need to include quakedef.h later in the other vid_ files too. Damn glquake.h.
[divverent/darkplaces.git] / vid_sdl.c
1 /*
2 Copyright (C) 2003  T. Joseph Carter
3
4 This program is free software; you can redistribute it and/or
5 modify it under the terms of the GNU General Public License
6 as published by the Free Software Foundation; either version 2
7 of the License, or (at your option) any later version.
8
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
12
13 See the GNU General Public License for more details.
14
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
18 */
19 #undef WIN32_LEAN_AND_MEAN  //hush a warning, SDL.h redefines this
20 #include <SDL.h>
21 #include <stdio.h>
22
23 #include "quakedef.h"
24
25 // Tell startup code that we have a client
26 int cl_available = true;
27
28 qboolean vid_supportrefreshrate = false;
29
30 cvar_t joy_detected = {CVAR_READONLY, "joy_detected", "0", "number of joysticks detected by engine"};
31 cvar_t joy_enable = {0, "joy_enable", "1", "enables joystick support"};
32 cvar_t joy_index = {0, "joy_index", "0", "selects which joystick to use if you have multiple"};
33 cvar_t joy_axisforward = {0, "joy_axisforward", "1", "which joystick axis to query for forward/backward movement"};
34 cvar_t joy_axisside = {0, "joy_axisside", "0", "which joystick axis to query for right/left movement"};
35 cvar_t joy_axisup = {0, "joy_axisup", "-1", "which joystick axis to query for up/down movement"};
36 cvar_t joy_axispitch = {0, "joy_axispitch", "3", "which joystick axis to query for looking up/down"};
37 cvar_t joy_axisyaw = {0, "joy_axisyaw", "2", "which joystick axis to query for looking right/left"};
38 cvar_t joy_axisroll = {0, "joy_axisroll", "-1", "which joystick axis to query for tilting head right/left"};
39 cvar_t joy_deadzoneforward = {0, "joy_deadzoneforward", "0", "deadzone tolerance, suggested values are in the range 0 to 0.01"};
40 cvar_t joy_deadzoneside = {0, "joy_deadzoneside", "0", "deadzone tolerance, suggested values are in the range 0 to 0.01"};
41 cvar_t joy_deadzoneup = {0, "joy_deadzoneup", "0", "deadzone tolerance, suggested values are in the range 0 to 0.01"};
42 cvar_t joy_deadzonepitch = {0, "joy_deadzonepitch", "0", "deadzone tolerance, suggested values are in the range 0 to 0.01"};
43 cvar_t joy_deadzoneyaw = {0, "joy_deadzoneyaw", "0", "deadzone tolerance, suggested values are in the range 0 to 0.01"};
44 cvar_t joy_deadzoneroll = {0, "joy_deadzoneroll", "0", "deadzone tolerance, suggested values are in the range 0 to 0.01"};
45 cvar_t joy_sensitivityforward = {0, "joy_sensitivityforward", "-1", "movement multiplier"};
46 cvar_t joy_sensitivityside = {0, "joy_sensitivityside", "1", "movement multiplier"};
47 cvar_t joy_sensitivityup = {0, "joy_sensitivityup", "1", "movement multiplier"};
48 cvar_t joy_sensitivitypitch = {0, "joy_sensitivitypitch", "1", "movement multiplier"};
49 cvar_t joy_sensitivityyaw = {0, "joy_sensitivityyaw", "-1", "movement multiplier"};
50 cvar_t joy_sensitivityroll = {0, "joy_sensitivityroll", "1", "movement multiplier"};
51
52 static qboolean vid_usingmouse;
53 static qboolean vid_isfullscreen;
54 static int vid_numjoysticks = 0;
55 #define MAX_JOYSTICKS 8
56 static SDL_Joystick *vid_joysticks[MAX_JOYSTICKS];
57
58 static int win_half_width = 50;
59 static int win_half_height = 50;
60 static int video_bpp, video_flags;
61
62 static SDL_Surface *screen;
63
64 /////////////////////////
65 // Input handling
66 ////
67 //TODO: Add joystick support
68 //TODO: Add error checking
69
70
71 //keysym to quake keysym mapping
72 #define tenoh   0,0,0,0,0, 0,0,0,0,0
73 #define fiftyoh tenoh, tenoh, tenoh, tenoh, tenoh
74 #define hundredoh fiftyoh, fiftyoh
75 static unsigned int tbl_sdltoquake[] =
76 {
77         0,0,0,0,                //SDLK_UNKNOWN          = 0,
78         0,0,0,0,                //SDLK_FIRST            = 0,
79         K_BACKSPACE,    //SDLK_BACKSPACE        = 8,
80         K_TAB,                  //SDLK_TAB                      = 9,
81         0,0,
82         0,                              //SDLK_CLEAR            = 12,
83         K_ENTER,                //SDLK_RETURN           = 13,
84     0,0,0,0,0,
85         K_PAUSE,                //SDLK_PAUSE            = 19,
86         0,0,0,0,0,0,0,
