drawmethods.c File Reference

#include "drawmethods.h"

Macros
#define	DRAWMETHOD_PLUS(_out, _backbuf, _col)
#define	DRAWMETHOD   DRAWMETHOD_PLUS(*p,*p,col)

Functions
void	draw_line (Pixel *data, int x1, int y1, int x2, int y2, int col, int screenx, int screeny)

Macro Definition Documentation

DRAWMETHOD

#define DRAWMETHOD   DRAWMETHOD_PLUS(*p,*p,col)

DRAWMETHOD_PLUS

#define DRAWMETHOD_PLUS	(		_out,
			_backbuf,
			_col
	)

Value:

{\
      int tra=0,i=0;\
      unsigned char *bra = (unsigned char*)&(_backbuf);\
      unsigned char *dra = (unsigned char*)&(_out);\
      unsigned char *cra = (unsigned char*)&(_col);\
      for (;i<4;i++) {\
                                tra = *cra;\
                                tra += *bra;\
                                if (tra>255) tra=255;\
                                *dra = tra;\
                                ++dra;++cra;++bra;\
                        }\
}

Function Documentation

draw_line()

void draw_line	(	Pixel *	data,
		int	x1,
		int	y1,
		int	x2,
		int	y2,
		int	col,
		int	screenx,
		int	screeny
	)

References DRAWMETHOD.

Referenced by setOptimizedMethods().