SceneRendererInterface.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "SceneView.h"
#include "ShaderParameterStructDeclaration.h"
 
class FScene;
class FSceneUniformBuffer;
class FPrimitiveSceneInfo;
struct FPersistentPrimitiveIndex;
 
DECLARE_UNIFORM_BUFFER_STRUCT(FSceneUniformParameters, RENDERER_API)
 
namespace UE::Renderer::Private
{
 
class IShadowInvalidatingInstances
{
public:
    virtual ~IShadowInvalidatingInstances() = default;
 
    virtual void AddPrimitive(const FPrimitiveSceneInfo *PrimitiveSceneInfo) = 0;
 
    virtual void AddInstanceRange(FPersistentPrimitiveIndex PersistentPrimitiveIndex, uint32 InstanceSceneDataOffset, uint32 NumInstanceSceneDataEntries) = 0;
};
 
}
 
class ISceneRenderer
{
public:
    virtual ~ISceneRenderer() = default;
 
    virtual FScene* GetScene() = 0;
    virtual const FSceneUniformBuffer& GetSceneUniforms() const = 0;
    virtual FSceneUniformBuffer& GetSceneUniforms() = 0;
 
    virtual TRDGUniformBufferRef<FSceneUniformParameters> GetSceneUniformBufferRef(FRDGBuilder& GraphBuilder) = 0;
 
    virtual UE::Renderer::Private::IShadowInvalidatingInstances *GetShadowInvalidatingInstancesInterface(const FSceneView *SceneView) { return nullptr; }
};
 
inline TRDGUniformBufferRef<FSceneUniformParameters> GetSceneUniformBufferRef(FRDGBuilder& GraphBuilder, const FSceneView& View)
{
    ISceneRenderer* SceneRender = View.Family ? View.Family->GetSceneRenderer() : nullptr;
    return SceneRender ? SceneRender->GetSceneUniformBufferRef(GraphBuilder) : nullptr;
}