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
  60 const char *gl_vendor;
  61 const char *gl_renderer;
  62 const char *gl_version;
  63 const char *gl_extensions;
  64
  65 /*-----------------------------------------------------------------------*/
  66 void D_BeginDirectRect (int x, int y, qbyte *pbitmap, int width, int height)
  67 {
  68 }
  69
  70 void D_EndDirectRect (int x, int y, int width, int height)
  71 {
  72 }
  73
  74 void VID_Shutdown(void)
  75 {
  76         if (!fc)
  77                 return;
  78
  79         fxMesaDestroyContext(fc);
  80 }
  81
  82 void signal_handler(int sig)
  83 {
  84         printf("Received signal %d, exiting...\n", sig);
  85         Host_Shutdown();
  86         abort();
  87         exit(0);
  88 }
  89
  90 void InitSig(void)
  91 {
  92         signal(SIGHUP, signal_handler);
  93         signal(SIGINT, signal_handler);
  94         signal(SIGQUIT, signal_handler);
  95         signal(SIGILL, signal_handler);
  96         signal(SIGTRAP, signal_handler);
  97         signal(SIGBUS, signal_handler);
  98         signal(SIGSEGV, signal_handler);
  99         signal(SIGTERM, signal_handler);
 100 }
 101
 102 typedef void (GLAPIENTRY *gl3DfxSetDitherModeEXT_FUNC) (GrDitherMode_t mode);
 103
 104 void VID_SetupDithering(void)
 105 {
 106         Con_Printf ("Dithering: ");
 107
 108         dlhand = dlopen (NULL, RTLD_LAZY);
 109
 110         if (dlhand == NULL) {
 111                 Con_SafePrintf ("unable to set.\n");
 112                 return;
 113         }
 114
 115         if (strstr(gl_extensions, "3DFX_set_dither_mode")) {
 116                 gl3DfxSetDitherModeEXT_FUNC dither_select = NULL;
 117
 118                 dither_select = (void *) dlsym(dlhand, "gl3DfxSetDitherModeEXT");
 119
 120                 if (COM_CheckParm ("-dither_2x2")) {
 121                         dither_select(GR_DITHER_2x2);
 122                         Con_Printf ("2x2.\n");
 123                 } else if (COM_CheckParm ("-dither_4x4")) {
 124                         dither_select(GR_DITHER_4x4);
 125                         Con_Printf ("4x4.\n");
 126                 } else {
 127                         qglDisable(GL_DITHER);
 128                         Con_Printf ("disabled.\n");
 129                 }
 130         }
 131         dlclose(dlhand);
 132         dlhand = NULL;
 133 }
 134
 135 /*
 136 =================
 137 VID_GetWindowSize
 138 =================
 139 */
 140 void VID_GetWindowSize (int *x, int *y, int *width, int *height)
 141 {
 142         *x = *y = 0;
 143         *width = scr_width;
 144         *height = scr_height;
 145 }
 146
 147 void VID_Finish (void)
 148 {
 149         if (r_render.integer)
 150         {
 151                 qglFinish();
 152                 fxMesaSwapBuffers();
 153         }
 154 }
 155
 156 static int resolutions[][3]={
 157         { 320,  200,    GR_RESOLUTION_320x200 },
 158         { 320,  240,    GR_RESOLUTION_320x240 },
 159         { 400,  256,    GR_RESOLUTION_400x256 },
 160         { 400,  300,    GR_RESOLUTION_400x300 },
 161         { 512,  256,    GR_RESOLUTION_512x256 },
 162         { 512,  384,    GR_RESOLUTION_512x384 },
 163         { 640,  200,    GR_RESOLUTION_640x200 },
 164         { 640,  350,    GR_RESOLUTION_640x350 },
 165         { 640,  400,    GR_RESOLUTION_640x400 },
 166         { 640,  480,    GR_RESOLUTION_640x480 },
 167         { 800,  600,    GR_RESOLUTION_800x600 },
 168         { 856,  480,    GR_RESOLUTION_856x480 },
 169         { 960,  720,    GR_RESOLUTION_960x720 },
 170 #ifdef GR_RESOLUTION_1024x768
 171         { 1024, 768,    GR_RESOLUTION_1024x768 },
 172 #endif
 173 #ifdef GR_RESOLUTION_1152x864
 174         { 1152, 864,    GR_RESOLUTION_1152x864 },
 175 #endif
 176 #ifdef GR_RESOLUTION_1280x960
 177         { 1280, 960,    GR_RESOLUTION_1280x960 },
 178 #endif
