertexFactory = &VertexFactory;
|
|
Mesh.MaterialRenderProxy = MaterialProxies[SectionIndex];
|
|
BatchElement.PrimitiveUniformBuffer = GetUniformBuffer();
|
|
BatchElement.FirstIndex = Section.FirstIndex;
|
|
BatchElement.NumPrimitives = Section.NumTriangles;
|
|
BatchElement.MinVertexIndex = Section.MinVertexIndex;
|
|
BatchElement.MaxVertexIndex = Section.MaxVertexIndex;
|
|
Mesh.ReverseCulling = IsLocalToWorldDeterminantNegative();
|
|
Mesh.Type = PT_TriangleList;
|
|
Mesh.DepthPriorityGroup = SDPG_World;
|
|
Mesh.bCanApplyViewModeOverrides = true;
|
|
#if WITH_EDITOR
|
|
if (GIsEditor)
|
|
{
|
|
Mesh.BatchHitProxyId = Section.HitProxy ? Section.HitProxy->Id : FHitProxyId();
|
|
}
|
|
#endif
|
|
|
|
SetDebugMaterial(Mesh);
|
|
|
|
Collector.AddMesh(ViewIndex, Mesh);
|
|
}
|
|
}
|
|
|
|
// Highlight selected bone using specialized material - when rendering bones as colors we don't need to run this code as the
|
|
// bone selection is already contained in the rendered colors
|
|
// #note: This renders the geometry again but with the bone selection material. Ideally we'd have one render pass and one
|
|
// material.
|
|
if ((bShowBoneColors || bEnableBoneSelection) && !bSuppressSelectionMaterial && Materials.IsValidIndex(BoneSelectionMaterialID))
|
|
{
|
|
FMaterialRenderProxy* MaterialRenderProxy = Materials[BoneSelectionMaterialID]->GetRenderProxy();
|
|
|
|
FMeshBatch& Mesh = Collector.AllocateMesh();
|
|
FMeshBatchElement& BatchElement = Mesh.Elements[0];
|
|
BatchElement.IndexBuffer = &IndexBuffer;
|
|
Mesh.bWireframe = bWireframe;
|
|
Mesh.VertexFactory = &VertexFactory;
|
|
Mesh.MaterialRenderProxy = MaterialRenderProxy;
|
|
BatchElement.PrimitiveUniformBuffer = GetUniformBuffer();
|
|
BatchElement.FirstIndex = 0;
|
|
BatchElement.NumPrimitives = GetRequiredIndexCount() / 3;
|
|
BatchElement.MinVertexIndex = 0;
|
|
BatchElement.MaxVertexIndex = GetRequiredVertexCount();
|
|
Mesh.ReverseCulling = IsLocalToWorldDeterminantNegative();
|
|
Mesh.Type = PT_TriangleList;
|
|
Mesh.DepthPriorityGroup = SDPG_World;
|
|
Mesh.bCanApplyViewModeOverrides = false;
|
|
Collector.AddMesh(ViewIndex, Mesh);
|
|
}
|
|
|
|
#if !(UE_BUILD_SHIPPING || UE_BUILD_TEST)
|
|
RenderBounds(Collector.GetPDI(ViewIndex), ViewFamily.EngineShowFlags, GetBounds(), IsSelected());
|
|
#endif
|
|
}
|
|
}
|
|
}
|
|
|
|
#if RHI_RAYTRACING
|
|
void FGeometryCollectionSceneProxy::GetDynamicRayTracingInstances(FRayTracingMaterialGatheringContext& Context, TArray<struct FRayTracingInstance>& OutRayTracingInstances)
|
|
{
|
|
if (GRayTracingGeometryCollectionProxyMeshes == 0)
|
|
{
|
|
return;
|
|
}
|
|
|
|
QUICK_SCOPE_CYCLE_COUNTER(STAT_GeometryCollectionSceneProxy_GetDynamicRayTracingInstances);
|
|
|
|
if (GetRequiredVertexCount())
|
|
{
|
|
const uint32 LODIndex = 0;
|
|
const bool bWireframe = false; //AllowDebugViewmodes();//&& ViewFamily.EngineShowFlags.Wireframe;
|
|
|
|
// render original mesh if it isn't dynamic and there is an unfractured mesh
|
|
// #todo(dmp): refactor this to share more code later
|
|
const bool bIsDynamic = DynamicData && DynamicData->IsDynamic;
|
|
|
|
//Loose parameter needs to be updated every frame
|
|
FGeometryCollectionMeshCollectorResources* CollectorResources;
|
|
CollectorResources = &Context.RayTracingMeshResourceCollector.
|
|
AllocateOneFrameResource<FGeometryCollectionMeshCollectorResources>(GetScene().GetFeatureLevel());
|
|
FGeometryCollectionVertexFactory& GeometryCollectionVertexFactory = CollectorResources->GetVertexFactory();
|
|
|
|
// Render dynamic objects
|
|
if (!GeometryCollectionVertexFactory.GetType()->SupportsRayTracingDynamicGeometry())
|
|
{
|
|
return;
|
|
}
|
|
|
|
SetupVertexFactory(GeometryCollectionVertexFactory);
|
|
|
|
FGeometryCollectionIndexBuffer* ActiveIndexBuffer = bIsDynamic ? &IndexBuffer : &OriginalMeshIndexBuffer;
|
|
UpdatingRayTracingGeometry_RenderingThread(ActiveIndexBuffer);
|
|
|
|
#if GEOMETRYCOLLECTION_EDITOR_SELECTION
|
|
const TArray<FGeometryCollectionSection>& SectionArray = bUsesSubSections && SubSections.Num() ? SubSections : Sections;
|
|
UE_LOG(FGeometryCollectionSceneProxyLogging, VeryVerbose, TEXT("GetDynamicMeshElements, bUseSubSections=%d, NumSections=%d for %p."), bUsesSubSections, SectionArray.Num(), this);
|
|
#else
|
|
const TArray<FGeometryCollectionSection>& SectionArray = Sections;
|
|
#endif
|
|
const int32 InstanceCount = SectionArray.Num();
|
|
|
|
if (InstanceCount > 0 && RayTracingGeometry.RayTracingGeometryRHI.IsValid())
|
|
{
|
|
|
|
FRayTracingInstance RayTracingInstance;
|
|
RayTracingInstance.Geometry = &RayTracingGeometry;
|
|
RayTracingInstance.InstanceTransforms.Emplace(GetLocalToWorld());
|
|
|
|
// Grab the material proxies we'll be using for each section
|
|
TArray<FMaterialRenderProxy*, TInlineAllocator<32>> MaterialProxies;
|
|
|
|
for (int32 SectionIndex = 0; SectionIndex < SectionArray.Num(); ++SectionIndex)
|
|
{
|
|
const FGeometryCollectionSection& Section = SectionArray[SectionIndex];
|
|
|
|
//TODO: Add BoneColor support in Path/Ray tracing?
