-#define GLX_WINDOW_BIT 0x00000001
-#define GLX_PIXMAP_BIT 0x00000002
-#define GLX_PBUFFER_BIT 0x00000004
-#define GLX_RGBA_BIT 0x00000001
-#define GLX_COLOR_INDEX_BIT 0x00000002
-#define GLX_PBUFFER_CLOBBER_MASK 0x08000000
-#define GLX_FRONT_LEFT_BUFFER_BIT 0x00000001
-#define GLX_FRONT_RIGHT_BUFFER_BIT 0x00000002
-#define GLX_BACK_LEFT_BUFFER_BIT 0x00000004
-#define GLX_BACK_RIGHT_BUFFER_BIT 0x00000008
-#define GLX_AUX_BUFFERS_BIT 0x00000010
-#define GLX_DEPTH_BUFFER_BIT 0x00000020
-#define GLX_STENCIL_BUFFER_BIT 0x00000040
-#define GLX_ACCUM_BUFFER_BIT 0x00000080
-#define GLX_CONFIG_CAVEAT 0x20
-#define GLX_X_VISUAL_TYPE 0x22
-#define GLX_TRANSPARENT_TYPE 0x23
-#define GLX_TRANSPARENT_INDEX_VALUE 0x24
-#define GLX_TRANSPARENT_RED_VALUE 0x25
-#define GLX_TRANSPARENT_GREEN_VALUE 0x26
-#define GLX_TRANSPARENT_BLUE_VALUE 0x27
-#define GLX_TRANSPARENT_ALPHA_VALUE 0x28
-#define GLX_DONT_CARE 0xFFFFFFFF
-#define GLX_NONE 0x8000
-#define GLX_SLOW_CONFIG 0x8001
-#define GLX_TRUE_COLOR 0x8002
-#define GLX_DIRECT_COLOR 0x8003
-#define GLX_PSEUDO_COLOR 0x8004
-#define GLX_STATIC_COLOR 0x8005
-#define GLX_GRAY_SCALE 0x8006
-#define GLX_STATIC_GRAY 0x8007
-#define GLX_TRANSPARENT_RGB 0x8008
-#define GLX_TRANSPARENT_INDEX 0x8009
-#define GLX_VISUAL_ID 0x800B
-#define GLX_SCREEN 0x800C
-#define GLX_NON_CONFORMANT_CONFIG 0x800D
-#define GLX_DRAWABLE_TYPE 0x8010
-#define GLX_RENDER_TYPE 0x8011
-#define GLX_X_RENDERABLE 0x8012
-#define GLX_FBCONFIG_ID 0x8013
-#define GLX_RGBA_TYPE 0x8014
-#define GLX_COLOR_INDEX_TYPE 0x8015
-#define GLX_MAX_PBUFFER_WIDTH 0x8016
-#define GLX_MAX_PBUFFER_HEIGHT 0x8017
-#define GLX_MAX_PBUFFER_PIXELS 0x8018
-#define GLX_PRESERVED_CONTENTS 0x801B
-#define GLX_LARGEST_PBUFFER 0x801C
-#define GLX_WIDTH 0x801D
-#define GLX_HEIGHT 0x801E
-#define GLX_EVENT_MASK 0x801F
-#define GLX_DAMAGED 0x8020
-#define GLX_SAVED 0x8021
-#define GLX_WINDOW 0x8022
-#define GLX_PBUFFER 0x8023
-#define GLX_PBUFFER_HEIGHT 0x8040
-#define GLX_PBUFFER_WIDTH 0x8041
-#endif
+#define GLX_VERSION_1_3 1
+typedef XID GLXContextID;
+typedef struct __GLXFBConfigRec *GLXFBConfig;
+typedef XID GLXWindow;
+typedef XID GLXPbuffer;
+#define GLX_WINDOW_BIT 0x00000001
+#define GLX_PIXMAP_BIT 0x00000002
+#define GLX_PBUFFER_BIT 0x00000004
+#define GLX_RGBA_BIT 0x00000001
+#define GLX_COLOR_INDEX_BIT 0x00000002
+#define GLX_PBUFFER_CLOBBER_MASK 0x08000000
+#define GLX_FRONT_LEFT_BUFFER_BIT 0x00000001
+#define GLX_FRONT_RIGHT_BUFFER_BIT 0x00000002
+#define GLX_BACK_LEFT_BUFFER_BIT 0x00000004
+#define GLX_BACK_RIGHT_BUFFER_BIT 0x00000008
+#define GLX_AUX_BUFFERS_BIT 0x00000010
+#define GLX_DEPTH_BUFFER_BIT 0x00000020
+#define GLX_STENCIL_BUFFER_BIT 0x00000040
