2 * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
3 * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, subject to the following conditions:
12 * The above copyright notice including the dates of first publication and
13 * either this permission notice or a reference to
14 * http://oss.sgi.com/projects/FreeB/
15 * shall be included in all copies or substantial portions of the Software.
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 * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
21 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
22 * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
25 * Except as contained in this notice, the name of Silicon Graphics, Inc.
26 * shall not be used in advertising or otherwise to promote the sale, use or
27 * other dealings in this Software without prior written authorization from
28 * Silicon Graphics, Inc.
33 * Direct rendering support added by Precision Insight, Inc.
35 * \author Kevin E. Martin <kevin@precisioninsight.com>
38 #ifndef _GLX_client_h_
39 #define _GLX_client_h_
40 #include <X11/Xproto.h>
41 #include <X11/Xlibint.h>
42 #include <X11/Xfuncproto.h>
43 #include <X11/extensions/extutil.h>
44 #define GLX_GLXEXT_PROTOTYPES
46 #include <GL/glxext.h>
52 #include "GL/glxproto.h"
53 #include "glxconfig.h"
55 #include "util/macros.h"
57 #include "glxextensions.h"
59 #if defined(USE_LIBGLVND)
60 #define _GLX_PUBLIC _X_HIDDEN
62 #define _GLX_PUBLIC _X_EXPORT
70 #define GLX_MAJOR_VERSION 1 /* current version numbers */
71 #define GLX_MINOR_VERSION 4
73 #define __GLX_MAX_TEXTURE_UNITS 32
78 /************************************************************************/
80 #ifdef GLX_DIRECT_RENDERING
82 extern void DRI_glXUseXFont(struct glx_context
*ctx
,
83 Font font
, int first
, int count
, int listbase
);
87 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
90 * Display dependent methods. This structure is initialized during the
91 * \c driCreateDisplay call.
93 typedef struct __GLXDRIdisplayRec __GLXDRIdisplay
;
94 typedef struct __GLXDRIscreenRec __GLXDRIscreen
;
95 typedef struct __GLXDRIdrawableRec __GLXDRIdrawable
;
97 struct __GLXDRIdisplayRec
100 * Method to destroy the private DRI display data.
102 void (*destroyDisplay
) (__GLXDRIdisplay
* display
);
104 struct glx_screen
*(*createScreen
)(int screen
, struct glx_display
* priv
);
107 struct __GLXDRIscreenRec
{
109 void (*destroyScreen
)(struct glx_screen
*psc
);
111 struct glx_context
*(*createContext
)(struct glx_screen
*psc
,
112 struct glx_config
*config
,
113 struct glx_context
*shareList
,
116 __GLXDRIdrawable
*(*createDrawable
)(struct glx_screen
*psc
,
118 GLXDrawable glxDrawable
,
119 struct glx_config
*config
);
121 int64_t (*swapBuffers
)(__GLXDRIdrawable
*pdraw
, int64_t target_msc
,
122 int64_t divisor
, int64_t remainder
, Bool flush
);
123 void (*copySubBuffer
)(__GLXDRIdrawable
*pdraw
,
124 int x
, int y
, int width
, int height
, Bool flush
);
125 int (*getDrawableMSC
)(struct glx_screen
*psc
, __GLXDRIdrawable
*pdraw
,
126 int64_t *ust
, int64_t *msc
, int64_t *sbc
);
127 int (*waitForMSC
)(__GLXDRIdrawable
*pdraw
, int64_t target_msc
,
128 int64_t divisor
, int64_t remainder
, int64_t *ust
,
129 int64_t *msc
, int64_t *sbc
);
130 int (*waitForSBC
)(__GLXDRIdrawable
*pdraw
, int64_t target_sbc
, int64_t *ust
,
131 int64_t *msc
, int64_t *sbc
);
132 int (*setSwapInterval
)(__GLXDRIdrawable
*pdraw
, int interval
);
133 int (*getSwapInterval
)(__GLXDRIdrawable
*pdraw
);
134 int (*getBufferAge
)(__GLXDRIdrawable
*pdraw
);
137 struct __GLXDRIdrawableRec
139 void (*destroyDrawable
) (__GLXDRIdrawable
* drawable
);
143 struct glx_screen
*psc
;
144 GLenum textureTarget
;
145 GLenum textureFormat
; /* EXT_texture_from_pixmap support */
146 unsigned long eventMask
;
151 ** Function to create and DRI display data and initialize the display
152 ** dependent methods.