87         K_ESCAPE,               //SDLK_ESCAPE           = 27,
88         0,0,0,0,
89         K_SPACE,                //SDLK_SPACE            = 32,
90         '!',                    //SDLK_EXCLAIM          = 33,
91         '"',                    //SDLK_QUOTEDBL         = 34,
92         '#',                    //SDLK_HASH                     = 35,
93         '$',                    //SDLK_DOLLAR           = 36,
94         0,
95         '&',                    //SDLK_AMPERSAND        = 38,
96         '\'',                   //SDLK_QUOTE            = 39,
97         '(',                    //SDLK_LEFTPAREN        = 40,
98         ')',                    //SDLK_RIGHTPAREN       = 41,
99         '*',                    //SDLK_ASTERISK         = 42,
100         '+',                    //SDLK_PLUS                     = 43,
101         ',',                    //SDLK_COMMA            = 44,
102         '-',                    //SDLK_MINUS            = 45,
103         '.',                    //SDLK_PERIOD           = 46,
104         '/',                    //SDLK_SLASH            = 47,
105         '0',                    //SDLK_0                        = 48,
106         '1',                    //SDLK_1                        = 49,
107         '2',                    //SDLK_2                        = 50,
108         '3',                    //SDLK_3                        = 51,
109         '4',                    //SDLK_4                        = 52,
110         '5',                    //SDLK_5                        = 53,
111         '6',                    //SDLK_6                        = 54,
112         '7',                    //SDLK_7                        = 55,
113         '8',                    //SDLK_8                        = 56,
114         '9',                    //SDLK_9                        = 57,
115         ':',                    //SDLK_COLON            = 58,
116         ';',                    //SDLK_SEMICOLON        = 59,
117         '<',                    //SDLK_LESS                     = 60,
118         '=',                    //SDLK_EQUALS           = 61,
119         '>',                    //SDLK_GREATER          = 62,
120         '?',                    //SDLK_QUESTION         = 63,
121         '@',                    //SDLK_AT                       = 64,
122         0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
123         '[',            //SDLK_LEFTBRACKET      = 91,
124         '\\',           //SDLK_BACKSLASH        = 92,
125         ']',            //SDLK_RIGHTBRACKET     = 93,
126         '^',            //SDLK_CARET            = 94,
127         '_',            //SDLK_UNDERSCORE       = 95,
128         '`',            //SDLK_BACKQUOTE        = 96,
129         'a',            //SDLK_a                        = 97,
130         'b',            //SDLK_b                        = 98,
131         'c',            //SDLK_c                        = 99,
132         'd',            //SDLK_d                        = 100,
133         'e',            //SDLK_e                        = 101,
134         'f',            //SDLK_f                        = 102,
135         'g',            //SDLK_g                        = 103,
136         'h',            //SDLK_h                        = 104,
137         'i',            //SDLK_i                        = 105,
138         'j',            //SDLK_j                        = 106,
139         'k',            //SDLK_k                        = 107,
140         'l',            //SDLK_l                        = 108,
141         'm',            //SDLK_m                        = 109,
142         'n',            //SDLK_n                        = 110,
143         'o',            //SDLK_o                        = 111,
144         'p',            //SDLK_p                        = 112,
145         'q',            //SDLK_q                        = 113,
146         'r',            //SDLK_r                        = 114,
147         's',            //SDLK_s                        = 115,
148         't',            //SDLK_t                        = 116,
149         'u',            //SDLK_u                        = 117,
150         'v',            //SDLK_v                        = 118,
151         'w',            //SDLK_w                        = 119,
152         'x',            //SDLK_x                        = 120,
