#include <stdlib.h>
#include <stdio.h>
#include "zbuffer.h"
#include <assert.h>

Macros
#define	_R 5

#define	_G 9

#define	_B 5

#define	_DX 4

#define	_DY 4

#define	_D (_DX*_DY)

#define	_MIX(r, g, b) ( ((g)<<6) \| ((b)<<3) \| (r) )

#define	DITHER_TABLE_SIZE (1 << 15)

#define	DITHER_INDEX(r, g, b) ((b) + (g) * _B + (r) * (_B * _G))

#define	MAXC 256

#define	DITHER_PIXEL2(a)

Functions
void	ZB_initDither (ZBuffer zb, int nb_colors, unsigned char color_indexes, int *color_table)

void	ZB_closeDither (ZBuffer *zb)

void	ZB_ditherFrameBuffer (ZBuffer zb, unsigned char buf, int linesize)

Macro Definition Documentation

◆ _B

#define _B 5

Definition at line 19 of file zdither.c.

◆ _D

#define _D (_DX*_DY)

Definition at line 22 of file zdither.c.

◆ _DX

#define _DX 4

Definition at line 20 of file zdither.c.

◆ _DY

#define _DY 4

Definition at line 21 of file zdither.c.

◆ _G

#define _G 9

Definition at line 18 of file zdither.c.

◆ _MIX

#define _MIX	(	r,
		g,
		b
	)	( ((g)<<6) \| ((b)<<3) \| (r) )

Definition at line 23 of file zdither.c.

◆ _R

#define _R 5

Definition at line 17 of file zdither.c.

◆ DITHER_INDEX

#define DITHER_INDEX	(	r,
		g,
		b
	)	((b) + (g) * _B + (r) * (_B * _G))

Definition at line 27 of file zdither.c.

◆ DITHER_PIXEL2

#define DITHER_PIXEL2 ( a )

Value:

{ \
  register int v,t,r,g,c;           \
  v=*(unsigned int *)(pp+(a));                  \
  g=(v & 0x07DF07DF) + g_d; \
  r=(((v & 0xF800F800) >> 2) + r_d) & 0x70007000; \
  t=r | g; \
  c=ctable[t & 0xFFFF] | (ctable[t >> 16] << 8); \
  *(unsigned short *)(dest+(a))=c;  \
}

Definition at line 94 of file zdither.c.

◆ DITHER_TABLE_SIZE

#define DITHER_TABLE_SIZE (1 << 15)

Definition at line 25 of file zdither.c.

◆ MAXC

#define MAXC 256

Definition at line 29 of file zdither.c.

Function Documentation

◆ ZB_closeDither()

void ZB_closeDither ( ZBuffer * zb )

Definition at line 79 of file zdither.c.

◆ ZB_ditherFrameBuffer()

void ZB_ditherFrameBuffer	(	ZBuffer *	zb,
		unsigned char *	buf,
		int	linesize
	)

Definition at line 109 of file zdither.c.

◆ ZB_initDither()

void ZB_initDither	(	ZBuffer *	zb,
		int	nb_colors,
		unsigned char *	color_indexes,
		int *	color_table
	)

Definition at line 39 of file zdither.c.

Macros

Functions