154 extern __GLXDRIdisplay
*driswCreateDisplay(Display
* dpy
);
155 extern __GLXDRIdisplay
*driCreateDisplay(Display
* dpy
);
156 extern __GLXDRIdisplay
*dri2CreateDisplay(Display
* dpy
);
157 extern __GLXDRIdisplay
*dri3_create_display(Display
* dpy
);
158 extern __GLXDRIdisplay
*driwindowsCreateDisplay(Display
* dpy
);
163 extern void dri2InvalidateBuffers(Display
*dpy
, XID drawable
);
164 extern unsigned dri2GetSwapEventType(Display
*dpy
, XID drawable
);
167 ** Functions to obtain driver configuration information from a direct
168 ** rendering client application
170 extern const char *glXGetScreenDriver(Display
* dpy
, int scrNum
);
172 extern const char *glXGetDriverConfig(const char *driverName
);
176 /************************************************************************/
178 #define __GL_CLIENT_ATTRIB_STACK_DEPTH 16
180 typedef struct __GLXpixelStoreModeRec
182 GLboolean swapEndian
;
191 } __GLXpixelStoreMode
;
194 typedef struct __GLXattributeRec
199 * Pixel storage state. Most of the pixel store mode state is kept
200 * here and used by the client code to manage the packing and
201 * unpacking of data sent to/received from the server.
203 __GLXpixelStoreMode storePack
, storeUnpack
;
206 * Is EXT_vertex_array / GL 1.1 DrawArrays protocol specifically
209 GLboolean NoDrawArraysProtocol
;
212 * Vertex Array storage state. The vertex array component
213 * state is stored here and is used to manage the packing of
214 * DrawArrays data sent to the server.
216 struct array_state_vector
*array_state
;
219 typedef struct __GLXattributeMachineRec
221 __GLXattribute
*stack
[__GL_CLIENT_ATTRIB_STACK_DEPTH
];
222 __GLXattribute
**stackPointer
;
223 } __GLXattributeMachine
;
225 struct mesa_glinterop_device_info
;
226 struct mesa_glinterop_export_in
;
227 struct mesa_glinterop_export_out
;
229 struct glx_context_vtable
{
230 void (*destroy
)(struct glx_context
*ctx
);
231 int (*bind
)(struct glx_context
*context
, struct glx_context
*old
,
232 GLXDrawable draw
, GLXDrawable read
);
233 void (*unbind
)(struct glx_context
*context
, struct glx_context
*new_ctx
);
234 void (*wait_gl
)(struct glx_context
*ctx
);
235 void (*wait_x
)(struct glx_context
*ctx
);
236 void (*use_x_font
)(struct glx_context
*ctx
,
237 Font font
, int first
, int count
, int listBase
);
238 void (*bind_tex_image
)(Display
* dpy
,
239 GLXDrawable drawable
,
240 int buffer
, const int *attrib_list
);
241 void (*release_tex_image
)(Display
* dpy
, GLXDrawable drawable
, int buffer
);
242 void * (*get_proc_address
)(const char *symbol
);
243 int (*interop_query_device_info
)(struct glx_context
*ctx
,
244 struct mesa_glinterop_device_info
*out
);
245 int (*interop_export_object
)(struct glx_context
*ctx
,
246 struct mesa_glinterop_export_in
*in
,
247 struct mesa_glinterop_export_out
*out
);
251 * GLX state that needs to be kept on the client. One of these records
252 * exist for each context that has been made current by this client.
257 * \name Drawing command buffer.