153         'y',            //SDLK_y                        = 121,
154         'z',            //SDLK_z                        = 122,
155         0,0,0,0,
156         K_DEL,          //SDLK_DELETE           = 127,
157         hundredoh /*227*/, tenoh, tenoh, 0,0,0,0,0,0,0,0,
158         K_KP_0,         //SDLK_KP0              = 256,
159         K_KP_1,         //SDLK_KP1              = 257,
160         K_KP_2,         //SDLK_KP2              = 258,
161         K_KP_3,         //SDLK_KP3              = 259,
162         K_KP_4,         //SDLK_KP4              = 260,
163         K_KP_5,         //SDLK_KP5              = 261,
164         K_KP_6,         //SDLK_KP6              = 262,
165         K_KP_7,         //SDLK_KP7              = 263,
166         K_KP_8,         //SDLK_KP8              = 264,
167         K_KP_9,         //SDLK_KP9              = 265,
168         K_KP_PERIOD,//SDLK_KP_PERIOD    = 266,
169         K_KP_DIVIDE,//SDLK_KP_DIVIDE    = 267,
170         K_KP_MULTIPLY,//SDLK_KP_MULTIPLY= 268,
171         K_KP_MINUS,     //SDLK_KP_MINUS         = 269,
172         K_KP_PLUS,      //SDLK_KP_PLUS          = 270,
173         K_KP_ENTER,     //SDLK_KP_ENTER         = 271,
174         K_KP_EQUALS,//SDLK_KP_EQUALS    = 272,
175         K_UPARROW,      //SDLK_UP               = 273,
176         K_DOWNARROW,//SDLK_DOWN         = 274,
177         K_RIGHTARROW,//SDLK_RIGHT       = 275,
178         K_LEFTARROW,//SDLK_LEFT         = 276,
179         K_INS,          //SDLK_INSERT   = 277,
180         K_HOME,         //SDLK_HOME             = 278,
181         K_END,          //SDLK_END              = 279,
182         K_PGUP,         //SDLK_PAGEUP   = 280,
183         K_PGDN,         //SDLK_PAGEDOWN = 281,
184         K_F1,           //SDLK_F1               = 282,
185         K_F2,           //SDLK_F2               = 283,
186         K_F3,           //SDLK_F3               = 284,
187         K_F4,           //SDLK_F4               = 285,
188         K_F5,           //SDLK_F5               = 286,
189         K_F6,           //SDLK_F6               = 287,
190         K_F7,           //SDLK_F7               = 288,
191         K_F8,           //SDLK_F8               = 289,
192         K_F9,           //SDLK_F9               = 290,
193         K_F10,          //SDLK_F10              = 291,
194         K_F11,          //SDLK_F11              = 292,
195         K_F12,          //SDLK_F12              = 293,
196         0,                      //SDLK_F13              = 294,
197         0,                      //SDLK_F14              = 295,
198         0,                      //SDLK_F15              = 296,
199         0,0,0,
200         K_NUMLOCK,      //SDLK_NUMLOCK  = 300,
201         K_CAPSLOCK,     //SDLK_CAPSLOCK = 301,
202         K_SCROLLOCK,//SDLK_SCROLLOCK= 302,
203         K_SHIFT,        //SDLK_RSHIFT   = 303,
204         K_SHIFT,        //SDLK_LSHIFT   = 304,
205         K_CTRL,         //SDLK_RCTRL    = 305,
206         K_CTRL,         //SDLK_LCTRL    = 306,
207         K_ALT,          //SDLK_RALT             = 307,
208         K_ALT,          //SDLK_LALT             = 308,
209         0,                      //SDLK_RMETA    = 309,
210         0,                      //SDLK_LMETA    = 310,
211         0,                      //SDLK_LSUPER   = 311,          /* Left "Windows" key */
212         0,                      //SDLK_RSUPER   = 312,          /* Right "Windows" key */
213         K_ALT,                  //SDLK_MODE             = 313,          /* "Alt Gr" key */
214         0,                      //SDLK_COMPOSE  = 314,          /* Multi-key compose key */
215         0,                      //SDLK_HELP             = 315,
216         0,                      //SDLK_PRINT    = 316,
217         0,                      //SDLK_SYSREQ   = 317,
218         K_PAUSE,        //SDLK_BREAK    = 318,
219         0,                      //SDLK_MENU             = 319,
220         0,                      //SDLK_POWER    = 320,          /* Power Macintosh power key */
221         'e',            //SDLK_EURO             = 321,          /* Some european keyboards */
222         0                       //SDLK_UNDO             = 322,          /* Atari keyboard has Undo */
223 };
224 #undef tenoh
225 #undef fiftyoh
226 #undef hundredoh
227
