SkinnedMeshStateStreamImpl.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "PrimitiveSceneDesc.h"
#include "SceneTypes.h"
#include "StateStream/SkinnedMeshStateStream.h"
#include "TransformStateStreamImpl.h"
 
#define UE_API RENDERER_API
 
class FSceneInterface;
class FSkeletalMeshObject;
struct FPrimitiveSceneDesc;
 
#define UE_DEBUG_OFFSET_SKINNED_MESH 0 // For debugging purposes
 
 
class FSkinnedMeshObject : public TRefCountingMixin<FSkinnedMeshObject>, public FTransformObjectListener
{
public:
 
private:
    virtual ~FSkinnedMeshObject();
    virtual void OnTransformObjectDirty() override final;
 
    TRefCountPtr<FTransformObject> TransformObject;
    USkinnedAsset* SkinnedAsset;
    FSkeletalMeshObject* MeshObject;
 
    FCustomPrimitiveData CustomPrimitiveData;
    FPrimitiveSceneInfoData PrimitiveSceneData;
    FPrimitiveSceneDesc PrimitiveSceneDesc;
    TArray<FTransform> PrevTransforms;
    uint32 BoneTransformRevisionNumber = 0;
 
    #if UE_DEBUG_OFFSET_SKINNED_MESH
    uint32 DebugIndex = 0;
    #endif
 
    friend class FSkinnedMeshStateStreamImpl;
    friend class TRefCountingMixin<FSkinnedMeshObject>;
};
 
 
 
struct FSkinnedMeshStateStreamSettings : TStateStreamSettings<ISkinnedMeshStateStream, FSkinnedMeshObject>
{
    static inline constexpr bool SkipCreatingDeletes = true;
};
 
 
 
class FSkinnedMeshStateStreamImpl : public TStateStream<FSkinnedMeshStateStreamSettings>
{
public:
    FSkinnedMeshStateStreamImpl(FSceneInterface& InScene);
private:
    void SetTransformObject(FSkinnedMeshObject& Object, const FSkinnedMeshDynamicState& Ds);
    UE_API virtual void Render_OnCreate(const FSkinnedMeshStaticState& Ss, const FSkinnedMeshDynamicState& Ds, FSkinnedMeshObject*& UserData, bool IsDestroyedInSameFrame) override;
    UE_API virtual void Render_OnUpdate(const FSkinnedMeshStaticState& Ss, const FSkinnedMeshDynamicState& Ds, FSkinnedMeshObject*& UserData) override;
    UE_API virtual void Render_OnDestroy(const FSkinnedMeshStaticState& Ss, const FSkinnedMeshDynamicState& Ds, FSkinnedMeshObject*& UserData) override;
 
    FSceneInterface& Scene;
};
 
 
#undef UE_API