259 * Drawing commands are packed into this buffer before being sent as a
260 * single GLX protocol request. The buffer is sent when it overflows or
261 * is flushed by \c __glXFlushRenderBuffer. \c pc is the next location
262 * in the buffer to be filled. \c limit is described above in the buffer
265 * Commands that require large amounts of data to be transfered will
266 * also use this buffer to hold a header that describes the large
269 * These must be the first 6 fields since they are static initialized
270 * in the dummy context in glxext.c
280 const struct glx_context_vtable
*vtable
;
283 * The XID of this rendering context. When the context is created a
284 * new XID is allocated. This is set to None when the context is
285 * destroyed but is still current to some thread. In this case the
286 * context will be freed on next MakeCurrent.
291 * The XID of the \c shareList context.
299 struct glx_screen
*psc
;
302 * \c GL_TRUE if the context was created with ImportContext, which
303 * means the server-side context was created by another X client.
308 * The context tag returned by MakeCurrent when this context is made
309 * current. This tag is used to identify the context that a thread has
310 * current so that proper server context management can be done. It is
311 * used for all context specific commands (i.e., \c Render, \c RenderLarge,
312 * \c WaitX, \c WaitGL, \c UseXFont, and \c MakeCurrent (for the old
315 GLXContextTag currentContextTag
;
318 * \name Rendering mode
320 * The rendering mode is kept on the client as well as the server.
321 * When \c glRenderMode is called, the buffer associated with the
322 * previous rendering mode (feedback or select) is filled.
326 GLfloat
*feedbackBuf
;
331 * Client side attribs.
333 __GLXattributeMachine attributes
;
336 * Client side error code. This is set when client side gl API
337 * routines need to set an error because of a bad enumerant or
338 * running out of memory, etc.
343 * Whether this context does direct rendering.
347 #if defined(GLX_DIRECT_RENDERING) && defined(GLX_USE_APPLEGL)
352 * \c dpy of current display for this context. Will be \c NULL if not
353 * current to any display, or if this is the "dummy context".
358 * The current drawable for this context. Will be None if this
359 * context is not current to any drawable. currentReadable is below.
361 GLXDrawable currentDrawable
;
364 * \name GL Constant Strings
366 * Constant strings that describe the server implementation
367 * These pertain to GL attributes, not to be confused with
368 * GLX versioning attributes.
378 * Maximum small render command size. This is the smaller of 64k and
379 * the size of the above buffer.
381 GLint maxSmallRenderCommandSize
;
384 * Major opcode for the extension. Copied here so a lookup isn't
390 * Pointer to the config used to create this context.
392 struct glx_config
*config
;
395 * The current read-drawable for this context. Will be None if this
396 * context is not current to any drawable.
398 * \since Internal API version 20030606.
400 GLXDrawable currentReadable
;
403 * Pointer to client-state data that is private to libGL. This is only
404 * used for indirect rendering contexts.
406 * No internal API version change was made for this change. Client-side
407 * drivers should NEVER use this data or even care that it exists.
409 void *client_state_private
;
412 * Stored value for \c glXQueryContext attribute \c GLX_RENDER_TYPE.
417 * \name Raw server GL version
419 * True core GL version supported by the server. This is the raw value
420 * returned by the server, and it may not reflect what is actually
421 * supported (or reported) by the client-side library.
424 int server_major
; /**< Major version number. */
425 int server_minor
; /**< Minor version number. */
429 * Number of threads we're currently current in.
431 unsigned long thread_refcount
;
434 * GLX_ARB_create_context_no_error setting for this context.
435 * This needs to be kept here to enforce shared context rules.
439 char gl_extension_bits
[__GL_EXT_BYTES
];
443 glx_context_init(struct glx_context
*gc
,
444 struct glx_screen
*psc
, struct glx_config
*fbconfig
);
446 #define __glXSetError(gc,code) \
447 if (!(gc)->error) { \
448 (gc)->error = code; \
451 extern void __glFreeAttributeState(struct glx_context
*);
453 /************************************************************************/
456 * The size of the largest drawing command known to the implementation
457 * that will use the GLXRender GLX command. In this case it is
458 * \c glPolygonStipple.
