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      1 /*
      2  * Mesa 3-D graphics library
      3  * Version:  6.5
      4  *
      5  * Copyright (C) 1999-2006  Brian Paul   All Rights Reserved.
      6  *
      7  * Permission is hereby granted, free of charge, to any person obtaining a
      8  * copy of this software and associated documentation files (the "Software"),
      9  * to deal in the Software without restriction, including without limitation
     10  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
     11  * and/or sell copies of the Software, and to permit persons to whom the
     12  * Software is furnished to do so, subject to the following conditions:
     13  *
     14  * The above copyright notice and this permission notice shall be included
     15  * in all copies or substantial portions of the Software.
     16  *
     17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
     18  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
     20  * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
     21  * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
     22  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
     23  */
     24 
     25 
     26 #ifndef GLX_H
     27 #define GLX_H
     28 
     29 
     30 #ifdef __VMS
     31 #include <GL/vms_x_fix.h>
     32 # ifdef __cplusplus
     33 /* VMS Xlib.h gives problems with C++.
     34  * this avoids a bunch of trivial warnings */
     35 #pragma message disable nosimpint
     36 #endif
     37 #endif
     38 #include <X11/Xlib.h>
     39 #include <X11/Xutil.h>
     40 #ifdef __VMS
     41 # ifdef __cplusplus
     42 #pragma message enable nosimpint
     43 #endif
     44 #endif
     45 #include <GL/gl.h>
     46 
     47 
     48 #if defined(USE_MGL_NAMESPACE)
     49 #include "glx_mangle.h"
     50 #endif
     51 
     52 
     53 #ifdef __cplusplus
     54 extern "C" {
     55 #endif
     56 
     57 
     58 #define GLX_VERSION_1_1		1
     59 #define GLX_VERSION_1_2		1
     60 #define GLX_VERSION_1_3		1
     61 #define GLX_VERSION_1_4		1
     62 
     63 #define GLX_EXTENSION_NAME   "GLX"
     64 
     65 
     66 
     67 /*
     68  * Tokens for glXChooseVisual and glXGetConfig:
     69  */
     70 #define GLX_USE_GL		1
     71 #define GLX_BUFFER_SIZE		2
     72 #define GLX_LEVEL		3
     73 #define GLX_RGBA		4
     74 #define GLX_DOUBLEBUFFER	5
     75 #define GLX_STEREO		6
     76 #define GLX_AUX_BUFFERS		7
     77 #define GLX_RED_SIZE		8
     78 #define GLX_GREEN_SIZE		9
     79 #define GLX_BLUE_SIZE		10
     80 #define GLX_ALPHA_SIZE		11
     81 #define GLX_DEPTH_SIZE		12
     82 #define GLX_STENCIL_SIZE	13
     83 #define GLX_ACCUM_RED_SIZE	14
     84 #define GLX_ACCUM_GREEN_SIZE	15
     85 #define GLX_ACCUM_BLUE_SIZE	16
     86 #define GLX_ACCUM_ALPHA_SIZE	17
     87 
     88 
     89 /*
     90  * Error codes returned by glXGetConfig:
     91  */
     92 #define GLX_BAD_SCREEN		1
     93 #define GLX_BAD_ATTRIBUTE	2
     94 #define GLX_NO_EXTENSION	3
     95 #define GLX_BAD_VISUAL		4
     96 #define GLX_BAD_CONTEXT		5
     97 #define GLX_BAD_VALUE       	6
     98 #define GLX_BAD_ENUM		7
     99 
    100 
    101 /*
    102  * GLX 1.1 and later:
    103  */
    104 #define GLX_VENDOR		1
    105 #define GLX_VERSION		2
    106 #define GLX_EXTENSIONS 		3
    107 
    108 
