implemented occlusion query support on corona rendering, this enables
[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 = {CVAR_SAVE, "joy_enable", "0", "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 = false;
53 static qboolean vid_usinghidecursor = false;
54 static qboolean vid_isfullscreen;
55 static int vid_numjoysticks = 0;
56 #define MAX_JOYSTICKS 8
57 static SDL_Joystick *vid_joysticks[MAX_JOYSTICKS];
58
59 static int win_half_width = 50;
60 static int win_half_height = 50;
61 static int video_bpp, video_flags;
62
63 static SDL_Surface *screen;
64
65 /////////////////////////
66 // Input handling
67 ////
68 //TODO: Add joystick support
69 //TODO: Add error checking
70
71
72 //keysym to quake keysym mapping
73 #define tenoh   0,0,0,0,0, 0,0,0,0,0
74 #define fiftyoh tenoh, tenoh, tenoh, tenoh, tenoh
75 #define hundredoh fiftyoh, fiftyoh
76 static unsigned int tbl_sdltoquake[] =
77 {
78         0,0,0,0,                //SDLK_UNKNOWN          = 0,
79         0,0,0,0,                //SDLK_FIRST            = 0,
80         K_BACKSPACE,    //SDLK_BACKSPACE        = 8,
81         K_TAB,                  //SDLK_TAB                      = 9,
82         0,0,
83         0,                              //SDLK_CLEAR            = 12,
84         K_ENTER,                //SDLK_RETURN           = 13,
85     0,0,0,0,0,
86         K_PAUSE,                //SDLK_PAUSE            = 19,
87         0,0,0,0,0,0,0,
88         K_ESCAPE,               //SDLK_ESCAPE           = 27,
89         0,0,0,0,
90         K_SPACE,                //SDLK_SPACE            = 32,
91         '!',                    //SDLK_EXCLAIM          = 33,
92         '"',                    //SDLK_QUOTEDBL         = 34,
93         '#',                    //SDLK_HASH                     = 35,
94         '$',                    //SDLK_DOLLAR           = 36,
95         0,
96         '&',                    //SDLK_AMPERSAND        = 38,
97         '\'',                   //SDLK_QUOTE            = 39,
98         '(',                    //SDLK_LEFTPAREN        = 40,
99         ')',                    //SDLK_RIGHTPAREN       = 41,
100         '*',                    //SDLK_ASTERISK         = 42,
101         '+',                    //SDLK_PLUS                     = 43,
102         ',',                    //SDLK_COMMA            = 44,
103         '-',                    //SDLK_MINUS            = 45,
104         '.',                    //SDLK_PERIOD           = 46,
105         '/',                    //SDLK_SLASH            = 47,
106         '0',                    //SDLK_0                        = 48,
107         '1',                    //SDLK_1                        = 49,
108         '2',                    //SDLK_2                        = 50,
109         '3',                    //SDLK_3                        = 51,
110         '4',                    //SDLK_4                        = 52,
111         '5',                    //SDLK_5                        = 53,
112         '6',                    //SDLK_6                        = 54,
113         '7',                    //SDLK_7                        = 55,
114         '8',                    //SDLK_8                        = 56,
115         '9',                    //SDLK_9                        = 57,
116         ':',                    //SDLK_COLON            = 58,
117         ';',                    //SDLK_SEMICOLON        = 59,
118         '<',                    //SDLK_LESS                     = 60,
119         '=',                    //SDLK_EQUALS           = 61,
120         '>',                    //SDLK_GREATER          = 62,
121         '?',                    //SDLK_QUESTION         = 63,
122         '@',                    //SDLK_AT                       = 64,
123         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,
124         '[',            //SDLK_LEFTBRACKET      = 91,
125         '\\',           //SDLK_BACKSLASH        = 92,
126         ']',            //SDLK_RIGHTBRACKET     = 93,
127         '^',            //SDLK_CARET            = 94,
128         '_',            //SDLK_UNDERSCORE       = 95,
129         '`',            //SDLK_BACKQUOTE        = 96,
130         'a',            //SDLK_a                        = 97,
131         'b',            //SDLK_b                        = 98,
132         'c',            //SDLK_c                        = 99,
133         'd',            //SDLK_d                        = 100,
