BlockCodingHelpers.cpp File Reference

#include "BlockCodingHelpers.h"
#include "VirtualTextureUploadCache.h"

Classes
struct	DXT1Block
struct	AlphaBlock
struct	BC4Block
struct	DXT5Block
struct	BC5Block
struct	BC6Block
struct	BC7Block
struct	ASTCBlock
struct	FloatPixel
struct	Float16Pixel

Macros
#define	MAKE_565(r, g, b)   (((r>>3) << 11) | ((g>>2) << 5) | (b>>3))
#define	MAKE_8888(r, g, b, a)   ((a << 24) | (b << 16) | (g << 8) | r)
#define	UNORM16(x)   (x << 8) | x
#define	UNORM16_SRGB(x)   (x << 8) | 0x80
#define	NUM_LEVEL_COLORS   14

Functions
DXT1Block	MakeDXT1 (const uint8 *Rgb)
BC4Block	MakeBC4 (const uint8 *R)
DXT5Block	MakeDXT5 (const uint8 *Rgba)
BC5Block	MakeBC5 (const uint8 *Rg)
BC7Block	MakeBC7 (const uint8 *rgb)
ASTCBlock	MakeASTC (const uint8 *rgb, bool sRGB)
uint16_t	Float32ToFloat16 (float value)
Float16Pixel	MakeFloat16 (const uint8 *rgb)
BC6Block	MakeBC6 (const uint8 *rgb)
FloatPixel	MakeFloat (const uint8 *rgb)
uint32	MakeRGBA (const uint8 *Rgba)
uint32	MakeBGRA (const uint8 *Rgba)
template<class PixelType >
void	PatchLine (PixelType *data, const PixelType &value, int items)
template<class PixelType >
void	PatchBlock (PixelType *data, const PixelType &value, int Width, int Height, int Stride)
template<class PixelType >
void	Patch (PixelType *data, PixelType value, int width, int height, int borderWidth, int Stride)
void	BakeDebugInfo (const FVTUploadTileBuffer &TileBuffer, int32 Width, int32 Height, int32 Border, EPixelFormat Format, int32 MipLevel)
bool	UniformColorPixels (const FVTUploadTileBuffer &TileBuffer, int32 Width, int32 Height, EPixelFormat Format, const uint8 *Color)

Variables
unsigned char	MipColors [NUM_LEVEL_COLORS][3]
unsigned char	MipGreys [NUM_LEVEL_COLORS][1]

Macro Definition Documentation

MAKE_565

#define MAKE_565	(		r,
			g,
			b
	)		(((r>>3) << 11) | ((g>>2) << 5) | (b>>3))

MAKE_8888

#define MAKE_8888	(		r,
			g,
			b,
			a
	)		((a << 24) | (b << 16) | (g << 8) | r)

NUM_LEVEL_COLORS

#define NUM_LEVEL_COLORS   14

UNORM16

#define UNORM16

(

x

)

(x << 8) | x

UNORM16_SRGB

#define UNORM16_SRGB

(

x

)

(x << 8) | 0x80

Function Documentation

BakeDebugInfo()

void BakeDebugInfo	(	const FVTUploadTileBuffer &	TileBuffer,
		int32	Width,
		int32	Height,
		int32	Border,
		EPixelFormat	Format,
		int32	MipLevel
	)

Float32ToFloat16()

uint16_t Float32ToFloat16

(

float

value

)

MakeASTC()

ASTCBlock MakeASTC	(	const uint8 *	rgb,
		bool	sRGB
	)

MakeBC4()

BC4Block MakeBC4

(

const uint8 *

R

)

MakeBC5()

BC5Block MakeBC5

(

const uint8 *

Rg

)

MakeBC6()

BC6Block MakeBC6

(

const uint8 *

rgb

)

MakeBC7()

BC7Block MakeBC7

(

const uint8 *

rgb

)

MakeBGRA()

uint32 MakeBGRA

(

const uint8 *

Rgba

)

MakeDXT1()

DXT1Block MakeDXT1

(

const uint8 *

Rgb

)

MakeDXT5()

DXT5Block MakeDXT5

(

const uint8 *

Rgba

)

MakeFloat()

FloatPixel MakeFloat

(

const uint8 *

rgb

)

MakeFloat16()

Float16Pixel MakeFloat16

(

const uint8 *

rgb

)

MakeRGBA()

uint32 MakeRGBA

(

const uint8 *

Rgba

)

Patch()

template<class PixelType >

void Patch	(	PixelType *	data,
		PixelType	value,
		int	width,
		int	height,
		int	borderWidth,
		int	Stride
	)

This patches a borderWidth pixels wide border around the given image to the 'value'

PatchBlock()

template<class PixelType >

void PatchBlock ( PixelType *  data, const PixelType &  value, int  Width, int  Height, int  Stride  )

inline

PatchLine()

template<class PixelType >

void PatchLine ( PixelType *  data, const PixelType &  value, int  items  )

inline

UniformColorPixels()

bool UniformColorPixels	(	const FVTUploadTileBuffer &	TileBuffer,
		int32	Width,
		int32	Height,
		EPixelFormat	Format,
		const uint8 *	Color
	)

Variable Documentation

MipColors

unsigned char MipColors[NUM_LEVEL_COLORS][3]

Initial value:

=
{
    { 255, 255, 255 },
    { 255, 255, 000 },
    { 000, 255, 255 },
    { 000, 255, 000 },
    { 255, 000, 255 },
    { 255, 000, 000 },
    { 000, 000, 255 },
    { 128, 128, 128 },
    { 128, 128, 000 },
    { 000, 128, 128 },
    { 000, 128, 000 },
    { 128, 000, 128 },
    { 128, 000, 000 },
    { 000, 000, 128 }
}

MipGreys

unsigned char MipGreys[NUM_LEVEL_COLORS][1]

Initial value:

=
{
    { 255 }, 
    { 220 },
    { 200 },
    { 180 },
    { 160 },
    { 140 },
    { 120 },
    { 100 },
    { 80 },
    { 60 },
    { 40 },
    { 20 },
    { 10 },
    { 0 }
}