src/glut/glx/glutint.h

   1 #ifndef __glutint_h__
   2 #define __glutint_h__
   3
   4 /* Copyright (c) Mark J. Kilgard, 1994, 1997, 1998. */
   5
   6 /* This program is freely distributable without licensing fees
   7    and is provided without guarantee or warrantee expressed or
   8    implied. This program is -not- in the public domain. */
   9
  10 #ifdef __VMS
  11 #include <GL/vms_x_fix.h>
  12 #endif
  13
  14 #if defined(__CYGWIN32__)
  15 #include <sys/time.h>
  16 #endif
  17
  18 #define SUPPORT_FORTRAN  /* With GLUT 3.7, everyone supports Fortran. */
  19
  20 #if defined(_WIN32)
  21 #include "glutwin32.h"
  22 #else
  23 #include <X11/Xlib.h>
  24 #include <X11/Xutil.h>
  25 #define GLX_GLXEXT_PROTOTYPES
  26 #include <GL/glx.h>
  27 #endif
  28
  29 #define GLUT_BUILDING_LIB  /* Building the GLUT library itself. */
  30 #include <GL/glut.h>
  31
  32 #if defined(MESA) && defined(_WIN32) && !defined(__CYGWIN32__)
  33 #include <gl/mesa_wgl.h>
  34 #endif
  35
  36 #ifndef _WIN32
  37 /* added by BrianP: */
  38 #ifndef APIENTRY
  39 #define APIENTRY GLAPIENTRY
  40 #endif
  41 #define __cdecl GLAPIENTRY
  42 #define CDECL GLAPIENTRY
  43 #endif
  44
  45 /* GLUT_BUILDING_LIB is used by <GL/glut.h> to 1) not #pragma link
  46    with the GLUT library, and 2) avoid the Win32 atexit hack. */
  47
  48 /* This must be done after <GL/gl.h> is included.  MESA is defined
  49    if the <GL/gl.h> is supplied by Brian Paul's Mesa library. */
  50 #if defined(MESA) && defined(_WIN32)
  51 /* Mesa implements "wgl" versions of GDI entry points needed for
  52    using OpenGL.  Map these "wgl" versions to the GDI names via
  53    macros. */
  54 #define ChoosePixelFormat   wglChoosePixelFormat
  55 #define DescribePixelFormat wglDescribePixelFormat
  56 #define GetPixelFormat      wglGetPixelFormat
  57 #define SetPixelFormat      wglSetPixelFormat
  58 #define SwapBuffers         wglSwapBuffers
  59 #define GetCurrentContext   wglGetCurrentContext
  60 #define GetCurrentDC        wglGetCurrentDC
  61 #define MakeCurrent         wglMakeCurrent
  62 #define CreateContext       wglCreateContext
  63 #define DeleteContext       wglDeleteContext
  64 #endif /* MESA */
  65
  66 #ifdef SUPPORT_FORTRAN
  67 #include <GL/glutf90.h>
  68 #endif
  69
  70 #ifdef __vms
  71 #if ( __VMS_VER < 70000000 )
  72 #define OLD_VMS
  73 struct timeval6 {
  74   __int64 val;
  75 };
  76 extern int sys$gettim(struct timeval6 *);
  77 #else
  78 #include <time.h>
  79 #endif
  80 #else
  81 #include <sys/types.h>
  82 #if !defined(_WIN32) || defined(__CYGWIN32__)
  83 #include <sys/time.h>
  84 #else
  85 #include <winsock.h>
  86 #endif
  87 #endif
  88 #if defined(__vms) && ( __VMS_VER < 70000000 )
  89
  90 /* For VMS6.2 or lower :
  91    One TICK on VMS is 100 nanoseconds; 0.1 microseconds or
  92    0.0001 milliseconds. This means that there are 0.01
  93    ticks/ns, 10 ticks/us, 10,000 ticks/ms and 10,000,000
  94    ticks/second. */
  95
  96 #define TICKS_PER_MILLISECOND 10000
  97 #define TICKS_PER_SECOND      10000000
  98
  99 #define GETTIMEOFDAY(_x) (void) sys$gettim (_x);
 100
 101 #define ADD_TIME(dest, src1, src2) { \
 102   (dest).val = (src1).val + (src2).val; \
 103 }
 104
 105 #define TIMEDELTA(dest, src1, src2) { \
 106   (dest).val = (src1).val - (src2).val; \
 107 }
 108
 109 #define IS_AFTER(t1, t2) ((t2).val > (t1).val)
 110
 111 #define IS_AT_OR_AFTER(t1, t2) ((t2).val >= (t1).val)
 112
 113 #else
 114 #if defined(SVR4) && !defined(sun)  /* Sun claims SVR4, but
 115                                        wants 2 args. */
 116 #define GETTIMEOFDAY(_x) gettimeofday(_x)
 117 #else
 118 #define GETTIMEOFDAY(_x) gettimeofday(_x, NULL)
 119 #endif
 120 #define ADD_TIME(dest, src1, src2) { \
 121   if(((dest).tv_usec = \
 122     (src1).tv_usec + (src2).tv_usec) >= 1000000) { \
 123     (dest).tv_usec -= 1000000; \
 124     (dest).tv_sec = (src1).tv_sec + (src2).tv_sec + 1; \
 125   } else { \
 126     (dest).tv_sec = (src1).tv_sec + (src2).tv_sec; \
 127     if(((dest).tv_sec >= 1) && (((dest).tv_usec <0))) { \
 128       (dest).tv_sec --;(dest).tv_usec += 1000000; \
 129     } \
 130   } \
 131 }
 132 #define TIMEDELTA(dest, src1, src2) { \
 133   if(((dest).tv_usec = (src1).tv_usec - (src2).tv_usec) < 0) { \