134         'e',            //SDLK_e                        = 101,
135         'f',            //SDLK_f                        = 102,
136         'g',            //SDLK_g                        = 103,
137         'h',            //SDLK_h                        = 104,
138         'i',            //SDLK_i                        = 105,
139         'j',            //SDLK_j                        = 106,
140         'k',            //SDLK_k                        = 107,
141         'l',            //SDLK_l                        = 108,
142         'm',            //SDLK_m                        = 109,
143         'n',            //SDLK_n                        = 110,
144         'o',            //SDLK_o                        = 111,
145         'p',            //SDLK_p                        = 112,
146         'q',            //SDLK_q                        = 113,
147         'r',            //SDLK_r                        = 114,
148         's',            //SDLK_s                        = 115,
149         't',            //SDLK_t                        = 116,
150         'u',            //SDLK_u                        = 117,
151         'v',            //SDLK_v                        = 118,
152         'w',            //SDLK_w                        = 119,
153         'x',            //SDLK_x                        = 120,
154         'y',            //SDLK_y                        = 121,
155         'z',            //SDLK_z                        = 122,
156         0,0,0,0,
157         K_DEL,          //SDLK_DELETE           = 127,
158         hundredoh /*227*/, tenoh, tenoh, 0,0,0,0,0,0,0,0,
159         K_KP_0,         //SDLK_KP0              = 256,
160         K_KP_1,         //SDLK_KP1              = 257,
161         K_KP_2,         //SDLK_KP2              = 258,
162         K_KP_3,         //SDLK_KP3              = 259,
163         K_KP_4,         //SDLK_KP4              = 260,
164         K_KP_5,         //SDLK_KP5              = 261,
165         K_KP_6,         //SDLK_KP6              = 262,
166         K_KP_7,         //SDLK_KP7              = 263,
167         K_KP_8,         //SDLK_KP8              = 264,
168         K_KP_9,         //SDLK_KP9              = 265,
169         K_KP_PERIOD,//SDLK_KP_PERIOD    = 266,
170         K_KP_DIVIDE,//SDLK_KP_DIVIDE    = 267,
171         K_KP_MULTIPLY,//SDLK_KP_MULTIPLY= 268,
172         K_KP_MINUS,     //SDLK_KP_MINUS         = 269,
173         K_KP_PLUS,      //SDLK_KP_PLUS          = 270,
174         K_KP_ENTER,     //SDLK_KP_ENTER         = 271,
175         K_KP_EQUALS,//SDLK_KP_EQUALS    = 272,
176         K_UPARROW,      //SDLK_UP               = 273,
177         K_DOWNARROW,//SDLK_DOWN         = 274,
178         K_RIGHTARROW,//SDLK_RIGHT       = 275,
179         K_LEFTARROW,//SDLK_LEFT         = 276,
180         K_INS,          //SDLK_INSERT   = 277,
181         K_HOME,         //SDLK_HOME             = 278,
182         K_END,          //SDLK_END              = 279,
183         K_PGUP,         //SDLK_PAGEUP   = 280,
184         K_PGDN,         //SDLK_PAGEDOWN = 281,
185         K_F1,           //SDLK_F1               = 282,
186         K_F2,           //SDLK_F2               = 283,
187         K_F3,           //SDLK_F3               = 284,
188         K_F4,           //SDLK_F4               = 285,
189         K_F5,           //SDLK_F5               = 286,
190         K_F6,           //SDLK_F6               = 287,
191         K_F7,           //SDLK_F7               = 288,
192         K_F8,           //SDLK_F8               = 289,
193         K_F9,           //SDLK_F9               = 290,
194         K_F10,          //SDLK_F10              = 291,
195         K_F11,          //SDLK_F11              = 292,
196         K_F12,          //SDLK_F12              = 293,
197         0,                      //SDLK_F13              = 294,
198         0,                      //SDLK_F14              = 295,
199         0,                      //SDLK_F15              = 296,
200         0,0,0,
201         K_NUMLOCK,      //SDLK_NUMLOCK  = 300,
202         K_CAPSLOCK,     //SDLK_CAPSLOCK = 301,
203         K_SCROLLOCK,//SDLK_SCROLLOCK= 302,
204         K_SHIFT,        //SDLK_RSHIFT   = 303,
205         K_SHIFT,        //SDLK_LSHIFT   = 304,
206         K_CTRL,         //SDLK_RCTRL    = 305,
207         K_CTRL,         //SDLK_LCTRL    = 306,
