Retire miniglx and move the actual glx code up to src/glx

1 files changed, 803 insertions, 0 deletions

diff --git a/src/glx/glxclient.h b/src/glx/glxclient.h
new file mode 100644
index 0000000000..e0b286b688
--- /dev/null
+++ b/src/glx/glxclient.h
@@ -0,0 +1,803 @@
+/*
+ * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
+ * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice including the dates of first publication and
+ * either this permission notice or a reference to
+ * http://oss.sgi.com/projects/FreeB/
+ * shall be included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
+ * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ * Except as contained in this notice, the name of Silicon Graphics, Inc.
+ * shall not be used in advertising or otherwise to promote the sale, use or
+ * other dealings in this Software without prior written authorization from
+ * Silicon Graphics, Inc.
+ */
+
+/**
+ * \file glxclient.h
+ * Direct rendering support added by Precision Insight, Inc.
+ *
+ * \author Kevin E. Martin <kevin@precisioninsight.com>
+ */
+
+#ifndef _GLX_client_h_
+#define _GLX_client_h_
+#define NEED_REPLIES
+#define NEED_EVENTS
+#include <X11/Xproto.h>
+#include <X11/Xlibint.h>
+#include <X11/extensions/extutil.h>
+#define GLX_GLXEXT_PROTOTYPES
+#include <GL/glx.h>
+#include <GL/glxext.h>
+#include <string.h>
+#include <stdlib.h>
+#include <stdio.h>
+#ifdef WIN32
+#include <stdint.h>
+#endif
+#include "GL/glxint.h"
+#include "GL/glxproto.h"
+#include "GL/internal/glcore.h"
+#include "glapi/glapitable.h"
+#include "glxhash.h"
+#if defined( PTHREADS )
+# include <pthread.h>
+#endif
+
+#include "glxextensions.h"
+
+
+/* If we build the library with gcc's -fvisibility=hidden flag, we'll
+ * use the PUBLIC macro to mark functions that are to be exported.
+ *
+ * We also need to define a USED attribute, so the optimizer doesn't
+ * inline a static function that we later use in an alias. - ajax
+ */
+#if defined(__GNUC__) && (__GNUC__ * 100 + __GNUC_MINOR__) >= 303
+#  define PUBLIC __attribute__((visibility("default")))
+#  define USED __attribute__((used))
+#else
+#  define PUBLIC
+#  define USED
+#endif
+
+
+
+#define GLX_MAJOR_VERSION 1       /* current version numbers */
+#define GLX_MINOR_VERSION 4
+
+#define __GLX_MAX_TEXTURE_UNITS 32
+
+typedef struct __GLXscreenConfigsRec __GLXscreenConfigs;
+typedef struct __GLXcontextRec __GLXcontext;
+typedef struct __GLXdrawableRec __GLXdrawable;
+typedef struct __GLXdisplayPrivateRec __GLXdisplayPrivate;
+typedef struct _glapi_table __GLapi;
+
+/************************************************************************/
+
+#ifdef GLX_DIRECT_RENDERING
+
+#define containerOf(ptr, type, member)              \
+    (type *)( (char *)ptr - offsetof(type,member) )
+
+#include <GL/internal/dri_interface.h>
+
+
+/**
+ * Display dependent methods.  This structure is initialized during the
+ * \c driCreateDisplay call.
+ */
+typedef struct __GLXDRIdisplayRec __GLXDRIdisplay;
+typedef struct __GLXDRIscreenRec __GLXDRIscreen;
+typedef struct __GLXDRIdrawableRec __GLXDRIdrawable;
+typedef struct __GLXDRIcontextRec __GLXDRIcontext;
+
+#include "glxextensions.h"
+
+struct __GLXDRIdisplayRec
+{
+    /**
+     * Method to destroy the private DRI display data.
