rewrote memory system entirely (hunk, cache, and zone are gone, memory pools replaced...
[xonotic/darkplaces.git] / 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 float           gldepthmin, gldepthmax;
61
62 const char *gl_vendor;
63 const char *gl_renderer;
64 const char *gl_version;
65 const char *gl_extensions;
66
67 /*-----------------------------------------------------------------------*/
68 void D_BeginDirectRect (int x, int y, byte *pbitmap, int width, int height)
69 {
70 }
71
72 void D_EndDirectRect (int x, int y, int width, int height)
73 {
74 }
75
76 void VID_Shutdown(void)
77 {
78         if (!fc)
79                 return;
80
81         fxMesaDestroyContext(fc);
82 }
83
84 void signal_handler(int sig)
85 {
86         printf("Received signal %d, exiting...\n", sig);
87         Host_Shutdown();
88         abort();
89         //Sys_Quit();
90         exit(0);
91 }
92
93 void InitSig(void)
94 {
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);
105 }
106
107 typedef void (GLAPIENTRY *gl3DfxSetDitherModeEXT_FUNC) (GrDitherMode_t mode);
108
109 void VID_SetupDithering(void)
110 {
111         Con_Printf ("Dithering: ");
112
113         dlhand = dlopen (NULL, RTLD_LAZY);
114
115         if (dlhand == NULL) {
116                 Con_SafePrintf ("unable to set.\n");
117                 return;
118         }
119
120         if (strstr(gl_extensions, "3DFX_set_dither_mode")) {
121                 gl3DfxSetDitherModeEXT_FUNC dither_select = NULL;
122
123                 dither_select = (void *) dlsym(dlhand, "gl3DfxSetDitherModeEXT");
124
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");
131                 } else {
132                         glDisable(GL_DITHER);
133                         Con_Printf ("disabled.\n");
134                 }
135         }
136         dlclose(dlhand);
137         dlhand = NULL;
138 }
139
140 /*
141 =================
142 GL_BeginRendering
143
144 =================
145 */
146 void GL_BeginRendering (int *x, int *y, int *width, int *height)
147 {
148         *x = *y = 0;
149         *width = scr_width;
150         *height = scr_height;
151
152 //    if (!wglMakeCurrent( maindc, baseRC ))
153 //              Sys_Error ("wglMakeCurrent failed");
154
155 //      glViewport (*x, *y, *width, *height);
156 }
157
158
159 void GL_EndRendering (void)
160 {
161         if (!r_render.integer)
162                 return;
163         glFlush();
164         fxMesaSwapBuffers();
165 }
166
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 },
183 #endif
184 #ifdef GR_RESOLUTION_1152x864
185         { 1152, 864,    GR_RESOLUTION_1152x864 },
186 #endif
187 #ifdef GR_RESOLUTION_1280x960
188         { 1280, 960,    GR_RESOLUTION_1280x960 },
189 #endif
190 #ifdef GR_RESOLUTION_1280x1024
191         { 1280, 1024,   GR_RESOLUTION_1280x1024 },
192 #endif
193 #ifdef GR_RESOLUTION_1600x1024
194         { 1600, 1024,   GR_RESOLUTION_1600x1024 },
195 #endif
196 #ifdef GR_RESOLUTION_1600x1200
197         { 1600, 1200,   GR_RESOLUTION_1600x1200 },
198 #endif
199 #ifdef GR_RESOLUTION_1792x1344
200         { 1792, 1344,   GR_RESOLUTION_1792x1344 },
201 #endif
202 #ifdef GR_RESOLUTION_1856x1392
203         { 1856, 1392,   GR_RESOLUTION_1856x1392 },
204 #endif
205 #ifdef GR_RESOLUTION_1920x1440
206         { 1920, 1440,   GR_RESOLUTION_1920x1440 },
207 #endif
208 #ifdef GR_RESOLUTION_2048x1536
209         { 2048, 1536,   GR_RESOLUTION_2048x1536 },
210 #endif
211 #ifdef GR_RESOLUTION_2048x2048
212         { 2048, 2048,   GR_RESOLUTION_2048x2048 }
213 #endif
214 };
215
216 #define NUM_RESOLUTIONS         (sizeof(resolutions)/(sizeof(int)*3))
217
218
219 static int
220 findres(int *width, int *height)
221 {
222         int i;
223
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];
230                 }
231         }
232
233         *width = 640;
234         *height = 480;
235         return GR_RESOLUTION_640x480;
236 }
237
238 int VID_SetGamma(float prescale, float gamma, float scale, float base)
239 {
240         return FALSE;
241 }
242
243 void VID_Init(void)
244 {
245         int i;
246         GLint attribs[32];
247         int width = 640, height = 480;
248
249 // set vid parameters
250         attribs[0] = FXMESA_DOUBLEBUFFER;
251         attribs[1] = FXMESA_ALPHA_SIZE;
252         attribs[2] = 1;
253         attribs[3] = FXMESA_DEPTH_SIZE;
254         attribs[4] = 1;
255         attribs[5] = FXMESA_NONE;
256
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]);
261
262         if ((i = COM_CheckParm("-conwidth")) != 0)
263                 vid.conwidth = atoi(com_argv[i+1]);
264         else
265                 vid.conwidth = 640;
266
267         vid.conwidth &= 0xfff8; // make it a multiple of eight
268
269         if (vid.conwidth < 320)
270                 vid.conwidth = 320;
271
272         // pick a conheight that matches with correct aspect
273         vid.conheight = vid.conwidth*3 / 4;
274
275         if ((i = COM_CheckParm("-conheight")) != 0)
276                 vid.conheight = atoi(com_argv[i+1]);
277         if (vid.conheight < 200)
278                 vid.conheight = 200;
279
280         fc = fxMesaCreateContext(0, findres(&width, &height), GR_REFRESH_75Hz,
281                 attribs);
282         if (!fc)
283                 Sys_Error("Unable to create 3DFX context.\n");
284
285         scr_width = width;
286         scr_height = height;
287
288         fxMesaMakeCurrent(fc);
289
290         if (vid.conheight > height)
291                 vid.conheight = height;
292         if (vid.conwidth > width)
293                 vid.conwidth = width;
294
295         InitSig(); // trap evil signals
296
297         GL_Init();
298
299         VID_SetupDithering(); // 3DFX specific
300
301         Con_SafePrintf ("Video mode %dx%d initialized.\n", width, height);
302
303 //      vid.recalc_refdef = 1;                          // force a surface cache flush
304 }
305
306 void VID_ExtraOptionDraw(unsigned int options_draw_cursor)
307 {
308 /* Port specific Options menu entrys */
309 }
310
311 void VID_ExtraOptionCmd(int option_cursor)
312 {
313 /*
314         switch(option_cursor)
315         {
316         case 12:  // Always start with 12
317         break;
318         }
319 */
320 }
321
322 void VID_SetCaption (char *text)
323 {
324 }
325
326 void VID_HandlePause (qboolean pause)
327 {
328 }