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This persistent atlas hold IES texture in a unique texture array which is used by all systems (raster/RT/PT/Lumen), and unify IES profile rendering. #rb chris.kulla, sebastien.hillaire, krzysztof.narkowicz #jira UE-167618 #preflight 6356fd907261e565c436a0fb [CL 22806455 by Charles deRousiers in ue5-main branch]
52 lines
1.5 KiB
C++
52 lines
1.5 KiB
C++
// Copyright Epic Games, Inc. All Rights Reserved.
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#pragma once
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#include "CoreMinimal.h"
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#include "RHIDefinitions.h"
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#include "RenderGraphDefinitions.h"
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class FRHITexture;
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class UTexture;
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class FViewInfo;
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namespace RectLightAtlas
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{
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// Atlas slot description in terms of UV coordinates
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struct FAtlasSlotDesc
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{
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FVector2f UVOffset;
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FVector2f UVScale;
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float MaxMipLevel;
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};
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// Add a rect light source texture to the atlas
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RENDERER_API uint32 AddTexture(UTexture* Texture);
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// Remove a rect light source texture from the atlas
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RENDERER_API void RemoveTexture(uint32 InSlotId);
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// Return the atlas coordinate for a particular slot
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RENDERER_API FAtlasSlotDesc GetAtlasSlot(uint32 InSlotId);
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// Return the atlas texture
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RENDERER_API FRHITexture* GetAtlasTexture();
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// Update the rect light atlas texture
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RENDERER_API void UpdateAtlasTexture(FRDGBuilder& GraphBuilder, const ERHIFeatureLevel::Type FeatureLevel);
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// Return the rect light atlas debug pass
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RENDERER_API void AddDebugPass(FRDGBuilder& GraphBuilder, const FViewInfo& View, FRDGTextureRef OutputTexture);
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// Scope for invalidating a particular texture
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// This ensures the atlas contains the latest version of the texture and filter it
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struct FAtlasTextureInvalidationScope
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{
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FAtlasTextureInvalidationScope(UTexture* In);
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~FAtlasTextureInvalidationScope();
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FAtlasTextureInvalidationScope(const FAtlasTextureInvalidationScope&) = delete;
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FAtlasTextureInvalidationScope& operator=(const FAtlasTextureInvalidationScope&) = delete;
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UTexture* Texture = nullptr;
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};
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}
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