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04ffabc485
FImage is now the standard preferred type for a bag of pixels FImageView can point at pixels without owning an allocation ERawImageFormat (FImage) converts to ETextureSourceFormat FImageUtils provides generic load/save and get/set from FImage major cleanup in the ImageWrappers new preferred API is through ImageWrapperModule Compress/Decompress SetRaw/GetRaw functions cleaned up to not have undefined behavior on unexpected formats ImageWrapper output added for HDR,BMP,TGA RGBA32F format added and supported throughout import/export EditorFactories import/export made more generic, most image types handled the same way using FImage now Deprecate old TSF RGBA order pixel formats Fix many crashes or bad handling of unusual pixel formats Pixel access functions should be used instead of switches on pixel type #preflight 6230ade7e65a7e65d68a187c #rb julien.stjean,martins.mozeiko,dan.thompson,fabian.giesen [CL 19397199 by charles bloom in ue5-main branch]
460 lines
20 KiB
C++
460 lines
20 KiB
C++
// Copyright Epic Games, Inc. All Rights Reserved.
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#include "TextureBuildFunction.h"
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#include "DerivedDataCache.h"
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#include "DerivedDataValueId.h"
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#include "Engine/TextureDefines.h"
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#include "IImageWrapper.h"
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#include "IImageWrapperModule.h"
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#include "ImageCore.h"
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#include "ImageCoreUtils.h"
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#include "Interfaces/ITextureFormat.h"
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#include "Interfaces/ITextureFormatModule.h"
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#include "Memory/CompositeBuffer.h"
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#include "Memory/SharedBuffer.h"
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#include "Modules/ModuleManager.h"
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#include "PixelFormat.h"
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#include "Serialization/CompactBinary.h"
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#include "Serialization/CompactBinaryWriter.h"
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#include "Serialization/FileRegions.h"
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#include "Serialization/MemoryWriter.h"
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#include "TextureCompressorModule.h"
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#include "TextureFormatManager.h"
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DEFINE_LOG_CATEGORY_STATIC(LogTextureBuildFunction, Log, All);
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// Any edits to the texture compressor or this file that will change the output of texture builds
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// MUST have a corresponding change to this version. Individual texture formats have a version to
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// change that is specific to the format. A merge conflict affecting the version MUST be resolved
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// by generating a new version.
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static const FGuid TextureDerivedDataVersion(TEXT("19ffd7ab-ea5c-4a18-b6f4-6b0b5eedd606"));
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#ifndef CASE_ENUM_TO_TEXT
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#define CASE_ENUM_TO_TEXT(txt) case txt: return TEXT(#txt);
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#endif
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static const TCHAR* GetPixelFormatString(EPixelFormat InPixelFormat)
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{
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switch (InPixelFormat)
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{
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FOREACH_ENUM_EPIXELFORMAT(CASE_ENUM_TO_TEXT)
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default:
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return TEXT("PF_Unknown");
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}
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}
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static void ReadCbField(FCbFieldView Field, bool& OutValue) { OutValue = Field.AsBool(OutValue); }
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static void ReadCbField(FCbFieldView Field, int32& OutValue) { OutValue = Field.AsInt32(OutValue); }
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static void ReadCbField(FCbFieldView Field, uint8& OutValue) { OutValue = Field.AsUInt8(OutValue); }
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static void ReadCbField(FCbFieldView Field, uint32& OutValue) { OutValue = Field.AsUInt32(OutValue); }
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static void ReadCbField(FCbFieldView Field, float& OutValue) { OutValue = Field.AsFloat(OutValue); }
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static void ReadCbField(FCbFieldView Field, FName& OutValue)
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{
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if (Field.IsString())
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{
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OutValue = FName(FUTF8ToTCHAR(Field.AsString()));
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}