|
|
FMaterialRenderProxy* MaterialProxy= Materials[Section.MaterialID]->GetRenderProxy();
|
|
|
|
if (MaterialProxy == nullptr)
|
|
{
|
|
MaterialProxy = UMaterial::GetDefaultMaterial(MD_Surface)->GetRenderProxy();
|
|
}
|
|
|
|
MaterialProxies.Add(MaterialProxy);
|
|
}
|
|
|
|
int32 MaxVertexIndex = 0;
|
|
for (int32 SectionIndex = 0; SectionIndex < SectionArray.Num(); ++SectionIndex)
|
|
{
|
|
const FGeometryCollectionSection& Section = SectionArray[SectionIndex];
|
|
|
|
// Draw the mesh
|
|
|
|
FMeshBatch& Mesh = RayTracingInstance.Materials.AddDefaulted_GetRef();
|
|
Mesh.bWireframe = bWireframe;//bWireframe needs viewfamily access ?
|
|
Mesh.SegmentIndex = SectionIndex;
|
|
Mesh.VertexFactory = &GeometryCollectionVertexFactory;
|
|
Mesh.MaterialRenderProxy = MaterialProxies[SectionIndex];
|
|
Mesh.LODIndex = LODIndex;
|
|
Mesh.ReverseCulling = IsLocalToWorldDeterminantNegative();
|
|
Mesh.bDisableBackfaceCulling = true;
|
|
Mesh.Type = PT_TriangleList;
|
|
Mesh.DepthPriorityGroup = SDPG_World;
|
|
Mesh.bCanApplyViewModeOverrides = true;
|
|
|
|
FMeshBatchElement& BatchElement = Mesh.Elements[0];
|
|
BatchElement.IndexBuffer = ActiveIndexBuffer;
|
|
BatchElement.PrimitiveUniformBuffer = GetUniformBuffer();
|
|
BatchElement.FirstIndex = Section.FirstIndex;
|
|
BatchElement.NumPrimitives = Section.NumTriangles;
|
|
BatchElement.MinVertexIndex = Section.MinVertexIndex;
|
|
BatchElement.MaxVertexIndex = Section.MaxVertexIndex;
|
|
BatchElement.NumInstances = 1;
|
|
|
|
MaxVertexIndex = std::max(Section.MaxVertexIndex, MaxVertexIndex);
|
|
#if WITH_EDITOR
|
|
if (GIsEditor)
|
|
{
|
|
Mesh.BatchHitProxyId = Section.HitProxy ? Section.HitProxy->Id : FHitProxyId();
|
|
}
|
|
#endif
|
|
//#TODO: bone color, bone selection and render bound?
|
|
|
|
FRWBuffer* VertexBuffer = RayTracingDynamicVertexBuffer.NumBytes > 0 ? &RayTracingDynamicVertexBuffer : nullptr;
|
|
|
|
const uint32 VertexCount = Section.MaxVertexIndex + 1;
|
|
Context.DynamicRayTracingGeometriesToUpdate.Add(
|
|
FRayTracingDynamicGeometryUpdateParams
|
|
{
|
|
RayTracingInstance.Materials,
|
|
false,
|
|
VertexCount,
|
|
VertexCount * (uint32)sizeof(FVector3f),
|
|
RayTracingGeometry.Initializer.TotalPrimitiveCount,
|
|
&RayTracingGeometry,
|
|
VertexBuffer,
|
|
true
|
|
}
|
|
);
|
|
}
|
|
|
|
RayTracingInstance.BuildInstanceMaskAndFlags(GetScene().GetFeatureLevel());
|
|
|
|
OutRayTracingInstances.Emplace(RayTracingInstance);
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
void FGeometryCollectionSceneProxy::UpdatingRayTracingGeometry_RenderingThread(FGeometryCollectionIndexBuffer* InIndexBuffer)
|
|
{
|
|
#if GEOMETRYCOLLECTION_EDITOR_SELECTION
|
|
const TArray<FGeometryCollectionSection>& SectionArray = bUsesSubSections && SubSections.Num() ? SubSections : Sections;
|
|
UE_LOG(FGeometryCollectionSceneProxyLogging, VeryVerbose, TEXT("GetDynamicMeshElements, bUseSubSections=%d, NumSections=%d for %p."), bUsesSubSections, SectionArray.Num(), this);
|
|
#else
|
|
const TArray<FGeometryCollectionSection>& SectionArray = Sections;
|
|
#endif
|
|
const int32 InstanceCount = SectionArray.Num();//InstanceSceneData.Num();
|
|
|
|
if (InIndexBuffer && bGeometryResourceUpdated)
|
|
{
|
|
RayTracingGeometry.Initializer.Segments.Empty();
|
|
RayTracingGeometry.Initializer.TotalPrimitiveCount = 0;
|
|
|
|
for (int SectionIndex = 0; SectionIndex < InstanceCount; ++SectionIndex)
|
|
{
|
|
const FGeometryCollectionSection& Section = SectionArray[SectionIndex];
|
|
FRayTracingGeometrySegment Segment;
|
|
Segment.FirstPrimitive = Section.FirstIndex / 3;
|
|
