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 #ifdef WIN32
  26 #define SDL_R_RESTART
  27 #endif
  28
  29 // Tell startup code that we have a client
  30 int cl_available = true;
  31
  32 qboolean vid_supportrefreshrate = false;
  33
  34 cvar_t joy_detected = {CVAR_READONLY, "joy_detected", "0", "number of joysticks detected by engine"};
  35 cvar_t joy_enable = {CVAR_SAVE, "joy_enable", "0", "enables joystick support"};
  36 cvar_t joy_index = {0, "joy_index", "0", "selects which joystick to use if you have multiple"};
  37 cvar_t joy_axisforward = {0, "joy_axisforward", "1", "which joystick axis to query for forward/backward movement"};
  38 cvar_t joy_axisside = {0, "joy_axisside", "0", "which joystick axis to query for right/left movement"};
  39 cvar_t joy_axisup = {0, "joy_axisup", "-1", "which joystick axis to query for up/down movement"};
  40 cvar_t joy_axispitch = {0, "joy_axispitch", "3", "which joystick axis to query for looking up/down"};
  41 cvar_t joy_axisyaw = {0, "joy_axisyaw", "2", "which joystick axis to query for looking right/left"};
  42 cvar_t joy_axisroll = {0, "joy_axisroll", "-1", "which joystick axis to query for tilting head right/left"};
  43 cvar_t joy_deadzoneforward = {0, "joy_deadzoneforward", "0", "deadzone tolerance, suggested values are in the range 0 to 0.01"};
  44 cvar_t joy_deadzoneside = {0, "joy_deadzoneside", "0", "deadzone tolerance, suggested values are in the range 0 to 0.01"};
  45 cvar_t joy_deadzoneup = {0, "joy_deadzoneup", "0", "deadzone tolerance, suggested values are in the range 0 to 0.01"};
  46 cvar_t joy_deadzonepitch = {0, "joy_deadzonepitch", "0", "deadzone tolerance, suggested values are in the range 0 to 0.01"};
  47 cvar_t joy_deadzoneyaw = {0, "joy_deadzoneyaw", "0", "deadzone tolerance, suggested values are in the range 0 to 0.01"};
  48 cvar_t joy_deadzoneroll = {0, "joy_deadzoneroll", "0", "deadzone tolerance, suggested values are in the range 0 to 0.01"};
  49 cvar_t joy_sensitivityforward = {0, "joy_sensitivityforward", "-1", "movement multiplier"};
  50 cvar_t joy_sensitivityside = {0, "joy_sensitivityside", "1", "movement multiplier"};
  51 cvar_t joy_sensitivityup = {0, "joy_sensitivityup", "1", "movement multiplier"};
  52 cvar_t joy_sensitivitypitch = {0, "joy_sensitivitypitch", "1", "movement multiplier"};
  53 cvar_t joy_sensitivityyaw = {0, "joy_sensitivityyaw", "-1", "movement multiplier"};
  54 cvar_t joy_sensitivityroll = {0, "joy_sensitivityroll", "1", "movement multiplier"};
  55
  56 static qboolean vid_usingmouse = false;
  57 static qboolean vid_usinghidecursor = false;
  58 static qboolean vid_isfullscreen;
  59 static int vid_numjoysticks = 0;
  60 #define MAX_JOYSTICKS 8
  61 static SDL_Joystick *vid_joysticks[MAX_JOYSTICKS];
  62
  63 static int win_half_width = 50;
  64 static int win_half_height = 50;
  65 static int video_bpp, video_flags;
  66
  67 static SDL_Surface *screen;
  68
  69 /////////////////////////
  70 // Input handling
  71 ////
  72 //TODO: Add joystick support
  73 //TODO: Add error checking
  74
  75
  76 //keysym to quake keysym mapping
  77 #define tenoh   0,0,0,0,0, 0,0,0,0,0
  78 #define fiftyoh tenoh, tenoh, tenoh, tenoh, tenoh
  79 #define hundredoh fiftyoh, fiftyoh
  80 static unsigned int tbl_sdltoquake[] =
  81 {
  82         0,0,0,0,                //SDLK_UNKNOWN          = 0,
  83         0,0,0,0,                //SDLK_FIRST            = 0,
  84         K_BACKSPACE,    //SDLK_BACKSPACE        = 8,
  85         K_TAB,                  //SDLK_TAB                      = 9,
  86         0,0,
  87         0,                              //SDLK_CLEAR            = 12,
  88         K_ENTER,                //SDLK_RETURN           = 13,
  89     0,0,0,0,0,
  90         K_PAUSE,                //SDLK_PAUSE            = 19,
  91         0,0,0,0,0,0,0,
  92         K_ESCAPE,               //SDLK_ESCAPE           = 27,
  93         0,0,0,0,
  94         K_SPACE,                //SDLK_SPACE            = 32,
  95         '!',                    //SDLK_EXCLAIM          = 33,
  96         '"',                    //SDLK_QUOTEDBL         = 34,
  97         '#',                    //SDLK_HASH                     = 35,
  98         '$',                    //SDLK_DOLLAR           = 36,
  99         0,
 100         '&',                    //SDLK_AMPERSAND        = 38,
 101         '\'',                   //SDLK_QUOTE            = 39,
 102         '(',                    //SDLK_LEFTPAREN        = 40,
 103         ')',                    //SDLK_RIGHTPAREN       = 41,
 104         '*',                    //SDLK_ASTERISK         = 42,
 105         '+',                    //SDLK_PLUS                     = 43,
 106         ',',                    //SDLK_COMMA            = 44,
 107         '-',                    //SDLK_MINUS            = 45,
