1 /*- 2 * Copyright (c) 1998 Dag-Erling Co�dan Sm�rgrav 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 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 16 * 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. 27 * 28 * $FreeBSD$ 29 */ 30 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> 37 #include <sys/fbio.h> 38 39 #include <dev/fb/fbreg.h> 40 #include <dev/fb/splashreg.h> 41 #include <dev/syscons/syscons.h> 42 43 #define SAVER_NAME "warp_saver" 44 #define SCRW 320 45 #define SCRH 200 46 #define SPP 15 47 #define STARS (SPP * (1 + 2 + 4 + 8)) 48 49 static u_char *vid; 50 static int blanked; 51 static int star[STARS]; 52 static u_char warp_pal[768] = { 53 0x00, 0x00, 0x00, 54 0x66, 0x66, 0x66, 55 0x99, 0x99, 0x99, 56 0xcc, 0xcc, 0xcc, 57 0xff, 0xff, 0xff 58 /* the rest is zero-filled by the compiler */ 59 }; 60 61 static void 62 warp_update(void) 63 { 64 int i, j, k, n; 65 66 for (i = 1, k = 0, n = SPP*8; i < 5; i++, n /= 2) { 67 for (j = 0; j < n; j++, k++) { 68 vid[star[k]] = 0; 69 star[k] += i; 70 if (star[k] > SCRW * SCRH) 71 star[k] -= SCRW * SCRH; 72 vid[star[k]] = i; 73 } 74 } 75 } 76 77 static int 78 warp_saver(video_adapter_t *adp, int blank) 79 { 80 int pl; 81 82 if (blank) { 83 /* switch to graphics mode */ 84 if (blanked <= 0) { 85 pl = splhigh(); 86 set_video_mode(adp, M_VGA_CG320); 87 load_palette(adp, warp_pal); 88 set_border(adp, 0); 89 blanked++; 90 vid = (u_char *)adp->va_window; 91 splx(pl); 92 bzero(vid, SCRW * SCRH); 93 } 94 95 /* update display */ 96 warp_update(); 97 } else { 98 blanked = 0; 99 } 100 return (0); 101 } 102 103 static int 104 warp_init(video_adapter_t *adp) 105 { 106 video_info_t info; 107 int i; 108 109 /* check that the console is capable of running in 320x200x256 */ 110 if (get_mode_info(adp, M_VGA_CG320, &info)) { 111 log(LOG_NOTICE, 112 "%s: the console does not support M_VGA_CG320\n", 113 SAVER_NAME); 114 return (ENODEV); 115 } 116 117 /* randomize the star field */ 118 for (i = 0; i < STARS; i++) 119 star[i] = random() % (SCRW * SCRH); 120 121 return (0); 122 } 123 124 static int 125 warp_term(video_adapter_t *adp) 126 { 127 return (0); 128 } 129 130 static scrn_saver_t warp_module = { 131 SAVER_NAME, 132 warp_init, 133 warp_term, 134 warp_saver, 135 NULL 136 }; 137 138 SAVER_MODULE(warp_saver, warp_module); 139