Segment.VertexBuffer = VertexBuffers.PositionVertexBuffer.VertexBufferRHI;
|
|
Segment.NumPrimitives = Section.NumTriangles;
|
|
Segment.MaxVertices = VertexBuffers.PositionVertexBuffer.GetNumVertices();
|
|
RayTracingGeometry.Initializer.Segments.Add(Segment);
|
|
RayTracingGeometry.Initializer.TotalPrimitiveCount += Section.NumTriangles;
|
|
}
|
|
|
|
if (RayTracingGeometry.Initializer.TotalPrimitiveCount > 0)
|
|
{
|
|
RayTracingGeometry.Initializer.IndexBuffer = InIndexBuffer->IndexBufferRHI;
|
|
RayTracingGeometry.UpdateRHI();
|
|
}
|
|
|
|
bGeometryResourceUpdated = false;
|
|
}
|
|
}
|
|
|
|
#endif
|
|
|
|
FPrimitiveViewRelevance FGeometryCollectionSceneProxy::GetViewRelevance(const FSceneView* View) const
|
|
{
|
|
FPrimitiveViewRelevance Result;
|
|
Result.bDrawRelevance = IsShown(View);
|
|
Result.bShadowRelevance = IsShadowCast(View);
|
|
Result.bDynamicRelevance = true;
|
|
Result.bRenderInMainPass = ShouldRenderInMainPass();
|
|
Result.bUsesLightingChannels = GetLightingChannelMask() != GetDefaultLightingChannelMask();
|
|
Result.bRenderCustomDepth = ShouldRenderCustomDepth();
|
|
Result.bTranslucentSelfShadow = bCastVolumetricTranslucentShadow;
|
|
MaterialRelevance.SetPrimitiveViewRelevance(Result);
|
|
|
|
Result.bVelocityRelevance = DrawsVelocity() && Result.bOpaque && Result.bRenderInMainPass;
|
|
|
|
return Result;
|
|
}
|
|
|
|
#if WITH_EDITOR
|
|
HHitProxy* FGeometryCollectionSceneProxy::CreateHitProxies(UPrimitiveComponent* Component, TArray<TRefCountPtr<HHitProxy> >& OutHitProxies)
|
|
{
|
|
// In order to be able to click on static meshes when they're batched up, we need to have catch all default
|
|
// hit proxy to return.
|
|
HHitProxy* DefaultHitProxy = FPrimitiveSceneProxy::CreateHitProxies(Component, OutHitProxies);
|
|
WholeObjectHitProxyColor = DefaultHitProxy->Id.GetColor();
|
|
|
|
// @todo FractureTools - Reconcile with subsection hit proxies. Subsection is a draw call per hit proxy but is not suitable per-vertex as written
|
|
if (bEnableBoneSelection)
|
|
{
|
|
UGeometryCollectionComponent* GeometryCollectionComp = CastChecked<UGeometryCollectionComponent>(Component);
|
|
int32 NumTransforms = GeometryCollectionComp->GetTransformArray().Num();
|
|
PerBoneHitProxies.Empty();
|
|
for (int32 TransformIndex = 0; TransformIndex < NumTransforms; ++TransformIndex)
|
|
{
|
|
HGeometryCollectionBone* HitProxy = new HGeometryCollectionBone(GeometryCollectionComp, TransformIndex);
|
|
PerBoneHitProxies.Add(HitProxy);
|
|
}
|
|
|
|
OutHitProxies.Append(PerBoneHitProxies);
|
|
}
|
|
else if (Component->GetOwner())
|
|
{
|
|
#if GEOMETRYCOLLECTION_EDITOR_SELECTION
|
|
// Note the below-created subsection hitproxies are never drawn, because the per-vertex hitproxy
|
|
// rendering path is always on for geometry collections (i.e., USE_PER_VERTEX_HITPROXY_ID is 1)
|
|
const int32 NumTransforms = (Sections.Num() > 0) ? SubSectionHitProxies.Num() / Sections.Num(): 0;
|
|
for (int32 SectionIndex = 0; SectionIndex < Sections.Num(); ++SectionIndex)
|
|
{
|
|
// Create HitProxy for regular material based sections, and update existing section
|
|
FGeometryCollectionSection& Section = Sections[SectionIndex];
|
|
|
|
const int32 MaterialID = Section.MaterialID;
|
|
HActor* const HitProxy = new HActor(Component->GetOwner(), Component, SectionIndex, MaterialID);
|
|
|
|
OutHitProxies.Add(HitProxy);
|
|
Section.HitProxy = HitProxy;
|
|
|
|
// Create HitProxy per transform index using the same material Id than the current sections
|
|
// All combinations of material id/transform index are populated,
|
|
// since it can't be assumed that any of them won't be needed.