228 static int MapKey( unsigned int sdlkey )
229 {
230         if( sdlkey > sizeof(tbl_sdltoquake)/ sizeof(int) )
231                 return 0;
232     return tbl_sdltoquake[ sdlkey ];
233 }
234
235 static void IN_Activate( qboolean grab )
236 {
237         //SDL_WM_GrabInput( SDL_GRAB_OFF );
238         //Con_Printf("< Turning off input-grabbing. --blub\n");
239         if (grab)
240         {
241                 if (!vid_usingmouse)
242                 {
243                         vid_usingmouse = true;
244                         cl_ignoremousemove = true;
245                         if(vid_grabkeyboard.integer) {
246                                 SDL_WM_GrabInput( SDL_GRAB_ON );
247                         }
248                         SDL_ShowCursor( SDL_DISABLE );
249                 }               
250         }
251         else
252         {
253                 if (vid_usingmouse)
254                 {
255                         vid_usingmouse = false;
256                         cl_ignoremousemove = true;
257                         if(vid_grabkeyboard.integer) {
258                                 SDL_WM_GrabInput( SDL_GRAB_OFF );
259                         }
260                         SDL_ShowCursor( SDL_ENABLE );
261                 }
262         }
263 }
264
265 static double IN_JoystickGetAxis(SDL_Joystick *joy, int axis, double sensitivity, double deadzone)
266 {
267         double value;
268         if (axis < 0 || axis >= SDL_JoystickNumAxes(joy))
269                 return 0; // no such axis on this joystick
270         value = SDL_JoystickGetAxis(joy, axis) * (1.0 / 32767.0);
271         value = bound(-1, value, 1);
272         if (fabs(value) < deadzone)
273                 return 0; // within deadzone around center
274         return value * sensitivity;
275 }
276
277 void IN_Move( void )
278 {
279         int j;
280         static int old_x = 0, old_y = 0;
281         static int stuck = 0;
282         int x, y;
283         if( vid_usingmouse )
284         {
285                 if(vid_stick_mouse.integer)
286                 {
287                         // have the mouse stuck in the middle, example use: prevent expose effect of beryl during the game when not using
288                         // window grabbing. --blub
289                         
290                         // we need 2 frames to initialize the center position
291                         if(!stuck)
292                         {
293                                 SDL_WarpMouse(win_half_width, win_half_height);
294                                 SDL_GetMouseState(&x, &y);
295                                 SDL_GetRelativeMouseState(&x, &y);
296                                 ++stuck;
297                         } else {
298                                 SDL_GetRelativeMouseState(&x, &y);
299                                 in_mouse_x = x + old_x;
300                                 in_mouse_y = y + old_y;
301                                 SDL_GetMouseState(&x, &y);
302                                 old_x = x - win_half_width;
303                                 old_y = y - win_half_height;
304                                 SDL_WarpMouse(win_half_width, win_half_height);
305                         }
306                 } else {
307                         SDL_GetRelativeMouseState( &x, &y );
308                         in_mouse_x = x;
309                         in_mouse_y = y;
310                 }
311         }
312         if (vid_numjoysticks && joy_enable.integer && joy_index.integer >= 0 && joy_index.integer < vid_numjoysticks)
313         {
314                 SDL_Joystick *joy = vid_joysticks[joy_index.integer];
315                 int numballs = SDL_JoystickNumBalls(joy);
316                 for (j = 0;j < numballs;j++)
317                 {
318                         SDL_JoystickGetBall(joy, j, &x, &y);
319                         in_mouse_x += x;
320                         in_mouse_y += y;
321                 }
322                 cl.cmd.forwardmove += IN_JoystickGetAxis(joy, joy_axisforward.integer, joy_sensitivityforward.value, joy_deadzoneforward.value) * cl_forwardspeed.value;
323                 cl.cmd.sidemove    += IN_JoystickGetAxis(joy, joy_axisside.integer, joy_sensitivityside.value, joy_deadzoneside.value) * cl_sidespeed.value;