+     */
+   void (*destroyDisplay) (__GLXDRIdisplay * display);
+
+   __GLXDRIscreen *(*createScreen) (__GLXscreenConfigs * psc, int screen,
+                                    __GLXdisplayPrivate * priv);
+};
+
+struct __GLXDRIscreenRec {
+
+   void (*destroyScreen)(__GLXscreenConfigs *psc);
+
+   __GLXDRIcontext *(*createContext)(__GLXscreenConfigs *psc,
+				     const __GLcontextModes *mode,
+				     GLXContext gc,
+				     GLXContext shareList, int renderType);
+
+   __GLXDRIdrawable *(*createDrawable)(__GLXscreenConfigs *psc,
+				       XID drawable,
+				       GLXDrawable glxDrawable,
+				       const __GLcontextModes *modes);
+
+   int64_t (*swapBuffers)(__GLXDRIdrawable *pdraw, int64_t target_msc,
+			  int64_t divisor, int64_t remainder);
+   void (*copySubBuffer)(__GLXDRIdrawable *pdraw,
+			 int x, int y, int width, int height);
+   void (*waitX)(__GLXDRIdrawable *pdraw);
+   void (*waitGL)(__GLXDRIdrawable *pdraw);
+   int (*getDrawableMSC)(__GLXscreenConfigs *psc, __GLXDRIdrawable *pdraw,
+			 int64_t *ust, int64_t *msc, int64_t *sbc);
+   int (*waitForMSC)(__GLXDRIdrawable *pdraw, int64_t target_msc,
+		     int64_t divisor, int64_t remainder, int64_t *ust,
+		     int64_t *msc, int64_t *sbc);
+   int (*waitForSBC)(__GLXDRIdrawable *pdraw, int64_t target_sbc, int64_t *ust,
+		     int64_t *msc, int64_t *sbc);
+   void (*setSwapInterval)(__GLXDRIdrawable *pdraw, int interval);
+   int (*getSwapInterval)(__GLXDRIdrawable *pdraw);
+};
+
+struct __GLXDRIcontextRec
+{
+   void (*destroyContext) (__GLXDRIcontext * context,
+                           __GLXscreenConfigs * psc, Display * dpy);
+     Bool(*bindContext) (__GLXDRIcontext * context, __GLXDRIdrawable * pdraw,
+                         __GLXDRIdrawable * pread);
+
+   void (*unbindContext) (__GLXDRIcontext * context);
+};
+
+struct __GLXDRIdrawableRec
+{
+   void (*destroyDrawable) (__GLXDRIdrawable * drawable);
+
+   XID xDrawable;
+   XID drawable;
+   __GLXscreenConfigs *psc;
+   GLenum textureTarget;
+   __DRIdrawable *driDrawable;
+   GLenum textureFormat;        /* EXT_texture_from_pixmap support */
+};
+
+/*
+** Function to create and DRI display data and initialize the display
+** dependent methods.
+*/
+extern __GLXDRIdisplay *driswCreateDisplay(Display * dpy);
+extern __GLXDRIdisplay *driCreateDisplay(Display * dpy);
+extern __GLXDRIdisplay *dri2CreateDisplay(Display * dpy);
+
+extern void DRI_glXUseXFont(Font font, int first, int count, int listbase);
+
+/*
+** Functions to obtain driver configuration information from a direct
+** rendering client application
+*/
+extern const char *glXGetScreenDriver(Display * dpy, int scrNum);
+
+extern const char *glXGetDriverConfig(const char *driverName);
+
+#endif
+
+/************************************************************************/
+
+#define __GL_CLIENT_ATTRIB_STACK_DEPTH 16
+
+typedef struct __GLXpixelStoreModeRec
+{
+   GLboolean swapEndian;
+   GLboolean lsbFirst;
+   GLuint rowLength;
+   GLuint imageHeight;
+   GLuint imageDepth;
+   GLuint skipRows;
+   GLuint skipPixels;
+   GLuint skipImages;
+   GLuint alignment;
+} __GLXpixelStoreMode;
+
+
+typedef struct __GLXattributeRec
+{
+   GLuint mask;
+
+    /**
+     * Pixel storage state.  Most of the pixel store mode state is kept
+     * here and used by the client code to manage the packing and
+     * unpacking of data sent to/received from the server.
+     */
+   __GLXpixelStoreMode storePack, storeUnpack;
+
+    /**
+     * Is EXT_vertex_array / GL 1.1 DrawArrays protocol specifically
+     * disabled?
+     */
+   GLboolean NoDrawArraysProtocol;
+
+    /**
+     * Vertex Array storage state.  The vertex array component
+     * state is stored here and is used to manage the packing of
+     * DrawArrays data sent to the server.
+     */
+   struct array_state_vector *array_state;
+} __GLXattribute;
+
+typedef struct __GLXattributeMachineRec
+{
+   __GLXattribute *stack[__GL_CLIENT_ATTRIB_STACK_DEPTH];
+   __GLXattribute **stackPointer;
+} __GLXattributeMachine;
+
+/**
+ * GLX state that needs to be kept on the client.  One of these records
+ * exist for each context that has been made current by this client.