 108         '.',                    //SDLK_PERIOD           = 46,
 109         '/',                    //SDLK_SLASH            = 47,
 110         '0',                    //SDLK_0                        = 48,
 111         '1',                    //SDLK_1                        = 49,
 112         '2',                    //SDLK_2                        = 50,
 113         '3',                    //SDLK_3                        = 51,
 114         '4',                    //SDLK_4                        = 52,
 115         '5',                    //SDLK_5                        = 53,
 116         '6',                    //SDLK_6                        = 54,
 117         '7',                    //SDLK_7                        = 55,
 118         '8',                    //SDLK_8                        = 56,
 119         '9',                    //SDLK_9                        = 57,
 120         ':',                    //SDLK_COLON            = 58,
 121         ';',                    //SDLK_SEMICOLON        = 59,
 122         '<',                    //SDLK_LESS                     = 60,
 123         '=',                    //SDLK_EQUALS           = 61,
 124         '>',                    //SDLK_GREATER          = 62,
 125         '?',                    //SDLK_QUESTION         = 63,
 126         '@',                    //SDLK_AT                       = 64,
 127         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,
 128         '[',            //SDLK_LEFTBRACKET      = 91,
 129         '\\',           //SDLK_BACKSLASH        = 92,
 130         ']',            //SDLK_RIGHTBRACKET     = 93,
 131         '^',            //SDLK_CARET            = 94,
 132         '_',            //SDLK_UNDERSCORE       = 95,
 133         '`',            //SDLK_BACKQUOTE        = 96,
 134         'a',            //SDLK_a                        = 97,
 135         'b',            //SDLK_b                        = 98,
 136         'c',            //SDLK_c                        = 99,
 137         'd',            //SDLK_d                        = 100,
 138         'e',            //SDLK_e                        = 101,
 139         'f',            //SDLK_f                        = 102,
 140         'g',            //SDLK_g                        = 103,
 141         'h',            //SDLK_h                        = 104,
 142         'i',            //SDLK_i                        = 105,
 143         'j',            //SDLK_j                        = 106,
 144         'k',            //SDLK_k                        = 107,
 145         'l',            //SDLK_l                        = 108,
 146         'm',            //SDLK_m                        = 109,
 147         'n',            //SDLK_n                        = 110,
 148         'o',            //SDLK_o                        = 111,
 149         'p',            //SDLK_p                        = 112,
 150         'q',            //SDLK_q                        = 113,
 151         'r',            //SDLK_r                        = 114,
 152         's',            //SDLK_s                        = 115,
 153         't',            //SDLK_t                        = 116,
 154         'u',            //SDLK_u                        = 117,
 155         'v',            //SDLK_v                        = 118,
 156         'w',            //SDLK_w                        = 119,
 157         'x',            //SDLK_x                        = 120,
 158         'y',            //SDLK_y                        = 121,
 159         'z',            //SDLK_z                        = 122,
 160         0,0,0,0,
 161         K_DEL,          //SDLK_DELETE           = 127,
 162         hundredoh /*227*/, tenoh, tenoh, 0,0,0,0,0,0,0,0,
 163         K_KP_0,         //SDLK_KP0              = 256,
 164         K_KP_1,         //SDLK_KP1              = 257,
 165         K_KP_2,         //SDLK_KP2              = 258,
 166         K_KP_3,         //SDLK_KP3              = 259,
 167         K_KP_4,         //SDLK_KP4              = 260,
 168         K_KP_5,         //SDLK_KP5              = 261,
 169         K_KP_6,         //SDLK_KP6              = 262,
 170         K_KP_7,         //SDLK_KP7              = 263,
 171         K_KP_8,         //SDLK_KP8              = 264,
 172         K_KP_9,         //SDLK_KP9              = 265,
 173         K_KP_PERIOD,//SDLK_KP_PERIOD    = 266,
 174         K_KP_DIVIDE,//SDLK_KP_DIVIDE    = 267,
 175         K_KP_MULTIPLY,//SDLK_KP_MULTIPLY= 268,
 176         K_KP_MINUS,     //SDLK_KP_MINUS         = 269,
 177         K_KP_PLUS,      //SDLK_KP_PLUS          = 270,
 178         K_KP_ENTER,     //SDLK_KP_ENTER         = 271,
 179         K_KP_EQUALS,//SDLK_KP_EQUALS    = 272,
 180         K_UPARROW,      //SDLK_UP               = 273,