208         K_ALT,          //SDLK_RALT             = 307,
209         K_ALT,          //SDLK_LALT             = 308,
210         0,                      //SDLK_RMETA    = 309,
211         0,                      //SDLK_LMETA    = 310,
212         0,                      //SDLK_LSUPER   = 311,          /* Left "Windows" key */
213         0,                      //SDLK_RSUPER   = 312,          /* Right "Windows" key */
214         K_ALT,                  //SDLK_MODE             = 313,          /* "Alt Gr" key */
215         0,                      //SDLK_COMPOSE  = 314,          /* Multi-key compose key */
216         0,                      //SDLK_HELP             = 315,
217         0,                      //SDLK_PRINT    = 316,
218         0,                      //SDLK_SYSREQ   = 317,
219         K_PAUSE,        //SDLK_BREAK    = 318,
220         0,                      //SDLK_MENU             = 319,
221         0,                      //SDLK_POWER    = 320,          /* Power Macintosh power key */
222         'e',            //SDLK_EURO             = 321,          /* Some european keyboards */
223         0                       //SDLK_UNDO             = 322,          /* Atari keyboard has Undo */
224 };
225 #undef tenoh
226 #undef fiftyoh
227 #undef hundredoh
228
229 static int MapKey( unsigned int sdlkey )
230 {
231         if( sdlkey > sizeof(tbl_sdltoquake)/ sizeof(int) )
232                 return 0;
233     return tbl_sdltoquake[ sdlkey ];
234 }
235
236 void VID_SetMouse(qboolean fullscreengrab, qboolean relative, qboolean hidecursor)
237 {
238         if (vid_usingmouse != relative)
239         {
240                 vid_usingmouse = relative;
241                 cl_ignoremousemoves = 2;
242                 SDL_WM_GrabInput( relative ? SDL_GRAB_ON : SDL_GRAB_OFF );
243         }
244         if (vid_usinghidecursor != hidecursor)
245         {
246                 vid_usinghidecursor = hidecursor;
247                 SDL_ShowCursor( hidecursor ? SDL_DISABLE : SDL_ENABLE);
248         }
249 }
250
251 static double IN_JoystickGetAxis(SDL_Joystick *joy, int axis, double sensitivity, double deadzone)
252 {
253         double value;
254         if (axis < 0 || axis >= SDL_JoystickNumAxes(joy))
255                 return 0; // no such axis on this joystick
256         value = SDL_JoystickGetAxis(joy, axis) * (1.0 / 32767.0);
257         value = bound(-1, value, 1);
258         if (fabs(value) < deadzone)
259                 return 0; // within deadzone around center
260         return value * sensitivity;
261 }
262
263 void IN_Move( void )
264 {
265         int j;
266         static int old_x = 0, old_y = 0;
267         static int stuck = 0;
268         int x, y;
269         if (vid_usingmouse)
270         {
271                 if(vid_stick_mouse.integer)
272                 {
273                         // have the mouse stuck in the middle, example use: prevent expose effect of beryl during the game when not using
274                         // window grabbing. --blub
275
276                         // we need 2 frames to initialize the center position
277                         if(!stuck)
278                         {
279                                 SDL_WarpMouse(win_half_width, win_half_height);
280                                 SDL_GetMouseState(&x, &y);
281                                 SDL_GetRelativeMouseState(&x, &y);
282                                 ++stuck;
283                         } else {
284                                 SDL_GetRelativeMouseState(&x, &y);
285                                 in_mouse_x = x + old_x;
286                                 in_mouse_y = y + old_y;
287                                 SDL_GetMouseState(&x, &y);
288                                 old_x = x - win_half_width;
289                                 old_y = y - win_half_height;
290                                 SDL_WarpMouse(win_half_width, win_half_height);
291                         }
292                 } else {
293                         SDL_GetRelativeMouseState( &x, &y );
294                         in_mouse_x = x;
295                         in_mouse_y = y;
296                 }
297         }
298
299         SDL_GetMouseState(&x, &y);
300         in_windowmouse_x = x;
301         in_windowmouse_y = y;
302
303         if (vid_numjoysticks && joy_enable.integer && joy_index.integer >= 0 && joy_index.integer < vid_numjoysticks)