 134     (dest).tv_usec += 1000000; \
 135     (dest).tv_sec = (src1).tv_sec - (src2).tv_sec - 1; \
 136   } else { \
 137      (dest).tv_sec = (src1).tv_sec - (src2).tv_sec; \
 138   } \
 139 }
 140 #define IS_AFTER(t1, t2) \
 141   (((t2).tv_sec > (t1).tv_sec) || \
 142   (((t2).tv_sec == (t1).tv_sec) && \
 143   ((t2).tv_usec > (t1).tv_usec)))
 144 #define IS_AT_OR_AFTER(t1, t2) \
 145   (((t2).tv_sec > (t1).tv_sec) || \
 146   (((t2).tv_sec == (t1).tv_sec) && \
 147   ((t2).tv_usec >= (t1).tv_usec)))
 148 #endif
 149
 150 #define IGNORE_IN_GAME_MODE() \
 151   { if (__glutGameModeWindow) return; }
 152
 153 #define GLUT_WIND_IS_RGB(x)         (((x) & GLUT_INDEX) == 0)
 154 #define GLUT_WIND_IS_INDEX(x)       (((x) & GLUT_INDEX) != 0)
 155 #define GLUT_WIND_IS_SINGLE(x)      (((x) & GLUT_DOUBLE) == 0)
 156 #define GLUT_WIND_IS_DOUBLE(x)      (((x) & GLUT_DOUBLE) != 0)
 157 #define GLUT_WIND_HAS_ACCUM(x)      (((x) & GLUT_ACCUM) != 0)
 158 #define GLUT_WIND_HAS_ALPHA(x)      (((x) & GLUT_ALPHA) != 0)
 159 #define GLUT_WIND_HAS_DEPTH(x)      (((x) & GLUT_DEPTH) != 0)
 160 #define GLUT_WIND_HAS_STENCIL(x)    (((x) & GLUT_STENCIL) != 0)
 161 #define GLUT_WIND_IS_MULTISAMPLE(x) (((x) & GLUT_MULTISAMPLE) != 0)
 162 #define GLUT_WIND_IS_STEREO(x)      (((x) & GLUT_STEREO) != 0)
 163 #define GLUT_WIND_IS_LUMINANCE(x)   (((x) & GLUT_LUMINANCE) != 0)
 164 #define GLUT_MAP_WORK               (1 << 0)
 165 #define GLUT_EVENT_MASK_WORK        (1 << 1)
 166 #define GLUT_REDISPLAY_WORK         (1 << 2)
 167 #define GLUT_CONFIGURE_WORK         (1 << 3)
 168 #define GLUT_COLORMAP_WORK          (1 << 4)
 169 #define GLUT_DEVICE_MASK_WORK       (1 << 5)
 170 #define GLUT_FINISH_WORK            (1 << 6)
 171 #define GLUT_DEBUG_WORK             (1 << 7)
 172 #define GLUT_DUMMY_WORK             (1 << 8)
 173 #define GLUT_FULL_SCREEN_WORK       (1 << 9)
 174 #define GLUT_OVERLAY_REDISPLAY_WORK (1 << 10)
 175 #define GLUT_REPAIR_WORK            (1 << 11)
 176 #define GLUT_OVERLAY_REPAIR_WORK    (1 << 12)
 177
 178 /* Frame buffer capability macros and types. */
 179 #define RGBA                    0
 180 #define BUFFER_SIZE             1
 181 #define DOUBLEBUFFER            2
 182 #define STEREO                  3
 183 #define AUX_BUFFERS             4
 184 #define RED_SIZE                5  /* Used as mask bit for
 185                                       "color selected". */
 186 #define GREEN_SIZE              6
 187 #define BLUE_SIZE               7
 188 #define ALPHA_SIZE              8
 189 #define DEPTH_SIZE              9
 190 #define STENCIL_SIZE            10
 191 #define ACCUM_RED_SIZE          11  /* Used as mask bit for
 192                                        "acc selected". */
 193 #define ACCUM_GREEN_SIZE        12
 194 #define ACCUM_BLUE_SIZE         13
 195 #define ACCUM_ALPHA_SIZE        14
 196 #define LEVEL                   15
 197
 198 #define NUM_GLXCAPS             (LEVEL + 1)
 199
 200 #define XVISUAL                 (NUM_GLXCAPS + 0)
 201 #define TRANSPARENT             (NUM_GLXCAPS + 1)
 202 #define SAMPLES                 (NUM_GLXCAPS + 2)
 203 #define XSTATICGRAY             (NUM_GLXCAPS + 3)  /* Used as
 204                                                       mask bit
 205                                                       for "any
 206                                                       visual type
 207                                                       selected". */
 208 #define XGRAYSCALE              (NUM_GLXCAPS + 4)
 209 #define XSTATICCOLOR            (NUM_GLXCAPS + 5)
 210 #define XPSEUDOCOLOR            (NUM_GLXCAPS + 6)
 211 #define XTRUECOLOR              (NUM_GLXCAPS + 7)
 212 #define XDIRECTCOLOR            (NUM_GLXCAPS + 8)
 213 #define SLOW                    (NUM_GLXCAPS + 9)
 214 #define CONFORMANT              (NUM_GLXCAPS + 10)
 215
 216 #define NUM_CAPS                (NUM_GLXCAPS + 11)
 217
 218 /* Frame buffer capablities that don't have a corresponding
 219    FrameBufferMode entry.  These get used as mask bits. */
 220 #define NUM                     (NUM_CAPS + 0)
 221 #define RGBA_MODE               (NUM_CAPS + 1)
 222 #define CI_MODE                 (NUM_CAPS + 2)
 223 #define LUMINANCE_MODE          (NUM_CAPS + 3)
 224
 225 #define NONE                    0
