MovieSceneMaterialParameterSystem.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "EntitySystem/MovieSceneEntitySystem.h"
#include "EntitySystem/MovieSceneEntityInstantiatorSystem.h"
#include "EntitySystem/MovieSceneOverlappingEntityTracker.h"
#include "Evaluation/PreAnimatedState/MovieScenePreAnimatedStateStorage.h"
#include "Materials/MaterialParameters.h"
 
#include "MovieSceneMaterialParameterSystem.generated.h"
 
class UMovieSceneBlenderSystem;
class UMovieScenePiecewiseDoubleBlenderSystem;
 
namespace UE::MovieScene
{
 
struct FPreAnimatedScalarMaterialParameterStorage;
struct FPreAnimatedVectorMaterialParameterStorage;
 
struct FAnimatedMaterialParameterInfo
{
    TWeakObjectPtr<UMovieSceneEntitySystemLinker> WeakLinker;
    TWeakObjectPtr<UMovieSceneBlenderSystem> WeakBlenderSystem;
    int32 NumContributors = 0;
    FMovieSceneEntityID OutputEntityID;
    FMovieSceneBlendChannelID BlendChannelID;
 
    ~FAnimatedMaterialParameterInfo();
};
 
MOVIESCENETRACKS_API void CollectGarbageForOutput(FAnimatedMaterialParameterInfo* Output);
 
} // namespace UE::MovieScene
 
 
UCLASS(MinimalAPI)
class UMovieSceneMaterialParameterInstantiatorSystem : public UMovieSceneEntityInstantiatorSystem
{
public:
 
    GENERATED_BODY()
 
    UMovieSceneMaterialParameterInstantiatorSystem(const FObjectInitializer& ObjInit);
 
private:
 
    virtual void OnLink() override;
    virtual void OnUnlink() override;
    virtual void OnRun(FSystemTaskPrerequisites& InPrerequisites, FSystemSubsequentTasks& Subsequents) override;
 
private:
 
    UE::MovieScene::TOverlappingEntityTracker<UE::MovieScene::FAnimatedMaterialParameterInfo, UE::MovieScene::FObjectComponent, FMaterialParameterInfo> ScalarParameterTracker;
    UE::MovieScene::TOverlappingEntityTracker<UE::MovieScene::FAnimatedMaterialParameterInfo, UE::MovieScene::FObjectComponent, FMaterialParameterInfo> VectorParameterTracker;
 
    TSharedPtr<UE::MovieScene::FPreAnimatedScalarMaterialParameterStorage> ScalarParameterStorage;
    TSharedPtr<UE::MovieScene::FPreAnimatedVectorMaterialParameterStorage> VectorParameterStorage;
 
public:
 
    UPROPERTY()
    TObjectPtr<UMovieScenePiecewiseDoubleBlenderSystem> DoubleBlenderSystem;
};
 
 
UCLASS(MinimalAPI)
class UMovieSceneMaterialParameterEvaluationSystem : public UMovieSceneEntitySystem
{
public:
 
    GENERATED_BODY()
 
    UMovieSceneMaterialParameterEvaluationSystem(const FObjectInitializer& ObjInit);
 
private:
 
    virtual void OnSchedulePersistentTasks(UE::MovieScene::IEntitySystemScheduler* TaskScheduler) override;
    virtual void OnRun(FSystemTaskPrerequisites& InPrerequisites, FSystemSubsequentTasks& Subsequents) override;
};