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    Length: 1966 (0x7ae)
    Types: TextFile
    Notes: UNIX file
    Names: »graph.old«

└─⟦26887b7e0⟧ Bits:30009717 Comet 32 harddisk image
    └─⟦28c352965⟧ »/a« UNIX Filesystem
        └─⟦this⟧ »usr/src/gks/h/graph.old« 

TextFile

/*
 *	Graphic routines
 */

#include <sys/types.h>
#include <stdio.h>
#include <vfont.h>
#include <sys/devvm.h>

#define PIXEL_SIZE	8
#define ALL		8
#define NNN		(u_int *)0
#define LINESIZE	80		/* word size of line */
#define BLKSIZE		256
#define RAMSIZE		(256*BLKSIZE)	/* word size of whole ram */
#define RAMSTART	(8192*RAMSIZE)	/* room for up & down scrolls */
#define BIGBLOB		0201		/* gives character box size */
#define GREENCURSOR	(1<<0)
#define DISPLAY		(1<<4)
#define HIGHSPEED	(1<<5)
#define YSIZE		399	

#define abs(x)		(x>=0 ? x : -(x))
#define min(a,b)	(a>b ? b:a)
#define elif		else if

#define Phys_RAM	0xe00000L	/* physical graphics ram */
#define Phys_MPS	0xfff800L	/* physical control page */
typedef enum {
	BLACK, GREEN, BLUE, CYAN, RED, YELLOW, MAGENTA, WHITE
} colour;

typedef struct {
	int x,y;
} point;

typedef struct {
	point low;			/* minimum x,y. Lower left */
	point high;			/* maximum x,y. Upper rigth */
} rectangle;

typedef struct {	
	u_int *base;		/* pointer to int that include u. left*/
	u_int width;		/* number of long across scan line */
	rectangle rect;		/* coordinates of clipping rectangle */
} bitmap;

static int gramstart;		/* word offset of current page */
static bitmap display = {(u_int *)GB_VideoRAM, 80, 0, 0, 639, 399};
static u_int *vram;
static colour lcol = {GREEN};
static colour mcol = {GREEN};
static colour tcol = {GREEN};
static int cheight = {1};
static u_int color[8][8];
static chardes *finfo;		/* character descriptors */
static unsigned char *fbase;	/* character bitmaps */
static chardes *blp;		/* pointer to BIGBLOB */
static int	Fh;

static int tmask[]={
		0x01,
		0x02,
		0x04,
		0x08
};
static u_int gmask[]={
		0xfefefeffL,
		0xfdfdfdffL,
		0xfbfbfbffL,
		0xf7f7f7ffL,
		0xefefefffL,
		0xdfdfdfffL,
		0xbfbfbfffL,
		0x7f7f7fffL,
		0x000000ffL
};
static u_int fullcol[]={
		0x00000000L,
		0x0000ff00L,
		0x00ff0000L,
		0x00ffff00L,
		0xff000000L,
		0xff00ff00L,
		0xffff0000L,
		0xffffff00L
};