2 * Copyright (c) 1998 Dag-Erling Coïdan Smørgrav
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 * in this position and unchanged.
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.
14 * 3. The name of the author may not be used to endorse or promote products
15 * derived from this software without specific prior written permission
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31 #include <sys/param.h>
32 #include <sys/systm.h>
33 #include <sys/kernel.h>
34 #include <sys/module.h>
35 #include <sys/syslog.h>
36 #include <sys/consio.h>
39 #include <dev/fb/fbreg.h>
40 #include <dev/fb/splashreg.h>
41 #include <dev/syscons/syscons.h>
43 #define SAVER_NAME "warp_saver"
45 #define STARS (SPP * (1 + 2 + 4 + 8))
47 #define SET_ORIGIN(adp, o) do { \
49 if (oo != last_origin) \
50 vidd_set_win_org(adp, last_origin = oo); \
54 static int banksize, scrmode, bpsl, scrw, scrh;
56 static int star[STARS];
57 static u_char warp_pal[768] = {
63 /* the rest is zero-filled by the compiler */
67 warp_update(video_adapter_t *adp)
72 for (i = 1, k = 0, n = SPP*8; i < 5; i++, n /= 2) {
73 for (j = 0; j < n; j++, k++) {
74 p = (star[k] / scrw) * bpsl + (star[k] % scrw);
76 while (p > banksize) {
83 if (star[k] > scrw*scrh)
85 p = (star[k] / scrw) * bpsl + (star[k] % scrw);
87 while (p > banksize) {
98 warp_saver(video_adapter_t *adp, int blank)
103 /* switch to graphics mode */
106 vidd_set_mode(adp, scrmode);
107 vidd_load_palette(adp, warp_pal);
108 vidd_set_border(adp, 0);
110 vid = (u_char *)adp->va_window;
111 banksize = adp->va_window_size;
112 bpsl = adp->va_line_width;
125 warp_init(video_adapter_t *adp)
130 if (!vidd_get_info(adp, M_VGA_CG320, &info)) {
131 scrmode = M_VGA_CG320;
132 } else if (!vidd_get_info(adp, M_PC98_PEGC640x480, &info)) {
133 scrmode = M_PC98_PEGC640x480;
134 } else if (!vidd_get_info(adp, M_PC98_PEGC640x400, &info)) {
135 scrmode = M_PC98_PEGC640x400;
138 "%s: the console does not support M_VGA_CG320\n",
143 scrw = info.vi_width;
144 scrh = info.vi_height;
146 /* randomize the star field */
147 for (i = 0; i < STARS; i++)
148 star[i] = random() % (scrw * scrh);
154 warp_term(video_adapter_t *adp)
159 static scrn_saver_t warp_module = {
167 SAVER_MODULE(warp_saver, warp_module);