+ */
+struct __GLXcontextRec
+{
+    /**
+     * \name Drawing command buffer.
+     *
+     * Drawing commands are packed into this buffer before being sent as a
+     * single GLX protocol request.  The buffer is sent when it overflows or
+     * is flushed by \c __glXFlushRenderBuffer.  \c pc is the next location
+     * in the buffer to be filled.  \c limit is described above in the buffer
+     * slop discussion.
+     *
+     * Commands that require large amounts of data to be transfered will
+     * also use this buffer to hold a header that describes the large
+     * command.
+     *
+     * These must be the first 6 fields since they are static initialized
+     * in the dummy context in glxext.c
+     */
+   /*@{ */
+   GLubyte *buf;
+   GLubyte *pc;
+   GLubyte *limit;
+   GLubyte *bufEnd;
+   GLint bufSize;
+   /*@} */
+
+    /**
+     * The XID of this rendering context.  When the context is created a
+     * new XID is allocated.  This is set to None when the context is
+     * destroyed but is still current to some thread. In this case the
+     * context will be freed on next MakeCurrent.
+     */
+   XID xid;
+
+    /**
+     * The XID of the \c shareList context.
+     */
+   XID share_xid;
+
+    /**
+     * Screen number.
+     */
+   GLint screen;
+   __GLXscreenConfigs *psc;
+
+    /**
+     * \c GL_TRUE if the context was created with ImportContext, which
+     * means the server-side context was created by another X client.
+     */
+   GLboolean imported;
+
+    /**
+     * The context tag returned by MakeCurrent when this context is made
+     * current. This tag is used to identify the context that a thread has
+     * current so that proper server context management can be done.  It is
+     * used for all context specific commands (i.e., \c Render, \c RenderLarge,
+     * \c WaitX, \c WaitGL, \c UseXFont, and \c MakeCurrent (for the old
+     * context)).
+     */
+   GLXContextTag currentContextTag;
+
+    /**
+     * \name Rendering mode
+     *
+     * The rendering mode is kept on the client as well as the server.
+     * When \c glRenderMode is called, the buffer associated with the
+     * previous rendering mode (feedback or select) is filled.
+     */
+   /*@{ */
+   GLenum renderMode;
+   GLfloat *feedbackBuf;
+   GLuint *selectBuf;
+   /*@} */
+
+    /**
+     * This is \c GL_TRUE if the pixel unpack modes are such that an image
+     * can be unpacked from the clients memory by just copying.  It may
+     * still be true that the server will have to do some work.  This
+     * just promises that a straight copy will fetch the correct bytes.
+     */
+   GLboolean fastImageUnpack;
+
+    /**
+     * Fill newImage with the unpacked form of \c oldImage getting it
+     * ready for transport to the server.
+     */
+   void (*fillImage) (__GLXcontext *, GLint, GLint, GLint, GLint, GLenum,
+                      GLenum, const GLvoid *, GLubyte *, GLubyte *);
+
+    /**
+     * Client side attribs.
+     */
+   __GLXattributeMachine attributes;
+
+    /**
+     * Client side error code.  This is set when client side gl API
+     * routines need to set an error because of a bad enumerant or
+     * running out of memory, etc.
+     */
+   GLenum error;
+
+    /**
+     * Whether this context does direct rendering.
+     */
+   Bool isDirect;
+
+    /**
+     * \c dpy of current display for this context.  Will be \c NULL if not
+     * current to any display, or if this is the "dummy context".
+     */
+   Display *currentDpy;
+
+    /**
+     * The current drawable for this context.  Will be None if this
+     * context is not current to any drawable.  currentReadable is below.
+     */
+   GLXDrawable currentDrawable;
+
+    /**
+     * \name GL Constant Strings
+     *
+     * Constant strings that describe the server implementation
+     * These pertain to GL attributes, not to be confused with
+     * GLX versioning attributes.
+     */
+   /*@{ */
+   GLubyte *vendor;
+   GLubyte *renderer;
+   GLubyte *version;
+   GLubyte *extensions;
+   /*@} */
+
+    /**
+     * Record the dpy this context was created on for later freeing
+     */
+   Display *createDpy;
+
+    /**
+     * Maximum small render command size.  This is the smaller of 64k and
+     * the size of the above buffer.
+     */
+   GLint maxSmallRenderCommandSize;
+
+    /**
+     * Major opcode for the extension.  Copied here so a lookup isn't
+     * needed.