|
|
const int32 SectionOffset = SectionIndex * NumTransforms;
|
|
|
|
for (int32 TransformIndex = 0; TransformIndex < NumTransforms; ++TransformIndex)
|
|
{
|
|
static const int32 SubSectionIndex = INDEX_NONE; // The index will get updated later for existing subsections
|
|
|
|
HGeometryCollection* const SubSectionHitProxy = new HGeometryCollection(Component->GetOwner(), Component, SubSectionIndex, MaterialID, TransformIndex);
|
|
|
|
OutHitProxies.Add(SubSectionHitProxy);
|
|
SubSectionHitProxies[SectionOffset + TransformIndex] = SubSectionHitProxy;
|
|
}
|
|
}
|
|
#else
|
|
for (int32 SectionIndex = 0; SectionIndex < Sections.Num(); ++SectionIndex)
|
|
{
|
|
// Create HitProxy for regular material based sections, and update existing section
|
|
FGeometryCollectionSection& Section = Sections[SectionIndex];
|
|
|
|
const int32 MaterialID = Section.MaterialID;
|
|
HActor* const HitProxy = new HActor(Component->GetOwner(), Component, SectionIndex, MaterialID);
|
|
|
|
OutHitProxies.Add(HitProxy);
|
|
Section.HitProxy = HitProxy;
|
|
}
|
|
#endif
|
|
}
|
|
|
|
return DefaultHitProxy;
|
|
}
|
|
#endif // WITH_EDITOR
|
|
|
|
#if GEOMETRYCOLLECTION_EDITOR_SELECTION
|
|
void FGeometryCollectionSceneProxy::UseSubSections(bool bInUsesSubSections, bool bForceInit)
|
|
{
|
|
if (!bForceInit)
|
|
{
|
|
bUsesSubSections = bInUsesSubSections;
|
|
}
|
|
else if (bInUsesSubSections)
|
|
{
|
|
FGeometryCollectionSceneProxy* GeometryCollectionSceneProxy = this;
|
|
ENQUEUE_RENDER_COMMAND(InitializeSubSections)(
|
|
[GeometryCollectionSceneProxy](FRHICommandListImmediate& RHICmdList)
|
|
{
|
|
if (GeometryCollectionSceneProxy)
|
|
{
|
|
GeometryCollectionSceneProxy->InitializeSubSections_RenderThread();
|
|
GeometryCollectionSceneProxy->bUsesSubSections = true;
|
|
UE_LOG(FGeometryCollectionSceneProxyLogging, Verbose, TEXT("UseSubSections, %d SubSections initialized for %p."), GeometryCollectionSceneProxy->SubSections.Num(), GeometryCollectionSceneProxy);
|
|
}
|
|
});
|
|
}
|
|
else
|
|
{
|
|
FGeometryCollectionSceneProxy* GeometryCollectionSceneProxy = this;
|
|
ENQUEUE_RENDER_COMMAND(ReleaseSubSections)(
|
|
[GeometryCollectionSceneProxy](FRHICommandListImmediate& RHICmdList)
|
|
{
|
|
if (GeometryCollectionSceneProxy)
|
|
{
|
|
GeometryCollectionSceneProxy->ReleaseSubSections_RenderThread();
|
|
GeometryCollectionSceneProxy->bUsesSubSections = false;
|
|
UE_LOG(FGeometryCollectionSceneProxyLogging, Verbose, TEXT("UseSubSections, SubSections released for %p."), GeometryCollectionSceneProxy);
|
|
}
|
|
});
|
|
}
|
|
}
|
|
|
|
void FGeometryCollectionSceneProxy::InitializeSubSections_RenderThread()
|
|
{
|
|
// Exit now if there isn't any data
|
|
if (!ConstantData)
|
|
{
|
|
SubSections.Empty();
|
|
SubSectionHitProxyIndexMap.Empty();
|
|
return;
|
|
}
|
|
|
|
// Retrieve the correct arrays depending on the dynamic state
|
|
const bool bIsDynamic = DynamicData && DynamicData->IsDynamic;
|
|
const TArray<FGeometryCollectionSection>& SectionArray = bIsDynamic ? Sections: ConstantData->OriginalMeshSections;
|
|
const TArray<FIntVector>& IndexArray = bIsDynamic ? ConstantData->Indices: ConstantData->OriginalMeshIndices;
|
|
const TArray<int32>& BoneMap = ConstantData->BoneMap;
|
|
|
|
// Reserve sub sections array with a minimum of one transform per section
|
|
SubSections.Empty(SectionArray.Num());
|
|
SubSectionHitProxyIndexMap.Empty(SectionArray.Num());
|
|
|
|
// Lambda that adds a new subsection and update the HitProxy section index
|
|
auto AddSubSection = [this, IndexArray](int32 HitProxyIndex, const FGeometryCollectionSection& Section, int32 FirstFaceIndex, int32 EndFaceIndex)
|
|
{
|
|
// Find the matching HitProxy for this transform/section
|
|
HGeometryCollection* const SubSectionHitProxy = SubSectionHitProxies[HitProxyIndex];
|
|
|
|
// Add the subsection
|
|
FGeometryCollectionSection SubSection;
|
|
SubSection.MaterialID = Section.MaterialID;
|
|
SubSection.FirstIndex = FirstFaceIndex * 3;
|
|
SubSection.NumTriangles = EndFaceIndex - FirstFaceIndex;
|
|
{
|
|
// Find out new min/max vertex indices
|
|
check(SubSection.NumTriangles > 0);
|
|
SubSection.MinVertexIndex = TNumericLimits<int32>::Max();
|
|
SubSection.MaxVertexIndex = TNumericLimits<int32>::Min();
|
|
for (int32 FaceIndex = FirstFaceIndex; FaceIndex < EndFaceIndex; ++FaceIndex)
|
|
{
|
|
SubSection.MinVertexIndex = FMath::Min(SubSection.MinVertexIndex, IndexArray[FaceIndex].GetMin());
|
|
SubSection.MaxVertexIndex = FMath::Max(SubSection.MaxVertexIndex, IndexArray[FaceIndex].GetMax());
|
|
}
|
|
check(SubSection.MinVertexIndex >= Section.MinVertexIndex && SubSection.MinVertexIndex <= Section.MaxVertexIndex)
|
|
check(SubSection.MaxVertexIndex >= Section.MinVertexIndex && SubSection.MaxVertexIndex <= Section.MaxVertexIndex)
|
|
}
|
|
SubSection.HitProxy = SubSectionHitProxy;
|
|
const int32 SubSectionIndex = SubSections.Add(SubSection);
|
|
|
|
// Keep the HitProxy index in a map in case this section's HitProxy pointer ever needs to be updated (e.g. after CreateHitProxies is called)
|
|
SubSectionHitProxyIndexMap.Add(SubSectionIndex, HitProxyIndex);
|
|
|
|
// Update HitProxy with this subsection index
|
|
if (SubSectionHitProxy)
|
|
{
|
|
SubSectionHitProxy->SectionIndex = SubSectionIndex;
|
|
}
|
|
};
|
|
|
|
// Create subsections per transform
|
|
const int32 NumTransforms = (SectionArray.Num() > 0) ? SubSectionHitProxies.Num() / SectionArray.Num(): 0;
|
|
|
|
for (int32 SectionIndex = 0; SectionIndex < SectionArray.Num(); ++SectionIndex)