    109 /*
    110  * GLX 1.3 and later:
    111  */
    112 #define GLX_CONFIG_CAVEAT		0x20
    113 #define GLX_DONT_CARE			0xFFFFFFFF
    114 #define GLX_X_VISUAL_TYPE		0x22
    115 #define GLX_TRANSPARENT_TYPE		0x23
    116 #define GLX_TRANSPARENT_INDEX_VALUE	0x24
    117 #define GLX_TRANSPARENT_RED_VALUE	0x25
    118 #define GLX_TRANSPARENT_GREEN_VALUE	0x26
    119 #define GLX_TRANSPARENT_BLUE_VALUE	0x27
    120 #define GLX_TRANSPARENT_ALPHA_VALUE	0x28
    121 #define GLX_WINDOW_BIT			0x00000001
    122 #define GLX_PIXMAP_BIT			0x00000002
    123 #define GLX_PBUFFER_BIT			0x00000004
    124 #define GLX_AUX_BUFFERS_BIT		0x00000010
    125 #define GLX_FRONT_LEFT_BUFFER_BIT	0x00000001
    126 #define GLX_FRONT_RIGHT_BUFFER_BIT	0x00000002
    127 #define GLX_BACK_LEFT_BUFFER_BIT	0x00000004
    128 #define GLX_BACK_RIGHT_BUFFER_BIT	0x00000008
    129 #define GLX_DEPTH_BUFFER_BIT		0x00000020
    130 #define GLX_STENCIL_BUFFER_BIT		0x00000040
    131 #define GLX_ACCUM_BUFFER_BIT		0x00000080
    132 #define GLX_NONE			0x8000
    133 #define GLX_SLOW_CONFIG			0x8001
    134 #define GLX_TRUE_COLOR			0x8002
    135 #define GLX_DIRECT_COLOR		0x8003
    136 #define GLX_PSEUDO_COLOR		0x8004
    137 #define GLX_STATIC_COLOR		0x8005
    138 #define GLX_GRAY_SCALE			0x8006
    139 #define GLX_STATIC_GRAY			0x8007
    140 #define GLX_TRANSPARENT_RGB		0x8008
    141 #define GLX_TRANSPARENT_INDEX		0x8009
    142 #define GLX_VISUAL_ID			0x800B
    143 #define GLX_SCREEN			0x800C
    144 #define GLX_NON_CONFORMANT_CONFIG	0x800D
    145 #define GLX_DRAWABLE_TYPE		0x8010
    146 #define GLX_RENDER_TYPE			0x8011
    147 #define GLX_X_RENDERABLE		0x8012
    148 #define GLX_FBCONFIG_ID			0x8013
    149 #define GLX_RGBA_TYPE			0x8014
    150 #define GLX_COLOR_INDEX_TYPE		0x8015
    151 #define GLX_MAX_PBUFFER_WIDTH		0x8016
    152 #define GLX_MAX_PBUFFER_HEIGHT		0x8017
    153 #define GLX_MAX_PBUFFER_PIXELS		0x8018
    154 #define GLX_PRESERVED_CONTENTS		0x801B
    155 #define GLX_LARGEST_PBUFFER		0x801C
    156 #define GLX_WIDTH			0x801D
    157 #define GLX_HEIGHT			0x801E
    158 #define GLX_EVENT_MASK			0x801F
    159 #define GLX_DAMAGED			0x8020
    160 #define GLX_SAVED			0x8021
    161 #define GLX_WINDOW			0x8022
    162 #define GLX_PBUFFER			0x8023
    163 #define GLX_PBUFFER_HEIGHT              0x8040
    164 #define GLX_PBUFFER_WIDTH               0x8041
    165 #define GLX_RGBA_BIT			0x00000001
    166 #define GLX_COLOR_INDEX_BIT		0x00000002
    167 #define GLX_PBUFFER_CLOBBER_MASK	0x08000000
    168 
    169 
    170 /*
    171  * GLX 1.4 and later:
    172  */
    173 #define GLX_SAMPLE_BUFFERS              0x186a0 /*100000*/
    174 #define GLX_SAMPLES                     0x186a1 /*100001*/
    175 
    176 
    177 
    178 typedef struct __GLXcontextRec *GLXContext;
    179 typedef XID GLXPixmap;
    180 typedef XID GLXDrawable;
    181 /* GLX 1.3 and later */
    182 typedef struct __GLXFBConfigRec *GLXFBConfig;
    183 typedef XID GLXFBConfigID;
    184 typedef XID GLXContextID;
    185 typedef XID GLXWindow;
    186 typedef XID GLXPbuffer;
    187 
    188 
    189 /*
    190 ** Events.
    191 ** __GLX_NUMBER_EVENTS is set to 17 to account for the BufferClobberSGIX
    192 **  event - this helps initialization if the server supports the pbuffer
    193 **  extension and the client doesn't.
