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fc82d1469a
causing it to under-estimate memory use in some cases move GetPowerOfTwoTargetTextureSize to TextureBuildUtilities so it can be shared fix some comments #rb Dan.Thompson, fabian.giesen [CL 30947565 by charles bloom in 5.4 branch]
91 lines
3.7 KiB
C++
91 lines
3.7 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 "ImageCore.h"
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#include "Interfaces/ITextureFormat.h"
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#include "Engine/TextureDefines.h"
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struct FTextureBuildSettings;
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/***
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TextureBuildUtilities is a utility module for shared code that Engine and TextureBuildWorker (no Engine) can both see
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for Texture-related functions that don't need Texture.h/UTexture
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TextureBuildUtilities is hard-linked to the Engine so no LoadModule/ModuleInterface is needed
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***/
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namespace UE
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{
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namespace TextureBuildUtilities
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{
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enum
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{
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// The width and height of the placeholder gpu texture we create when the texture is cpu accessible.
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PLACEHOLDER_TEXTURE_SIZE = 4
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};
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namespace EncodedTextureExtendedData
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{
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TEXTUREBUILDUTILITIES_API FCbObject ToCompactBinary(const FEncodedTextureExtendedData& InExtendedData);
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TEXTUREBUILDUTILITIES_API bool FromCompactBinary(FEncodedTextureExtendedData& OutExtendedData, FCbObject InCbObject);
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}
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namespace EncodedTextureDescription
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{
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TEXTUREBUILDUTILITIES_API FCbObject ToCompactBinary(const FEncodedTextureDescription& InDescription);
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TEXTUREBUILDUTILITIES_API bool FromCompactBinary(FEncodedTextureDescription& OutDescription, FCbObject InCbObject);
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}
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namespace TextureEngineParameters
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{
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TEXTUREBUILDUTILITIES_API FCbObject ToCompactBinaryWithDefaults(const FTextureEngineParameters& InEngineParameters);
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TEXTUREBUILDUTILITIES_API bool FromCompactBinary(FTextureEngineParameters& OutEngineParameters, FCbObject InCbObject);
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}
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// Carries information out of the build that we don't want to cook or save off in the runtime
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struct TEXTUREBUILDUTILITIES_API FTextureBuildMetadata
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{
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// Digests of the data at various processing stages so we can track down determinism issues
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// that arise. Currently just the hash from before we pass to the encoders.
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uint64 PreEncodeMipsHash = 0;
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FCbObject ToCompactBinaryWithDefaults() const;
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FTextureBuildMetadata(FCbObject InCbObject);
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FTextureBuildMetadata() = default;
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};
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TEXTUREBUILDUTILITIES_API bool TextureFormatIsHdr(FName const& InName);
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// Removes platform and other custom prefixes from the name.
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// Returns plain format name and the non-platform prefix (with trailing underscore).
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// i.e. PLAT_BLAH_AutoDXT returns AutoDXT and writes BLAH_ to OutPrefix.
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TEXTUREBUILDUTILITIES_API const FName TextureFormatRemovePrefixFromName(FName const& InName, FName& OutPrefix);
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// removes platform prefix but leaves other custom prefixes :
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TEXTUREBUILDUTILITIES_API const FName TextureFormatRemovePlatformPrefixFromName(FName const& InName);
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FORCEINLINE const FName TextureFormatRemovePrefixFromName(FName const& InName)
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{
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FName OutPrefix;
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return TextureFormatRemovePrefixFromName(InName,OutPrefix);
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}
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// Get the format to use for output of the VT Intermediate stage, cutting into tiles and processing
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// the next step will then encode from this format to the desired output format
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TEXTUREBUILDUTILITIES_API ERawImageFormat::Type GetVirtualTextureBuildIntermediateFormat(const FTextureBuildSettings& BuildSettings);
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TEXTUREBUILDUTILITIES_API void GetPlaceholderTextureImageInfo(FImageInfo* OutImageInfo);
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TEXTUREBUILDUTILITIES_API void GetPlaceholderTextureImage(FImage* OutImage);
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// Returns true if the target texture size is different and padding/stretching is required.
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// if InPow2Setting == None, the Out sizes match the In sizes, and false is returned
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TEXTUREBUILDUTILITIES_API bool GetPowerOfTwoTargetTextureSize(int32 InMip0SizeX, int32 InMip0SizeY, int32 InMip0NumSlices, bool bInIsVolume, ETexturePowerOfTwoSetting::Type InPow2Setting, int32 InResizeDuringBuildX, int32 InResizeDuringBuildY, int32& OutTargetSizeX, int32& OutTargetSizeY, int32& OutTargetSizeZ);
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} // namespace TextureBuildUtilities
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} // namespace UE
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