|
|
{
|
|
const int32 SectionOffset = SectionIndex * NumTransforms;
|
|
|
|
const FGeometryCollectionSection& Section = SectionArray[SectionIndex];
|
|
check(Section.NumTriangles > 0); // Sections are not created with zero triangles
|
|
|
|
const int32 FirstFaceIndex = Section.FirstIndex / 3;
|
|
const int32 EndFaceIndex = FirstFaceIndex + Section.NumTriangles;
|
|
|
|
int32 TransformIndex = BoneMap[IndexArray[FirstFaceIndex][0]]; // Assumes one transform per triangle
|
|
int32 FaceIndex = FirstFaceIndex;
|
|
|
|
for (int32 NextFaceIndex = FaceIndex + 1; NextFaceIndex < EndFaceIndex; ++NextFaceIndex)
|
|
{
|
|
const int32 NextTransformIndex = BoneMap[IndexArray[NextFaceIndex][0]]; // Assumes one transform per triangle
|
|
if (TransformIndex != NextTransformIndex)
|
|
{
|
|
// Add the current subsection
|
|
AddSubSection(SectionOffset + TransformIndex, Section, FaceIndex, NextFaceIndex);
|
|
|
|
// Update variables for the next subsection
|
|
TransformIndex = NextTransformIndex;
|
|
FaceIndex = NextFaceIndex;
|
|
}
|
|
}
|
|
|
|
// Add the last remaining subsection
|
|
AddSubSection(SectionOffset + TransformIndex, Section, FaceIndex, EndFaceIndex);
|
|
}
|
|
}
|
|
|
|
void FGeometryCollectionSceneProxy::ReleaseSubSections_RenderThread()
|
|
{
|
|
SubSections.Reset();
|
|
SubSectionHitProxyIndexMap.Reset();
|
|
}
|
|
|
|
#endif // #if GEOMETRYCOLLECTION_EDITOR_SELECTION
|
|
|
|
void FGeometryCollectionSceneProxy::GetPreSkinnedLocalBounds(FBoxSphereBounds& OutBounds) const
|
|
{
|
|
OutBounds = PreSkinnedBounds;
|
|
}
|
|
|
|
FNaniteGeometryCollectionSceneProxy::FNaniteGeometryCollectionSceneProxy(UGeometryCollectionComponent* Component)
|
|
: Nanite::FSceneProxyBase(Component)
|
|
, GeometryCollection(Component->GetRestCollection())
|
|
, bCurrentlyInMotion(false)
|
|
, bRequiresGPUSceneUpdate(false)
|
|
{
|
|
LLM_SCOPE_BYTAG(Nanite);
|
|
|
|
// Nanite requires GPUScene
|
|
checkSlow(UseGPUScene(GMaxRHIShaderPlatform, GetScene().GetFeatureLevel()));
|
|
checkSlow(DoesPlatformSupportNanite(GMaxRHIShaderPlatform));
|
|
|
|
// Should have valid Nanite data at this point.
|
|
check(GeometryCollection->HasNaniteData());
|
|
NaniteResourceID = GeometryCollection->GetNaniteResourceID();
|
|
NaniteHierarchyOffset = GeometryCollection->GetNaniteHierarchyOffset();
|
|
|
|
MaterialRelevance = Component->GetMaterialRelevance(Component->GetScene()->GetFeatureLevel());
|
|
|
|
// Nanite supports the GPUScene instance data buffer.
|
|
bSupportsInstanceDataBuffer = true;
|
|
|
|
// We always have correct instance transforms, skip GPUScene updates if allowed.
|
|
bShouldUpdateGPUSceneTransforms = (GGeometryCollectionOptimizedTransforms == 0);
|
|
|
|
bSupportsDistanceFieldRepresentation = false;
|
|
bSupportsMeshCardRepresentation = false;
|
|
|
|
// Use fast path that does not update static draw lists.
|
|
bStaticElementsAlwaysUseProxyPrimitiveUniformBuffer = true;
|
|
|
|
// Nanite always uses GPUScene, so we can skip expensive primitive uniform buffer updates.
|
|
bVFRequiresPrimitiveUniformBuffer = false;
|
|
|
|
// Indicates if 1 or more materials contain settings not supported by Nanite.
|
|
bHasMaterialErrors = false;
|
|
|
|
bHasPerInstanceHierarchyOffset = true;
|
|
bHasPerInstanceLocalBounds = true;
|
|
bHasPerInstanceDynamicData = true;
|
|
|
|
// Check if the assigned material can be rendered in Nanite. If not, default.
|
|
// TODO: Handle cases like geometry collections adding a "selected geometry" material with translucency.
|
|
const bool IsRenderable = true;// Nanite::FSceneProxy::IsNaniteRenderable(MaterialRelevance);
|
|
|
|
if (!IsRenderable)
|
|
{
|
|
bHasMaterialErrors = true;
|
|
}
|
|
|
|
const TSharedPtr<FGeometryCollection, ESPMode::ThreadSafe> Collection = GeometryCollection->GetGeometryCollection();
|
|
const TManagedArray<FGeometryCollectionSection>& SectionsArray = Component->GetSectionsArray();
|
|
|
|
MaterialSections.SetNumZeroed(SectionsArray.Num());
|
|
|
|
for (int32 SectionIndex = 0; SectionIndex < SectionsArray.Num(); ++SectionIndex)
|
|
{
|
|
const FGeometryCollectionSection& MeshSection = SectionsArray[SectionIndex];
|
|
const bool bValidMeshSection = MeshSection.MaterialID != INDEX_NONE;
|
|
|
|
// Keep track of highest observed material index.
|
|
MaterialMaxIndex = FMath::Max(MeshSection.MaterialID, MaterialMaxIndex);
|
|
|
|
UMaterialInterface* MaterialInterface = bValidMeshSection ? Component->GetMaterial(MeshSection.MaterialID) : nullptr;
|
|
|
|
// TODO: PROG_RASTER (Implement programmable raster support)
|
|
const bool bInvalidMaterial = !MaterialInterface || MaterialInterface->GetBlendMode() != BLEND_Opaque;
|
|
if (bInvalidMaterial)
|
|
{
|
|
bHasMaterialErrors = true;
|
|
if (MaterialInterface)
|
|
{
|
|
UE_LOG
|
|
(
|
|
LogStaticMesh, Warning,
|
|
TEXT("Invalid material [%s] used on Nanite geometry collection [%s] - forcing default material instead. Only opaque blend mode is currently supported, [%s] blend mode was specified."),
|
|
*MaterialInterface->GetName(),
|
|
*GeometryCollection->GetName(),
|
|
*GetBlendModeString(MaterialInterface->GetBlendMode())
|
|
);
|
|
}
|
|
}
|
|
|
|
const bool bForceDefaultMaterial = /*!!FORCE_NANITE_DEFAULT_MATERIAL ||*/ bHasMaterialErrors;
|
|
if (bForceDefaultMaterial)
|
|
{
|
|
MaterialInterface = UMaterial::GetDefaultMaterial(MD_Surface);
|
|
}
|
|
|
|
// Should never be null here
|
|
check(MaterialInterface != nullptr);
|
|
|
|
// Should always be opaque blend mode here.