 226 #define EQ                      1
 227 #define NEQ                     2
 228 #define LTE                     3
 229 #define GTE                     4
 230 #define GT                      5
 231 #define LT                      6
 232 #define MIN                     7
 233
 234 typedef struct _Criterion {
 235   int capability;
 236   int comparison;
 237   int value;
 238 } Criterion;
 239
 240 typedef struct _FrameBufferMode {
 241   XVisualInfo *vi;
 242 #if defined(GLX_VERSION_1_1) && defined(GLX_SGIX_fbconfig)
 243
 244   /* fbc is non-NULL when the XVisualInfo* is not OpenGL-capable
 245      (ie, GLX_USE_GL is false), but the SGIX_fbconfig extension shows
 246      the visual's fbconfig is OpenGL-capable.  The reason for this is typically
 247      an RGBA luminance fbconfig such as 16-bit StaticGray that could
 248      not be advertised as a GLX visual since StaticGray visuals are
 249      required (by the GLX specification) to be color index.  The
 250      SGIX_fbconfig allows StaticGray visuals to instead advertised as
 251      fbconfigs that can provide RGBA luminance support. */
 252
 253   GLXFBConfigSGIX fbc;
 254 #endif
 255   int valid;
 256   int cap[NUM_CAPS];
 257 } FrameBufferMode;
 258
 259 /* DisplayMode capability macros for game mode. */
 260 #define DM_WIDTH        0  /* "width" */
 261 #define DM_HEIGHT       1  /* "height" */
 262 #define DM_PIXEL_DEPTH  2  /* "bpp" (bits per pixel) */
 263 #define DM_HERTZ        3  /* "hertz" */
 264 #define DM_NUM          4  /* "num" */
 265
 266 #define NUM_DM_CAPS     (DM_NUM+1)
 267
 268 typedef struct _DisplayMode {
 269 #ifdef _WIN32
 270   DEVMODE devmode;
 271 #else
 272   /* XXX The X Window System does not have a standard
 273      mechanism for display setting changes.  On SGI
 274      systems, GLUT could use the XSGIvc (SGI X video
 275      control extension).  Perhaps this can be done in
 276      a future release of GLUT. */
 277 #endif
 278   int valid;
 279   int cap[NUM_DM_CAPS];
 280 } DisplayMode;
 281
 282 /* GLUT  function types */
 283 typedef void (GLUTCALLBACK *GLUTdisplayCB) (void);
 284 typedef void (GLUTCALLBACK *GLUTreshapeCB) (int, int);
 285 typedef void (GLUTCALLBACK *GLUTkeyboardCB) (unsigned char, int, int);
 286 typedef void (GLUTCALLBACK *GLUTmouseCB) (int, int, int, int);
 287 typedef void (GLUTCALLBACK *GLUTmotionCB) (int, int);
 288 typedef void (GLUTCALLBACK *GLUTpassiveCB) (int, int);
 289 typedef void (GLUTCALLBACK *GLUTentryCB) (int);
 290 typedef void (GLUTCALLBACK *GLUTvisibilityCB) (int);
 291 typedef void (GLUTCALLBACK *GLUTwindowStatusCB) (int);
 292 typedef void (GLUTCALLBACK *GLUTidleCB) (void);
 293 typedef void (GLUTCALLBACK *GLUTtimerCB) (int);
 294 typedef void (GLUTCALLBACK *GLUTmenuStateCB) (int);  /* DEPRICATED. */
 295 typedef void (GLUTCALLBACK *GLUTmenuStatusCB) (int, int, int);
 296 typedef void (GLUTCALLBACK *GLUTselectCB) (int);
 297 typedef void (GLUTCALLBACK *GLUTspecialCB) (int, int, int);
 298 typedef void (GLUTCALLBACK *GLUTspaceMotionCB) (int, int, int);
 299 typedef void (GLUTCALLBACK *GLUTspaceRotateCB) (int, int, int);
 300 typedef void (GLUTCALLBACK *GLUTspaceButtonCB) (int, int);
 301 typedef void (GLUTCALLBACK *GLUTdialsCB) (int, int);
 302 typedef void (GLUTCALLBACK *GLUTbuttonBoxCB) (int, int);
 303 typedef void (GLUTCALLBACK *GLUTtabletMotionCB) (int, int);
 304 typedef void (GLUTCALLBACK *GLUTtabletButtonCB) (int, int, int, int);
 305 typedef void (GLUTCALLBACK *GLUTjoystickCB) (unsigned int buttonMask, int x, int y, int z);
 306
 307 typedef struct _GLUTcolorcell GLUTcolorcell;
 308 struct _GLUTcolorcell {
 309   /* GLUT_RED, GLUT_GREEN, GLUT_BLUE */
 310   GLfloat component[3];
 311 };
 312
 313 typedef struct _GLUTcolormap GLUTcolormap;
 314 struct _GLUTcolormap {
 315   Visual *visual;       /* visual of the colormap */
 316   Colormap cmap;        /* X colormap ID */
 317   int refcnt;           /* number of windows using colormap */
 318   int size;             /* number of cells in colormap */
 319   int transparent;      /* transparent pixel, or -1 if opaque */
 320   GLUTcolorcell *cells; /* array of cells */
 321   GLUTcolormap *next;   /* next colormap in list */
 322 };
 323
 324 typedef struct _GLUTwindow GLUTwindow;
 325 typedef struct _GLUToverlay GLUToverlay;