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}
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static void ReadCbField(FCbFieldView Field, FColor& OutValue)
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{
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FCbFieldViewIterator It = Field.AsArrayView().CreateViewIterator();
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OutValue.A = It++->AsUInt8(OutValue.A);
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OutValue.R = It++->AsUInt8(OutValue.R);
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OutValue.G = It++->AsUInt8(OutValue.G);
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OutValue.B = It++->AsUInt8(OutValue.B);
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}
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static void ReadCbField(FCbFieldView Field, FVector2f& OutValue)
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{
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FCbFieldViewIterator It = Field.AsArrayView().CreateViewIterator();
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OutValue.X = It++->AsFloat(OutValue.X);
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OutValue.Y = It++->AsFloat(OutValue.Y);
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}
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static void ReadCbField(FCbFieldView Field, FVector4f& OutValue)
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{
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FCbFieldViewIterator It = Field.AsArrayView().CreateViewIterator();
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OutValue.X = It++->AsFloat(OutValue.X);
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OutValue.Y = It++->AsFloat(OutValue.Y);
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OutValue.Z = It++->AsFloat(OutValue.Z);
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OutValue.W = It++->AsFloat(OutValue.W);
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}
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static void ReadCbField(FCbFieldView Field, FIntPoint& OutValue)
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{
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FCbFieldViewIterator It = Field.AsArrayView().CreateViewIterator();
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OutValue.X = It++->AsInt32(OutValue.X);
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OutValue.Y = It++->AsInt32(OutValue.Y);
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}
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static FTextureBuildSettings ReadBuildSettingsFromCompactBinary(const FCbObjectView& Object)
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{
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FTextureBuildSettings BuildSettings;
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BuildSettings.FormatConfigOverride = Object["FormatConfigOverride"].AsObjectView();
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FCbObjectView ColorAdjustmentCbObj = Object["ColorAdjustment"].AsObjectView();
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FColorAdjustmentParameters& ColorAdjustment = BuildSettings.ColorAdjustment;
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ReadCbField(ColorAdjustmentCbObj["AdjustBrightness"], ColorAdjustment.AdjustBrightness);
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ReadCbField(ColorAdjustmentCbObj["AdjustBrightnessCurve"], ColorAdjustment.AdjustBrightnessCurve);
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ReadCbField(ColorAdjustmentCbObj["AdjustSaturation"], ColorAdjustment.AdjustSaturation);
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ReadCbField(ColorAdjustmentCbObj["AdjustVibrance"], ColorAdjustment.AdjustVibrance);
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ReadCbField(ColorAdjustmentCbObj["AdjustRGBCurve"], ColorAdjustment.AdjustRGBCurve);
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ReadCbField(ColorAdjustmentCbObj["AdjustHue"], ColorAdjustment.AdjustHue);
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ReadCbField(ColorAdjustmentCbObj["AdjustMinAlpha"], ColorAdjustment.AdjustMinAlpha);
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ReadCbField(ColorAdjustmentCbObj["AdjustMaxAlpha"], ColorAdjustment.AdjustMaxAlpha);
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BuildSettings.bDoScaleMipsForAlphaCoverage = Object["bDoScaleMipsForAlphaCoverage"].AsBool(BuildSettings.bDoScaleMipsForAlphaCoverage);
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ReadCbField(Object["AlphaCoverageThresholds"], BuildSettings.AlphaCoverageThresholds);
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ReadCbField(Object["MipSharpening"], BuildSettings.MipSharpening);
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ReadCbField(Object["DiffuseConvolveMipLevel"], BuildSettings.DiffuseConvolveMipLevel);
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ReadCbField(Object["SharpenMipKernelSize"], BuildSettings.SharpenMipKernelSize);
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ReadCbField(Object["MaxTextureResolution"], BuildSettings.MaxTextureResolution);
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ReadCbField(Object["TextureFormatName"], BuildSettings.TextureFormatName);
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ReadCbField(Object["bHDRSource"], BuildSettings.bHDRSource);
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ReadCbField(Object["MipGenSettings"], BuildSettings.MipGenSettings);
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BuildSettings.bCubemap = Object["bCubemap"].AsBool(BuildSettings.bCubemap);
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BuildSettings.bTextureArray = Object["bTextureArray"].AsBool(BuildSettings.bTextureArray);