|
|
check(MaterialInterface->GetBlendMode() == BLEND_Opaque);
|
|
|
|
MaterialSections[SectionIndex].ShadingMaterialProxy = MaterialInterface->GetRenderProxy();
|
|
MaterialSections[SectionIndex].RasterMaterialProxy = MaterialInterface->GetRenderProxy(); // TODO: PROG_RASTER (Implement programmable raster support)
|
|
MaterialSections[SectionIndex].MaterialIndex = MeshSection.MaterialID;
|
|
}
|
|
|
|
const bool bHasGeometryBoundingBoxes =
|
|
Collection->HasAttribute("BoundingBox", FGeometryCollection::GeometryGroup) &&
|
|
Collection->NumElements(FGeometryCollection::GeometryGroup);
|
|
|
|
const bool bHasTransformBoundingBoxes =
|
|
Collection->NumElements(FGeometryCollection::TransformGroup) &&
|
|
Collection->HasAttribute("BoundingBox", FGeometryCollection::TransformGroup) &&
|
|
Collection->HasAttribute("TransformToGeometryIndex", FGeometryCollection::TransformGroup);
|
|
|
|
int32 NumGeometry = 0;
|
|
if (bHasGeometryBoundingBoxes)
|
|
{
|
|
NumGeometry = Collection->NumElements(FGeometryCollection::GeometryGroup);
|
|
GeometryNaniteData.SetNumUninitialized(NumGeometry);
|
|
|
|
const TManagedArray<FBox>& BoundingBoxes = Collection->GetAttribute<FBox>("BoundingBox", FGeometryCollection::GeometryGroup);
|
|
for (int32 GeometryIndex = 0; GeometryIndex < NumGeometry; ++GeometryIndex)
|
|
{
|
|
FGeometryNaniteData& Instance = GeometryNaniteData[GeometryIndex];
|
|
Instance.HierarchyOffset = GeometryCollection->GetNaniteHierarchyOffset(GeometryIndex);
|
|
Instance.LocalBounds = BoundingBoxes[GeometryIndex];
|
|
}
|
|
}
|
|
else if (bHasTransformBoundingBoxes)
|
|
{
|
|
Nanite::FResources& Resource = GeometryCollection->NaniteData->NaniteResource;
|
|
NumGeometry = Resource.HierarchyRootOffsets.Num();
|
|
GeometryNaniteData.SetNumUninitialized(NumGeometry);
|
|
|
|
const TManagedArray<FBox>& BoundingBoxes = Collection->GetAttribute<FBox>("BoundingBox", FGeometryCollection::TransformGroup);
|
|
const TManagedArray<int32>& TransformToGeometry = Collection->GetAttribute<int32>("TransformToGeometryIndex", FGeometryCollection::TransformGroup);
|
|
const int32 NumTransforms = TransformToGeometry.Num();
|
|
for (int32 TransformIndex = 0; TransformIndex < NumTransforms; ++TransformIndex)
|
|
{
|
|
const int32 GeometryIndex = TransformToGeometry[TransformIndex];
|
|
if (GeometryIndex > INDEX_NONE)
|
|
{
|
|
FGeometryNaniteData& Instance = GeometryNaniteData[GeometryIndex];
|
|
Instance.HierarchyOffset = GeometryCollection->GetNaniteHierarchyOffset(GeometryIndex);
|
|
Instance.LocalBounds = BoundingBoxes[TransformIndex];
|
|
}
|
|
}
|
|
}
|
|
|
|
// Need to specify initial instance list, even with just identity transforms, so that the
|
|
// GPUScene instance data allocator reserves space for the instances early on. The instance
|
|
// transforms will be corrected during the first frame before any rendering occurs.
|
|
InstanceSceneData.SetNumUninitialized(NumGeometry);
|
|
InstanceDynamicData.SetNumUninitialized(NumGeometry);
|
|
InstanceLocalBounds.SetNumUninitialized(NumGeometry);
|
|
InstanceHierarchyOffset.SetNumZeroed(NumGeometry);
|
|
|
|
for (int32 GeometryIndex = 0; GeometryIndex < NumGeometry; ++GeometryIndex)
|
|
{
|
|
FPrimitiveInstance& SceneData = InstanceSceneData[GeometryIndex];
|
|
SceneData.LocalToPrimitive.SetIdentity();
|
|
|
|
FPrimitiveInstanceDynamicData& DynamicData = InstanceDynamicData[GeometryIndex];
|
|
DynamicData.PrevLocalToPrimitive.SetIdentity();
|
|
|
|
InstanceLocalBounds[GeometryIndex] = FRenderBounds();
|
|
}
|
|
}
|
|
|
|
FPrimitiveViewRelevance FNaniteGeometryCollectionSceneProxy::GetViewRelevance(const FSceneView* View) const
|
|
{
|
|
LLM_SCOPE_BYTAG(Nanite);
|
|
|
|
FPrimitiveViewRelevance Result;
|
|
Result.bDrawRelevance = IsShown(View) && View->Family->EngineShowFlags.NaniteMeshes;
|
|
Result.bShadowRelevance = IsShadowCast(View);
|
|
Result.bUsesLightingChannels = GetLightingChannelMask() != GetDefaultLightingChannelMask();
|
|
|
|
// Always render the Nanite mesh data with static relevance.
|
|
Result.bStaticRelevance = true;
|
|
|
|
// Should always be covered by constructor of Nanite scene proxy.