324                 cl.cmd.upmove      += IN_JoystickGetAxis(joy, joy_axisup.integer, joy_sensitivityup.value, joy_deadzoneup.value) * cl_upspeed.value;
325                 cl.viewangles[0]   += IN_JoystickGetAxis(joy, joy_axispitch.integer, joy_sensitivitypitch.value, joy_deadzonepitch.value) * cl.realframetime * cl_pitchspeed.value;
326                 cl.viewangles[1]   += IN_JoystickGetAxis(joy, joy_axisyaw.integer, joy_sensitivityyaw.value, joy_deadzoneyaw.value) * cl.realframetime * cl_yawspeed.value;
327                 //cl.viewangles[2]   += IN_JoystickGetAxis(joy, joy_axisroll.integer, joy_sensitivityroll.value, joy_deadzoneroll.value) * cl.realframetime * cl_rollspeed.value;
328         }
329 }
330
331 /////////////////////
332 // Message Handling
333 ////
334
335 static int Sys_EventFilter( SDL_Event *event )
336 {
337         //TODO: Add a quit query in linux, too - though linux user are more likely to know what they do
338 #ifdef WIN32
339         if( event->type == SDL_QUIT && MessageBox( NULL, "Are you sure you want to quit?", "Confirm Exit", MB_YESNO | MB_SETFOREGROUND | MB_ICONQUESTION ) == IDNO )
340                 return 0;
341         else
342                 return 1;
343 #else
344         return 1;
345 #endif
346 }
347
348 static keynum_t buttonremap[18] =
349 {
350         K_MOUSE1,
351         K_MOUSE3,
352         K_MOUSE2,
353         K_MWHEELUP,
354         K_MWHEELDOWN,
355         K_MOUSE4,
356         K_MOUSE5,
357         K_MOUSE6,
358         K_MOUSE7,
359         K_MOUSE8,
360         K_MOUSE9,
361         K_MOUSE10,
362         K_MOUSE11,
363         K_MOUSE12,
364         K_MOUSE13,
365         K_MOUSE14,
366         K_MOUSE15,
367         K_MOUSE16,
368 };
369
370 void Sys_SendKeyEvents( void )
371 {
372         static qboolean sound_active = true;
373         SDL_Event event;
374
375         while( SDL_PollEvent( &event ) )
376                 switch( event.type ) {
377                         case SDL_QUIT:
378                                 Sys_Quit(0);
379                                 break;
380                         case SDL_KEYDOWN:
381                         case SDL_KEYUP:
382                                 Key_Event( MapKey( event.key.keysym.sym ), (char)event.key.keysym.unicode, (event.key.state == SDL_PRESSED) );
383                                 break;
384                         case SDL_ACTIVEEVENT:
385                                 if( event.active.state == SDL_APPACTIVE )
386                                 {
387                                         if( event.active.gain )
388                                                 vid_hidden = false;
389                                         else
390                                                 vid_hidden = true;
391                                 }
392                                 break;
393                         case SDL_MOUSEBUTTONDOWN:
394                         case SDL_MOUSEBUTTONUP:
395                                 if (event.button.button <= 18)
396                                         Key_Event( buttonremap[event.button.button - 1], 0, event.button.state == SDL_PRESSED );
397                                 break;
398                         case SDL_JOYBUTTONDOWN:
399                                 if (!joy_enable.integer)
400                                         break; // ignore down events if joystick has been disabled
401                         case SDL_JOYBUTTONUP:
402                                 if (event.jbutton.button < 48)
403                                         Key_Event( event.jbutton.button + (event.jbutton.button < 16 ? K_JOY1 : K_AUX1 - 16), 0, (event.jbutton.state == SDL_PRESSED) );
404                                 break;
405                         case SDL_VIDEORESIZE:
406                                 if(vid_resizable.integer < 2)
407                                 {
408                                         vid.width = event.resize.w;
409                                         vid.height = event.resize.h;
410                                         SDL_SetVideoMode(vid.width, vid.height, video_bpp, video_flags);
411                                 }
412                                 break;
413                 }