 181         K_DOWNARROW,//SDLK_DOWN         = 274,
 182         K_RIGHTARROW,//SDLK_RIGHT       = 275,
 183         K_LEFTARROW,//SDLK_LEFT         = 276,
 184         K_INS,          //SDLK_INSERT   = 277,
 185         K_HOME,         //SDLK_HOME             = 278,
 186         K_END,          //SDLK_END              = 279,
 187         K_PGUP,         //SDLK_PAGEUP   = 280,
 188         K_PGDN,         //SDLK_PAGEDOWN = 281,
 189         K_F1,           //SDLK_F1               = 282,
 190         K_F2,           //SDLK_F2               = 283,
 191         K_F3,           //SDLK_F3               = 284,
 192         K_F4,           //SDLK_F4               = 285,
 193         K_F5,           //SDLK_F5               = 286,
 194         K_F6,           //SDLK_F6               = 287,
 195         K_F7,           //SDLK_F7               = 288,
 196         K_F8,           //SDLK_F8               = 289,
 197         K_F9,           //SDLK_F9               = 290,
 198         K_F10,          //SDLK_F10              = 291,
 199         K_F11,          //SDLK_F11              = 292,
 200         K_F12,          //SDLK_F12              = 293,
 201         0,                      //SDLK_F13              = 294,
 202         0,                      //SDLK_F14              = 295,
 203         0,                      //SDLK_F15              = 296,
 204         0,0,0,
 205         K_NUMLOCK,      //SDLK_NUMLOCK  = 300,
 206         K_CAPSLOCK,     //SDLK_CAPSLOCK = 301,
 207         K_SCROLLOCK,//SDLK_SCROLLOCK= 302,
 208         K_SHIFT,        //SDLK_RSHIFT   = 303,
 209         K_SHIFT,        //SDLK_LSHIFT   = 304,
 210         K_CTRL,         //SDLK_RCTRL    = 305,
 211         K_CTRL,         //SDLK_LCTRL    = 306,
 212         K_ALT,          //SDLK_RALT             = 307,
 213         K_ALT,          //SDLK_LALT             = 308,
 214         0,                      //SDLK_RMETA    = 309,
 215         0,                      //SDLK_LMETA    = 310,
 216         K_SUPER,                //SDLK_LSUPER   = 311,          /* Left "Windows" key */
 217         K_SUPER,                //SDLK_RSUPER   = 312,          /* Right "Windows" key */
 218         K_ALT,                  //SDLK_MODE             = 313,          /* "Alt Gr" key */
 219         0,                      //SDLK_COMPOSE  = 314,          /* Multi-key compose key */
 220         0,                      //SDLK_HELP             = 315,
 221         0,                      //SDLK_PRINT    = 316,
 222         0,                      //SDLK_SYSREQ   = 317,
 223         K_PAUSE,        //SDLK_BREAK    = 318,
 224         0,                      //SDLK_MENU             = 319,
 225         0,                      //SDLK_POWER    = 320,          /* Power Macintosh power key */
 226         'e',            //SDLK_EURO             = 321,          /* Some european keyboards */
 227         0                       //SDLK_UNDO             = 322,          /* Atari keyboard has Undo */
 228 };
 229 #undef tenoh
 230 #undef fiftyoh
 231 #undef hundredoh
 232
 233 static int MapKey( unsigned int sdlkey )
 234 {
 235         if( sdlkey > sizeof(tbl_sdltoquake)/ sizeof(int) )
 236                 return 0;
 237     return tbl_sdltoquake[ sdlkey ];
 238 }
 239
 240 void VID_SetMouse(qboolean fullscreengrab, qboolean relative, qboolean hidecursor)
 241 {
 242         if (vid_usingmouse != relative)
 243         {
 244                 vid_usingmouse = relative;
 245                 cl_ignoremousemoves = 2;
 246                 SDL_WM_GrabInput( relative ? SDL_GRAB_ON : SDL_GRAB_OFF );
 247         }
 248         if (vid_usinghidecursor != hidecursor)
 249         {
 250                 vid_usinghidecursor = hidecursor;
 251                 SDL_ShowCursor( hidecursor ? SDL_DISABLE : SDL_ENABLE);
 252         }
 253 }
 254
 255 static double IN_JoystickGetAxis(SDL_Joystick *joy, int axis, double sensitivity, double deadzone)
 256 {
 257         double value;
 258         if (axis < 0 || axis >= SDL_JoystickNumAxes(joy))
 259                 return 0; // no such axis on this joystick
 260         value = SDL_JoystickGetAxis(joy, axis) * (1.0 / 32767.0);
 261         value = bound(-1, value, 1);
 262         if (fabs(value) < deadzone)
 263                 return 0; // within deadzone around center
 264         return value * sensitivity;
 265 }
 266
 267 void IN_Move( void )
 268 {
 269         int j;
 270         static int old_x = 0, old_y = 0;
 271         static int stuck = 0;
 272         int x, y;
 273         if (vid_usingmouse)
 274         {
 275                 if(vid_stick_mouse.integer)
 276                 {
 277                         // have the mouse stuck in the middle, example use: prevent expose effect of beryl during the game when not using
 278                         // window grabbing. --blub
