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 static u_char *vid; 44 static int blanked; 45 46 #define SCRW 320 47 #define SCRH 200 48 #define SPP 15 49 #define STARS (SPP*(1+2+4+8)) 50 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 static int 77 warp_saver(video_adapter_t *adp, int blank) 78 { 79 int pl; 80 81 if (blank) { 82 /* switch to graphics mode */ 83 if (blanked <= 0) { 84 pl = splhigh(); 85 set_video_mode(adp, M_VGA_CG320); 86 load_palette(adp, warp_pal); 87 #if 0 /* XXX conflict */ 88 set_border(adp, 0); 89 #endif 90 blanked++; 91 vid = (u_char *)adp->va_window; 92 splx(pl); 93 bzero(vid, SCRW*SCRH); 94 } 95 96 /* update display */ 97 warp_update(); 98 99 } else { 100 blanked = 0; 101 } 102 return 0; 103 } 104 105 static int 106 warp_init(video_adapter_t *adp) 107 { 108 video_info_t info; 109 int i; 110 111 /* check that the console is capable of running in 320x200x256 */ 112 if (get_mode_info(adp, M_VGA_CG320, &info)) { 113 log(LOG_NOTICE, "warp_saver: the console does not support M_VGA_CG320\n"); 114 return ENODEV; 115 } 116 117 /* randomize the star field */ 118 for (i = 0; i < STARS; i++) { 119 star[i] = random() % (SCRW*SCRH); 120 } 121 122 blanked = 0; 123 124 return 0; 125 } 126 127 static int 128 warp_term(video_adapter_t *adp) 129 { 130 return 0; 131 } 132 133 static scrn_saver_t warp_module = { 134 "warp_saver", warp_init, warp_term, warp_saver, NULL, 135 }; 136 137 SAVER_MODULE(warp_saver, warp_module); 138