GrassInstancedStaticMeshComponent.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "CoreMinimal.h"
#include "Components/HierarchicalInstancedStaticMeshComponent.h"
#include "GrassInstancedStaticMeshComponent.generated.h"
 
UCLASS(ClassGroup = Foliage, MinimalAPI, Hidden)
class UGrassInstancedStaticMeshComponent : public UHierarchicalInstancedStaticMeshComponent
{
    GENERATED_UCLASS_BODY()
 
public:
    static FOLIAGE_API void BuildTreeAnyThread(TArray<FMatrix>& InstanceTransforms, TArray<float>& InstanceCustomDataFloats, int32 NumCustomDataFloats, const FBox& MeshBox, TArray<FClusterNode>& OutClusterTree, TArray<int32>& OutSortedInstances, TArray<int32>& OutInstanceReorderTable, int32& OutOcclusionLayerNum, int32 MaxInstancesPerLeaf, bool InGenerateInstanceScalingRange);
    
    FOLIAGE_API void AcceptPrebuiltTree(TArray<FClusterNode>& InClusterTree, int32 InOcclusionLayerNumNodes, int32 InNumBuiltRenderInstances, FStaticMeshInstanceData* InSharedInstanceBufferData);
 
    FOLIAGE_API bool SupportsWorldPositionOffsetVelocity() const override;
 
    int32 GetNumRenderInstances() const override { return NumBuiltRenderInstances; }
 
private:
    virtual void BuildTree() override final;
    virtual void BuildTreeAsync() override final;
    UE_DEPRECATED(5.7, "Please use BuildComponentInstanceData with EShaderPlatform argument and not ERHIFeatureLevel::Type")
    virtual void BuildComponentInstanceData(ERHIFeatureLevel::Type FeatureLevel, FInstanceUpdateComponentDesc& OutData) override final;
    virtual void BuildComponentInstanceData(EShaderPlatform InShaderPlatform, FInstanceUpdateComponentDesc& OutData) override final;
};