vid_3dfxsvga.c

   1 /*
   2         vid_3dfxsvga.c
   3
   4         OpenGL device driver for 3Dfx chipsets running Linux
   5
   6         Copyright (C) 1996-1997  Id Software, Inc.
   7         Copyright (C) 1999,2000  Nelson Rush.
   8         Copyright (C) 1999,2000  contributors of the QuakeForge project
   9         Please see the file "AUTHORS" for a list of contributors
  10
  11         This program is free software; you can redistribute it and/or
  12         modify it under the terms of the GNU General Public License
  13         as published by the Free Software Foundation; either version 2
  14         of the License, or (at your option) any later version.
  15
  16         This program is distributed in the hope that it will be useful,
  17         but WITHOUT ANY WARRANTY; without even the implied warranty of
  18         MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  19
  20         See the GNU General Public License for more details.
  21
  22         You should have received a copy of the GNU General Public License
  23         along with this program; if not, write to:
  24
  25                 Free Software Foundation, Inc.
  26                 59 Temple Place - Suite 330
  27                 Boston, MA  02111-1307, USA
  28
  29         $Id$
  30 */
  31
  32 #include "quakedef.h"
  33 #include "sys.h"
  34 #include "console.h"
  35 #include "sbar.h"
  36
  37 #include <stdio.h>
  38 #include <stdlib.h>
  39 #include <signal.h>
  40 #include <string.h>
  41
  42 #include <dlfcn.h>
  43
  44 #include <GL/gl.h>
  45 #include <GL/fxmesa.h>
  46 #include <glide/sst1vid.h>
  47
  48
  49 viddef_t        vid;    // global video state
  50
  51 static void     *dlhand = NULL;
  52
  53 static fxMesaContext fc = NULL;
  54 static int      scr_width, scr_height;
  55
  56 int     VID_options_items = 0;
  57
  58 /*-----------------------------------------------------------------------*/
  59 void D_BeginDirectRect (int x, int y, qbyte *pbitmap, int width, int height)
  60 {
  61 }
  62
  63 void D_EndDirectRect (int x, int y, int width, int height)
  64 {
  65 }
  66
  67 void VID_Shutdown(void)
  68 {
  69         if (!fc)
  70                 return;
  71
  72         fxMesaDestroyContext(fc);
  73
  74         GL_CloseLibrary();
  75 }
  76
  77 void signal_handler(int sig)
  78 {
  79         printf("Received signal %d, exiting...\n", sig);
  80         Host_Shutdown();
  81         abort();
  82         exit(0);
  83 }
  84
  85 void InitSig(void)
  86 {
  87         signal(SIGHUP, signal_handler);
  88         signal(SIGINT, signal_handler);
  89         signal(SIGQUIT, signal_handler);
  90         signal(SIGILL, signal_handler);
  91         signal(SIGTRAP, signal_handler);
  92         signal(SIGBUS, signal_handler);
  93         signal(SIGSEGV, signal_handler);
  94         signal(SIGTERM, signal_handler);
  95 }
  96
  97 typedef void (GLAPIENTRY *gl3DfxSetDitherModeEXT_FUNC) (GrDitherMode_t mode);
  98
  99 void VID_SetupDithering(void)
 100 {
 101         Con_Printf ("Dithering: ");
 102
 103         dlhand = dlopen (NULL, RTLD_LAZY);
 104
 105         if (dlhand == NULL) {
 106                 Con_SafePrintf ("unable to set.\n");
 107                 return;
 108         }
 109
 110         if (strstr(gl_extensions, "3DFX_set_dither_mode")) {
 111                 gl3DfxSetDitherModeEXT_FUNC dither_select = NULL;
 112
 113                 dither_select = (void *) dlsym(dlhand, "gl3DfxSetDitherModeEXT");
 114
 115                 if (COM_CheckParm ("-dither_2x2")) {
 116                         dither_select(GR_DITHER_2x2);
 117                         Con_Printf ("2x2.\n");
 118                 } else if (COM_CheckParm ("-dither_4x4")) {
 119                         dither_select(GR_DITHER_4x4);
 120                         Con_Printf ("4x4.\n");
 121                 } else {
 122                         qglDisable(GL_DITHER);
 123                         Con_Printf ("disabled.\n");
 124                 }
 125         }
 126         dlclose(dlhand);
 127         dlhand = NULL;
 128 }
 129
 130 /*
 131 =================
 132 VID_GetWindowSize
 133 =================
 134 */
 135 void VID_GetWindowSize (int *x, int *y, int *width, int *height)
 136 {
 137         *x = *y = 0;
 138         *width = scr_width;
 139         *height = scr_height;
 140 }
 141
 142 void VID_Finish (void)
 143 {
 144         if (r_render.integer)
 145         {
 146                 qglFinish();
 147                 fxMesaSwapBuffers();
 148         }
 149 }
 150
 151 static int resolutions[][3]={
 152         { 320,  200,    GR_RESOLUTION_320x200 },
 153         { 320,  240,    GR_RESOLUTION_320x240 },
 154         { 400,  256,    GR_RESOLUTION_400x256 },