304         {
305                 SDL_Joystick *joy = vid_joysticks[joy_index.integer];
306                 int numballs = SDL_JoystickNumBalls(joy);
307                 for (j = 0;j < numballs;j++)
308                 {
309                         SDL_JoystickGetBall(joy, j, &x, &y);
310                         in_mouse_x += x;
311                         in_mouse_y += y;
312                 }
313                 cl.cmd.forwardmove += IN_JoystickGetAxis(joy, joy_axisforward.integer, joy_sensitivityforward.value, joy_deadzoneforward.value) * cl_forwardspeed.value;
314                 cl.cmd.sidemove    += IN_JoystickGetAxis(joy, joy_axisside.integer, joy_sensitivityside.value, joy_deadzoneside.value) * cl_sidespeed.value;
315                 cl.cmd.upmove      += IN_JoystickGetAxis(joy, joy_axisup.integer, joy_sensitivityup.value, joy_deadzoneup.value) * cl_upspeed.value;
316                 cl.viewangles[0]   += IN_JoystickGetAxis(joy, joy_axispitch.integer, joy_sensitivitypitch.value, joy_deadzonepitch.value) * cl.realframetime * cl_pitchspeed.value;
317                 cl.viewangles[1]   += IN_JoystickGetAxis(joy, joy_axisyaw.integer, joy_sensitivityyaw.value, joy_deadzoneyaw.value) * cl.realframetime * cl_yawspeed.value;
318                 //cl.viewangles[2]   += IN_JoystickGetAxis(joy, joy_axisroll.integer, joy_sensitivityroll.value, joy_deadzoneroll.value) * cl.realframetime * cl_rollspeed.value;
319         }
320 }
321
322 /////////////////////
323 // Message Handling
324 ////
325
326 static int Sys_EventFilter( SDL_Event *event )
327 {
328         //TODO: Add a quit query in linux, too - though linux user are more likely to know what they do
329         if (event->type == SDL_QUIT)
330         {
331 #ifdef WIN32
332                 if (MessageBox( NULL, "Are you sure you want to quit?", "Confirm Exit", MB_YESNO | MB_SETFOREGROUND | MB_ICONQUESTION ) == IDNO)
333                         return 0;
334 #endif
335         }
336         return 1;
337 }
338
339 static keynum_t buttonremap[18] =
340 {
341         K_MOUSE1,
342         K_MOUSE3,
343         K_MOUSE2,
344         K_MWHEELUP,
345         K_MWHEELDOWN,
346         K_MOUSE4,
347         K_MOUSE5,
348         K_MOUSE6,
349         K_MOUSE7,
350         K_MOUSE8,
351         K_MOUSE9,
352         K_MOUSE10,
353         K_MOUSE11,
354         K_MOUSE12,
355         K_MOUSE13,
356         K_MOUSE14,
357         K_MOUSE15,
358         K_MOUSE16,
359 };
360
361 void Sys_SendKeyEvents( void )
362 {
363         static qboolean sound_active = true;
364         SDL_Event event;
365
366         while( SDL_PollEvent( &event ) )
367                 switch( event.type ) {
368                         case SDL_QUIT:
369                                 Sys_Quit(0);
370                                 break;
371                         case SDL_KEYDOWN:
372                         case SDL_KEYUP:
373                                 Key_Event( MapKey( event.key.keysym.sym ), (char)event.key.keysym.unicode, (event.key.state == SDL_PRESSED) );
374                                 break;
375                         case SDL_ACTIVEEVENT:
376                                 if( event.active.state == SDL_APPACTIVE )
377                                 {
378                                         if( event.active.gain )
379                                                 vid_hidden = false;
380                                         else
381                                                 vid_hidden = true;
382                                 }
383                                 break;
384                         case SDL_MOUSEBUTTONDOWN:
385                         case SDL_MOUSEBUTTONUP:
386                                 if (event.button.button <= 18)
387                                         Key_Event( buttonremap[event.button.button - 1], 0, event.button.state == SDL_PRESSED );
388                                 break;
389                         case SDL_JOYBUTTONDOWN:
390                                 if (!joy_enable.integer)
391                                         break; // ignore down events if joystick has been disabled
392                         case SDL_JOYBUTTONUP:
393                                 if (event.jbutton.button < 48)
394                                         Key_Event( event.jbutton.button + (event.jbutton.button < 16 ? K_JOY1 : K_AUX1 - 16), 0, (event.jbutton.state == SDL_PRESSED) );
