4 OpenGL device driver for 3Dfx chipsets running Linux
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
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.
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.
20 See the GNU General Public License for more details.
22 You should have received a copy of the GNU General Public License
23 along with this program; if not, write to:
25 Free Software Foundation, Inc.
26 59 Temple Place - Suite 330
27 Boston, MA 02111-1307, USA
45 #include <GL/fxmesa.h>
46 #include <glide/sst1vid.h>
49 viddef_t vid; // global video state
51 static void *dlhand = NULL;
53 static fxMesaContext fc = NULL;
54 static int scr_width, scr_height;
56 int VID_options_items = 0;
58 /*-----------------------------------------------------------------------*/
60 float gldepthmin, gldepthmax;
62 const char *gl_vendor;
63 const char *gl_renderer;
64 const char *gl_version;
65 const char *gl_extensions;
67 /*-----------------------------------------------------------------------*/
68 void D_BeginDirectRect (int x, int y, byte *pbitmap, int width, int height)
72 void D_EndDirectRect (int x, int y, int width, int height)
76 void VID_Shutdown(void)
81 fxMesaDestroyContext(fc);
84 void signal_handler(int sig)
86 printf("Received signal %d, exiting...\n", sig);
95 signal(SIGHUP, signal_handler);
96 signal(SIGINT, signal_handler);
97 signal(SIGQUIT, signal_handler);
98 signal(SIGILL, signal_handler);
99 signal(SIGTRAP, signal_handler);
100 // signal(SIGIOT, signal_handler);
101 signal(SIGBUS, signal_handler);
102 // signal(SIGFPE, signal_handler);
103 signal(SIGSEGV, signal_handler);
104 signal(SIGTERM, signal_handler);
107 typedef void (GLAPIENTRY *gl3DfxSetDitherModeEXT_FUNC) (GrDitherMode_t mode);
109 void VID_SetupDithering(void)
111 Con_Printf ("Dithering: ");
113 dlhand = dlopen (NULL, RTLD_LAZY);
115 if (dlhand == NULL) {
116 Con_SafePrintf ("unable to set.\n");
120 if (strstr(gl_extensions, "3DFX_set_dither_mode")) {
121 gl3DfxSetDitherModeEXT_FUNC dither_select = NULL;
123 dither_select = (void *) dlsym(dlhand, "gl3DfxSetDitherModeEXT");
125 if (COM_CheckParm ("-dither_2x2")) {
126 dither_select(GR_DITHER_2x2);
127 Con_Printf ("2x2.\n");
128 } else if (COM_CheckParm ("-dither_4x4")) {
129 dither_select(GR_DITHER_4x4);
130 Con_Printf ("4x4.\n");
132 glDisable(GL_DITHER);
133 Con_Printf ("disabled.\n");
146 void GL_BeginRendering (int *x, int *y, int *width, int *height)
150 *height = scr_height;
152 // if (!wglMakeCurrent( maindc, baseRC ))
153 // Sys_Error ("wglMakeCurrent failed");
155 // glViewport (*x, *y, *width, *height);
159 void GL_EndRendering (void)
161 if (!r_render.integer)
167 static int resolutions[][3]={
168 { 320, 200, GR_RESOLUTION_320x200 },
169 { 320, 240, GR_RESOLUTION_320x240 },
170 { 400, 256, GR_RESOLUTION_400x256 },
171 { 400, 300, GR_RESOLUTION_400x300 },
172 { 512, 256, GR_RESOLUTION_512x256 },
173 { 512, 384, GR_RESOLUTION_512x384 },
174 { 640, 200, GR_RESOLUTION_640x200 },
175 { 640, 350, GR_RESOLUTION_640x350 },