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BuildSettings.bVolume = Object["bVolume"].AsBool(BuildSettings.bVolume);
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BuildSettings.bLongLatSource = Object["bLongLatSource"].AsBool(BuildSettings.bLongLatSource);
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BuildSettings.bSRGB = Object["bSRGB"].AsBool(BuildSettings.bSRGB);
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ReadCbField(Object["SourceEncodingOverride"], BuildSettings.SourceEncodingOverride);
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BuildSettings.bHasColorSpaceDefinition = Object["bHasColorSpaceDefinition"].AsBool(BuildSettings.bHasColorSpaceDefinition);
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ReadCbField(Object["RedChromaticityCoordinate"], BuildSettings.RedChromaticityCoordinate);
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ReadCbField(Object["GreenChromaticityCoordinate"], BuildSettings.GreenChromaticityCoordinate);
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ReadCbField(Object["BlueChromaticityCoordinate"], BuildSettings.BlueChromaticityCoordinate);
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ReadCbField(Object["WhiteChromaticityCoordinate"], BuildSettings.WhiteChromaticityCoordinate);
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ReadCbField(Object["ChromaticAdaptationMethod"], BuildSettings.ChromaticAdaptationMethod);
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BuildSettings.bUseLegacyGamma = Object["bUseLegacyGamma"].AsBool(BuildSettings.bUseLegacyGamma);
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BuildSettings.bPreserveBorder = Object["bPreserveBorder"].AsBool(BuildSettings.bPreserveBorder);
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BuildSettings.bForceNoAlphaChannel = Object["bForceNoAlphaChannel"].AsBool(BuildSettings.bForceNoAlphaChannel);
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BuildSettings.bForceAlphaChannel = Object["bForceAlphaChannel"].AsBool(BuildSettings.bForceAlphaChannel);
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BuildSettings.bComputeBokehAlpha = Object["bComputeBokehAlpha"].AsBool(BuildSettings.bComputeBokehAlpha);
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BuildSettings.bReplicateRed = Object["bReplicateRed"].AsBool(BuildSettings.bReplicateRed);
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BuildSettings.bReplicateAlpha = Object["bReplicateAlpha"].AsBool(BuildSettings.bReplicateAlpha);
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BuildSettings.bDownsampleWithAverage = Object["bDownsampleWithAverage"].AsBool(BuildSettings.bDownsampleWithAverage);
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BuildSettings.bSharpenWithoutColorShift = Object["bSharpenWithoutColorShift"].AsBool(BuildSettings.bSharpenWithoutColorShift);
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BuildSettings.bBorderColorBlack = Object["bBorderColorBlack"].AsBool(BuildSettings.bBorderColorBlack);
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BuildSettings.bFlipGreenChannel = Object["bFlipGreenChannel"].AsBool(BuildSettings.bFlipGreenChannel);
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BuildSettings.bApplyYCoCgBlockScale = Object["bApplyYCoCgBlockScale"].AsBool(BuildSettings.bApplyYCoCgBlockScale);
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BuildSettings.bApplyKernelToTopMip = Object["bApplyKernelToTopMip"].AsBool(BuildSettings.bApplyKernelToTopMip);
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BuildSettings.bRenormalizeTopMip = Object["bRenormalizeTopMip"].AsBool(BuildSettings.bRenormalizeTopMip);
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ReadCbField(Object["CompositeTextureMode"], BuildSettings.CompositeTextureMode);
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ReadCbField(Object["CompositePower"], BuildSettings.CompositePower);
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ReadCbField(Object["LODBias"], BuildSettings.LODBias);
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ReadCbField(Object["LODBiasWithCinematicMips"], BuildSettings.LODBiasWithCinematicMips);
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ReadCbField(Object["TopMipSize"], BuildSettings.TopMipSize);
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ReadCbField(Object["VolumeSizeZ"], BuildSettings.VolumeSizeZ);
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ReadCbField(Object["ArraySlices"], BuildSettings.ArraySlices);
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BuildSettings.bStreamable = Object["bStreamable"].AsBool(BuildSettings.bStreamable);
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BuildSettings.bVirtualStreamable = Object["bVirtualStreamable"].AsBool(BuildSettings.bVirtualStreamable);
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BuildSettings.bChromaKeyTexture = Object["bChromaKeyTexture"].AsBool(BuildSettings.bChromaKeyTexture);
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ReadCbField(Object["PowerOfTwoMode"], BuildSettings.PowerOfTwoMode);
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ReadCbField(Object["PaddingColor"], BuildSettings.PaddingColor);
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ReadCbField(Object["ChromaKeyColor"], BuildSettings.ChromaKeyColor);
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ReadCbField(Object["ChromaKeyThreshold"], BuildSettings.ChromaKeyThreshold);
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ReadCbField(Object["CompressionQuality"], BuildSettings.CompressionQuality);
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ReadCbField(Object["LossyCompressionAmount"], BuildSettings.LossyCompressionAmount);
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ReadCbField(Object["Downscale"], BuildSettings.Downscale);