395                                 break;
396                         case SDL_VIDEORESIZE:
397                                 if(vid_resizable.integer < 2)
398                                 {
399                                         vid.width = event.resize.w;
400                                         vid.height = event.resize.h;
401                                         SDL_SetVideoMode(vid.width, vid.height, video_bpp, video_flags);
402                                 }
403                                 break;
404                 }
405
406         // enable/disable sound on focus gain/loss
407         if (!vid_hidden && (vid_activewindow || !snd_mutewhenidle.integer))
408         {
409                 if (!sound_active)
410                 {
411                         S_UnblockSound ();
412                         sound_active = true;
413                 }
414         }
415         else
416         {
417                 if (sound_active)
418                 {
419                         S_BlockSound ();
420                         sound_active = false;
421                 }
422         }
423 }
424
425 /////////////////
426 // Video system
427 ////
428
429 void *GL_GetProcAddress(const char *name)
430 {
431         void *p = NULL;
432         p = SDL_GL_GetProcAddress(name);
433         return p;
434 }
435
436 static int Sys_EventFilter( SDL_Event *event );
437 static qboolean vid_sdl_initjoysticksystem = false;
438 void VID_Init (void)
439 {
440         Cvar_RegisterVariable(&joy_detected);
441         Cvar_RegisterVariable(&joy_enable);
442         Cvar_RegisterVariable(&joy_index);
443         Cvar_RegisterVariable(&joy_axisforward);
444         Cvar_RegisterVariable(&joy_axisside);
445         Cvar_RegisterVariable(&joy_axisup);
446         Cvar_RegisterVariable(&joy_axispitch);
447         Cvar_RegisterVariable(&joy_axisyaw);
448         //Cvar_RegisterVariable(&joy_axisroll);
449         Cvar_RegisterVariable(&joy_deadzoneforward);
450         Cvar_RegisterVariable(&joy_deadzoneside);
451         Cvar_RegisterVariable(&joy_deadzoneup);
452         Cvar_RegisterVariable(&joy_deadzonepitch);
453         Cvar_RegisterVariable(&joy_deadzoneyaw);
454         //Cvar_RegisterVariable(&joy_deadzoneroll);
455         Cvar_RegisterVariable(&joy_sensitivityforward);
456         Cvar_RegisterVariable(&joy_sensitivityside);
457         Cvar_RegisterVariable(&joy_sensitivityup);
458         Cvar_RegisterVariable(&joy_sensitivitypitch);
459         Cvar_RegisterVariable(&joy_sensitivityyaw);
460         //Cvar_RegisterVariable(&joy_sensitivityroll);
461
462         if (SDL_Init(SDL_INIT_VIDEO) < 0)
463                 Sys_Error ("Failed to init SDL video subsystem: %s", SDL_GetError());
464         vid_sdl_initjoysticksystem = SDL_Init(SDL_INIT_JOYSTICK) >= 0;
465         if (vid_sdl_initjoysticksystem)
466                 Con_Printf("Failed to init SDL joystick subsystem: %s\n", SDL_GetError());
467         vid_isfullscreen = false;
468 }
469
470 // set the icon (we dont use SDL here since it would be too much a PITA)
471 #ifdef WIN32
472 #include "resource.h"
473 #include <SDL_syswm.h>
474 static void VID_SetCaption()
475 {
476     SDL_SysWMinfo       info;
477         HICON                   icon;
478
479         // set the caption
480         SDL_WM_SetCaption( gamename, NULL );
481
482         // get the HWND handle
483     SDL_VERSION( &info.version );
484         if( !SDL_GetWMInfo( &info ) )
485                 return;
486
487         icon = LoadIcon( GetModuleHandle( NULL ), MAKEINTRESOURCE( IDI_ICON1 ) );
488 #ifndef _W64 //If Windows 64bit data types don't exist
489 #ifndef SetClassLongPtr
490 #define SetClassLongPtr SetClassLong
491 #endif
492 #ifndef GCLP_HICON
493 #define GCLP_HICON GCL_HICON
494 #endif
495 #ifndef LONG_PTR
496 #define LONG_PTR LONG
497 #endif
498 #endif
499         SetClassLongPtr( info.window, GCLP_HICON, (LONG_PTR)icon );
500 }
501 static void VID_SetIcon()
502 {
503 }
504 #else
505 // Adding the OS independent XPM version --blub
506 #include "darkplaces.xpm"
507 #include "nexuiz.xpm"
508 static SDL_Surface *icon = NULL;
509 static void VID_SetIcon()
510 {
511         /*
512          * Somewhat restricted XPM reader. Only supports XPMs saved by GIMP 2.4 at
513          * default settings with less than 91 colors and transparency.