 279
 280                         // we need 2 frames to initialize the center position
 281                         if(!stuck)
 282                         {
 283                                 SDL_WarpMouse(win_half_width, win_half_height);
 284                                 SDL_GetMouseState(&x, &y);
 285                                 SDL_GetRelativeMouseState(&x, &y);
 286                                 ++stuck;
 287                         } else {
 288                                 SDL_GetRelativeMouseState(&x, &y);
 289                                 in_mouse_x = x + old_x;
 290                                 in_mouse_y = y + old_y;
 291                                 SDL_GetMouseState(&x, &y);
 292                                 old_x = x - win_half_width;
 293                                 old_y = y - win_half_height;
 294                                 SDL_WarpMouse(win_half_width, win_half_height);
 295                         }
 296                 } else {
 297                         SDL_GetRelativeMouseState( &x, &y );
 298                         in_mouse_x = x;
 299                         in_mouse_y = y;
 300                 }
 301         }
 302
 303         SDL_GetMouseState(&x, &y);
 304         in_windowmouse_x = x;
 305         in_windowmouse_y = y;
 306
 307         if (vid_numjoysticks && joy_enable.integer && joy_index.integer >= 0 && joy_index.integer < vid_numjoysticks)
 308         {
 309                 SDL_Joystick *joy = vid_joysticks[joy_index.integer];
 310                 int numballs = SDL_JoystickNumBalls(joy);
 311                 for (j = 0;j < numballs;j++)
 312                 {
 313                         SDL_JoystickGetBall(joy, j, &x, &y);
 314                         in_mouse_x += x;
 315                         in_mouse_y += y;
 316                 }
 317                 cl.cmd.forwardmove += IN_JoystickGetAxis(joy, joy_axisforward.integer, joy_sensitivityforward.value, joy_deadzoneforward.value) * cl_forwardspeed.value;
 318                 cl.cmd.sidemove    += IN_JoystickGetAxis(joy, joy_axisside.integer, joy_sensitivityside.value, joy_deadzoneside.value) * cl_sidespeed.value;
 319                 cl.cmd.upmove      += IN_JoystickGetAxis(joy, joy_axisup.integer, joy_sensitivityup.value, joy_deadzoneup.value) * cl_upspeed.value;
 320                 cl.viewangles[0]   += IN_JoystickGetAxis(joy, joy_axispitch.integer, joy_sensitivitypitch.value, joy_deadzonepitch.value) * cl.realframetime * cl_pitchspeed.value;
 321                 cl.viewangles[1]   += IN_JoystickGetAxis(joy, joy_axisyaw.integer, joy_sensitivityyaw.value, joy_deadzoneyaw.value) * cl.realframetime * cl_yawspeed.value;
 322                 //cl.viewangles[2]   += IN_JoystickGetAxis(joy, joy_axisroll.integer, joy_sensitivityroll.value, joy_deadzoneroll.value) * cl.realframetime * cl_rollspeed.value;
 323         }
 324 }
 325
 326 /////////////////////
 327 // Message Handling
 328 ////
 329
 330 static int Sys_EventFilter( SDL_Event *event )
 331 {
 332         //TODO: Add a quit query in linux, too - though linux user are more likely to know what they do
 333         if (event->type == SDL_QUIT)
 334         {
 335 #ifdef WIN32
 336                 if (MessageBox( NULL, "Are you sure you want to quit?", "Confirm Exit", MB_YESNO | MB_SETFOREGROUND | MB_ICONQUESTION ) == IDNO)
 337                         return 0;
 338 #endif
 339         }
 340         return 1;
 341 }
 342
 343 #ifdef SDL_R_RESTART
 344 static qboolean sdl_needs_restart;
 345 static void sdl_start(void)
 346 {
 347 }
 348 static void sdl_shutdown(void)
 349 {
 350         sdl_needs_restart = false;
 351 }
 352 static void sdl_newmap(void)
 353 {
 354 }
 355 #endif
 356
 357 static keynum_t buttonremap[18] =
 358 {
 359         K_MOUSE1,
 360         K_MOUSE3,
 361         K_MOUSE2,
 362         K_MWHEELUP,
 363         K_MWHEELDOWN,
 364         K_MOUSE4,
 365         K_MOUSE5,
 366         K_MOUSE6,
 367         K_MOUSE7,
 368         K_MOUSE8,
 369         K_MOUSE9,
 370         K_MOUSE10,
 371         K_MOUSE11,
 372         K_MOUSE12,
 373         K_MOUSE13,
 374         K_MOUSE14,
 375         K_MOUSE15,
 376         K_MOUSE16,
 377 };
 378
 379 void Sys_SendKeyEvents( void )
 380 {
 381         static qboolean sound_active = true;
 382         SDL_Event event;
 383
 384         while( SDL_PollEvent( &event ) )
 385                 switch( event.type ) {
 386                         case SDL_QUIT:
 387                                 Sys_Quit(0);
 388                                 break;
 389                         case SDL_KEYDOWN:
 390                         case SDL_KEYUP:
 391                                 //Con_Printf("Key: %lu\n", (long unsigned int)event.key.keysym.unicode);