    194 */
    195 #define GLX_PbufferClobber	0
    196 #define GLX_BufferSwapComplete	1
    197 
    198 #define __GLX_NUMBER_EVENTS 17
    199 
    200 extern XVisualInfo* glXChooseVisual( Display *dpy, int screen,
    201 				     int *attribList );
    202 
    203 extern GLXContext glXCreateContext( Display *dpy, XVisualInfo *vis,
    204 				    GLXContext shareList, Bool direct );
    205 
    206 extern void glXDestroyContext( Display *dpy, GLXContext ctx );
    207 
    208 extern Bool glXMakeCurrent( Display *dpy, GLXDrawable drawable,
    209 			    GLXContext ctx);
    210 
    211 extern void glXCopyContext( Display *dpy, GLXContext src, GLXContext dst,
    212 			    unsigned long mask );
    213 
    214 extern void glXSwapBuffers( Display *dpy, GLXDrawable drawable );
    215 
    216 extern GLXPixmap glXCreateGLXPixmap( Display *dpy, XVisualInfo *visual,
    217 				     Pixmap pixmap );
    218 
    219 extern void glXDestroyGLXPixmap( Display *dpy, GLXPixmap pixmap );
    220 
    221 extern Bool glXQueryExtension( Display *dpy, int *errorb, int *event );
    222 
    223 extern Bool glXQueryVersion( Display *dpy, int *maj, int *min );
    224 
    225 extern Bool glXIsDirect( Display *dpy, GLXContext ctx );
    226 
    227 extern int glXGetConfig( Display *dpy, XVisualInfo *visual,
    228 			 int attrib, int *value );
    229 
    230 extern GLXContext glXGetCurrentContext( void );
    231 
    232 extern GLXDrawable glXGetCurrentDrawable( void );
    233 
    234 extern void glXWaitGL( void );
    235 
    236 extern void glXWaitX( void );
    237 
    238 extern void glXUseXFont( Font font, int first, int count, int list );
    239 
    240 
    241 
    242 /* GLX 1.1 and later */
    243 extern const char *glXQueryExtensionsString( Display *dpy, int screen );
    244 
    245 extern const char *glXQueryServerString( Display *dpy, int screen, int name );
    246 
    247 extern const char *glXGetClientString( Display *dpy, int name );
    248 
    249 
    250 /* GLX 1.2 and later */
    251 extern Display *glXGetCurrentDisplay( void );
    252 
    253 
    254 /* GLX 1.3 and later */
    255 extern GLXFBConfig *glXChooseFBConfig( Display *dpy, int screen,
    256                                        const int *attribList, int *nitems );
    257 
    258 extern int glXGetFBConfigAttrib( Display *dpy, GLXFBConfig config,
    259                                  int attribute, int *value );
    260 
    261 extern GLXFBConfig *glXGetFBConfigs( Display *dpy, int screen,
    262                                      int *nelements );
    263 
    264 extern XVisualInfo *glXGetVisualFromFBConfig( Display *dpy,
    265                                               GLXFBConfig config );
    266 
    267 extern GLXWindow glXCreateWindow( Display *dpy, GLXFBConfig config,
    268                                   Window win, const int *attribList );
    269 
    270 extern void glXDestroyWindow( Display *dpy, GLXWindow window );
    271 
    272 extern GLXPixmap glXCreatePixmap( Display *dpy, GLXFBConfig config,
    273                                   Pixmap pixmap, const int *attribList );
    274 
    275 extern void glXDestroyPixmap( Display *dpy, GLXPixmap pixmap );
    276 
    277 extern GLXPbuffer glXCreatePbuffer( Display *dpy, GLXFBConfig config,
    278                                     const int *attribList );
    279 
    280 extern void glXDestroyPbuffer( Display *dpy, GLXPbuffer pbuf );
    281 
    282 extern void glXQueryDrawable( Display *dpy, GLXDrawable draw, int attribute,
    283                               unsigned int *value );
    284 