514          */
515
516         int width, height, colors, isize, i, j;
517         int thenone = -1;
518         static SDL_Color palette[256];
519         unsigned short palenc[256]; // store color id by char
520
521         char **idata = ENGINE_ICON;
522         char *data = idata[0];
523
524         if(sscanf(data, "%i %i %i %i", &width, &height, &colors, &isize) != 4)
525         {
526                 // NOTE: Only 1-char colornames are supported
527                 Con_Printf("Sorry, but this does not even look similar to an XPM.\n");
528                 return;
529         }
530
531         if(isize != 1)
532         {
533                 // NOTE: Only 1-char colornames are supported
534                 Con_Printf("This XPM's palette is either huge or idiotically unoptimized. It's key size is %i\n", isize);
535                 return;
536         }
537
538         for(i = 0; i < colors; ++i)
539         {
540                 int r, g, b;
541                 char idx;
542
543                 if(sscanf(idata[i+1], "%c c #%02x%02x%02x", &idx, &r, &g, &b) != 4)
544                 {
545                         char foo[2];
546                         if(sscanf(idata[i+1], "%c c Non%1[e]", &idx, foo) != 2) // I take the DailyWTF credit for this. --div0
547                         {
548                                 Con_Printf("This XPM's palette looks odd. Can't continue.\n");
549                                 return;
550                         }
551                         else
552                         {
553                                 palette[i].r = 255; // color key
554                                 palette[i].g = 0;
555                                 palette[i].b = 255;
556                                 thenone = i; // weeeee
557                         }
558                 }
559                 else
560                 {
561                         palette[i].r = r - (r == 255 && g == 0 && b == 255); // change 255/0/255 pink to 254/0/255 for color key
562                         palette[i].g = g;
563                         palette[i].b = b;
564                 }
565
566                 palenc[(unsigned char) idx] = i;
567         }
568
569         // allocate the image data
570         data = (char*) malloc(width*height);
571
572         for(j = 0; j < height; ++j)
573         {
574                 for(i = 0; i < width; ++i)
575                 {
576                         // casting to the safest possible datatypes ^^
577                         data[j * width + i] = palenc[((unsigned char*)idata[colors+j+1])[i]];
578                 }
579         }
580
581         if(icon != NULL)
582         {
583                 // SDL_FreeSurface should free the data too
584                 // but for completeness' sake...