 392                                 Key_Event( MapKey( event.key.keysym.sym ), event.key.keysym.unicode, (event.key.state == SDL_PRESSED) );
 393                                 break;
 394                         case SDL_ACTIVEEVENT:
 395                                 if( event.active.state & SDL_APPACTIVE )
 396                                 {
 397                                         if( event.active.gain )
 398                                                 vid_hidden = false;
 399                                         else
 400                                                 vid_hidden = true;
 401                                 }
 402                                 break;
 403                         case SDL_MOUSEBUTTONDOWN:
 404                         case SDL_MOUSEBUTTONUP:
 405                                 if (event.button.button <= 18)
 406                                         Key_Event( buttonremap[event.button.button - 1], 0, event.button.state == SDL_PRESSED );
 407                                 break;
 408                         case SDL_JOYBUTTONDOWN:
 409                                 if (!joy_enable.integer)
 410                                         break; // ignore down events if joystick has been disabled
 411                         case SDL_JOYBUTTONUP:
 412                                 if (event.jbutton.button < 48)
 413                                         Key_Event( event.jbutton.button + (event.jbutton.button < 16 ? K_JOY1 : K_AUX1 - 16), 0, (event.jbutton.state == SDL_PRESSED) );
 414                                 break;
 415                         case SDL_VIDEORESIZE:
 416                                 if(vid_resizable.integer < 2)
 417                                 {
 418                                         vid.width = event.resize.w;
 419                                         vid.height = event.resize.h;
 420                                         SDL_SetVideoMode(vid.width, vid.height, video_bpp, video_flags);
 421 #ifdef SDL_R_RESTART
 422                                         // better not call R_Modules_Restart from here directly, as this may wreak havoc...
 423                                         // so, let's better queue it for next frame
 424                                         if(!sdl_needs_restart)
 425                                         {
 426                                                 Cbuf_AddText("\nr_restart\n");
 427                                                 sdl_needs_restart = true;
 428                                         }
 429 #endif
 430                                 }
 431                                 break;
 432                 }
 433
 434         // enable/disable sound on focus gain/loss
 435         if ((!vid_hidden && vid_activewindow) || !snd_mutewhenidle.integer)
 436         {
 437                 if (!sound_active)
 438                 {
 439                         S_UnblockSound ();
 440                         sound_active = true;
 441                 }
 442         }
 443         else
 444         {
 445                 if (sound_active)
 446                 {
 447                         S_BlockSound ();
 448                         sound_active = false;
 449                 }
 450         }
 451 }
 452
 453 /////////////////
 454 // Video system
 455 ////
 456
 457 void *GL_GetProcAddress(const char *name)
 458 {
 459         void *p = NULL;
 460         p = SDL_GL_GetProcAddress(name);
 461         return p;
 462 }
 463
 464 static int Sys_EventFilter( SDL_Event *event );
 465 static qboolean vid_sdl_initjoysticksystem = false;
 466
 467 void VID_Init (void)
 468 {
 469         Cvar_RegisterVariable(&joy_detected);
 470         Cvar_RegisterVariable(&joy_enable);
 471         Cvar_RegisterVariable(&joy_index);
 472         Cvar_RegisterVariable(&joy_axisforward);
 473         Cvar_RegisterVariable(&joy_axisside);
 474         Cvar_RegisterVariable(&joy_axisup);
 475         Cvar_RegisterVariable(&joy_axispitch);
 476         Cvar_RegisterVariable(&joy_axisyaw);
 477         //Cvar_RegisterVariable(&joy_axisroll);
 478         Cvar_RegisterVariable(&joy_deadzoneforward);
 479         Cvar_RegisterVariable(&joy_deadzoneside);
 480         Cvar_RegisterVariable(&joy_deadzoneup);
 481         Cvar_RegisterVariable(&joy_deadzonepitch);
 482         Cvar_RegisterVariable(&joy_deadzoneyaw);
 483         //Cvar_RegisterVariable(&joy_deadzoneroll);
 484         Cvar_RegisterVariable(&joy_sensitivityforward);
 485         Cvar_RegisterVariable(&joy_sensitivityside);
 486         Cvar_RegisterVariable(&joy_sensitivityup);
 487         Cvar_RegisterVariable(&joy_sensitivitypitch);
 488         Cvar_RegisterVariable(&joy_sensitivityyaw);
 489         //Cvar_RegisterVariable(&joy_sensitivityroll);