+     */
+   GLint majorOpcode;
+
+    /**
+     * Pointer to the mode used to create this context.
+     */
+   const __GLcontextModes *mode;
+
+#ifdef GLX_DIRECT_RENDERING
+   __GLXDRIcontext *driContext;
+   __DRIcontext *__driContext;
+#endif
+
+    /**
+     * The current read-drawable for this context.  Will be None if this
+     * context is not current to any drawable.
+     *
+     * \since Internal API version 20030606.
+     */
+   GLXDrawable currentReadable;
+
+   /**
+    * Pointer to client-state data that is private to libGL.  This is only
+    * used for indirect rendering contexts.
+    *
+    * No internal API version change was made for this change.  Client-side
+    * drivers should NEVER use this data or even care that it exists.
+    */
+   void *client_state_private;
+
+   /**
+    * Stored value for \c glXQueryContext attribute \c GLX_RENDER_TYPE.
+    */
+   int renderType;
+
+   /**
+    * \name Raw server GL version
+    *
+    * True core GL version supported by the server.  This is the raw value
+    * returned by the server, and it may not reflect what is actually
+    * supported (or reported) by the client-side library.
+    */
+   /*@{ */
+   int server_major;        /**< Major version number. */
+   int server_minor;        /**< Minor version number. */
+   /*@} */
+
+   /**
+    * Thread ID we're currently current in. Zero if none.
+    */
+   unsigned long thread_id;
+
+   char gl_extension_bits[__GL_EXT_BYTES];
+};
+
+#define __glXSetError(gc,code)  \
+   if (!(gc)->error) {          \
+      (gc)->error = code;       \
+   }
+
+extern void __glFreeAttributeState(__GLXcontext *);
+
+/************************************************************************/
+
+/**
+ * The size of the largest drawing command known to the implementation
+ * that will use the GLXRender GLX command.  In this case it is
+ * \c glPolygonStipple.
+ */
+#define __GLX_MAX_SMALL_RENDER_CMD_SIZE 156
+
+/**
+ * To keep the implementation fast, the code uses a "limit" pointer
+ * to determine when the drawing command buffer is too full to hold
+ * another fixed size command.  This constant defines the amount of
+ * space that must always be available in the drawing command buffer
+ * at all times for the implementation to work.  It is important that
+ * the number be just large enough, but not so large as to reduce the
+ * efficacy of the buffer.  The "+32" is just to keep the code working
+ * in case somebody counts wrong.
+ */
+#define __GLX_BUFFER_LIMIT_SIZE (__GLX_MAX_SMALL_RENDER_CMD_SIZE + 32)
+
+/**
+ * This implementation uses a smaller threshold for switching
+ * to the RenderLarge protocol than the protcol requires so that
+ * large copies don't occur.
+ */
+#define __GLX_RENDER_CMD_SIZE_LIMIT 4096
+
+/**
+ * One of these records exists per screen of the display.  It contains
+ * a pointer to the config data for that screen (if the screen supports GL).
+ */
+struct __GLXscreenConfigsRec
+{
+    /**
+     * GLX extension string reported by the X-server.
+     */
+   const char *serverGLXexts;
+
+    /**
+     * GLX extension string to be reported to applications.  This is the
+     * set of extensions that the application can actually use.
+     */
+   char *effectiveGLXexts;
+
+#ifdef GLX_DIRECT_RENDERING
+    /**
+     * Per screen direct rendering interface functions and data.
+     */
+   __DRIscreen *__driScreen;
+   const __DRIcoreExtension *core;
+   const __DRIlegacyExtension *legacy;
+   const __DRIswrastExtension *swrast;
+   const __DRIdri2Extension *dri2;
+   __glxHashTable *drawHash;
+   Display *dpy;
+   int scr, fd;
+   void *driver;
+
+   __GLXDRIscreen *driScreen;
+
+   const __DRIconfig **driver_configs;
+
+#ifdef __DRI_COPY_SUB_BUFFER
+   const __DRIcopySubBufferExtension *driCopySubBuffer;
+#endif
+
+#ifdef __DRI_SWAP_CONTROL
+   const __DRIswapControlExtension *swapControl;
+#endif
+
+#ifdef __DRI_ALLOCATE
+   const __DRIallocateExtension *allocate;
+#endif
+
+#ifdef __DRI_FRAME_TRACKING
+   const __DRIframeTrackingExtension *frameTracking;
+#endif
+
+#ifdef __DRI_MEDIA_STREAM_COUNTER
+   const __DRImediaStreamCounterExtension *msc;
+#endif
+
+#ifdef __DRI_TEX_BUFFER
+   const __DRItexBufferExtension *texBuffer;
+#endif
+
+#ifdef __DRI2_FLUSH
+   const __DRI2flushExtension *f;
+#endif
+
+#endif
+
+    /**
+     * Linked list of glx visuals and  fbconfigs for this screen.