|
|
Result.bRenderInMainPass = true;
|
|
|
|
#if WITH_EDITOR
|
|
// Only check these in the editor
|
|
Result.bEditorVisualizeLevelInstanceRelevance = IsEditingLevelInstanceChild();
|
|
Result.bEditorStaticSelectionRelevance = (IsSelected() || IsHovered());
|
|
#endif
|
|
|
|
bool bSetDynamicRelevance = false;
|
|
|
|
Result.bOpaque = true;
|
|
|
|
MaterialRelevance.SetPrimitiveViewRelevance(Result);
|
|
Result.bVelocityRelevance = Result.bOpaque && Result.bRenderInMainPass && DrawsVelocity();
|
|
|
|
return Result;
|
|
}
|
|
|
|
#if WITH_EDITOR
|
|
HHitProxy* FNaniteGeometryCollectionSceneProxy::CreateHitProxies(UPrimitiveComponent* Component, TArray<TRefCountPtr<HHitProxy>>& OutHitProxies)
|
|
{
|
|
LLM_SCOPE_BYTAG(Nanite);
|
|
|
|
if (Component->GetOwner())
|
|
{
|
|
// Generate separate hit proxies for each material section, so that we can perform hit tests against each one.
|
|
for (int32 SectionIndex = 0; SectionIndex < MaterialSections.Num(); ++SectionIndex)
|
|
{
|
|
FMaterialSection& Section = MaterialSections[SectionIndex];
|
|
HHitProxy* ActorHitProxy = new HActor(Component->GetOwner(), Component, SectionIndex, SectionIndex);
|
|
check(!Section.HitProxy);
|
|
Section.HitProxy = ActorHitProxy;
|
|
OutHitProxies.Add(ActorHitProxy);
|
|
}
|
|
}
|
|
|
|
return Super::CreateHitProxies(Component, OutHitProxies);
|
|
}
|
|
#endif
|
|
|
|
void FNaniteGeometryCollectionSceneProxy::DrawStaticElements(FStaticPrimitiveDrawInterface* PDI)
|
|
{
|
|
const FLightCacheInterface* LCI = nullptr;
|
|
DrawStaticElementsInternal(PDI, LCI);
|
|
}
|
|
|
|
uint32 FNaniteGeometryCollectionSceneProxy::GetMemoryFootprint() const
|
|
{
|
|
return sizeof(*this) + GetAllocatedSize();
|
|
}
|
|
|
|
void FNaniteGeometryCollectionSceneProxy::OnTransformChanged()
|
|
{
|
|
}
|
|
|
|
void FNaniteGeometryCollectionSceneProxy::GetNaniteResourceInfo(uint32& ResourceID, uint32& HierarchyOffset, uint32& ImposterIndex) const
|
|
{
|
|
ResourceID = NaniteResourceID;
|
|
HierarchyOffset = NaniteHierarchyOffset;
|
|
ImposterIndex = INDEX_NONE; // Imposters are not supported (yet?)
|
|
}
|
|
|
|
void FNaniteGeometryCollectionSceneProxy::SetConstantData_RenderThread(FGeometryCollectionConstantData* NewConstantData, bool ForceInit)
|
|
{
|
|
const TSharedPtr<FGeometryCollection, ESPMode::ThreadSafe> Collection = GeometryCollection->GetGeometryCollection();
|
|
const TManagedArray<int32>& TransformToGeometryIndices = Collection->TransformToGeometryIndex;
|
|
|
|
const int32 TransformCount = NewConstantData->RestTransforms.Num();
|
|
check(TransformCount == TransformToGeometryIndices.Num());
|
|
InstanceSceneData.Reset(TransformCount);
|
|
InstanceDynamicData.Reset(TransformCount);
|
|
InstanceLocalBounds.Reset(TransformCount);
|
|
InstanceHierarchyOffset.Reset(TransformCount);
|
|
|
|
for (int32 TransformIndex = 0; TransformIndex < TransformCount; ++TransformIndex)
|
|
{
|
|
const int32 TransformToGeometryIndex = TransformToGeometryIndices[TransformIndex];
|
|
if (!Collection->IsGeometry(TransformIndex))
|
|
{
|
|
continue;
|
|
}
|
|
|
|
const FGeometryNaniteData& NaniteData = GeometryNaniteData[TransformToGeometryIndex];
|
|
|
|
FPrimitiveInstance& Instance = InstanceSceneData.Emplace_GetRef();
|
|
Instance.LocalToPrimitive = NewConstantData->RestTransforms[TransformIndex];
|
|
|
|
FPrimitiveInstanceDynamicData& DynamicData = InstanceDynamicData.Emplace_GetRef();
|
|
DynamicData.PrevLocalToPrimitive = Instance.LocalToPrimitive;
|
|
|
|
InstanceLocalBounds.Emplace(NaniteData.LocalBounds);
|
|
InstanceHierarchyOffset.Emplace(NaniteData.HierarchyOffset);
|
|
}
|
|
|
|
delete NewConstantData;
|
|
}
|
|
|
|
void FNaniteGeometryCollectionSceneProxy::SetDynamicData_RenderThread(FGeometryCollectionDynamicData* NewDynamicData)
|
|
{
|
|
// Are we currently simulating?
|
|
if (NewDynamicData->IsDynamic)
|
|
{
|
|
const TSharedPtr<FGeometryCollection, ESPMode::ThreadSafe> Collection = GeometryCollection->GetGeometryCollection();
|
|
const TManagedArray<int32>& TransformToGeometryIndices = Collection->TransformToGeometryIndex;
|
|
const TManagedArray<TSet<int32>>& TransformChildren = Collection->Children;
|
|
const TManagedArray<int32>& SimulationType = Collection->SimulationType;
|
|
|
|
const int32 TransformCount = NewDynamicData->Transforms.Num();
|
|
check(TransformCount == TransformToGeometryIndices.Num());
|
|
check(TransformCount == TransformChildren.Num());
|
|
check(TransformCount == NewDynamicData->PrevTransforms.Num());
|
|
InstanceSceneData.Reset(TransformCount);
|
|
InstanceDynamicData.Reset(TransformCount);
|
|
InstanceLocalBounds.Reset(TransformCount);
|
|
InstanceHierarchyOffset.Reset(TransformCount);
|
|
|
|
for (int32 TransformIndex = 0; TransformIndex < TransformCount; ++TransformIndex)
|
|
{
|
|
const int32 TransformToGeometryIndex = TransformToGeometryIndices[TransformIndex];
|
|
if (SimulationType[TransformIndex] != FGeometryCollection::ESimulationTypes::FST_Rigid)
|
|
{
|
|
continue;
|
|
}
|
|
|
|
const FGeometryNaniteData& NaniteData = GeometryNaniteData[TransformToGeometryIndex];
|
|
|
|
FPrimitiveInstance& Instance = InstanceSceneData.Emplace_GetRef();
|
|
Instance.LocalToPrimitive = NewDynamicData->Transforms[TransformIndex];
|
|
|
|
FPrimitiveInstanceDynamicData& DynamicData = InstanceDynamicData.Emplace_GetRef();
|
|
|
|
if (bCurrentlyInMotion)
|
|
{
|
|
DynamicData.PrevLocalToPrimitive = NewDynamicData->PrevTransforms[TransformIndex];
|
|
}
|
|
else
|
|
{
|
|
DynamicData.PrevLocalToPrimitive = Instance.LocalToPrimitive;
|
|
}
|
|
|
|
InstanceLocalBounds.Emplace(NaniteData.LocalBounds);
|
|
InstanceHierarchyOffset.Emplace(NaniteData.HierarchyOffset);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
// Rendering base geometry, use rest transforms rather than simulated transforms.