 490
 491 #ifdef SDL_R_RESTART
 492         R_RegisterModule("SDL", sdl_start, sdl_shutdown, sdl_newmap);
 493 #endif
 494
 495         if (SDL_Init(SDL_INIT_VIDEO) < 0)
 496                 Sys_Error ("Failed to init SDL video subsystem: %s", SDL_GetError());
 497         vid_sdl_initjoysticksystem = SDL_Init(SDL_INIT_JOYSTICK) >= 0;
 498         if (vid_sdl_initjoysticksystem)
 499                 Con_Printf("Failed to init SDL joystick subsystem: %s\n", SDL_GetError());
 500         vid_isfullscreen = false;
 501 }
 502
 503 // set the icon (we dont use SDL here since it would be too much a PITA)
 504 #ifdef WIN32
 505 #include "resource.h"
 506 #include <SDL_syswm.h>
 507 static void VID_SetCaption(void)
 508 {
 509     SDL_SysWMinfo       info;
 510         HICON                   icon;
 511
 512         // set the caption
 513         SDL_WM_SetCaption( gamename, NULL );
 514
 515         // get the HWND handle
 516     SDL_VERSION( &info.version );
 517         if( !SDL_GetWMInfo( &info ) )
 518                 return;
 519
 520         icon = LoadIcon( GetModuleHandle( NULL ), MAKEINTRESOURCE( IDI_ICON1 ) );
 521 #ifndef _W64 //If Windows 64bit data types don't exist
 522 #ifndef SetClassLongPtr
 523 #define SetClassLongPtr SetClassLong
 524 #endif
 525 #ifndef GCLP_HICON
 526 #define GCLP_HICON GCL_HICON
 527 #endif
 528 #ifndef LONG_PTR
 529 #define LONG_PTR LONG
 530 #endif
 531 #endif
 532         SetClassLongPtr( info.window, GCLP_HICON, (LONG_PTR)icon );
 533 }
 534 static void VID_SetIcon(void)
 535 {
 536 }
 537 #else
 538 // Adding the OS independent XPM version --blub
 539 #include "darkplaces.xpm"
 540 #include "nexuiz.xpm"
 541 static SDL_Surface *icon = NULL;
 542 static void VID_SetIcon(void)
 543 {
 544         /*
 545          * Somewhat restricted XPM reader. Only supports XPMs saved by GIMP 2.4 at
 546          * default settings with less than 91 colors and transparency.
 547          */
 548
 549         int width, height, colors, isize, i, j;
 550         int thenone = -1;
 551         static SDL_Color palette[256];
 552         unsigned short palenc[256]; // store color id by char
 553
 554         char **idata = ENGINE_ICON;
 555         char *data = idata[0];
 556
 557         if(sscanf(data, "%i %i %i %i", &width, &height, &colors, &isize) != 4)
 558         {
 559                 // NOTE: Only 1-char colornames are supported
 560                 Con_Printf("Sorry, but this does not even look similar to an XPM.\n");
 561                 return;
 562         }
 563
 564         if(isize != 1)
 565         {
 566                 // NOTE: Only 1-char colornames are supported
 567                 Con_Printf("This XPM's palette is either huge or idiotically unoptimized. It's key size is %i\n", isize);
 568                 return;
 569         }
 570
 571         for(i = 0; i < colors; ++i)
 572         {
 573                 unsigned int r, g, b;
 574                 char idx;
 575
 576                 if(sscanf(idata[i+1], "%c c #%02x%02x%02x", &idx, &r, &g, &b) != 4)
 577                 {
 578                         char foo[2];
 579                         if(sscanf(idata[i+1], "%c c Non%1[e]", &idx, foo) != 2) // I take the DailyWTF credit for this. --div0
 580                         {
 581                                 Con_Printf("This XPM's palette looks odd. Can't continue.\n");
 582                                 return;
 583                         }
 584                         else
 585                         {
 586                                 palette[i].r = 255; // color key
 587                                 palette[i].g = 0;
 588                                 palette[i].b = 255;
 589                                 thenone = i; // weeeee
 590                         }
 591                 }
 592                 else
 593                 {
 594                         palette[i].r = r - (r == 255 && g == 0 && b == 255); // change 255/0/255 pink to 254/0/255 for color key
 595                         palette[i].g = g;
 596                         palette[i].b = b;
 597                 }
 598
 599                 palenc[(unsigned char) idx] = i;
 600         }
 601
 602         // allocate the image data
 603         data = (char*) malloc(width*height);
 604
 605         for(j = 0; j < height; ++j)
 606         {
 607                 for(i = 0; i < width; ++i)
 608                 {
 609                         // casting to the safest possible datatypes ^^
 610                         data[j * width + i] = palenc[((unsigned char*)idata[colors+j+1])[i]];
 611                 }
 612         }
 613
 614         if(icon != NULL)
 615         {
 616                 // SDL_FreeSurface should free the data too
 617                 // but for completeness' sake...