 179 #ifdef GR_RESOLUTION_1280x1024
 180         { 1280, 1024,   GR_RESOLUTION_1280x1024 },
 181 #endif
 182 #ifdef GR_RESOLUTION_1600x1024
 183         { 1600, 1024,   GR_RESOLUTION_1600x1024 },
 184 #endif
 185 #ifdef GR_RESOLUTION_1600x1200
 186         { 1600, 1200,   GR_RESOLUTION_1600x1200 },
 187 #endif
 188 #ifdef GR_RESOLUTION_1792x1344
 189         { 1792, 1344,   GR_RESOLUTION_1792x1344 },
 190 #endif
 191 #ifdef GR_RESOLUTION_1856x1392
 192         { 1856, 1392,   GR_RESOLUTION_1856x1392 },
 193 #endif
 194 #ifdef GR_RESOLUTION_1920x1440
 195         { 1920, 1440,   GR_RESOLUTION_1920x1440 },
 196 #endif
 197 #ifdef GR_RESOLUTION_2048x1536
 198         { 2048, 1536,   GR_RESOLUTION_2048x1536 },
 199 #endif
 200 #ifdef GR_RESOLUTION_2048x2048
 201         { 2048, 2048,   GR_RESOLUTION_2048x2048 }
 202 #endif
 203 };
 204
 205 #define NUM_RESOLUTIONS         (sizeof(resolutions)/(sizeof(int)*3))
 206
 207
 208 static int
 209 findres(int *width, int *height)
 210 {
 211         int i;
 212
 213         for(i=0; i < NUM_RESOLUTIONS; i++) {
 214                 if((*width <= resolutions[i][0]) &&
 215                    (*height <= resolutions[i][1])) {
 216                         *width = resolutions[i][0];
 217                         *height = resolutions[i][1];
 218                         return resolutions[i][2];
 219                 }
 220         }
 221
 222         *width = 640;
 223         *height = 480;
 224         return GR_RESOLUTION_640x480;
 225 }
 226
 227 int VID_SetGamma(float prescale, float gamma, float scale, float base)
 228 {
 229         return FALSE;
 230 }
 231
 232 void VID_Init(void)
 233 {
 234         int i;
 235         GLint attribs[32];
 236         int width = 640, height = 480;
 237
 238 // set vid parameters
 239         attribs[0] = FXMESA_DOUBLEBUFFER;
 240         attribs[1] = FXMESA_ALPHA_SIZE;
 241         attribs[2] = 1;
 242         attribs[3] = FXMESA_DEPTH_SIZE;
 243         attribs[4] = 1;
 244         attribs[5] = FXMESA_NONE;
 245
 246         if ((i = COM_CheckParm("-width")) != 0)
 247                 width = atoi(com_argv[i+1]);
 248         if ((i = COM_CheckParm("-height")) != 0)
 249                 height = atoi(com_argv[i+1]);
 250
 251         if ((i = COM_CheckParm("-conwidth")) != 0)
 252                 vid.conwidth = atoi(com_argv[i+1]);
 253         else
 254                 vid.conwidth = 640;
 255
 256         vid.conwidth &= 0xfff8; // make it a multiple of eight
 257
 258         if (vid.conwidth < 320)
 259                 vid.conwidth = 320;
 260
 261         // pick a conheight that matches with correct aspect
 262         vid.conheight = vid.conwidth*3 / 4;
 263
 264         if ((i = COM_CheckParm("-conheight")) != 0)
 265                 vid.conheight = atoi(com_argv[i+1]);
 266         if (vid.conheight < 200)
 267                 vid.conheight = 200;
 268
 269         fc = fxMesaCreateContext(0, findres(&width, &height), GR_REFRESH_75Hz,
 270                 attribs);
 271         if (!fc)
 272                 Sys_Error("Unable to create 3DFX context.\n");
 273
 274         scr_width = width;
 275         scr_height = height;
 276
 277         fxMesaMakeCurrent(fc);
 278
 279         if (vid.conheight > height)
 280                 vid.conheight = height;
 281         if (vid.conwidth > width)
 282                 vid.conwidth = width;
 283
 284         InitSig(); // trap evil signals
 285
 286         GL_Init();
 287
 288         VID_SetupDithering(); // 3DFX specific
 289
 290         Con_SafePrintf ("Video mode %dx%d initialized.\n", width, height);
 291 }
 292
 293 void VID_ExtraOptionDraw(unsigned int options_draw_cursor)
 294 {
 295 }
 296
 297 void VID_ExtraOptionCmd(int option_cursor)
 298 {
 299 }
 300
 301 void VID_SetCaption (char *text)
 302 {
 303 }
 304
 305 void VID_HandlePause (qboolean pause)
 306 {
 307 }
 308