 155         { 400,  300,    GR_RESOLUTION_400x300 },
 156         { 512,  256,    GR_RESOLUTION_512x256 },
 157         { 512,  384,    GR_RESOLUTION_512x384 },
 158         { 640,  200,    GR_RESOLUTION_640x200 },
 159         { 640,  350,    GR_RESOLUTION_640x350 },
 160         { 640,  400,    GR_RESOLUTION_640x400 },
 161         { 640,  480,    GR_RESOLUTION_640x480 },
 162         { 800,  600,    GR_RESOLUTION_800x600 },
 163         { 856,  480,    GR_RESOLUTION_856x480 },
 164         { 960,  720,    GR_RESOLUTION_960x720 },
 165 #ifdef GR_RESOLUTION_1024x768
 166         { 1024, 768,    GR_RESOLUTION_1024x768 },
 167 #endif
 168 #ifdef GR_RESOLUTION_1152x864
 169         { 1152, 864,    GR_RESOLUTION_1152x864 },
 170 #endif
 171 #ifdef GR_RESOLUTION_1280x960
 172         { 1280, 960,    GR_RESOLUTION_1280x960 },
 173 #endif
 174 #ifdef GR_RESOLUTION_1280x1024
 175         { 1280, 1024,   GR_RESOLUTION_1280x1024 },
 176 #endif
 177 #ifdef GR_RESOLUTION_1600x1024
 178         { 1600, 1024,   GR_RESOLUTION_1600x1024 },
 179 #endif
 180 #ifdef GR_RESOLUTION_1600x1200
 181         { 1600, 1200,   GR_RESOLUTION_1600x1200 },
 182 #endif
 183 #ifdef GR_RESOLUTION_1792x1344
 184         { 1792, 1344,   GR_RESOLUTION_1792x1344 },
 185 #endif
 186 #ifdef GR_RESOLUTION_1856x1392
 187         { 1856, 1392,   GR_RESOLUTION_1856x1392 },
 188 #endif
 189 #ifdef GR_RESOLUTION_1920x1440
 190         { 1920, 1440,   GR_RESOLUTION_1920x1440 },
 191 #endif
 192 #ifdef GR_RESOLUTION_2048x1536
 193         { 2048, 1536,   GR_RESOLUTION_2048x1536 },
 194 #endif
 195 #ifdef GR_RESOLUTION_2048x2048
 196         { 2048, 2048,   GR_RESOLUTION_2048x2048 }
 197 #endif
 198 };
 199
 200 #define NUM_RESOLUTIONS         (sizeof(resolutions)/(sizeof(int)*3))
 201
 202
 203 static int
 204 findres(int *width, int *height)
 205 {
 206         int i;
 207
 208         for(i=0; i < NUM_RESOLUTIONS; i++) {
 209                 if((*width <= resolutions[i][0]) &&
 210                    (*height <= resolutions[i][1])) {
 211                         *width = resolutions[i][0];
 212                         *height = resolutions[i][1];
 213                         return resolutions[i][2];
 214                 }
 215         }
 216
 217         *width = 640;
 218         *height = 480;
 219         return GR_RESOLUTION_640x480;
 220 }
 221
 222 int VID_SetGamma(float prescale, float gamma, float scale, float base)
 223 {
 224         return FALSE;
 225 }
 226
 227 void VID_Init(void)
 228 {
 229         int i;
 230         GLint attribs[32];
 231         int width = 640, height = 480;
 232
 233         GL_OpenLibrary();
 234
 235 // set vid parameters
 236         attribs[0] = FXMESA_DOUBLEBUFFER;
 237         attribs[1] = FXMESA_ALPHA_SIZE;
 238         attribs[2] = 1;
 239         attribs[3] = FXMESA_DEPTH_SIZE;
 240         attribs[4] = 1;
 241         attribs[5] = FXMESA_NONE;
 242
 243         if ((i = COM_CheckParm("-width")) != 0)
 244                 width = atoi(com_argv[i+1]);
 245         if ((i = COM_CheckParm("-height")) != 0)
 246                 height = atoi(com_argv[i+1]);
 247
 248         if ((i = COM_CheckParm("-conwidth")) != 0)
 249                 vid.conwidth = atoi(com_argv[i+1]);
 250         else
 251                 vid.conwidth = 640;
 252
 253         vid.conwidth &= 0xfff8; // make it a multiple of eight
 254
 255         if (vid.conwidth < 320)
 256                 vid.conwidth = 320;
 257
 258         // pick a conheight that matches with correct aspect
 259         vid.conheight = vid.conwidth*3 / 4;
 260
 261         if ((i = COM_CheckParm("-conheight")) != 0)
 262                 vid.conheight = atoi(com_argv[i+1]);
 263         if (vid.conheight < 200)
 264                 vid.conheight = 200;
 265
 266         fc = fxMesaCreateContext(0, findres(&width, &height), GR_REFRESH_75Hz,
 267                 attribs);
 268         if (!fc)
 269                 Sys_Error("Unable to create 3DFX context.\n");
 270
 271         scr_width = width;
 272         scr_height = height;
 273
 274         fxMesaMakeCurrent(fc);
 275
 276         if (vid.conheight > height)
 277                 vid.conheight = height;
 278         if (vid.conwidth > width)
 279                 vid.conwidth = width;
 280
 281         InitSig(); // trap evil signals
 282
 283         GL_Init();
 284
 285         VID_SetupDithering(); // 3DFX specific
 286
 287         vid_hidden = false;
 288
 289         Con_SafePrintf ("Video mode %dx%d initialized.\n", width, height);
 290 }
 291
 292 void VID_ExtraOptionDraw(unsigned int options_draw_cursor)
 293 {
 294 }
 295
 296 void VID_ExtraOptionCmd(int option_cursor)
 297 {
 298 }
 299
 300 void VID_SetCaption (char *text)
 301 {
 302 }
 303
 304 void VID_HandlePause (qboolean pause)
 305 {
 306 }
 307