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ReadCbField(Object["DownscaleOptions"], BuildSettings.DownscaleOptions);
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ReadCbField(Object["VirtualAddressingModeX"], BuildSettings.VirtualAddressingModeX);
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ReadCbField(Object["VirtualAddressingModeY"], BuildSettings.VirtualAddressingModeY);
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ReadCbField(Object["VirtualTextureTileSize"], BuildSettings.VirtualTextureTileSize);
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ReadCbField(Object["VirtualTextureBorderSize"], BuildSettings.VirtualTextureBorderSize);
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BuildSettings.OodleEncodeEffort = Object["OodleEncodeEffort"].AsUInt8(BuildSettings.OodleEncodeEffort);
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BuildSettings.OodleUniversalTiling = Object["OodleUniversalTiling"].AsUInt8(BuildSettings.OodleUniversalTiling);
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BuildSettings.bOodleUsesRDO = Object["bOodleUsesRDO"].AsBool(BuildSettings.bOodleUsesRDO);
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BuildSettings.OodleRDO = Object["OodleRDO"].AsUInt8(BuildSettings.OodleRDO);
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ReadCbField(Object["OodleTextureSdkVersion"], BuildSettings.OodleTextureSdkVersion);
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return BuildSettings;
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}
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static void ReadOutputSettingsFromCompactBinary(const FCbObjectView& Object, int32& NumInlineMips)
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{
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NumInlineMips = Object["NumInlineMips"].AsInt32();
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}
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static ERawImageFormat::Type ComputeRawImageFormat(ETextureSourceFormat SourceFormat)
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{
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return FImageCoreUtils::ConvertToRawImageFormat(SourceFormat);
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}
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static bool TryReadTextureSourceFromCompactBinary(FCbFieldView Source, UE::DerivedData::FBuildContext& Context, TArray<FImage>& OutMips)
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{
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FSharedBuffer InputBuffer = Context.FindInput(Source.GetName());
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if (!InputBuffer)
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{
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UE_LOG(LogTextureBuildFunction, Error, TEXT("Missing input '%s'."), *WriteToString<64>(Source.GetName()));
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return false;
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}
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if ( InputBuffer.GetSize() == 0 )
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{
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UE_LOG(LogTextureBuildFunction, Error, TEXT("Input size zero '%s'."), *WriteToString<64>(Source.GetName()));
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return false;
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}
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ETextureSourceCompressionFormat CompressionFormat = (ETextureSourceCompressionFormat)Source["CompressionFormat"].AsUInt8();
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ETextureSourceFormat SourceFormat = (ETextureSourceFormat)Source["SourceFormat"].AsUInt8();
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ERawImageFormat::Type RawImageFormat = ComputeRawImageFormat(SourceFormat);
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EGammaSpace GammaSpace = (EGammaSpace)Source["GammaSpace"].AsUInt8();
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int32 NumSlices = Source["NumSlices"].AsInt32();
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int32 SizeX = Source["SizeX"].AsInt32();
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int32 SizeY = Source["SizeY"].AsInt32();
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int32 MipSizeX = SizeX;
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int32 MipSizeY = SizeY;
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const uint8* DecompressedSourceData = (const uint8*)InputBuffer.GetData();
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TArray64<uint8> IntermediateDecompressedData;
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if (CompressionFormat != TSCF_None)
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{
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switch (CompressionFormat)
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{
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case TSCF_JPEG:
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{
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TSharedPtr<IImageWrapper> ImageWrapper = FModuleManager::GetModuleChecked<IImageWrapperModule>(FName("ImageWrapper")).CreateImageWrapper(EImageFormat::JPEG);
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ImageWrapper->SetCompressed((const uint8*)InputBuffer.GetData(), InputBuffer.GetSize());
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ImageWrapper->GetRaw(SourceFormat == TSF_G8 ? ERGBFormat::Gray : ERGBFormat::BGRA, 8, IntermediateDecompressedData);
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}
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break;