+     */
+   __GLcontextModes *visuals, *configs;
+
+    /**
+     * Per-screen dynamic GLX extension tracking.  The \c direct_support
+     * field only contains enough bits for 64 extensions.  Should libGL
+     * ever need to track more than 64 GLX extensions, we can safely grow
+     * this field.  The \c __GLXscreenConfigs structure is not used outside
+     * libGL.
+     */
+   /*@{ */
+   unsigned char direct_support[8];
+   GLboolean ext_list_first_time;
+   /*@} */
+
+};
+
+/**
+ * Per display private data.  One of these records exists for each display
+ * that is using the OpenGL (GLX) extension.
+ */
+struct __GLXdisplayPrivateRec
+{
+    /**
+     * Back pointer to the display
+     */
+   Display *dpy;
+
+    /**
+     * The \c majorOpcode is common to all connections to the same server.
+     * It is also copied into the context structure.
+     */
+   int majorOpcode;
+
+    /**
+     * \name Server Version
+     *
+     * Major and minor version returned by the server during initialization.
+     */
+   /*@{ */
+   int majorVersion, minorVersion;
+   /*@} */
+
+    /**
+     * \name Storage for the servers GLX vendor and versions strings.
+     *
+     * These are the same for all screens on this display. These fields will
+     * be filled in on demand.
+     */
+   /*@{ */
+   const char *serverGLXvendor;
+   const char *serverGLXversion;
+   /*@} */
+
+    /**
+     * Configurations of visuals for all screens on this display.
+     * Also, per screen data which now includes the server \c GLX_EXTENSION
+     * string.
+     */
+   __GLXscreenConfigs *screenConfigs;
+
+#ifdef GLX_DIRECT_RENDERING
+    /**
+     * Per display direct rendering interface functions and data.
+     */
+   __GLXDRIdisplay *driswDisplay;
+   __GLXDRIdisplay *driDisplay;
+   __GLXDRIdisplay *dri2Display;
+#endif
+};
+
+
+extern GLubyte *__glXFlushRenderBuffer(__GLXcontext *, GLubyte *);
+
+extern void __glXSendLargeChunk(__GLXcontext * gc, GLint requestNumber,
+                                GLint totalRequests,
+                                const GLvoid * data, GLint dataLen);
+
+extern void __glXSendLargeCommand(__GLXcontext *, const GLvoid *, GLint,
+                                  const GLvoid *, GLint);
+
+/* Initialize the GLX extension for dpy */
+extern __GLXdisplayPrivate *__glXInitialize(Display *);
+
+extern void __glXPreferEGL(int state);
+
+/************************************************************************/
+
+extern int __glXDebug;
+
+/* This is per-thread storage in an MT environment */
+#if defined( PTHREADS )
+
+extern void __glXSetCurrentContext(__GLXcontext * c);
+
+# if defined( GLX_USE_TLS )
+
+extern __thread void *__glX_tls_Context
+   __attribute__ ((tls_model("initial-exec")));
+
+#  define __glXGetCurrentContext() __glX_tls_Context
+
+# else
+
+extern __GLXcontext *__glXGetCurrentContext(void);
+
+# endif /* defined( GLX_USE_TLS ) */
+
+#else
+
+extern __GLXcontext *__glXcurrentContext;
+#define __glXGetCurrentContext() __glXcurrentContext
+#define __glXSetCurrentContext(gc) __glXcurrentContext = gc
+
+#endif /* defined( PTHREADS ) */
+
+extern void __glXSetCurrentContextNull(void);
+
+extern void __glXFreeContext(__GLXcontext *);
+
+
+/*
+** Global lock for all threads in this address space using the GLX
+** extension
+*/
+#if defined( PTHREADS )
+extern pthread_mutex_t __glXmutex;
+#define __glXLock()    pthread_mutex_lock(&__glXmutex)
+#define __glXUnlock()  pthread_mutex_unlock(&__glXmutex)
+#else
+#define __glXLock()
+#define __glXUnlock()
+#endif
+
+/*
+** Setup for a command.  Initialize the extension for dpy if necessary.