176 { 640, 400, GR_RESOLUTION_640x400 },
177 { 640, 480, GR_RESOLUTION_640x480 },
178 { 800, 600, GR_RESOLUTION_800x600 },
179 { 856, 480, GR_RESOLUTION_856x480 },
180 { 960, 720, GR_RESOLUTION_960x720 },
181 #ifdef GR_RESOLUTION_1024x768
182 { 1024, 768, GR_RESOLUTION_1024x768 },
184 #ifdef GR_RESOLUTION_1152x864
185 { 1152, 864, GR_RESOLUTION_1152x864 },
187 #ifdef GR_RESOLUTION_1280x960
188 { 1280, 960, GR_RESOLUTION_1280x960 },
190 #ifdef GR_RESOLUTION_1280x1024
191 { 1280, 1024, GR_RESOLUTION_1280x1024 },
193 #ifdef GR_RESOLUTION_1600x1024
194 { 1600, 1024, GR_RESOLUTION_1600x1024 },
196 #ifdef GR_RESOLUTION_1600x1200
197 { 1600, 1200, GR_RESOLUTION_1600x1200 },
199 #ifdef GR_RESOLUTION_1792x1344
200 { 1792, 1344, GR_RESOLUTION_1792x1344 },
202 #ifdef GR_RESOLUTION_1856x1392
203 { 1856, 1392, GR_RESOLUTION_1856x1392 },
205 #ifdef GR_RESOLUTION_1920x1440
206 { 1920, 1440, GR_RESOLUTION_1920x1440 },
208 #ifdef GR_RESOLUTION_2048x1536
209 { 2048, 1536, GR_RESOLUTION_2048x1536 },
211 #ifdef GR_RESOLUTION_2048x2048
212 { 2048, 2048, GR_RESOLUTION_2048x2048 }
216 #define NUM_RESOLUTIONS (sizeof(resolutions)/(sizeof(int)*3))
220 findres(int *width, int *height)
224 for(i=0; i < NUM_RESOLUTIONS; i++) {
225 if((*width <= resolutions[i][0]) &&
226 (*height <= resolutions[i][1])) {
227 *width = resolutions[i][0];
228 *height = resolutions[i][1];
229 return resolutions[i][2];
235 return GR_RESOLUTION_640x480;
238 int VID_SetGamma(float prescale, float gamma, float scale, float base)
247 int width = 640, height = 480;
249 // set vid parameters
250 attribs[0] = FXMESA_DOUBLEBUFFER;
251 attribs[1] = FXMESA_ALPHA_SIZE;
253 attribs[3] = FXMESA_DEPTH_SIZE;
255 attribs[5] = FXMESA_NONE;
257 if ((i = COM_CheckParm("-width")) != 0)
258 width = atoi(com_argv[i+1]);
259 if ((i = COM_CheckParm("-height")) != 0)
260 height = atoi(com_argv[i+1]);
262 if ((i = COM_CheckParm("-conwidth")) != 0)
263 vid.conwidth = atoi(com_argv[i+1]);
267 vid.conwidth &= 0xfff8; // make it a multiple of eight
269 if (vid.conwidth < 320)
272 // pick a conheight that matches with correct aspect
273 vid.conheight = vid.conwidth*3 / 4;
275 if ((i = COM_CheckParm("-conheight")) != 0)
276 vid.conheight = atoi(com_argv[i+1]);
277 if (vid.conheight < 200)
280 fc = fxMesaCreateContext(0, findres(&width, &height), GR_REFRESH_75Hz,
283 Sys_Error("Unable to create 3DFX context.\n");
288 fxMesaMakeCurrent(fc);
290 if (vid.conheight > height)
291 vid.conheight = height;
292 if (vid.conwidth > width)
293 vid.conwidth = width;
295 InitSig(); // trap evil signals
299 VID_SetupDithering(); // 3DFX specific
301 Con_SafePrintf ("Video mode %dx%d initialized.\n", width, height);
303 // vid.recalc_refdef = 1; // force a surface cache flush
306 void VID_ExtraOptionDraw(unsigned int options_draw_cursor)
308 /* Port specific Options menu entrys */
311 void VID_ExtraOptionCmd(int option_cursor)
314 switch(option_cursor)
316 case 12: // Always start with 12
322 void VID_SetCaption (char *text)
326 void VID_HandlePause (qboolean pause)