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case TSCF_PNG:
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{
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TSharedPtr<IImageWrapper> ImageWrapper = FModuleManager::GetModuleChecked<IImageWrapperModule>(FName("ImageWrapper")).CreateImageWrapper(EImageFormat::PNG);
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ImageWrapper->SetCompressed((const uint8*)InputBuffer.GetData(), InputBuffer.GetSize());
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ERGBFormat RawFormat = (SourceFormat == TSF_G8 || SourceFormat == TSF_G16) ? ERGBFormat::Gray : ERGBFormat::RGBA;
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ImageWrapper->GetRaw(RawFormat, (SourceFormat == TSF_G16 || SourceFormat == TSF_RGBA16) ? 16 : 8, IntermediateDecompressedData);
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}
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break;
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default:
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UE_LOG(LogTextureBuildFunction, Error, TEXT("Unexpected source compression format encountered while attempting to build a texture."));
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return false;
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}
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DecompressedSourceData = IntermediateDecompressedData.GetData();
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InputBuffer.Reset();
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}
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FCbArrayView MipsCbArrayView = Source["Mips"].AsArrayView();
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OutMips.Reserve(MipsCbArrayView.Num());
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for (FCbFieldView MipsCbArrayIt : MipsCbArrayView)
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{
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FCbObjectView MipCbObjectView = MipsCbArrayIt.AsObjectView();
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int64 MipOffset = MipCbObjectView["Offset"].AsInt64();
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int64 MipSize = MipCbObjectView["Size"].AsInt64();
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FImage* SourceMip = new(OutMips) FImage(
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MipSizeX, MipSizeY,
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NumSlices,
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RawImageFormat,
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GammaSpace
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);
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if ((MipsCbArrayView.Num() == 1) && (CompressionFormat != TSCF_None))
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{
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// In the case where there is only one mip and its already in a TArray, there is no need to allocate new array contents, just use a move instead
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SourceMip->RawData = MoveTemp(IntermediateDecompressedData);
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}
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else
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{
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SourceMip->RawData.Reset(MipSize);
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SourceMip->RawData.AddUninitialized(MipSize);
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FMemory::Memcpy(
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SourceMip->RawData.GetData(),
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DecompressedSourceData + MipOffset,
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MipSize
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);
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}
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MipSizeX = FMath::Max(MipSizeX / 2, 1);
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MipSizeY = FMath::Max(MipSizeY / 2, 1);
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}
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return true;
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}
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// Estimate peak memory usage required to cook this texture, excluding raw input / source data
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// Similar to UTexture::GetBuildRequiredMemory()
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// This is a rough blackbox estimate that can be improved
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static uint64 EstimateTextureBuildMemoryUsage(const FCbObject& Settings)
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{
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uint64 InputSize = 0;
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for (FCbField Mip : Settings["Source"]["Mips"])
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{
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InputSize += Mip["Size"].AsInt64();
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}
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return static_cast<uint64>(InputSize * 7.5);
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}
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FGuid FTextureBuildFunction::GetVersion() const
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{
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UE::DerivedData::FBuildVersionBuilder Builder;
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Builder << TextureDerivedDataVersion;
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ITextureFormat* TextureFormat = nullptr;
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GetVersion(Builder, TextureFormat);