414
415         // enable/disable sound on focus gain/loss
416         if (!vid_hidden && (vid_activewindow || !snd_mutewhenidle.integer))
417         {
418                 if (!sound_active)
419                 {
420                         S_UnblockSound ();
421                         sound_active = true;
422                 }
423         }
424         else
425         {
426                 if (sound_active)
427                 {
428                         S_BlockSound ();
429                         sound_active = false;
430                 }
431         }
432 }
433
434 /////////////////
435 // Video system
436 ////
437
438 void *GL_GetProcAddress(const char *name)
439 {
440         void *p = NULL;
441         p = SDL_GL_GetProcAddress(name);
442         return p;
443 }
444
445 static int Sys_EventFilter( SDL_Event *event );
446 static qboolean vid_sdl_initjoysticksystem = false;
447 void VID_Init (void)
448 {
449         Cvar_RegisterVariable(&joy_detected);
450         Cvar_RegisterVariable(&joy_enable);
451         Cvar_RegisterVariable(&joy_index);
452         Cvar_RegisterVariable(&joy_axisforward);
453         Cvar_RegisterVariable(&joy_axisside);
454         Cvar_RegisterVariable(&joy_axisup);
455         Cvar_RegisterVariable(&joy_axispitch);
456         Cvar_RegisterVariable(&joy_axisyaw);
457         //Cvar_RegisterVariable(&joy_axisroll);
458         Cvar_RegisterVariable(&joy_deadzoneforward);
459         Cvar_RegisterVariable(&joy_deadzoneside);
460         Cvar_RegisterVariable(&joy_deadzoneup);
461         Cvar_RegisterVariable(&joy_deadzonepitch);
462         Cvar_RegisterVariable(&joy_deadzoneyaw);
463         //Cvar_RegisterVariable(&joy_deadzoneroll);
464         Cvar_RegisterVariable(&joy_sensitivityforward);
465         Cvar_RegisterVariable(&joy_sensitivityside);
466         Cvar_RegisterVariable(&joy_sensitivityup);
467         Cvar_RegisterVariable(&joy_sensitivitypitch);
468         Cvar_RegisterVariable(&joy_sensitivityyaw);
469         //Cvar_RegisterVariable(&joy_sensitivityroll);
470
471         if (SDL_Init(SDL_INIT_VIDEO) < 0)
472                 Sys_Error ("Failed to init SDL video subsystem: %s", SDL_GetError());
473         vid_sdl_initjoysticksystem = SDL_Init(SDL_INIT_JOYSTICK) >= 0;
474         if (vid_sdl_initjoysticksystem)
475                 Con_Printf("Failed to init SDL joystick subsystem: %s\n", SDL_GetError());
476         vid_isfullscreen = false;
477 }
478
479 // set the icon (we dont use SDL here since it would be too much a PITA)
480 #ifdef WIN32
481 #include "resource.h"
482 #include <SDL_syswm.h>
483 static void VID_SetCaption()
484 {
485     SDL_SysWMinfo       info;
486         HICON                   icon;
487
488         // set the caption
489         SDL_WM_SetCaption( gamename, NULL );
490
491         // get the HWND handle
492     SDL_VERSION( &info.version );
493         if( !SDL_GetWMInfo( &info ) )
494                 return;
495
496         icon = LoadIcon( GetModuleHandle( NULL ), MAKEINTRESOURCE( IDI_ICON1 ) );
497 #ifndef _W64 //If Windows 64bit data types don't exist
498 #define SetClassLongPtr SetClassLong
499 #define GCLP_HICON GCL_HICON
500 #define LONG_PTR LONG
501 #endif
502         SetClassLongPtr( info.window, GCLP_HICON, (LONG_PTR)icon );
503 }
504 #else
505 static void VID_SetCaption()
506 {
507         SDL_WM_SetCaption( gamename, NULL );
508 }
509 #endif
510
511 static void VID_OutputVersion()
512 {
513         const SDL_version *version;
514         version = SDL_Linked_Version();
515         Con_Printf(     "Linked against SDL version %d.%d.%d\n"
516                                         "Using SDL library version %d.%d.%d\n",
517                                         SDL_MAJOR_VERSION, SDL_MINOR_VERSION, SDL_PATCHLEVEL,
518                                         version->major, version->minor, version->patch );
519 }
520
521 int VID_InitMode(int fullscreen, int width, int height, int bpp, int refreshrate, int stereobuffer)
522 {
523         int i;
524         static int notfirstvideomode = false;
525         int flags = SDL_OPENGL;
526         const char *drivername;
527
528         win_half_width = width>>1;
529         win_half_height = height>>1;
530
531         if(vid_resizable.integer)
532                 flags |= SDL_RESIZABLE;
