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#rb none #lockdown Nick.Penwarden #ROBOMERGE-OWNER: ryan.gerleve #ROBOMERGE-AUTHOR: ben.marsh #ROBOMERGE-SOURCE: CL 4662404 in //UE4/Main/... #ROBOMERGE-BOT: ENGINE (Main -> Dev-Networking) [CL 4662413 by ben marsh in Dev-Networking branch]
96 lines
2.3 KiB
C++
96 lines
2.3 KiB
C++
// Copyright 1998-2019 Epic Games, Inc. All Rights Reserved.
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#pragma once
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#include "CoreMinimal.h"
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/**
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* Structure for texture format compressor capabilities.
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*/
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struct FTextureFormatCompressorCaps
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{
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FTextureFormatCompressorCaps()
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: MaxTextureDimension(TNumericLimits<uint32>::Max())
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{ }
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uint32 MaxTextureDimension;
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};
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/**
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* Interface for texture compression modules.
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*/
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class ITextureFormat
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{
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public:
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/**
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* Checks whether this texture format can compress in parallel.
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*
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* @return true if parallel compression is supported, false otherwise.
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*/
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virtual bool AllowParallelBuild() const
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{
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return false;
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}
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/**
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* Gets the current version of the specified texture format.
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*
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* @param Format The format to get the version for.
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* @return Version number.
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*/
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virtual uint16 GetVersion(
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FName Format,
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const struct FTextureBuildSettings* BuildSettings = nullptr
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) const = 0;
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/**
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* Gets an optional derived data key string, so that the compressor can
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* rely upon the number of mips, size of texture, etc, when compressing the image
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*
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* @param Texture Reference to the texture we are compressing.
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* @return A string that will be used with the DDC, the string should be in the format "<DATA>_"
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*/
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virtual FString GetDerivedDataKeyString( const class UTexture& Texture ) const
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{
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return TEXT("");
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}
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/**
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* Gets the list of supported formats.
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*
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* @param OutFormats Will hold the list of formats.
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*/
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virtual void GetSupportedFormats( TArray<FName>& OutFormats ) const = 0;
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/**
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* Gets the capabilities of the texture compressor.
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*
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* @param OutCaps Filled with capability properties of texture format compressor.
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*/
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virtual FTextureFormatCompressorCaps GetFormatCapabilities() const = 0;
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/**
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* Compresses a single image.
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*
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* @param Image The input image.
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* @param BuildSettings Build settings.
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* @param bImageHasAlphaChannel true if the image has a non-white alpha channel.
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* @param OutCompressedMip The compressed image.
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* @returns true on success, false otherwise.
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*/
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virtual bool CompressImage(
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const struct FImage& Image,
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const struct FTextureBuildSettings& BuildSettings,
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bool bImageHasAlphaChannel,
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struct FCompressedImage2D& OutCompressedImage
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) const = 0;
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public:
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/** Virtual destructor. */
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virtual ~ITextureFormat() { }
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};
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