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if (TextureFormat)
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{
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TArray<FName> SupportedFormats;
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TextureFormat->GetSupportedFormats(SupportedFormats);
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TArray<uint16> SupportedFormatVersions;
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for (const FName& SupportedFormat : SupportedFormats)
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{
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SupportedFormatVersions.AddUnique(TextureFormat->GetVersion(SupportedFormat));
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}
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SupportedFormatVersions.Sort();
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Builder << SupportedFormatVersions;
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}
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return Builder.Build();
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}
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void FTextureBuildFunction::Configure(UE::DerivedData::FBuildConfigContext& Context) const
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{
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Context.SetCacheBucket(UE::DerivedData::FCacheBucket("Texture"_ASV));
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Context.SetRequiredMemory(EstimateTextureBuildMemoryUsage(Context.FindConstant(UTF8TEXTVIEW("Settings"))));
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}
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void FTextureBuildFunction::Build(UE::DerivedData::FBuildContext& Context) const
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{
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const FCbObject Settings = Context.FindConstant(UTF8TEXTVIEW("Settings"));
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if (!Settings)
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{
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UE_LOG(LogTextureBuildFunction, Error, TEXT("Settings are not available."));
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return;
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}
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const FTextureBuildSettings BuildSettings = ReadBuildSettingsFromCompactBinary(Settings["Build"].AsObjectView());
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const uint16 RequiredTextureFormatVersion = Settings["FormatVersion"].AsUInt16();
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if (ITextureFormatManagerModule* TFM = GetTextureFormatManager())
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{
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const ITextureFormat* TextureFormat = TFM->FindTextureFormat(BuildSettings.TextureFormatName);
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const uint16 CurrentTextureFormatVersion = TextureFormat ? TextureFormat->GetVersion(BuildSettings.TextureFormatName, &BuildSettings) : 0;
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if (CurrentTextureFormatVersion != RequiredTextureFormatVersion)
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{
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UE_LOG(LogTextureBuildFunction, Error, TEXT("%s has version %hu when version %hu is required."),
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*BuildSettings.TextureFormatName.ToString(), CurrentTextureFormatVersion, RequiredTextureFormatVersion);;
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return;
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}
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}
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int32 NumInlineMips;
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ReadOutputSettingsFromCompactBinary(Settings["Output"].AsObjectView(), NumInlineMips);
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TArray<FImage> SourceMips;
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if (!TryReadTextureSourceFromCompactBinary(Settings["Source"], Context, SourceMips))
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{
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return;
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}
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TArray<FImage> AssociatedNormalSourceMips;
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if (FCbFieldView CompositeSource = Settings["CompositeSource"];
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CompositeSource && !TryReadTextureSourceFromCompactBinary(CompositeSource, Context, AssociatedNormalSourceMips))
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{
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return;
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}
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UE_LOG(LogTextureBuildFunction, Display, TEXT("Compressing %d source mip(s) (%dx%d) to %s..."), SourceMips.Num(), SourceMips[0].SizeX, SourceMips[0].SizeY, *BuildSettings.TextureFormatName.ToString());
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TArray<FCompressedImage2D> CompressedMips;
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uint32 NumMipsInTail;
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uint32 ExtData;
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bool bBuildSucceeded = FModuleManager::GetModuleChecked<ITextureCompressorModule>(TEXTURE_COMPRESSOR_MODULENAME).BuildTexture(
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SourceMips,
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AssociatedNormalSourceMips,