533
534         VID_OutputVersion();
535
536         /*
537         SDL Hack
538                 We cant switch from one OpenGL video mode to another.
539                 Thus we first switch to some stupid 2D mode and then back to OpenGL.
540         */
541         if (notfirstvideomode)
542                 SDL_SetVideoMode( 0, 0, 0, 0 );
543         notfirstvideomode = true;
544
545         // SDL usually knows best
546         drivername = NULL;
547
548 // COMMANDLINEOPTION: SDL GL: -gl_driver <drivername> selects a GL driver library, default is whatever SDL recommends, useful only for 3dfxogl.dll/3dfxvgl.dll or fxmesa or similar, if you don't know what this is for, you don't need it
549         i = COM_CheckParm("-gl_driver");
550         if (i && i < com_argc - 1)
551                 drivername = com_argv[i + 1];
552         if (SDL_GL_LoadLibrary(drivername) < 0)
553         {
554                 Con_Printf("Unable to load GL driver \"%s\": %s\n", drivername, SDL_GetError());
555                 return false;
556         }
557         
558         if ((qglGetString = (const GLubyte* (GLAPIENTRY *)(GLenum name))GL_GetProcAddress("glGetString")) == NULL)
559         {
560                 VID_Shutdown();
561                 Con_Print("Required OpenGL function glGetString not found\n");
562                 return false;
563         }
564
565         // Knghtbrd: should do platform-specific extension string function here
566
567         vid_isfullscreen = false;
568         if (fullscreen) {
569                 flags |= SDL_FULLSCREEN;
570                 vid_isfullscreen = true;
571         }
572         //flags |= SDL_HWSURFACE;
573
574         SDL_GL_SetAttribute (SDL_GL_DOUBLEBUFFER, 1);
575         if (bpp >= 32)
576         {
577                 SDL_GL_SetAttribute (SDL_GL_RED_SIZE, 8);
578                 SDL_GL_SetAttribute (SDL_GL_GREEN_SIZE, 8);
579                 SDL_GL_SetAttribute (SDL_GL_BLUE_SIZE, 8);
580                 SDL_GL_SetAttribute (SDL_GL_ALPHA_SIZE, 8);
581                 SDL_GL_SetAttribute (SDL_GL_DEPTH_SIZE, 24);
582                 SDL_GL_SetAttribute (SDL_GL_STENCIL_SIZE, 8);
583         }
584         else
585         {
586                 SDL_GL_SetAttribute (SDL_GL_RED_SIZE, 1);
587                 SDL_GL_SetAttribute (SDL_GL_GREEN_SIZE, 1);
588                 SDL_GL_SetAttribute (SDL_GL_BLUE_SIZE, 1);
589                 SDL_GL_SetAttribute (SDL_GL_DEPTH_SIZE, 16);
590         }
591         if (stereobuffer)
592                 SDL_GL_SetAttribute (SDL_GL_STEREO, 1);
593
594         video_bpp = bpp;
595         video_flags = flags;
596         screen = SDL_SetVideoMode(width, height, bpp, flags);
597         
598         if (screen == NULL)
599         {
600                 Con_Printf("Failed to set video mode to %ix%i: %s\n", width, height, SDL_GetError());
601                 VID_Shutdown();
602                 return false;
603         }
604
605         // set window title
606         VID_SetCaption();
607         // set up an event filter to ask confirmation on close button in WIN32
608         SDL_SetEventFilter( (SDL_EventFilter) Sys_EventFilter );
609         // init keyboard
610         SDL_EnableUNICODE( SDL_ENABLE );
611         // enable key repeat since everyone expects it
612         SDL_EnableKeyRepeat(SDL_DEFAULT_REPEAT_DELAY, SDL_DEFAULT_REPEAT_INTERVAL);
613
614         gl_renderer = (const char *)qglGetString(GL_RENDERER);