 326 struct _GLUTwindow {
 327   int num;              /* Small integer window id (0-based). */
 328
 329   /* Window system related state. */
 330 #if defined(_WIN32)
 331   int pf;               /* Pixel format. */
 332   HDC hdc;              /* Window's Win32 device context. */
 333 #endif
 334   Window win;           /* X window for GLUT window */
 335   GLXContext ctx;       /* OpenGL context GLUT glut window */
 336   XVisualInfo *vis;     /* visual for window */
 337   Bool visAlloced;      /* if vis needs deallocate on destroy */
 338   Colormap cmap;        /* RGB colormap for window; None if CI */
 339   GLUTcolormap *colormap;  /* colormap; NULL if RGBA */
 340   GLUToverlay *overlay; /* overlay; NULL if no overlay */
 341 #if defined(_WIN32)
 342   HDC renderDc;         /* Win32's device context for rendering. */
 343 #endif
 344   Window renderWin;     /* X window for rendering (might be
 345                            overlay) */
 346   GLXContext renderCtx; /* OpenGL context for rendering (might
 347                            be overlay) */
 348   /* GLUT settable or visible window state. */
 349   int width;            /* window width in pixels */
 350   int height;           /* window height in pixels */
 351   int cursor;           /* cursor name */
 352   int visState;         /* visibility state (-1 is unknown) */
 353   int shownState;       /* if window mapped */
 354   int entryState;       /* entry state (-1 is unknown) */
 355 #define GLUT_MAX_MENUS              3
 356
 357   int menu[GLUT_MAX_MENUS];  /* attatched menu nums */
 358   /* Window relationship state. */
 359   GLUTwindow *parent;   /* parent window */
 360   GLUTwindow *children; /* list of children */
 361   GLUTwindow *siblings; /* list of siblings */
 362   /* Misc. non-API visible (hidden) state. */
 363   Bool treatAsSingle;   /* treat this window as single-buffered
 364                            (it might be "fake" though) */
 365   Bool forceReshape;    /* force reshape before display */
 366 #if !defined(_WIN32)
 367   Bool isDirect;        /* if direct context (X11 only) */
 368 #endif
 369   Bool usedSwapBuffers; /* if swap buffers used last display */
 370   long eventMask;       /* mask of X events selected for */
 371   int buttonUses;       /* number of button uses, ref cnt */
 372   int tabletPos[2];     /* tablet position (-1 is invalid) */
 373   /* Work list related state. */
 374   unsigned int workMask;  /* mask of window work to be done */
 375   GLUTwindow *prevWorkWin;  /* link list of windows to work on */
 376   Bool desiredMapState; /* how to mapped window if on map work
 377                            list */
 378   Bool ignoreKeyRepeat;  /* if window ignores autorepeat */
 379   int desiredConfMask;  /* mask of desired window configuration
 380                          */
 381   int desiredX;         /* desired X location */
 382   int desiredY;         /* desired Y location */
 383   int desiredWidth;     /* desired window width */
 384   int desiredHeight;    /* desired window height */
 385   int desiredStack;     /* desired window stack */
 386   /* Per-window callbacks. */
 387   GLUTdisplayCB display;  /* redraw */
 388   GLUTreshapeCB reshape;  /* resize (width,height) */
 389   GLUTmouseCB mouse;    /* mouse (button,state,x,y) */
 390   GLUTmotionCB motion;  /* motion (x,y) */
 391   GLUTpassiveCB passive;  /* passive motion (x,y) */
 392   GLUTentryCB entry;    /* window entry/exit (state) */
 393   GLUTkeyboardCB keyboard;  /* keyboard (ASCII,x,y) */
 394   GLUTkeyboardCB keyboardUp;  /* keyboard up (ASCII,x,y) */
 395   GLUTwindowStatusCB windowStatus;  /* window status */
 396   GLUTvisibilityCB visibility;  /* visibility */
 397   GLUTspecialCB special;  /* special key */
 398   GLUTspecialCB specialUp;  /* special up key */
 399   GLUTbuttonBoxCB buttonBox;  /* button box */
 400   GLUTdialsCB dials;    /* dials */
 401   GLUTspaceMotionCB spaceMotion;  /* Spaceball motion */
 402   GLUTspaceRotateCB spaceRotate;  /* Spaceball rotate */
 403   GLUTspaceButtonCB spaceButton;  /* Spaceball button */
 404   GLUTtabletMotionCB tabletMotion;  /* tablet motion */
 405   GLUTtabletButtonCB tabletButton;  /* tablet button */
 406 #ifdef _WIN32
 407   GLUTjoystickCB joystick;  /* joystick */