    285 extern GLXContext glXCreateNewContext( Display *dpy, GLXFBConfig config,
    286                                        int renderType, GLXContext shareList,
    287                                        Bool direct );
    288 
    289 extern Bool glXMakeContextCurrent( Display *dpy, GLXDrawable draw,
    290                                    GLXDrawable read, GLXContext ctx );
    291 
    292 extern GLXDrawable glXGetCurrentReadDrawable( void );
    293 
    294 extern int glXQueryContext( Display *dpy, GLXContext ctx, int attribute,
    295                             int *value );
    296 
    297 extern void glXSelectEvent( Display *dpy, GLXDrawable drawable,
    298                             unsigned long mask );
    299 
    300 extern void glXGetSelectedEvent( Display *dpy, GLXDrawable drawable,
    301                                  unsigned long *mask );
    302 
    303 /* GLX 1.3 function pointer typedefs */
    304 typedef GLXFBConfig * (* PFNGLXGETFBCONFIGSPROC) (Display *dpy, int screen, int *nelements);
    305 typedef GLXFBConfig * (* PFNGLXCHOOSEFBCONFIGPROC) (Display *dpy, int screen, const int *attrib_list, int *nelements);
    306 typedef int (* PFNGLXGETFBCONFIGATTRIBPROC) (Display *dpy, GLXFBConfig config, int attribute, int *value);
    307 typedef XVisualInfo * (* PFNGLXGETVISUALFROMFBCONFIGPROC) (Display *dpy, GLXFBConfig config);
    308 typedef GLXWindow (* PFNGLXCREATEWINDOWPROC) (Display *dpy, GLXFBConfig config, Window win, const int *attrib_list);
    309 typedef void (* PFNGLXDESTROYWINDOWPROC) (Display *dpy, GLXWindow win);
    310 typedef GLXPixmap (* PFNGLXCREATEPIXMAPPROC) (Display *dpy, GLXFBConfig config, Pixmap pixmap, const int *attrib_list);
    311 typedef void (* PFNGLXDESTROYPIXMAPPROC) (Display *dpy, GLXPixmap pixmap);
    312 typedef GLXPbuffer (* PFNGLXCREATEPBUFFERPROC) (Display *dpy, GLXFBConfig config, const int *attrib_list);
    313 typedef void (* PFNGLXDESTROYPBUFFERPROC) (Display *dpy, GLXPbuffer pbuf);
    314 typedef void (* PFNGLXQUERYDRAWABLEPROC) (Display *dpy, GLXDrawable draw, int attribute, unsigned int *value);
    315 typedef GLXContext (* PFNGLXCREATENEWCONTEXTPROC) (Display *dpy, GLXFBConfig config, int render_type, GLXContext share_list, Bool direct);
    316 typedef Bool (* PFNGLXMAKECONTEXTCURRENTPROC) (Display *dpy, GLXDrawable draw, GLXDrawable read, GLXContext ctx);
    317 typedef GLXDrawable (* PFNGLXGETCURRENTREADDRAWABLEPROC) (void);
    318 typedef Display * (* PFNGLXGETCURRENTDISPLAYPROC) (void);
    319 typedef int (* PFNGLXQUERYCONTEXTPROC) (Display *dpy, GLXContext ctx, int attribute, int *value);
    320 typedef void (* PFNGLXSELECTEVENTPROC) (Display *dpy, GLXDrawable draw, unsigned long event_mask);
    321 typedef void (* PFNGLXGETSELECTEDEVENTPROC) (Display *dpy, GLXDrawable draw, unsigned long *event_mask);
    322 
    323 
    324 /*
    325  * ARB 2. GLX_ARB_get_proc_address
    326  */
    327 #ifndef GLX_ARB_get_proc_address
    328 #define GLX_ARB_get_proc_address 1
    329 
    330 typedef void (*__GLXextFuncPtr)(void);
    331 extern __GLXextFuncPtr glXGetProcAddressARB (const GLubyte *);
    332 
    333 #endif /* GLX_ARB_get_proc_address */
    334 
    335 
    336 
    337 /* GLX 1.4 and later */
    338 extern void (*glXGetProcAddress(const GLubyte *procname))( void );
    339 
    340 /* GLX 1.4 function pointer typedefs */
    341 typedef __GLXextFuncPtr (* PFNGLXGETPROCADDRESSPROC) (const GLubyte *procName);
    342 
    343 
    344 #ifndef GLX_GLXEXT_LEGACY
    345 
    346 #include <GL/glxext.h>
    347 
    348 #endif /* GLX_GLXEXT_LEGACY */
    349 
    350 
    351 /**
    352  ** The following aren't in glxext.h yet.