585                 if(icon->flags & SDL_PREALLOC)
586                 {
587                         free(icon->pixels);
588                         icon->pixels = NULL; // safety
589                 }
590                 SDL_FreeSurface(icon);
591         }
592
593         icon = SDL_CreateRGBSurface(SDL_SRCCOLORKEY, width, height, 8, 0,0,0,0);// rmask, gmask, bmask, amask); no mask needed
594         // 8 bit surfaces get an empty palette allocated according to the docs
595         // so it's a palette image for sure :) no endian check necessary for the mask
596
597         if(icon == NULL) {
598                 Con_Printf(     "Failed to create surface for the window Icon!\n"
599                                 "%s\n", SDL_GetError());
600                 free(data);
601                 return;
602         }
603         icon->pixels = data;
604         SDL_SetPalette(icon, SDL_PHYSPAL|SDL_LOGPAL, palette, 0, colors);
605         SDL_SetColorKey(icon, SDL_SRCCOLORKEY, thenone);
606
607         SDL_WM_SetIcon(icon, NULL);
608 }
609
610
611 static void VID_SetCaption()
612 {
613         SDL_WM_SetCaption( gamename, NULL );
614 }
615 #endif
616
617 static void VID_OutputVersion()
618 {
619         const SDL_version *version;
620         version = SDL_Linked_Version();
621         Con_Printf(     "Linked against SDL version %d.%d.%d\n"
622                                         "Using SDL library version %d.%d.%d\n",
623                                         SDL_MAJOR_VERSION, SDL_MINOR_VERSION, SDL_PATCHLEVEL,
624                                         version->major, version->minor, version->patch );
625 }
626
627 int VID_InitMode(int fullscreen, int *width, int *height, int bpp, int refreshrate, int stereobuffer, int samples)
628 {
629         int i;
630         static int notfirstvideomode = false;
631         int flags = SDL_OPENGL;
632         const char *drivername;
633
634         win_half_width = *width>>1;
635         win_half_height = *height>>1;
636
637         if(vid_resizable.integer)
638                 flags |= SDL_RESIZABLE;
639
640         VID_OutputVersion();
641
642         /*
643         SDL Hack
644                 We cant switch from one OpenGL video mode to another.
645                 Thus we first switch to some stupid 2D mode and then back to OpenGL.
646         */
647         if (notfirstvideomode)
648                 SDL_SetVideoMode( 0, 0, 0, 0 );
649         notfirstvideomode = true;
650
651         // SDL usually knows best
652         drivername = NULL;
653
654 // 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
655         i = COM_CheckParm("-gl_driver");
656         if (i && i < com_argc - 1)
657                 drivername = com_argv[i + 1];
658         if (SDL_GL_LoadLibrary(drivername) < 0)
659         {
660                 Con_Printf("Unable to load GL driver \"%s\": %s\n", drivername, SDL_GetError());
661                 return false;
662         }
663
664         if ((qglGetString = (const GLubyte* (GLAPIENTRY *)(GLenum name))GL_GetProcAddress("glGetString")) == NULL)
665         {
666                 VID_Shutdown();
667                 Con_Print("Required OpenGL function glGetString not found\n");
668                 return false;
669         }
670
671         // Knghtbrd: should do platform-specific extension string function here
672
673         vid_isfullscreen = false;
674         if (fullscreen) {
675                 flags |= SDL_FULLSCREEN;
676                 vid_isfullscreen = true;
677         }
678         //flags |= SDL_HWSURFACE;
679
680         SDL_GL_SetAttribute (SDL_GL_DOUBLEBUFFER, 1);
681         if (bpp >= 32)
682         {
683                 SDL_GL_SetAttribute (SDL_GL_RED_SIZE, 8);
684                 SDL_GL_SetAttribute (SDL_GL_GREEN_SIZE, 8);
685                 SDL_GL_SetAttribute (SDL_GL_BLUE_SIZE, 8);
686                 SDL_GL_SetAttribute (SDL_GL_ALPHA_SIZE, 8);
687                 SDL_GL_SetAttribute (SDL_GL_DEPTH_SIZE, 24);
688                 SDL_GL_SetAttribute (SDL_GL_STENCIL_SIZE, 8);
689         }
690         else
691         {
692                 SDL_GL_SetAttribute (SDL_GL_RED_SIZE, 5);
