dxtn.c File Reference

#include <stdlib.h>
#include <string.h>
#include "types.h"
#include "internal.h"
#include "dxtn.h"

Go to the source code of this file.

Defines
#define	MAX_COMP   4 /* ever needed maximum number of components in texel */
#define	MAX_VECT   4 /* ever needed maximum number of base vectors to find */
#define	N_TEXELS   16 /* number of texels in a block (always 16) */
#define	COLOR565(v)   (word)((((v)[RCOMP] & 0xf8) << 8) | (((v)[GCOMP] & 0xfc) << 3) | ((v)[BCOMP] >> 3))
#define	ENCODER(dxtn, n)
#define	CC_SEL(cc, which)   (((dword *)(cc))[(which) / 32] >> ((which) & 31))
#define	UP4(c)   _rgb_scale_4[(c) & 15]
#define	UP5(c)   _rgb_scale_5[(c) & 31]
#define	UP6(c)   _rgb_scale_6[(c) & 63]
#define	ZERO_4UBV(v)   *((dword *)(v)) = 0
Functions
static void	dxt1_rgb_quantize (dword *cc, const byte *lines[], int comps)
static void	dxt1_rgba_quantize (dword *cc, const byte *lines[], int comps)
static void	dxt3_rgba_quantize (dword *cc, const byte *lines[], int comps)
static void	dxt5_rgba_quantize (dword *cc, const byte *lines[], int comps)
void TAPIENTRY	dxt1_rgb_decode_1 (const void *texture, int stride, int i, int j, byte *rgba)
void TAPIENTRY	dxt1_rgba_decode_1 (const void *texture, int stride, int i, int j, byte *rgba)
void TAPIENTRY	dxt3_rgba_decode_1 (const void *texture, int stride, int i, int j, byte *rgba)
void TAPIENTRY	dxt5_rgba_decode_1 (const void *texture, int stride, int i, int j, byte *rgba)
Variables
static const int	dxtn_color_tlat [2][4]
static const int	dxtn_alpha_tlat [2][8]
static const byte	_rgb_scale_4 []
static const byte	_rgb_scale_5 []
static const byte	_rgb_scale_6 []