    353  **/
    354 
    355 
    356 /*
    357  * ???. GLX_NV_vertex_array_range
    358  */
    359 #ifndef GLX_NV_vertex_array_range
    360 #define GLX_NV_vertex_array_range
    361 
    362 extern void *glXAllocateMemoryNV(GLsizei size, GLfloat readfreq, GLfloat writefreq, GLfloat priority);
    363 extern void glXFreeMemoryNV(GLvoid *pointer);
    364 typedef void * ( * PFNGLXALLOCATEMEMORYNVPROC) (GLsizei size, GLfloat readfreq, GLfloat writefreq, GLfloat priority);
    365 typedef void ( * PFNGLXFREEMEMORYNVPROC) (GLvoid *pointer);
    366 
    367 #endif /* GLX_NV_vertex_array_range */
    368 
    369 
    370 /*
    371  * ARB ?. GLX_ARB_render_texture
    372  * XXX This was never finalized!
    373  */
    374 #ifndef GLX_ARB_render_texture
    375 #define GLX_ARB_render_texture 1
    376 
    377 extern Bool glXBindTexImageARB(Display *dpy, GLXPbuffer pbuffer, int buffer);
    378 extern Bool glXReleaseTexImageARB(Display *dpy, GLXPbuffer pbuffer, int buffer);
    379 extern Bool glXDrawableAttribARB(Display *dpy, GLXDrawable draw, const int *attribList);
    380 
    381 #endif /* GLX_ARB_render_texture */
    382 
    383 
    384 /*
    385  * Remove this when glxext.h is updated.
    386  */
    387 #ifndef GLX_NV_float_buffer
    388 #define GLX_NV_float_buffer 1
    389 
    390 #define GLX_FLOAT_COMPONENTS_NV         0x20B0
    391 
    392 #endif /* GLX_NV_float_buffer */
    393 
    394 
    395 
    396 /*
    397  * #?. GLX_MESA_swap_frame_usage
    398  */
    399 #ifndef GLX_MESA_swap_frame_usage
    400 #define GLX_MESA_swap_frame_usage 1
    401 
    402 extern int glXGetFrameUsageMESA(Display *dpy, GLXDrawable drawable, float *usage);
    403 extern int glXBeginFrameTrackingMESA(Display *dpy, GLXDrawable drawable);
    404 extern int glXEndFrameTrackingMESA(Display *dpy, GLXDrawable drawable);
    405 extern int glXQueryFrameTrackingMESA(Display *dpy, GLXDrawable drawable, int64_t *swapCount, int64_t *missedFrames, float *lastMissedUsage);
    406 
    407 typedef int (*PFNGLXGETFRAMEUSAGEMESAPROC) (Display *dpy, GLXDrawable drawable, float *usage);
    408 typedef int (*PFNGLXBEGINFRAMETRACKINGMESAPROC)(Display *dpy, GLXDrawable drawable);
    409 typedef int (*PFNGLXENDFRAMETRACKINGMESAPROC)(Display *dpy, GLXDrawable drawable);
    410 typedef int (*PFNGLXQUERYFRAMETRACKINGMESAPROC)(Display *dpy, GLXDrawable drawable, int64_t *swapCount, int64_t *missedFrames, float *lastMissedUsage);
    411 
    412 #endif /* GLX_MESA_swap_frame_usage */
    413 
    414 
    415 
    416 /*
    417  * #?. GLX_MESA_swap_control
    418  */
    419 #ifndef GLX_MESA_swap_control
    420 #define GLX_MESA_swap_control 1
    421 
    422 extern int glXSwapIntervalMESA(unsigned int interval);
    423 extern int glXGetSwapIntervalMESA(void);
    424 
    425 typedef int (*PFNGLXSWAPINTERVALMESAPROC)(unsigned int interval);
    426 typedef int (*PFNGLXGETSWAPINTERVALMESAPROC)(void);
    427 
    428 #endif /* GLX_MESA_swap_control */
    429 
    430 
    431 
    432 /*
    433  * #?. GLX_EXT_texture_from_pixmap
    434  * XXX not finished?