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BuildSettings,
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Context.GetName(),
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CompressedMips,
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NumMipsInTail,
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ExtData);
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if (!bBuildSucceeded)
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{
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return;
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}
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check(CompressedMips.Num() > 0);
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int32 MipCount = CompressedMips.Num();
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const bool bForceAllMipsToBeInlined = BuildSettings.bCubemap || (BuildSettings.bVolume && !BuildSettings.bStreamable) || (BuildSettings.bTextureArray && !BuildSettings.bStreamable);
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const int32 FirstInlineMip = bForceAllMipsToBeInlined ? 0 : FMath::Max(0, MipCount - FMath::Max(NumInlineMips, (int32)NumMipsInTail));
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{
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FCbWriter DescriptionWriter;
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DescriptionWriter.BeginObject();
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|
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DescriptionWriter.BeginArray("Size"_ASV);
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DescriptionWriter.AddInteger(CompressedMips[0].SizeX);
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DescriptionWriter.AddInteger(CompressedMips[0].SizeY);
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const int32 NumSlices = (BuildSettings.bVolume || BuildSettings.bTextureArray) ? CompressedMips[0].SizeZ : BuildSettings.bCubemap ? 6 : 1;
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DescriptionWriter.AddInteger(NumSlices);
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DescriptionWriter.EndArray();
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DescriptionWriter.AddString("PixelFormat"_ASV, GetPixelFormatString((EPixelFormat)CompressedMips[0].PixelFormat));
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DescriptionWriter.AddBool("bCubeMap"_ASV, BuildSettings.bCubemap);
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DescriptionWriter.AddInteger("ExtData"_ASV, ExtData);
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DescriptionWriter.AddInteger("NumMips"_ASV, MipCount);
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DescriptionWriter.AddInteger("NumStreamingMips"_ASV, FirstInlineMip);
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DescriptionWriter.AddInteger("NumMipsInTail"_ASV, NumMipsInTail);
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|
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DescriptionWriter.BeginArray("Mips"_ASV);
|
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int64 MipOffset = 0;
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for (int32 MipIndex = 0; MipIndex < MipCount; ++MipIndex)
|
|
{
|
|
FCompressedImage2D& CompressedMip = CompressedMips[MipIndex];
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|
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DescriptionWriter.BeginObject();
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|
|
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DescriptionWriter.BeginArray("Size"_ASV);
|
|
DescriptionWriter.AddInteger(CompressedMip.SizeX);
|
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DescriptionWriter.AddInteger(CompressedMip.SizeY);
|
|
DescriptionWriter.AddInteger(CompressedMip.SizeZ);
|
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DescriptionWriter.EndArray();
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|
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const bool bIsInlineMip = MipIndex >= FirstInlineMip;
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|
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EFileRegionType FileRegion = FFileRegion::SelectType(EPixelFormat(CompressedMip.PixelFormat));
|
|
DescriptionWriter.AddInteger("FileRegion"_ASV, static_cast<int32>(FileRegion));
|
|
if (bIsInlineMip)
|
|
{
|
|
DescriptionWriter.AddInteger("MipOffset"_ASV, MipOffset);
|
|
}
|
|
DescriptionWriter.AddInteger("NumBytes"_ASV, CompressedMip.RawData.Num());
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|
|
DescriptionWriter.EndObject();
|
|
|
|
if (bIsInlineMip)
|
|
{
|
|
MipOffset += CompressedMip.RawData.Num();
|
|
}
|
|
}
|
|
DescriptionWriter.EndArray();
|
|
|
|
DescriptionWriter.EndObject();
|
|
FCbObject DescriptionObject = DescriptionWriter.Save().AsObject();
|
|
Context.AddValue(UE::DerivedData::FValueId::FromName("Description"_ASV), DescriptionObject);
|
|
}
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|
|
// Streaming mips
|
|
for (int32 MipIndex = 0; MipIndex < FirstInlineMip; ++MipIndex)
|
|
{
|
|
TAnsiStringBuilder<16> MipName;
|
|
MipName << "Mip"_ASV << MipIndex;
|
|
|
|
FSharedBuffer MipData = MakeSharedBufferFromArray(MoveTemp(CompressedMips[MipIndex].RawData));
|
|
Context.AddValue(UE::DerivedData::FValueId::FromName(MipName), MipData);
|
|
}
|
|
|
|
// Mip tail
|
|
TArray<FSharedBuffer> MipTailComponents;
|
|
for (int32 MipIndex = FirstInlineMip; MipIndex < MipCount; ++MipIndex)
|
|
{
|
|
FSharedBuffer MipData = MakeSharedBufferFromArray(MoveTemp(CompressedMips[MipIndex].RawData));
|
|
MipTailComponents.Add(MipData);
|
|
}
|
|
FCompositeBuffer MipTail(MipTailComponents);
|
|
if (MipTail.GetSize() > 0)
|
|
{
|
|
Context.AddValue(UE::DerivedData::FValueId::FromName("MipTail"_ASV), MipTail);
|
|
}
|
|
}
|