 408   int joyPollInterval; /* joystick polling interval */
 409 #endif
 410 #ifdef SUPPORT_FORTRAN
 411   GLUTdisplayFCB fdisplay;  /* Fortran display  */
 412   GLUTreshapeFCB freshape;  /* Fortran reshape  */
 413   GLUTmouseFCB fmouse;  /* Fortran mouse  */
 414   GLUTmotionFCB fmotion;  /* Fortran motion  */
 415   GLUTpassiveFCB fpassive;  /* Fortran passive  */
 416   GLUTentryFCB fentry;  /* Fortran entry  */
 417   GLUTkeyboardFCB fkeyboard;  /* Fortran keyboard  */
 418   GLUTkeyboardFCB fkeyboardUp;  /* Fortran keyboard up */
 419   GLUTwindowStatusFCB fwindowStatus;  /* Fortran window status */
 420   GLUTvisibilityFCB fvisibility;  /* Fortran visibility */
 421   GLUTspecialFCB fspecial;  /* special key */
 422   GLUTspecialFCB fspecialUp;  /* special key up */
 423   GLUTbuttonBoxFCB fbuttonBox;  /* button box */
 424   GLUTdialsFCB fdials;  /* dials */
 425   GLUTspaceMotionFCB fspaceMotion;  /* Spaceball motion */
 426   GLUTspaceRotateFCB fspaceRotate;  /* Spaceball rotate */
 427   GLUTspaceButtonFCB fspaceButton;  /* Spaceball button */
 428   GLUTtabletMotionFCB ftabletMotion;  /* tablet motion */
 429   GLUTtabletButtonFCB ftabletButton;  /* tablet button */
 430 #ifdef _WIN32
 431   GLUTjoystickFCB fjoystick;  /* joystick */
 432 #endif
 433 #endif
 434 };
 435
 436 struct _GLUToverlay {
 437 #if defined(_WIN32)
 438   int pf;
 439   HDC hdc;
 440 #endif
 441   Window win;
 442   GLXContext ctx;
 443   XVisualInfo *vis;     /* visual for window */
 444   Bool visAlloced;      /* if vis needs deallocate on destroy */
 445   Colormap cmap;        /* RGB colormap for window; None if CI */
 446   GLUTcolormap *colormap;  /* colormap; NULL if RGBA */
 447   int shownState;       /* if overlay window mapped */
 448   Bool treatAsSingle;   /* treat as single-buffered */
 449 #if !defined(_WIN32)
 450   Bool isDirect;        /* if direct context */
 451 #endif
 452   int transparentPixel; /* transparent pixel value */
 453   GLUTdisplayCB display;  /* redraw  */
 454 #ifdef SUPPORT_FORTRAN
 455   GLUTdisplayFCB fdisplay;  /* redraw  */
 456 #endif
 457 };
 458
 459 typedef struct _GLUTstale GLUTstale;
 460 struct _GLUTstale {
 461   GLUTwindow *window;
 462   Window win;
 463   GLUTstale *next;
 464 };
 465
 466 extern GLUTstale *__glutStaleWindowList;
 467
 468 #define GLUT_OVERLAY_EVENT_FILTER_MASK \
 469   (ExposureMask | \
 470   StructureNotifyMask | \
 471   EnterWindowMask | \
 472   LeaveWindowMask)
 473 #define GLUT_DONT_PROPAGATE_FILTER_MASK \
 474   (ButtonReleaseMask | \
 475   ButtonPressMask | \
 476   KeyPressMask | \
 477   KeyReleaseMask | \
 478   PointerMotionMask | \
 479   Button1MotionMask | \
 480   Button2MotionMask | \
 481   Button3MotionMask)
 482 #define GLUT_HACK_STOP_PROPAGATE_MASK \
 483   (KeyPressMask | \
 484   KeyReleaseMask)
 485
 486 typedef struct _GLUTmenu GLUTmenu;
 487 typedef struct _GLUTmenuItem GLUTmenuItem;
 488 struct _GLUTmenu {
 489   int id;               /* small integer menu id (0-based) */
 490   Window win;           /* X window for the menu */
 491   GLUTselectCB select;  /*  function of menu */
 492   GLUTmenuItem *list;   /* list of menu entries */
 493   int num;              /* number of entries */
 494 #if !defined(_WIN32)
 495   Bool managed;         /* are the InputOnly windows size
 496                            validated? */
 497   Bool searched;        /* help detect menu loops */
 498   int pixheight;        /* height of menu in pixels */
 499   int pixwidth;         /* width of menu in pixels */
 500 #endif
 501   int submenus;         /* number of submenu entries */
 502   GLUTmenuItem *highlighted;  /* pointer to highlighted menu
 503                                  entry, NULL not highlighted */
 504   GLUTmenu *cascade;    /* currently cascading this menu  */
 505   GLUTmenuItem *anchor; /* currently anchored to this entry */
 506   int x;                /* current x origin relative to the
 507                            root window */
 508   int y;                /* current y origin relative to the
 509                            root window */
 510 #ifdef SUPPORT_FORTRAN
 511   GLUTselectFCB fselect;  /*  function of menu */
 512 #endif
 513 };
 514
 515 struct _GLUTmenuItem {
 516   Window win;           /* InputOnly X window for entry */
