2 * Copyright (c) 1999 Brad Forschinger
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer,
10 * without modification, immediately at the beginning of the file.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 * $FreeBSD: src/sys/modules/syscons/fire/fire_saver.c,v 1.6.2.1 2000/05/10 14:01:23 obrien Exp $
27 * $DragonFly: src/sys/dev/misc/syscons/fire/fire_saver.c,v 1.4 2006/09/03 18:52:27 dillon Exp $
31 * brad forschinger, 19990504 <retch@flag.blackened.net>
33 * written with much help from warp_saver.c
37 #include <sys/param.h>
38 #include <sys/systm.h>
39 #include <sys/kernel.h>
40 #include <sys/module.h>
41 #include <sys/syslog.h>
42 #include <sys/consio.h>
44 #include <sys/random.h>
46 #include <dev/video/fb/fbreg.h>
47 #include <dev/video/fb/splashreg.h>
48 #include "../syscons.h"
54 static u_char fire_pal[768];
55 static u_char buf[X_SIZE * (Y_SIZE + 1)];
59 fire_saver(video_adapter_t *adp, int blank)
68 set_video_mode(adp, M_VGA_CG320);
70 /* build and load palette */
71 red = green = blue = 0;
72 for (palette_index = 0; palette_index < 256; palette_index++) {
77 fire_pal[(palette_index * 3) + 0] = red;
78 fire_pal[(palette_index * 3) + 1] = green;
79 fire_pal[(palette_index * 3) + 2] = blue;
81 load_palette(adp, fire_pal);
84 vid = (u_char *) adp->va_window;
86 /* make a new bottom line */
87 for (x = 0, y = Y_SIZE; x < X_SIZE; x++)
88 buf[x + (y * X_SIZE)] = krandom() % 160 + 96;
90 /* fade the flames out */
91 for (y = 0; y < Y_SIZE; y++) {
92 for (x = 0; x < X_SIZE; x++) {
93 buf[x + (y * X_SIZE)] = (buf[(x + 0) + ((y + 0) * X_SIZE)] +
94 buf[(x - 1) + ((y + 1) * X_SIZE)] +
95 buf[(x + 0) + ((y + 1) * X_SIZE)] +
96 buf[(x + 1) + ((y + 1) * X_SIZE)]) / 4;
97 if (buf[x + (y * X_SIZE)] > 0)
98 buf[x + (y * X_SIZE)]--;
102 /* blit our buffer into video ram */
103 memcpy(vid, buf, X_SIZE * Y_SIZE);
112 fire_initialise(video_adapter_t *adp)
116 /* check that the console is capable of running in 320x200x256 */
117 if (get_mode_info(adp, M_VGA_CG320, &info)) {
118 log(LOG_NOTICE, "fire_saver: the console does not support M_VGA_CG320\n");
127 fire_terminate(video_adapter_t *adp)
132 static scrn_saver_t fire_module = {
133 "fire_saver", fire_initialise, fire_terminate, fire_saver, NULL
136 SAVER_MODULE(fire_saver, fire_module);