460 #define __GLX_MAX_SMALL_RENDER_CMD_SIZE 156
463 * To keep the implementation fast, the code uses a "limit" pointer
464 * to determine when the drawing command buffer is too full to hold
465 * another fixed size command. This constant defines the amount of
466 * space that must always be available in the drawing command buffer
467 * at all times for the implementation to work. It is important that
468 * the number be just large enough, but not so large as to reduce the
469 * efficacy of the buffer. The "+32" is just to keep the code working
470 * in case somebody counts wrong.
472 #define __GLX_BUFFER_LIMIT_SIZE (__GLX_MAX_SMALL_RENDER_CMD_SIZE + 32)
475 * This implementation uses a smaller threshold for switching
476 * to the RenderLarge protocol than the protcol requires so that
477 * large copies don't occur.
479 #define __GLX_RENDER_CMD_SIZE_LIMIT 4096
482 * One of these records exists per screen of the display. It contains
483 * a pointer to the config data for that screen (if the screen supports GL).
485 struct glx_screen_vtable
{
486 struct glx_context
*(*create_context
)(struct glx_screen
*psc
,
487 struct glx_config
*config
,
488 struct glx_context
*shareList
,
491 struct glx_context
*(*create_context_attribs
)(struct glx_screen
*psc
,
492 struct glx_config
*config
,
493 struct glx_context
*shareList
,
495 const uint32_t *attribs
,
497 int (*query_renderer_integer
)(struct glx_screen
*psc
,
499 unsigned int *value
);
500 int (*query_renderer_string
)(struct glx_screen
*psc
,
507 const struct glx_screen_vtable
*vtable
;
510 * GLX extension string reported by the X-server.
512 const char *serverGLXexts
;
515 * GLX extension string to be reported to applications. This is the
516 * set of extensions that the application can actually use.
518 char *effectiveGLXexts
;
520 struct glx_display
*display
;
525 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
527 * Per screen direct rendering interface functions and data.
529 __GLXDRIscreen
*driScreen
;
533 * Linked list of glx visuals and fbconfigs for this screen.
535 struct glx_config
*visuals
, *configs
;
538 * Per-screen dynamic GLX extension tracking. The \c direct_support
539 * field only contains enough bits for 64 extensions. Should libGL
540 * ever need to track more than 64 GLX extensions, we can safely grow
541 * this field. The \c struct glx_screen structure is not used outside
545 unsigned char direct_support
[8];
546 GLboolean ext_list_first_time
;
552 * Per display private data. One of these records exists for each display
553 * that is using the OpenGL (GLX) extension.
557 /* The extension protocol codes */
559 struct glx_display
*next
;
562 * Back pointer to the display
567 * The \c majorOpcode is common to all connections to the same server.
568 * It is also copied into the context structure.
573 * \name Server Version
575 * Major and minor version returned by the server during initialization.
578 int majorVersion
, minorVersion
;
582 * \name Storage for the servers GLX vendor and versions strings.
584 * These are the same for all screens on this display. These fields will
585 * be filled in on demand.
588 const char *serverGLXvendor
;
589 const char *serverGLXversion
;
593 * Configurations of visuals for all screens on this display.
594 * Also, per screen data which now includes the server \c GLX_EXTENSION
597 struct glx_screen
**screens
;
599 __glxHashTable
*glXDrawHash
;
601 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
602 __glxHashTable
*drawHash
;
605 * Per display direct rendering interface functions and data.