693                 SDL_GL_SetAttribute (SDL_GL_GREEN_SIZE, 5);
694                 SDL_GL_SetAttribute (SDL_GL_BLUE_SIZE, 5);
695                 SDL_GL_SetAttribute (SDL_GL_DEPTH_SIZE, 16);
696         }
697         if (stereobuffer)
698                 SDL_GL_SetAttribute (SDL_GL_STEREO, 1);
699         if (vid_vsync.integer)
700                 SDL_GL_SetAttribute (SDL_GL_SWAP_CONTROL, 1);
701         else
702                 SDL_GL_SetAttribute (SDL_GL_SWAP_CONTROL, 0);
703         if (samples > 1)
704         {
705                 SDL_GL_SetAttribute (SDL_GL_MULTISAMPLEBUFFERS, 1);
706                 SDL_GL_SetAttribute (SDL_GL_MULTISAMPLESAMPLES, samples);
707         }
708
709         video_bpp = bpp;
710         video_flags = flags;
711         VID_SetIcon();
712         screen = SDL_SetVideoMode(*width, *height, bpp, flags);
713
714         if (screen == NULL)
715         {
716                 Con_Printf("Failed to set video mode to %ix%i: %s\n", *width, *height, SDL_GetError());
717                 VID_Shutdown();
718                 return false;
719         }
720
721         // set window title
722         VID_SetCaption();
723         // set up an event filter to ask confirmation on close button in WIN32
724         SDL_SetEventFilter( (SDL_EventFilter) Sys_EventFilter );
725         // init keyboard
726         SDL_EnableUNICODE( SDL_ENABLE );
727         // enable key repeat since everyone expects it
728         SDL_EnableKeyRepeat(SDL_DEFAULT_REPEAT_DELAY, SDL_DEFAULT_REPEAT_INTERVAL);
729
730         gl_platform = "SDL";
731         gl_platformextensions = "";
732         gl_videosyncavailable = true;
733
734         GL_Init();
735
736         vid_numjoysticks = SDL_NumJoysticks();
737         vid_numjoysticks = bound(0, vid_numjoysticks, MAX_JOYSTICKS);
738         Cvar_SetValueQuick(&joy_detected, vid_numjoysticks);
739         Con_Printf("%d SDL joystick(s) found:\n", vid_numjoysticks);
740         memset(vid_joysticks, 0, sizeof(vid_joysticks));
741         for (i = 0;i < vid_numjoysticks;i++)
742         {
743                 SDL_Joystick *joy;
744                 joy = vid_joysticks[i] = SDL_JoystickOpen(i);
745                 if (!joy)
746                 {
747                         Con_Printf("joystick #%i: open failed: %s\n", i, SDL_GetError());
748                         continue;
749                 }
750                 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));
751         }
752
753         vid_hidden = false;
754         vid_activewindow = false;
755         vid_usingmouse = false;
756         vid_usinghidecursor = false;
757
758         SDL_WM_GrabInput(SDL_GRAB_OFF);
759         return true;
760 }
761
762 void VID_Shutdown (void)
763 {
764         VID_SetMouse(false, false, false);
765         VID_RestoreSystemGamma();
766
767         SDL_QuitSubSystem(SDL_INIT_VIDEO);
768
769         gl_driver[0] = 0;
770         gl_extensions = "";
771         gl_platform = "";
772         gl_platformextensions = "";
773 }
774
775 int VID_SetGamma (unsigned short *ramps, int rampsize)
776 {
777         return !SDL_SetGammaRamp (ramps, ramps + rampsize, ramps + rampsize*2);
778 }
779
780 int VID_GetGamma (unsigned short *ramps, int rampsize)
781 {
782         return !SDL_GetGammaRamp (ramps, ramps + rampsize, ramps + rampsize*2);
783 }
784
785 void VID_Finish (void)
786 {
787         Uint8 appstate;
788
789         //react on appstate changes
790         appstate = SDL_GetAppState();
791
792         vid_hidden = !(appstate & SDL_APPACTIVE);
793
794         if( vid_hidden || !( appstate & SDL_APPMOUSEFOCUS ) || !( appstate & SDL_APPINPUTFOCUS ) )
795                 vid_activewindow = false;
796         else
797                 vid_activewindow = true;
798
799         VID_UpdateGamma(false, 256);
800
801         if (r_render.integer && !vid_hidden)
802         {
803                 CHECKGLERROR
804                 if (r_speeds.integer || gl_finish.integer)
805                 {
806                         qglFinish();CHECKGLERROR
807                 }
808                 SDL_GL_SwapBuffers();
809         }
810 }