Public Types
enum	{ NearNeighborRadius = 4 }

Public Member Functions
	TPNGDataFill (int32 SizeX, int32 SizeY, uint8 *SourceTextureData)

void	ProcessData (bool bDoOnComplexAlphaNotJustBinaryTransparency)

bool	ProcessHorizontalRow (int64 Y)

void	FillRowColorPixels (int64 FillColorRow, int64 Y)

ColorDataType	GetFilledFromNearNeighbors (int64 CenterX, int64 CenterY) const

void	FillFromNearNeighbors ()

Static Public Member Functions
static bool	IsOpaque (const ColorDataType InColor)

static ColorDataType	MakeColorWithZeroAlpha (const ColorDataType InColor)

static ColorDataType	MakeColorOpaque (const ColorDataType InColor)

static FLinearColor	MakeLinearColor (const ColorDataType InColor)

static ColorDataType	MakeColorFromLinear (const FLinearColor InColor)

Public Attributes
PixelDataType *	SourceData

int64	TextureWidth

int64	TextureHeight

ColorDataType	WhiteWithZeroAlpha

float	NearNeighborWeights [NearNeighborRadius+1][NearNeighborRadius+1]

Detailed Description

template<typename PixelDataType, typename ColorDataType, int32 RIdx, int32 GIdx, int32 BIdx, int32 AIdx>
class UE::TextureUtilitiesCommon::TPNGDataFill< PixelDataType, ColorDataType, RIdx, GIdx, BIdx, AIdx >

This fills any pixels of a texture with have an alpha value of zero and RGB=white, with an RGB from the nearest neighboring pixel which has non-zero alpha.

PNG images with "simple transparency" (eg. indexed color transparency) don't store RGB color in the transparent area libpng decodes those pels are {RGB=white, A=0} we replace them by filling in the RGB from neighbors

note that this does NOT fill in the RGB of PNGs with a full alpha channel. -> it does now, if PNGInfill == Always

Member Enumeration Documentation

◆ anonymous enum

template<typename PixelDataType , typename ColorDataType , int32 RIdx, int32 GIdx, int32 BIdx, int32 AIdx>

anonymous enum

Enumerator
NearNeighborRadius

Constructor & Destructor Documentation

◆ TPNGDataFill()

template<typename PixelDataType , typename ColorDataType , int32 RIdx, int32 GIdx, int32 BIdx, int32 AIdx>

UE::TextureUtilitiesCommon::TPNGDataFill< PixelDataType, ColorDataType, RIdx, GIdx, BIdx, AIdx >::TPNGDataFill	(	int32	SizeX,
		int32	SizeY,
		uint8 *	SourceTextureData
	)

inlineexplicit

Member Function Documentation

◆ FillFromNearNeighbors()

template<typename PixelDataType , typename ColorDataType , int32 RIdx, int32 GIdx, int32 BIdx, int32 AIdx>

void UE::TextureUtilitiesCommon::TPNGDataFill< PixelDataType, ColorDataType, RIdx, GIdx, BIdx, AIdx >::FillFromNearNeighbors ( )

inline

◆ FillRowColorPixels()

template<typename PixelDataType , typename ColorDataType , int32 RIdx, int32 GIdx, int32 BIdx, int32 AIdx>

void UE::TextureUtilitiesCommon::TPNGDataFill< PixelDataType, ColorDataType, RIdx, GIdx, BIdx, AIdx >::FillRowColorPixels	(	int64	FillColorRow,
		int64	Y
	)

inline

◆ GetFilledFromNearNeighbors()

template<typename PixelDataType , typename ColorDataType , int32 RIdx, int32 GIdx, int32 BIdx, int32 AIdx>

ColorDataType UE::TextureUtilitiesCommon::TPNGDataFill< PixelDataType, ColorDataType, RIdx, GIdx, BIdx, AIdx >::GetFilledFromNearNeighbors	(	int64	CenterX,
		int64	CenterY
	)		const

inline

◆ IsOpaque()

template<typename PixelDataType , typename ColorDataType , int32 RIdx, int32 GIdx, int32 BIdx, int32 AIdx>

static bool UE::TextureUtilitiesCommon::TPNGDataFill< PixelDataType, ColorDataType, RIdx, GIdx, BIdx, AIdx >::IsOpaque ( const ColorDataType InColor )

inlinestatic

◆ MakeColorFromLinear()

template<typename PixelDataType , typename ColorDataType , int32 RIdx, int32 GIdx, int32 BIdx, int32 AIdx>

static ColorDataType UE::TextureUtilitiesCommon::TPNGDataFill< PixelDataType, ColorDataType, RIdx, GIdx, BIdx, AIdx >::MakeColorFromLinear ( const FLinearColor InColor )

inlinestatic

◆ MakeColorOpaque()

template<typename PixelDataType , typename ColorDataType , int32 RIdx, int32 GIdx, int32 BIdx, int32 AIdx>

static ColorDataType UE::TextureUtilitiesCommon::TPNGDataFill< PixelDataType, ColorDataType, RIdx, GIdx, BIdx, AIdx >::MakeColorOpaque ( const ColorDataType InColor )

inlinestatic

◆ MakeColorWithZeroAlpha()

template<typename PixelDataType , typename ColorDataType , int32 RIdx, int32 GIdx, int32 BIdx, int32 AIdx>

static ColorDataType UE::TextureUtilitiesCommon::TPNGDataFill< PixelDataType, ColorDataType, RIdx, GIdx, BIdx, AIdx >::MakeColorWithZeroAlpha ( const ColorDataType InColor )

inlinestatic

◆ MakeLinearColor()

template<typename PixelDataType , typename ColorDataType , int32 RIdx, int32 GIdx, int32 BIdx, int32 AIdx>

static FLinearColor UE::TextureUtilitiesCommon::TPNGDataFill< PixelDataType, ColorDataType, RIdx, GIdx, BIdx, AIdx >::MakeLinearColor ( const ColorDataType InColor )

inlinestatic

◆ ProcessData()

template<typename PixelDataType , typename ColorDataType , int32 RIdx, int32 GIdx, int32 BIdx, int32 AIdx>

void UE::TextureUtilitiesCommon::TPNGDataFill< PixelDataType, ColorDataType, RIdx, GIdx, BIdx, AIdx >::ProcessData ( bool bDoOnComplexAlphaNotJustBinaryTransparency )