140 lines
3.5 KiB
C
140 lines
3.5 KiB
C
/*-
|
|
* Copyright (c) 1998 Dag-Erling Coïdan Smørgrav
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer
|
|
* in this position and unchanged.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. The name of the author may not be used to endorse or promote products
|
|
* derived from this software without specific prior written permission
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/module.h>
|
|
#include <sys/syslog.h>
|
|
#include <sys/consio.h>
|
|
#include <sys/fbio.h>
|
|
|
|
#include <machine/random.h>
|
|
|
|
#include <dev/fb/fbreg.h>
|
|
#include <dev/fb/splashreg.h>
|
|
#include <dev/syscons/syscons.h>
|
|
|
|
static u_char *vid;
|
|
static int blanked;
|
|
|
|
#define SCRW 320
|
|
#define SCRH 200
|
|
#define SPP 15
|
|
#define STARS (SPP*(1+2+4+8))
|
|
|
|
static int star[STARS];
|
|
static u_char warp_pal[768] = {
|
|
0x00, 0x00, 0x00,
|
|
0x66, 0x66, 0x66,
|
|
0x99, 0x99, 0x99,
|
|
0xcc, 0xcc, 0xcc,
|
|
0xff, 0xff, 0xff
|
|
/* the rest is zero-filled by the compiler */
|
|
};
|
|
|
|
static void
|
|
warp_update(void)
|
|
{
|
|
int i, j, k, n;
|
|
|
|
for (i = 1, k = 0, n = SPP*8; i < 5; i++, n /= 2)
|
|
for (j = 0; j < n; j++, k++) {
|
|
vid[star[k]] = 0;
|
|
star[k] += i;
|
|
if (star[k] > SCRW*SCRH)
|
|
star[k] -= SCRW*SCRH;
|
|
vid[star[k]] = i;
|
|
}
|
|
}
|
|
|
|
static int
|
|
warp_saver(video_adapter_t *adp, int blank)
|
|
{
|
|
int pl;
|
|
|
|
if (blank) {
|
|
/* switch to graphics mode */
|
|
if (blanked <= 0) {
|
|
pl = splhigh();
|
|
set_video_mode(adp, M_VGA_CG320);
|
|
load_palette(adp, warp_pal);
|
|
#if 0 /* XXX conflict */
|
|
set_border(adp, 0);
|
|
#endif
|
|
blanked++;
|
|
vid = (u_char *)adp->va_window;
|
|
splx(pl);
|
|
bzero(vid, SCRW*SCRH);
|
|
}
|
|
|
|
/* update display */
|
|
warp_update();
|
|
|
|
} else {
|
|
blanked = 0;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
warp_init(video_adapter_t *adp)
|
|
{
|
|
video_info_t info;
|
|
int i;
|
|
|
|
/* check that the console is capable of running in 320x200x256 */
|
|
if (get_mode_info(adp, M_VGA_CG320, &info)) {
|
|
log(LOG_NOTICE, "warp_saver: the console does not support M_VGA_CG320\n");
|
|
return ENODEV;
|
|
}
|
|
|
|
/* randomize the star field */
|
|
for (i = 0; i < STARS; i++) {
|
|
star[i] = random() % (SCRW*SCRH);
|
|
}
|
|
|
|
blanked = 0;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
warp_term(video_adapter_t *adp)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static scrn_saver_t warp_module = {
|
|
"warp_saver", warp_init, warp_term, warp_saver, NULL,
|
|
};
|
|
|
|
SAVER_MODULE(warp_saver, warp_module);
|