615         gl_vendor = (const char *)qglGetString(GL_VENDOR);
616         gl_version = (const char *)qglGetString(GL_VERSION);
617         gl_extensions = (const char *)qglGetString(GL_EXTENSIONS);
618         gl_platform = "SDL";
619         // Knghtbrd: should assign platform-specific extensions here
620         //TODO: maybe ;)
621         gl_platformextensions = "";
622         gl_videosyncavailable = false;
623
624         GL_Init();
625
626         vid_numjoysticks = SDL_NumJoysticks();
627         vid_numjoysticks = bound(0, vid_numjoysticks, MAX_JOYSTICKS);
628         Cvar_SetValueQuick(&joy_detected, vid_numjoysticks);
629         Con_Printf("%d SDL joystick(s) found:\n", vid_numjoysticks);
630         memset(vid_joysticks, 0, sizeof(vid_joysticks));
631         for (i = 0;i < vid_numjoysticks;i++)
632         {
633                 SDL_Joystick *joy;
634                 joy = vid_joysticks[i] = SDL_JoystickOpen(i);
635                 if (!joy)
636                 {
637                         Con_Printf("joystick #%i: open failed: %s\n", i, SDL_GetError());
638                         continue;
639                 }
640                 Con_Printf("joystick #%i: opened \"%s\" with %i axes, %i buttons, %i balls\n", i, SDL_JoystickName(i), (int)SDL_JoystickNumAxes(joy), (int)SDL_JoystickNumButtons(joy), (int)SDL_JoystickNumBalls(joy));
641         }
642
643         vid_hidden = false;
644         vid_activewindow = false;
645         vid_usingmouse = false;
646
647         if(!vid_grabkeyboard.integer)
648                 SDL_WM_GrabInput(SDL_GRAB_OFF);
649         return true;
650 }
651
652 void VID_Shutdown (void)
653 {
654         // this is needed to retry gamma after a vid_restart
655         VID_RestoreSystemGamma();
656
657         IN_Activate(false);
658         SDL_QuitSubSystem(SDL_INIT_VIDEO);
659 }
660
661 int VID_SetGamma (unsigned short *ramps, int rampsize)
662 {
663         return !SDL_SetGammaRamp (ramps, ramps + rampsize, ramps + rampsize*2);
664 }
665
666 int VID_GetGamma (unsigned short *ramps, int rampsize)
667 {
668         return !SDL_GetGammaRamp (ramps, ramps + rampsize, ramps + rampsize*2);
669 }
670
671 void VID_Finish (qboolean allowmousegrab)
672 {
673         Uint8 appstate;
674         qboolean vid_usemouse;
675
676         //react on appstate changes
677         appstate = SDL_GetAppState();
678
679         vid_hidden = !(appstate & SDL_APPACTIVE);
680
681         if( vid_hidden || !( appstate & SDL_APPMOUSEFOCUS ) || !( appstate & SDL_APPINPUTFOCUS ) )
682                 vid_activewindow = false;
683         else
684                 vid_activewindow = true;
685
686         vid_usemouse = false;
687         if( allowmousegrab && vid_mouse.integer && !key_consoleactive && (key_dest != key_game || !cls.demoplayback) )
688                 vid_usemouse = true;
689         if( vid_isfullscreen )
690                 vid_usemouse = true;
691         if( !vid_activewindow )
692                 vid_usemouse = false;
693
694         IN_Activate(vid_usemouse);
695
696         VID_UpdateGamma(false, 256);
697
698         if (r_render.integer && !vid_hidden)
699         {
700                 CHECKGLERROR
701                 if (r_speeds.integer || gl_finish.integer)
702                 {
703                         qglFinish();CHECKGLERROR
704                 }
705                 SDL_GL_SwapBuffers();
706         }
707 }