RendererUtils.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "CoreMinimal.h"
#include "Containers/ArrayView.h"
#include "GlobalShader.h"
#include "HAL/Platform.h"
#include "RHIDefinitions.h"
#include "RenderGraph.h"
#include "RenderGraphDefinitions.h"
#include "ShaderParameterMacros.h"
#include "RenderGraphFwd.h"
 
struct FSubstrateSceneData;
class FScene;
class FGlobalShaderMap;
class FRDGBuilder;
class FRHICommandListImmediate;
class FScene;
struct IPooledRenderTarget;
template <typename ReferencedType> class TRefCountPtr;
 
class FRenderTargetWriteMask
{
public:
    static RENDERER_API void Decode(
        FRHICommandListImmediate& RHICmdList,
        FGlobalShaderMap* ShaderMap,
        TArrayView<IPooledRenderTarget* const> InRenderTargets,
        TRefCountPtr<IPooledRenderTarget>& OutRTWriteMask,
        ETextureCreateFlags RTWriteMaskFastVRamConfig,
        const TCHAR* RTWriteMaskDebugName);
 
    static RENDERER_API void Decode(
        FRDGBuilder& GraphBuilder,
        FGlobalShaderMap* ShaderMap,
        TArrayView<FRDGTextureRef const> InRenderTargets,
        FRDGTextureRef& OutRTWriteMask,
        ETextureCreateFlags RTWriteMaskFastVRamConfig,
        const TCHAR* RTWriteMaskDebugName);
};
 
class FDepthBounds
{
public:
 
    struct FDepthBoundsValues
    {
        float MinDepth;
        float MaxDepth;
    };
 
    static RENDERER_API FDepthBoundsValues CalculateNearFarDepthExcludingSky();
};
 
// A minimal uniform struct providing necessary access for external systems to Substrate parameters.
DECLARE_UNIFORM_BUFFER_STRUCT(FSubstratePublicGlobalUniformParameters, RENDERER_API)
 
namespace Substrate
{
    void PreInitViews(FScene& Scene);
    void PostRender(FScene& Scene);
 
    RENDERER_API TRDGUniformBufferRef<FSubstratePublicGlobalUniformParameters> GetPublicGlobalUniformBuffer(FRDGBuilder& GraphBuilder, FScene& Scene);
}
 
// A minimal uniform struct providing necessary access for external systems to Nanite Ray Tracing parameters.
DECLARE_UNIFORM_BUFFER_STRUCT(FNaniteRayTracingUniformParameters, RENDERER_API)
 
namespace Nanite
{
    RENDERER_API TRDGUniformBufferRef<FNaniteRayTracingUniformParameters> GetPublicGlobalRayTracingUniformBuffer();
}