 517   GLUTmenu *menu;       /* menu entry belongs to */
 518   Bool isTrigger;       /* is a submenu trigger? */
 519   int value;            /* value to return for selecting this
 520                            entry; doubles as submenu id
 521                            (0-base) if submenu trigger */
 522 #if defined(_WIN32)
 523   UINT unique;          /* unique menu item id (Win32 only) */
 524 #endif
 525   char *label;          /* __glutStrdup'ed label string */
 526   int len;              /* length of label string */
 527   int pixwidth;         /* width of X window in pixels */
 528   GLUTmenuItem *next;   /* next menu entry on list for menu */
 529 };
 530
 531 typedef struct _GLUTtimer GLUTtimer;
 532 struct _GLUTtimer {
 533   GLUTtimer *next;      /* list of timers */
 534 #ifdef OLD_VMS
 535    struct timeval6 timeout;  /* time to be called */
 536 #else
 537    struct timeval timeout;  /* time to be called */
 538 #endif
 539    GLUTtimerCB func;     /* timer  (value) */
 540   int value;            /*  return value */
 541 #ifdef SUPPORT_FORTRAN
 542   GLUTtimerFCB ffunc;   /* Fortran timer  */
 543 #endif
 544 };
 545
 546 typedef struct _GLUTeventParser GLUTeventParser;
 547 struct _GLUTeventParser {
 548   int (*func) (XEvent *);
 549   GLUTeventParser *next;
 550 };
 551
 552 /* Declarations to implement glutFullScreen support with
 553    mwm/4Dwm. */
 554
 555 /* The following X property format is defined in Motif 1.1's
 556    Xm/MwmUtils.h, but GLUT should not depend on that header
 557    file. Note: Motif 1.2 expanded this structure with
 558    uninteresting fields (to GLUT) so just stick with the
 559    smaller Motif 1.1 structure. */
 560 typedef struct {
 561 #define MWM_HINTS_DECORATIONS   2
 562   long flags;
 563   long functions;
 564   long decorations;
 565   long input_mode;
 566 } MotifWmHints;
 567
 568 /* Make current and buffer swap macros. */
 569 #ifdef _WIN32
 570 #define MAKE_CURRENT_LAYER(window)                                    \
 571   {                                                                   \
 572     HGLRC currentContext = GetCurrentContext();                       \
 573     HDC currentDc = GetCurrentDC();                                   \
 574                                                                       \
 575     if (currentContext != window->renderCtx                           \
 576       || currentDc != window->renderDc) {                             \
 577       MakeCurrent(window->renderDc, window->renderCtx);               \
 578     }                                                                 \
 579   }
 580 #define MAKE_CURRENT_WINDOW(window)                                   \
 581   {                                                                   \
 582     HGLRC currentContext = GetCurrentContext();                       \
 583     HDC currentDc = GetCurrentDC();                                   \
 584                                                                       \
 585     if (currentContext != window->ctx || currentDc != window->hdc) {  \
 586       MakeCurrent(window->hdc, window->ctx);                          \
 587     }                                                                 \
 588   }
 589 #define MAKE_CURRENT_OVERLAY(overlay) \
 590   MakeCurrent(overlay->hdc, overlay->ctx)
 591 #define UNMAKE_CURRENT() \
 592   MakeCurrent(NULL, NULL)
 593 #define SWAP_BUFFERS_WINDOW(window) \
 594   SwapBuffers(window->hdc)
 595 #define SWAP_BUFFERS_LAYER(window) \
 596   SwapBuffers(window->renderDc)
 597 #else
 598 #define MAKE_CURRENT_LAYER(window) \
 599   glXMakeCurrent(__glutDisplay, window->renderWin, window->renderCtx)
 600 #define MAKE_CURRENT_WINDOW(window) \
 601   glXMakeCurrent(__glutDisplay, window->win, window->ctx)
 602 #define MAKE_CURRENT_OVERLAY(overlay) \
 603   glXMakeCurrent(__glutDisplay, overlay->win, overlay->ctx)
 604 #define UNMAKE_CURRENT() \
 605   glXMakeCurrent(__glutDisplay, None, NULL)
 606 #define SWAP_BUFFERS_WINDOW(window) \
 607   glXSwapBuffers(__glutDisplay, window->win)
 608 #define SWAP_BUFFERS_LAYER(window) \
 609   glXSwapBuffers(__glutDisplay, window->renderWin)
 610 #endif
 611
 612 /* private variables from glut_event.c */
