d/freebsd-skq
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

More drive-by stylification, and some clarifications

Browse Source
This commit is contained in:
des 2001-11-06 03:28:21 +00:00
parent ee0efa2718
commit 54f1e4643d
1 changed files with 16 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

26
sys/dev/syscons/rain/rain_saver.c
View File

@ -43,7 +43,12 @@
#define SAVER_NAME "rain_saver"
#define SCRW 320
#define SCRH 200
#define MAX 63
#define MAX 63 /* number of colors (in addition to black) */
#define INCREMENT 4 /* increment between colors */
#define RED(n) ((n) * 3 + 0)
#define GREEN(n) ((n) * 3 + 1)
#define BLUE(n) ((n) * 3 + 2)
static u_char *vid;
static u_char rain_pal[768];
@ -53,11 +58,11 @@ static void
rain_update(video_adapter_t *adp)
{
int i, t;
t = rain_pal[(MAX*3+2)];
for (i = (MAX*3+2); i > 5; i -= 3)
rain_pal[i] = rain_pal[i-3];
rain_pal[5] = t;
t = rain_pal[BLUE(MAX)];
for (i = MAX; i > 1; i--)
rain_pal[BLUE(i)] = rain_pal[BLUE(i - 1)];
rain_pal[BLUE(1)] = t;
load_palette(adp, rain_pal);
}
@ -76,12 +81,13 @@ rain_saver(video_adapter_t *adp, int blank)
blanked++;
vid = (u_char *)adp->va_window;
splx(pl);
bzero(vid, SCRW*SCRH);
bzero(vid, SCRW * SCRH);
for (i = 0; i < SCRW; i += 2)
vid[i] = 1 + (random() % MAX);
for (j = 1, k = SCRW; j < SCRH; j++)
for (i = 0; i < SCRW; i += 2, k += 2)
vid[k] = (vid[k-SCRW] < MAX) ? 1 + vid[k-SCRW] : 1;
vid[k] = (vid[k - SCRW] < MAX) ?
1 + vid[k - SCRW] : 1;
}
/* update display */
@ -107,8 +113,8 @@ rain_init(video_adapter_t *adp)
}
/* intialize the palette */
for (i = 3; i < (MAX+1)*3; i += 3)
rain_pal[i+2] = rain_pal[i-1] + 4;
for (i = 1; i < MAX; i++)
rain_pal[BLUE(i)] = rain_pal[BLUE(i - 1)] + INCREMENT;
return (0);
}