    435  */
    436 #ifndef GLX_EXT_texture_from_pixmap
    437 #define GLX_EXT_texture_from_pixmap 1
    438 
    439 #define GLX_BIND_TO_TEXTURE_RGB_EXT        0x20D0
    440 #define GLX_BIND_TO_TEXTURE_RGBA_EXT       0x20D1
    441 #define GLX_BIND_TO_MIPMAP_TEXTURE_EXT     0x20D2
    442 #define GLX_BIND_TO_TEXTURE_TARGETS_EXT    0x20D3
    443 #define GLX_Y_INVERTED_EXT                 0x20D4
    444 
    445 #define GLX_TEXTURE_FORMAT_EXT             0x20D5
    446 #define GLX_TEXTURE_TARGET_EXT             0x20D6
    447 #define GLX_MIPMAP_TEXTURE_EXT             0x20D7
    448 
    449 #define GLX_TEXTURE_FORMAT_NONE_EXT        0x20D8
    450 #define GLX_TEXTURE_FORMAT_RGB_EXT         0x20D9
    451 #define GLX_TEXTURE_FORMAT_RGBA_EXT        0x20DA
    452 
    453 #define GLX_TEXTURE_1D_BIT_EXT             0x00000001
    454 #define GLX_TEXTURE_2D_BIT_EXT             0x00000002
    455 #define GLX_TEXTURE_RECTANGLE_BIT_EXT      0x00000004
    456 
    457 #define GLX_TEXTURE_1D_EXT                 0x20DB
    458 #define GLX_TEXTURE_2D_EXT                 0x20DC
    459 #define GLX_TEXTURE_RECTANGLE_EXT          0x20DD
    460 
    461 #define GLX_FRONT_LEFT_EXT                 0x20DE
    462 #define GLX_FRONT_RIGHT_EXT                0x20DF
    463 #define GLX_BACK_LEFT_EXT                  0x20E0
    464 #define GLX_BACK_RIGHT_EXT                 0x20E1
    465 #define GLX_FRONT_EXT                      GLX_FRONT_LEFT_EXT
    466 #define GLX_BACK_EXT                       GLX_BACK_LEFT_EXT
    467 #define GLX_AUX0_EXT                       0x20E2
    468 #define GLX_AUX1_EXT                       0x20E3
    469 #define GLX_AUX2_EXT                       0x20E4
    470 #define GLX_AUX3_EXT                       0x20E5
    471 #define GLX_AUX4_EXT                       0x20E6
    472 #define GLX_AUX5_EXT                       0x20E7
    473 #define GLX_AUX6_EXT                       0x20E8
    474 #define GLX_AUX7_EXT                       0x20E9
    475 #define GLX_AUX8_EXT                       0x20EA
    476 #define GLX_AUX9_EXT                       0x20EB
    477 
    478 extern void glXBindTexImageEXT(Display *dpy, GLXDrawable drawable, int buffer, const int *attrib_list);
    479 extern void glXReleaseTexImageEXT(Display *dpy, GLXDrawable drawable, int buffer);
    480 
    481 #endif /* GLX_EXT_texture_from_pixmap */
    482 
    483 
    484 
    485 
    486 /*** Should these go here, or in another header? */
    487 /*
    488 ** GLX Events
    489 */
    490 typedef struct {
    491     int event_type;		/* GLX_DAMAGED or GLX_SAVED */
    492     int draw_type;		/* GLX_WINDOW or GLX_PBUFFER */
    493     unsigned long serial;	/* # of last request processed by server */
    494     Bool send_event;		/* true if this came for SendEvent request */
    495     Display *display;		/* display the event was read from */
    496     GLXDrawable drawable;	/* XID of Drawable */
    497     unsigned int buffer_mask;	/* mask indicating which buffers are affected */
    498     unsigned int aux_buffer;	/* which aux buffer was affected */
    499     int x, y;
    500     int width, height;
    501     int count;			/* if nonzero, at least this many more */
    502 } GLXPbufferClobberEvent;
    503 
    504 typedef struct {
    505     int type;
    506     unsigned long serial;	/* # of last request processed by server */
    507     Bool send_event;		/* true if this came from a SendEvent request */
    508     Display *display;		/* Display the event was read from */
    509     GLXDrawable drawable;	/* drawable on which event was requested in event mask */
    510     int event_type;
    511     int64_t ust;
    512     int64_t msc;
    513     int64_t sbc;
    514 } GLXBufferSwapComplete;
    515 
    516 typedef union __GLXEvent {
    517     GLXPbufferClobberEvent glxpbufferclobber;
    518     GLXBufferSwapComplete glxbufferswapcomplete;
    519     long pad[24];
    520 } GLXEvent;
    521 
    522 #ifdef __cplusplus
    523 }
    524 #endif
    525 
    526 #endif
    527