607 __GLXDRIdisplay
*driswDisplay
;
608 __GLXDRIdisplay
*driDisplay
;
609 __GLXDRIdisplay
*dri2Display
;
610 __GLXDRIdisplay
*dri3Display
;
612 #ifdef GLX_USE_WINDOWSGL
613 __GLXDRIdisplay
*windowsdriDisplay
;
617 struct glx_drawable
{
621 uint32_t lastEventSbc
;
622 int64_t eventSbcWrap
;
626 glx_screen_init(struct glx_screen
*psc
,
627 int screen
, struct glx_display
* priv
);
629 glx_screen_cleanup(struct glx_screen
*psc
);
631 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
632 extern __GLXDRIdrawable
*
633 dri2GetGlxDrawableFromXDrawableId(Display
*dpy
, XID id
);
636 extern GLubyte
*__glXFlushRenderBuffer(struct glx_context
*, GLubyte
*);
638 extern void __glXSendLargeChunk(struct glx_context
* gc
, GLint requestNumber
,
640 const GLvoid
* data
, GLint dataLen
);
642 extern void __glXSendLargeCommand(struct glx_context
*, const GLvoid
*, GLint
,
643 const GLvoid
*, GLint
);
645 /* Initialize the GLX extension for dpy */
646 extern struct glx_display
*__glXInitialize(Display
*);
648 /************************************************************************/
650 extern int __glXDebug
;
652 /* This is per-thread storage in an MT environment */
654 extern void __glXSetCurrentContext(struct glx_context
* c
);
656 # if defined( USE_ELF_TLS )
658 extern __thread
void *__glX_tls_Context
659 __attribute__ ((tls_model("initial-exec")));
661 # define __glXGetCurrentContext() __glX_tls_Context
665 extern struct glx_context
*__glXGetCurrentContext(void);
667 # endif /* defined( USE_ELF_TLS ) */
669 extern void __glXSetCurrentContextNull(void);
673 ** Global lock for all threads in this address space using the GLX
676 extern pthread_mutex_t __glXmutex
;
677 #define __glXLock() pthread_mutex_lock(&__glXmutex)
678 #define __glXUnlock() pthread_mutex_unlock(&__glXmutex)
681 ** Setup for a command. Initialize the extension for dpy if necessary.
683 extern CARD8
__glXSetupForCommand(Display
* dpy
);
685 /************************************************************************/
688 ** Data conversion and packing support.
691 extern const GLuint __glXDefaultPixelStore
[9];
693 /* Send an image to the server using RenderLarge. */
694 extern void __glXSendLargeImage(struct glx_context
* gc
, GLint compsize
, GLint dim
,
695 GLint width
, GLint height
, GLint depth
,
696 GLenum format
, GLenum type
,
697 const GLvoid
* src
, GLubyte
* pc
,
700 /* Return the size, in bytes, of some pixel data */
701 extern GLint
__glImageSize(GLint
, GLint
, GLint
, GLenum
, GLenum
, GLenum
);
703 /* Return the number of elements per group of a specified format*/
704 extern GLint
__glElementsPerGroup(GLenum format
, GLenum type
);
706 /* Return the number of bytes per element, based on the element type (other
709 extern GLint
__glBytesPerElement(GLenum type
);
712 ** Fill the transport buffer with the data from the users buffer,
713 ** applying some of the pixel store modes (unpack modes) to the data
714 ** first. As a side effect of this call, the "modes" field is
715 ** updated to contain the modes needed by the server to decode the
718 extern void __glFillImage(struct glx_context
*, GLint
, GLint
, GLint
, GLint
, GLenum
,
719 GLenum
, const GLvoid
*, GLubyte
*, GLubyte
*);
721 /* Copy map data with a stride into a packed buffer */
722 extern void __glFillMap1f(GLint
, GLint
, GLint
, const GLfloat
*, GLubyte
*);
723 extern void __glFillMap1d(GLint
, GLint
, GLint
, const GLdouble
*, GLubyte
*);
724 extern void __glFillMap2f(GLint
, GLint
, GLint
, GLint
, GLint
,
725 const GLfloat
*, GLfloat
*);
726 extern void __glFillMap2d(GLint
, GLint
, GLint
, GLint
, GLint
,
727 const GLdouble
*, GLdouble
*);
730 ** Empty an image out of the reply buffer into the clients memory applying
731 ** the pack modes to pack back into the clients requested format.