+*/
+extern CARD8 __glXSetupForCommand(Display * dpy);
+
+/************************************************************************/
+
+/*
+** Data conversion and packing support.
+*/
+
+extern const GLuint __glXDefaultPixelStore[9];
+
+/* Send an image to the server using RenderLarge. */
+extern void __glXSendLargeImage(__GLXcontext * gc, GLint compsize, GLint dim,
+                                GLint width, GLint height, GLint depth,
+                                GLenum format, GLenum type,
+                                const GLvoid * src, GLubyte * pc,
+                                GLubyte * modes);
+
+/* Return the size, in bytes, of some pixel data */
+extern GLint __glImageSize(GLint, GLint, GLint, GLenum, GLenum, GLenum);
+
+/* Return the number of elements per group of a specified format*/
+extern GLint __glElementsPerGroup(GLenum format, GLenum type);
+
+/* Return the number of bytes per element, based on the element type (other
+** than GL_BITMAP).
+*/
+extern GLint __glBytesPerElement(GLenum type);
+
+/*
+** Fill the transport buffer with the data from the users buffer,
+** applying some of the pixel store modes (unpack modes) to the data
+** first.  As a side effect of this call, the "modes" field is
+** updated to contain the modes needed by the server to decode the
+** sent data.
+*/
+extern void __glFillImage(__GLXcontext *, GLint, GLint, GLint, GLint, GLenum,
+                          GLenum, const GLvoid *, GLubyte *, GLubyte *);
+
+/* Copy map data with a stride into a packed buffer */
+extern void __glFillMap1f(GLint, GLint, GLint, const GLfloat *, GLubyte *);
+extern void __glFillMap1d(GLint, GLint, GLint, const GLdouble *, GLubyte *);
+extern void __glFillMap2f(GLint, GLint, GLint, GLint, GLint,
+                          const GLfloat *, GLfloat *);
+extern void __glFillMap2d(GLint, GLint, GLint, GLint, GLint,
+                          const GLdouble *, GLdouble *);
+
+/*
+** Empty an image out of the reply buffer into the clients memory applying
+** the pack modes to pack back into the clients requested format.
+*/
+extern void __glEmptyImage(__GLXcontext *, GLint, GLint, GLint, GLint, GLenum,
+                           GLenum, const GLubyte *, GLvoid *);
+
+
+/*
+** Allocate and Initialize Vertex Array client state, and free.
+*/
+extern void __glXInitVertexArrayState(__GLXcontext *);
+extern void __glXFreeVertexArrayState(__GLXcontext *);
+
+/*
+** Inform the Server of the major and minor numbers and of the client
+** libraries extension string.
+*/
+extern void __glXClientInfo(Display * dpy, int opcode);
+
+/************************************************************************/
+
+/*
+** Declarations that should be in Xlib
+*/
+#ifdef __GL_USE_OUR_PROTOTYPES
+extern void _XFlush(Display *);
+extern Status _XReply(Display *, xReply *, int, Bool);
+extern void _XRead(Display *, void *, long);
+extern void _XSend(Display *, const void *, long);
+#endif
+
+
+extern void __glXInitializeVisualConfigFromTags(__GLcontextModes * config,
+                                                int count, const INT32 * bp,
+                                                Bool tagged_only,
+                                                Bool fbconfig_style_tags);
+
+extern char *__glXQueryServerString(Display * dpy, int opcode,
+                                    CARD32 screen, CARD32 name);
+extern char *__glXGetString(Display * dpy, int opcode,
+                            CARD32 screen, CARD32 name);
+
+extern char *__glXstrdup(const char *str);
+
+
+extern const char __glXGLClientVersion[];
+extern const char __glXGLClientExtensions[];
+
+/* Get the unadjusted system time */
+extern int __glXGetUST(int64_t * ust);
+
+extern GLboolean __glXGetMscRateOML(Display * dpy, GLXDrawable drawable,
+                                    int32_t * numerator,
+                                    int32_t * denominator);
+
+#ifdef GLX_DIRECT_RENDERING
+GLboolean
+__driGetMscRateOML(__DRIdrawable * draw,
+                   int32_t * numerator, int32_t * denominator, void *private);
+
+/* So that dri2.c:DRI2WireToEvent() can access
+ * glx_info->codes->first_event */
+XExtDisplayInfo *__glXFindDisplay (Display *dpy);
+#endif
+
+#endif /* !__GLX_client_h__ */