 613 extern GLUTwindow *__glutWindowWorkList;
 614 extern int __glutWindowDamaged;
 615 #ifdef SUPPORT_FORTRAN
 616 extern GLUTtimer *__glutTimerList;
 617 extern GLUTtimer *__glutNewTimer;
 618 #endif
 619 extern GLUTmenu *__glutMappedMenu;
 620
 621 extern void (*__glutUpdateInputDeviceMaskFunc) (GLUTwindow *);
 622 #if !defined(_WIN32)
 623 extern void (*__glutMenuItemEnterOrLeave)(GLUTmenuItem * item,
 624   int num, int type);
 625 extern void (*__glutFinishMenu)(Window win, int x, int y);
 626 extern void (*__glutPaintMenu)(GLUTmenu * menu);
 627 extern void (*__glutStartMenu)(GLUTmenu * menu,
 628   GLUTwindow * window, int x, int y, int x_win, int y_win);
 629 extern GLUTmenu * (*__glutGetMenuByNum)(int menunum);
 630 extern GLUTmenuItem * (*__glutGetMenuItem)(GLUTmenu * menu,
 631   Window win, int *which);
 632 extern GLUTmenu * (*__glutGetMenu)(Window win);
 633 #endif
 634
 635 /* private variables from glut_init.c */
 636 extern Atom __glutWMDeleteWindow;
 637 extern Display *__glutDisplay;
 638 extern unsigned int __glutDisplayMode;
 639 extern char *__glutDisplayString;
 640 extern XVisualInfo *(*__glutDetermineVisualFromString) (char *string, Bool * treatAsSingle,
 641   Criterion * requiredCriteria, int nRequired, int requiredMask, void **fbc);
 642 extern GLboolean __glutDebug;
 643 extern GLboolean __glutForceDirect;
 644 extern GLboolean __glutIconic;
 645 extern GLboolean __glutTryDirect;
 646 extern Window __glutRoot;
 647 extern XSizeHints __glutSizeHints;
 648 extern char **__glutArgv;
 649 extern char *__glutProgramName;
 650 extern int __glutArgc;
 651 extern int __glutConnectionFD;
 652 extern int __glutInitHeight;
 653 extern int __glutInitWidth;
 654 extern int __glutInitX;
 655 extern int __glutInitY;
 656 extern int __glutScreen;
 657 extern int __glutScreenHeight;
 658 extern int __glutScreenWidth;
 659 extern Atom __glutMotifHints;
 660 extern unsigned int __glutModifierMask;
 661 #ifdef _WIN32
 662 extern void (__cdecl *__glutExitFunc)(int retval);
 663 #endif
 664
 665 /* private variables from glut_menu.c */
 666 extern GLUTmenuItem *__glutItemSelected;
 667 extern GLUTmenu **__glutMenuList;
 668 extern void (GLUTCALLBACK *__glutMenuStatusFunc) (int, int, int);
 669 extern void __glutMenuModificationError(void);
 670 extern void __glutSetMenuItem(GLUTmenuItem * item,
 671   const char *label, int value, Bool isTrigger);
 672
 673 /* private variables from glut_win.c */
 674 extern GLUTwindow **__glutWindowList;
 675 extern GLUTwindow *__glutCurrentWindow;
 676 extern GLUTwindow *__glutMenuWindow;
 677 extern GLUTmenu *__glutCurrentMenu;
 678 extern int __glutWindowListSize;
 679 extern void (*__glutFreeOverlayFunc) (GLUToverlay *);
 680 extern void __glutFreeOverlay(GLUToverlay * overlay);
 681 extern XVisualInfo *__glutDetermineWindowVisual(Bool * treatAsSingle,
 682   Bool * visAlloced, void **fbc);
 683
 684 /* private variables from glut_mesa.c */
 685 extern int __glutMesaSwapHackSupport;
 686
 687 /* private variables from glut_gamemode.c */
 688 extern GLUTwindow *__glutGameModeWindow;
 689
 690 /* private routines from glut_cindex.c */
 691 extern GLUTcolormap * __glutAssociateNewColormap(XVisualInfo * vis);
 692 extern void __glutFreeColormap(GLUTcolormap *);
 693
 694 /* private routines from glut_cmap.c */
 695 extern void __glutSetupColormap(
 696   XVisualInfo * vi,
 697   GLUTcolormap ** colormap,
 698   Colormap * cmap);
 699 #if !defined(_WIN32)
 700 extern void __glutEstablishColormapsProperty(
 701   GLUTwindow * window);
 702 extern GLUTwindow *__glutToplevelOf(GLUTwindow * window);
 703 #endif
 704
 705 /* private routines from glut_cursor.c */
 706 extern void __glutSetCursor(GLUTwindow *window);
 707
 708 /* private routines from glut_event.c */
 709 extern void __glutPutOnWorkList(GLUTwindow * window,
 710   int work_mask);
 711 extern void __glutRegisterEventParser(GLUTeventParser * parser);
 712 extern void __glutPostRedisplay(GLUTwindow * window, int layerMask);
 713 extern void handleTimeouts(void);
 714
 715 /* private routines from glut_init.c */
 716 #if !defined(_WIN32)
 717 extern void __glutOpenXConnection(char *display);
 718 #else
 719 extern void __glutOpenWin32Connection(char *display);
 720 #endif
 721 #ifdef OLD_VMS
 722 extern void __glutInitTime(struct timeval6 *beginning);