|
|
// ...
|
|
}
|
|
|
|
GDynamicDataPool.Release(NewDynamicData);
|
|
}
|
|
|
|
void FNaniteGeometryCollectionSceneProxy::ResetPreviousTransforms_RenderThread()
|
|
{
|
|
// Reset previous transforms to avoid locked motion vectors
|
|
check(InstanceSceneData.Num() == InstanceDynamicData.Num()); // Sanity check, should always have matching associated arrays
|
|
for (int32 InstanceIndex = 0; InstanceIndex < InstanceSceneData.Num(); ++InstanceIndex)
|
|
{
|
|
InstanceDynamicData[InstanceIndex].PrevLocalToPrimitive = InstanceSceneData[InstanceIndex].LocalToPrimitive;
|
|
}
|
|
}
|
|
|
|
void FNaniteGeometryCollectionSceneProxy::FlushGPUSceneUpdate_GameThread()
|
|
{
|
|
ENQUEUE_RENDER_COMMAND(NaniteProxyUpdateGPUScene)(
|
|
[this](FRHICommandListImmediate& RHICmdList)
|
|
{
|
|
FPrimitiveSceneInfo* NanitePrimitiveInfo = GetPrimitiveSceneInfo();
|
|
if (NanitePrimitiveInfo && GetRequiresGPUSceneUpdate_RenderThread())
|
|
{
|
|
// Attempt to queue up a GPUScene update - maintain dirty flag if the request fails.
|
|
const bool bRequiresUpdate = !NanitePrimitiveInfo->RequestGPUSceneUpdate();
|
|
SetRequiresGPUSceneUpdate_RenderThread(bRequiresUpdate);
|
|
}
|
|
}
|
|
);
|
|
}
|
|
|
|
void FNaniteGeometryCollectionSceneProxy::OnMotionBegin()
|
|
{
|
|
bCurrentlyInMotion = true;
|
|
bCanSkipRedundantTransformUpdates = false;
|
|
}
|
|
|
|
void FNaniteGeometryCollectionSceneProxy::OnMotionEnd()
|
|
{
|
|
bCurrentlyInMotion = false;
|
|
bCanSkipRedundantTransformUpdates = true;
|
|
ResetPreviousTransforms_RenderThread();
|
|
}
|
|
|
|
FGeometryCollectionDynamicDataPool::FGeometryCollectionDynamicDataPool()
|
|
{
|
|
FreeList.SetNum(32);
|
|
for (int32 ListIndex = 0; ListIndex < FreeList.Num(); ++ListIndex)
|
|
{
|
|
FreeList[ListIndex] = new FGeometryCollectionDynamicData;
|
|
}
|
|
}
|
|
|
|
FGeometryCollectionDynamicDataPool::~FGeometryCollectionDynamicDataPool()
|
|
{
|
|
FScopeLock ScopeLock(&ListLock);
|
|
|
|
for (FGeometryCollectionDynamicData* Entry : FreeList)
|
|
{
|
|
delete Entry;
|
|
}
|
|
|
|
for (FGeometryCollectionDynamicData* Entry : UsedList)
|
|
{
|
|
delete Entry;
|
|
}
|
|
|
|
FreeList.Empty();
|
|
UsedList.Empty();
|
|
}
|
|
|
|
FGeometryCollectionDynamicData* FGeometryCollectionDynamicDataPool::Allocate()
|
|
{
|
|
FScopeLock ScopeLock(&ListLock);
|
|
|
|
FGeometryCollectionDynamicData* NewEntry = nullptr;
|
|
if (FreeList.Num() > 0)
|
|
{
|
|
NewEntry = FreeList.Pop(false /* no shrinking */);
|
|
}
|
|
|
|
if (NewEntry == nullptr)
|
|
{
|
|
NewEntry = new FGeometryCollectionDynamicData;
|
|
}
|
|
|
|
NewEntry->Reset();
|
|
UsedList.Push(NewEntry);
|
|
|
|
return NewEntry;
|
|
}
|
|
|
|
void FGeometryCollectionDynamicDataPool::Release(FGeometryCollectionDynamicData* DynamicData)
|
|
{
|
|
FScopeLock ScopeLock(&ListLock);
|
|
|
|
int32 UsedIndex = UsedList.Find(DynamicData);
|
|
if (ensure(UsedIndex != INDEX_NONE))
|
|
{
|
|
UsedList.RemoveAt(UsedIndex, 1, false /* no shrinking */);
|
|
FreeList.Push(DynamicData);
|
|
}
|
|
}
|
|
|
|
void FGeometryCollectionTransformBuffer::UpdateDynamicData(const TArray<FMatrix44f>& Transforms, EResourceLockMode LockMode)
|
|
{
|
|
check(NumTransforms == Transforms.Num());
|
|
|
|
void* VertexBufferData = RHILockBuffer(VertexBufferRHI, 0, Transforms.Num() * sizeof(FMatrix44f), LockMode);
|
|
FMemory::Memcpy(VertexBufferData, Transforms.GetData(), Transforms.Num() * sizeof(FMatrix44f));
|
|
RHIUnlockBuffer(VertexBufferRHI);
|
|
}
|