 618                 if(icon->flags & SDL_PREALLOC)
 619                 {
 620                         free(icon->pixels);
 621                         icon->pixels = NULL; // safety
 622                 }
 623                 SDL_FreeSurface(icon);
 624         }
 625
 626         icon = SDL_CreateRGBSurface(SDL_SRCCOLORKEY, width, height, 8, 0,0,0,0);// rmask, gmask, bmask, amask); no mask needed
 627         // 8 bit surfaces get an empty palette allocated according to the docs
 628         // so it's a palette image for sure :) no endian check necessary for the mask
 629
 630         if(icon == NULL) {
 631                 Con_Printf(     "Failed to create surface for the window Icon!\n"
 632                                 "%s\n", SDL_GetError());
 633                 free(data);
 634                 return;
 635         }
 636         icon->pixels = data;
 637         SDL_SetPalette(icon, SDL_PHYSPAL|SDL_LOGPAL, palette, 0, colors);
 638         SDL_SetColorKey(icon, SDL_SRCCOLORKEY, thenone);
 639
 640         SDL_WM_SetIcon(icon, NULL);
 641 }
 642
 643
 644 static void VID_SetCaption(void)
 645 {
 646         SDL_WM_SetCaption( gamename, NULL );
 647 }
 648 #endif
 649
 650 static void VID_OutputVersion(void)
 651 {
 652         const SDL_version *version;
 653         version = SDL_Linked_Version();
 654         Con_Printf(     "Linked against SDL version %d.%d.%d\n"
 655                                         "Using SDL library version %d.%d.%d\n",
 656                                         SDL_MAJOR_VERSION, SDL_MINOR_VERSION, SDL_PATCHLEVEL,
 657                                         version->major, version->minor, version->patch );
 658 }
 659
 660 qboolean VID_InitMode(viddef_mode_t *mode)
 661 {
 662         int i;
 663         static int notfirstvideomode = false;
 664         int flags = SDL_OPENGL;
 665         const char *drivername;
 666
 667         win_half_width = mode->width>>1;
 668         win_half_height = mode->height>>1;
 669
 670         if(vid_resizable.integer)
 671                 flags |= SDL_RESIZABLE;
 672
 673         VID_OutputVersion();
 674
 675         /*
 676         SDL Hack
 677                 We cant switch from one OpenGL video mode to another.
 678                 Thus we first switch to some stupid 2D mode and then back to OpenGL.
 679         */
 680         if (notfirstvideomode)
 681                 SDL_SetVideoMode( 0, 0, 0, 0 );
 682         notfirstvideomode = true;
 683
 684         // SDL usually knows best
 685         drivername = NULL;
 686
 687 // 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
 688         i = COM_CheckParm("-gl_driver");
 689         if (i && i < com_argc - 1)
 690                 drivername = com_argv[i + 1];
 691         if (SDL_GL_LoadLibrary(drivername) < 0)
 692         {
 693                 Con_Printf("Unable to load GL driver \"%s\": %s\n", drivername, SDL_GetError());
 694                 return false;
 695         }
 696
 697         if ((qglGetString = (const GLubyte* (GLAPIENTRY *)(GLenum name))GL_GetProcAddress("glGetString")) == NULL)
 698         {
 699                 VID_Shutdown();
 700                 Con_Print("Required OpenGL function glGetString not found\n");
 701                 return false;
 702         }
 703
 704         // Knghtbrd: should do platform-specific extension string function here
 705
 706         vid_isfullscreen = false;
 707         if (mode->fullscreen) {
 708                 flags |= SDL_FULLSCREEN;
 709                 vid_isfullscreen = true;
 710         }
 711         //flags |= SDL_HWSURFACE;
 712
 713         SDL_GL_SetAttribute (SDL_GL_DOUBLEBUFFER, 1);
 714         if (mode->bitsperpixel >= 32)
 715         {
 716                 SDL_GL_SetAttribute (SDL_GL_RED_SIZE, 8);
 717                 SDL_GL_SetAttribute (SDL_GL_GREEN_SIZE, 8);
 718                 SDL_GL_SetAttribute (SDL_GL_BLUE_SIZE, 8);
 719                 SDL_GL_SetAttribute (SDL_GL_ALPHA_SIZE, 8);
 720                 SDL_GL_SetAttribute (SDL_GL_DEPTH_SIZE, 24);
 721                 SDL_GL_SetAttribute (SDL_GL_STENCIL_SIZE, 8);
 722         }
 723         else
 724         {
 725                 SDL_GL_SetAttribute (SDL_GL_RED_SIZE, 5);
 726                 SDL_GL_SetAttribute (SDL_GL_GREEN_SIZE, 5);
 727                 SDL_GL_SetAttribute (SDL_GL_BLUE_SIZE, 5);
 728                 SDL_GL_SetAttribute (SDL_GL_DEPTH_SIZE, 16);
 729         }
 730         if (mode->stereobuffer)
 731                 SDL_GL_SetAttribute (SDL_GL_STEREO, 1);
 732         if (vid_vsync.integer)
 733                 SDL_GL_SetAttribute (SDL_GL_SWAP_CONTROL, 1);
 734         else