 723 #else
 724 extern void __glutInitTime(struct timeval *beginning);
 725 #endif
 726
 727 /* private routines for glut_menu.c (or win32_menu.c) */
 728 #if defined(_WIN32)
 729 extern GLUTmenu *__glutGetMenu(Window win);
 730 extern GLUTmenu *__glutGetMenuByNum(int menunum);
 731 extern GLUTmenuItem *__glutGetMenuItem(GLUTmenu * menu,
 732   Window win, int *which);
 733 extern void __glutStartMenu(GLUTmenu * menu,
 734   GLUTwindow * window, int x, int y, int x_win, int y_win);
 735 extern void __glutFinishMenu(Window win, int x, int y);
 736 #endif
 737 extern void __glutSetMenu(GLUTmenu * menu);
 738
 739 /* private routines from glut_util.c */
 740 extern char * __glutStrdup(const char *string);
 741 extern void __glutWarning(char *format,...);
 742 extern void __glutFatalError(char *format,...);
 743 extern void __glutFatalUsage(char *format,...);
 744
 745 /* private routines from glut_win.c */
 746 extern GLUTwindow *__glutGetWindow(Window win);
 747 extern void __glutChangeWindowEventMask(long mask, Bool add);
 748 extern XVisualInfo *__glutDetermineVisual(
 749   unsigned int mode,
 750   Bool * fakeSingle,
 751   XVisualInfo * (getVisualInfo) (unsigned int));
 752 extern XVisualInfo *__glutGetVisualInfo(unsigned int mode);
 753 extern void __glutSetWindow(GLUTwindow * window);
 754 extern void __glutReshapeFunc(GLUTreshapeCB reshapeFunc,
 755   int callingConvention);
 756 extern void GLUTCALLBACK __glutDefaultReshape(int, int);
 757 extern GLUTwindow *__glutCreateWindow(
 758   GLUTwindow * parent,
 759   int x, int y, int width, int height, int gamemode);
 760 extern void __glutDestroyWindow(
 761   GLUTwindow * window,
 762   GLUTwindow * initialWindow);
 763
 764 #if !defined(_WIN32)
 765 /* private routines from glut_glxext.c */
 766 extern int __glutIsSupportedByGLX(char *);
 767 extern int __glut_glXBindChannelToWindowSGIX(Display *dpy, int screen,
 768                                              int channel, Window window);
 769 extern int __glut_glXChannelRectSGIX(Display *dpy, int screen, int channel,
 770                                      int x, int y, int w, int h);
 771 extern int __glut_glXQueryChannelRectSGIX(Display *dpy, int screen,
 772                                           int channel, int *x, int *y,
 773                                           int *w, int *h);
 774 extern int __glut_glXQueryChannelDeltasSGIX(Display *dpy, int screen,
 775                                             int channel, int *dx, int *dy,
 776                                             int *dw, int *dh);
 777 extern int __glut_glXChannelRectSyncSGIX(Display *dpy, int screen, int channel,
 778                                          GLenum synctype);
 779 extern GLXContext __glut_glXCreateContextWithConfigSGIX(Display *dpy,
 780                                                         GLXFBConfigSGIX config,
 781                                                         int render_type,
 782                                                         GLXContext share_list,
 783                                                         Bool direct);
 784 extern int __glut_glXGetFBConfigAttribSGIX(Display *dpy,
 785                                            GLXFBConfigSGIX config,
 786                                            int attribute,
 787                                            int *value);
 788 extern GLXFBConfigSGIX __glut_glXGetFBConfigFromVisualSGIX(Display *dpy,
 789                                                            XVisualInfo *vis);
 790 #endif
 791
 792 /* private routines from glut_input.c */
 793 extern void  __glutUpdateInputDeviceMask(GLUTwindow * window);
 794
 795 /* private routines from glut_mesa.c */
 796 extern void __glutDetermineMesaSwapHackSupport(void);
 797
 798 /* private routines from glut_gameglut.c */
 799 extern void GLUTAPIENTRYV __glutCloseDownGameMode(void);
 800
 801 /* private variables from glut_swap.c (BrianP) */
 802 extern GLint __glutFPS;
 803 extern GLint __glutSwapCount;
 804 extern GLint __glutSwapTime;
 805
 806 #if defined(_WIN32)
 807 /* private routines from win32_*.c */
 808 extern LONG WINAPI __glutWindowProc(HWND win, UINT msg, WPARAM w, LPARAM l);
 809 extern HDC XHDC;
 810 #endif
 811
 812 #endif /* __glutint_h__ */