733 extern void __glEmptyImage(struct glx_context
*, GLint
, GLint
, GLint
, GLint
, GLenum
,
734 GLenum
, const GLubyte
*, GLvoid
*);
738 ** Allocate and Initialize Vertex Array client state, and free.
740 extern void __glXInitVertexArrayState(struct glx_context
*);
741 extern void __glXFreeVertexArrayState(struct glx_context
*);
744 ** Inform the Server of the major and minor numbers and of the client
745 ** libraries extension string.
747 extern void __glXClientInfo(Display
* dpy
, int opcode
);
750 __glX_send_client_info(struct glx_display
*glx_dpy
);
752 /************************************************************************/
755 ** Declarations that should be in Xlib
757 #ifdef __GL_USE_OUR_PROTOTYPES
758 extern void _XFlush(Display
*);
759 extern Status
_XReply(Display
*, xReply
*, int, Bool
);
760 extern void _XRead(Display
*, void *, long);
761 extern void _XSend(Display
*, const void *, long);
765 extern void __glXInitializeVisualConfigFromTags(struct glx_config
* config
,
766 int count
, const INT32
* bp
,
768 Bool fbconfig_style_tags
);
770 extern char *__glXQueryServerString(Display
* dpy
, int opcode
,
771 CARD32 screen
, CARD32 name
);
772 extern char *__glXGetString(Display
* dpy
, int opcode
,
773 CARD32 screen
, CARD32 name
);
775 extern const char __glXGLClientVersion
[];
776 extern const char __glXGLClientExtensions
[];
778 /* Get the unadjusted system time */
779 extern int __glXGetUST(int64_t * ust
);
781 extern GLboolean
__glXGetMscRateOML(Display
* dpy
, GLXDrawable drawable
,
783 int32_t * denominator
);
785 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
787 __glxGetMscRate(struct glx_screen
*psc
,
788 int32_t * numerator
, int32_t * denominator
);
790 /* So that dri2.c:DRI2WireToEvent() can access
791 * glx_info->codes->first_event */
792 XExtDisplayInfo
*__glXFindDisplay (Display
*dpy
);
795 GarbageCollectDRIDrawables(struct glx_screen
*psc
);
797 extern __GLXDRIdrawable
*
798 GetGLXDRIDrawable(Display
*dpy
, GLXDrawable drawable
);
801 extern struct glx_screen
*GetGLXScreenConfigs(Display
* dpy
, int scrn
);
803 #ifdef GLX_USE_APPLEGL
804 extern struct glx_screen
*
805 applegl_create_screen(int screen
, struct glx_display
* priv
);
807 extern struct glx_context
*
808 applegl_create_context(struct glx_screen
*psc
,
809 struct glx_config
*mode
,
810 struct glx_context
*shareList
, int renderType
);
813 applegl_create_display(struct glx_display
*display
);
816 extern Bool
validate_renderType_against_config(const struct glx_config
*config
,
820 extern struct glx_drawable
*GetGLXDrawable(Display
*dpy
, GLXDrawable drawable
);
821 extern int InitGLXDrawable(Display
*dpy
, struct glx_drawable
*glxDraw
,
822 XID xDrawable
, GLXDrawable drawable
);
823 extern void DestroyGLXDrawable(Display
*dpy
, GLXDrawable drawable
);
825 extern struct glx_context dummyContext
;
827 extern struct glx_screen
*
828 indirect_create_screen(int screen
, struct glx_display
* priv
);
829 extern struct glx_context
*
830 indirect_create_context(struct glx_screen
*psc
,
831 struct glx_config
*mode
,
832 struct glx_context
*shareList
, int renderType
);
833 extern struct glx_context
*
834 indirect_create_context_attribs(struct glx_screen
*base
,
835 struct glx_config
*config_base
,
836 struct glx_context
*shareList
,
837 unsigned num_attribs
,
838 const uint32_t *attribs
,
842 extern int __glXGetDrawableAttribute(Display
* dpy
, GLXDrawable drawable
,
843 int attribute
, unsigned int *value
);
849 #endif /* !__GLX_client_h__ */