 735                 SDL_GL_SetAttribute (SDL_GL_SWAP_CONTROL, 0);
 736         if (mode->samples > 1)
 737         {
 738                 SDL_GL_SetAttribute (SDL_GL_MULTISAMPLEBUFFERS, 1);
 739                 SDL_GL_SetAttribute (SDL_GL_MULTISAMPLESAMPLES, mode->samples);
 740         }
 741
 742         video_bpp = mode->bitsperpixel;
 743         video_flags = flags;
 744         VID_SetIcon();
 745         screen = SDL_SetVideoMode(mode->width, mode->height, mode->bitsperpixel, flags);
 746
 747         if (screen == NULL)
 748         {
 749                 Con_Printf("Failed to set video mode to %ix%i: %s\n", mode->width, mode->height, SDL_GetError());
 750                 VID_Shutdown();
 751                 return false;
 752         }
 753
 754         // set window title
 755         VID_SetCaption();
 756         // set up an event filter to ask confirmation on close button in WIN32
 757         SDL_SetEventFilter( (SDL_EventFilter) Sys_EventFilter );
 758         // init keyboard
 759         SDL_EnableUNICODE( SDL_ENABLE );
 760         // enable key repeat since everyone expects it
 761         SDL_EnableKeyRepeat(SDL_DEFAULT_REPEAT_DELAY, SDL_DEFAULT_REPEAT_INTERVAL);
 762
 763         gl_platform = "SDL";
 764         gl_platformextensions = "";
 765
 766         GL_Init();
 767
 768         vid_numjoysticks = SDL_NumJoysticks();
 769         vid_numjoysticks = bound(0, vid_numjoysticks, MAX_JOYSTICKS);
 770         Cvar_SetValueQuick(&joy_detected, vid_numjoysticks);
 771         Con_Printf("%d SDL joystick(s) found:\n", vid_numjoysticks);
 772         memset(vid_joysticks, 0, sizeof(vid_joysticks));
 773         for (i = 0;i < vid_numjoysticks;i++)
 774         {
 775                 SDL_Joystick *joy;
 776                 joy = vid_joysticks[i] = SDL_JoystickOpen(i);
 777                 if (!joy)
 778                 {
 779                         Con_Printf("joystick #%i: open failed: %s\n", i, SDL_GetError());
 780                         continue;
 781                 }
 782                 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));
 783         }
 784
 785         vid_hidden = false;
 786         vid_activewindow = false;
 787         vid_usingmouse = false;
 788         vid_usinghidecursor = false;
 789
 790         SDL_WM_GrabInput(SDL_GRAB_OFF);
 791         return true;
 792 }
 793
 794 void VID_Shutdown (void)
 795 {
 796         VID_SetMouse(false, false, false);
 797         VID_RestoreSystemGamma();
 798
 799         SDL_QuitSubSystem(SDL_INIT_VIDEO);
 800
 801         gl_driver[0] = 0;
 802         gl_extensions = "";
 803         gl_platform = "";
 804         gl_platformextensions = "";
 805 }
 806
 807 int VID_SetGamma (unsigned short *ramps, int rampsize)
 808 {
 809         return !SDL_SetGammaRamp (ramps, ramps + rampsize, ramps + rampsize*2);
 810 }
 811
 812 int VID_GetGamma (unsigned short *ramps, int rampsize)
 813 {
 814         return !SDL_GetGammaRamp (ramps, ramps + rampsize, ramps + rampsize*2);
 815 }
 816
 817 void VID_Finish (void)
 818 {
 819         Uint8 appstate;
 820
 821         //react on appstate changes
 822         appstate = SDL_GetAppState();
 823
 824         vid_hidden = !(appstate & SDL_APPACTIVE);
 825
 826         if( vid_hidden || !( appstate & SDL_APPMOUSEFOCUS ) || !( appstate & SDL_APPINPUTFOCUS ) )
 827                 vid_activewindow = false;
 828         else
 829                 vid_activewindow = true;
 830
 831         VID_UpdateGamma(false, 256);
 832
 833         if (!vid_hidden)
 834         {
 835                 CHECKGLERROR
 836                 if (r_speeds.integer == 2 || gl_finish.integer)
 837                 {
 838                         qglFinish();CHECKGLERROR
 839                 }
 840                 SDL_GL_SwapBuffers();
 841         }
 842 }
 843
 844 size_t VID_ListModes(vid_mode_t *modes, size_t maxcount)
 845 {
 846         size_t k;
 847         SDL_Rect **vidmodes;
 848         int bpp = SDL_GetVideoInfo()->vfmt->BitsPerPixel;
 849
 850         k = 0;
 851         for(vidmodes = SDL_ListModes(NULL, SDL_FULLSCREEN|SDL_HWSURFACE); *vidmodes; ++vidmodes)
 852         {
 853                 if(k >= maxcount)
 854                         break;
 855                 modes[k].width = (*vidmodes)->w;
 856                 modes[k].height = (*vidmodes)->h;
 857                 modes[k].bpp = bpp;
 858                 modes[k].refreshrate = 60; // no support for refresh rate in SDL
 859                 modes[k].pixelheight_num = 1;
 860                 modes[k].pixelheight_denom = 1; // SDL does not provide this
 861                 ++k;
 862         }
 863         return k;
 864 }