+#define GLX_ACCUM_BUFFER_BIT 0x00000080
+#define GLX_CONFIG_CAVEAT 0x20
+#define GLX_X_VISUAL_TYPE 0x22
+#define GLX_TRANSPARENT_TYPE 0x23
+#define GLX_TRANSPARENT_INDEX_VALUE 0x24
+#define GLX_TRANSPARENT_RED_VALUE 0x25
+#define GLX_TRANSPARENT_GREEN_VALUE 0x26
+#define GLX_TRANSPARENT_BLUE_VALUE 0x27
+#define GLX_TRANSPARENT_ALPHA_VALUE 0x28
+#define GLX_DONT_CARE 0xFFFFFFFF
+#define GLX_NONE 0x8000
+#define GLX_SLOW_CONFIG 0x8001
+#define GLX_TRUE_COLOR 0x8002
+#define GLX_DIRECT_COLOR 0x8003
+#define GLX_PSEUDO_COLOR 0x8004
+#define GLX_STATIC_COLOR 0x8005
+#define GLX_GRAY_SCALE 0x8006
+#define GLX_STATIC_GRAY 0x8007
+#define GLX_TRANSPARENT_RGB 0x8008
+#define GLX_TRANSPARENT_INDEX 0x8009
+#define GLX_VISUAL_ID 0x800B
+#define GLX_SCREEN 0x800C
+#define GLX_NON_CONFORMANT_CONFIG 0x800D
+#define GLX_DRAWABLE_TYPE 0x8010
+#define GLX_RENDER_TYPE 0x8011
+#define GLX_X_RENDERABLE 0x8012
+#define GLX_FBCONFIG_ID 0x8013
+#define GLX_RGBA_TYPE 0x8014
+#define GLX_COLOR_INDEX_TYPE 0x8015
+#define GLX_MAX_PBUFFER_WIDTH 0x8016
+#define GLX_MAX_PBUFFER_HEIGHT 0x8017
+#define GLX_MAX_PBUFFER_PIXELS 0x8018
+#define GLX_PRESERVED_CONTENTS 0x801B
+#define GLX_LARGEST_PBUFFER 0x801C
+#define GLX_WIDTH 0x801D
+#define GLX_HEIGHT 0x801E
+#define GLX_EVENT_MASK 0x801F
+#define GLX_DAMAGED 0x8020
+#define GLX_SAVED 0x8021
+#define GLX_WINDOW 0x8022
+#define GLX_PBUFFER 0x8023
+#define GLX_PBUFFER_HEIGHT 0x8040
+#define GLX_PBUFFER_WIDTH 0x8041
+typedef GLXFBConfig *( *PFNGLXGETFBCONFIGSPROC) (Display *dpy, int screen, int *nelements);
+typedef GLXFBConfig *( *PFNGLXCHOOSEFBCONFIGPROC) (Display *dpy, int screen, const int *attrib_list, int *nelements);
+typedef int ( *PFNGLXGETFBCONFIGATTRIBPROC) (Display *dpy, GLXFBConfig config, int attribute, int *value);
+typedef XVisualInfo *( *PFNGLXGETVISUALFROMFBCONFIGPROC) (Display *dpy, GLXFBConfig config);
+typedef GLXWindow ( *PFNGLXCREATEWINDOWPROC) (Display *dpy, GLXFBConfig config, Window win, const int *attrib_list);
+typedef void ( *PFNGLXDESTROYWINDOWPROC) (Display *dpy, GLXWindow win);
+typedef GLXPixmap ( *PFNGLXCREATEPIXMAPPROC) (Display *dpy, GLXFBConfig config, Pixmap pixmap, const int *attrib_list);
+typedef void ( *PFNGLXDESTROYPIXMAPPROC) (Display *dpy, GLXPixmap pixmap);
+typedef GLXPbuffer ( *PFNGLXCREATEPBUFFERPROC) (Display *dpy, GLXFBConfig config, const int *attrib_list);
+typedef void ( *PFNGLXDESTROYPBUFFERPROC) (Display *dpy, GLXPbuffer pbuf);
+typedef void ( *PFNGLXQUERYDRAWABLEPROC) (Display *dpy, GLXDrawable draw, int attribute, unsigned int *value);
+typedef GLXContext ( *PFNGLXCREATENEWCONTEXTPROC) (Display *dpy, GLXFBConfig config, int render_type, GLXContext share_list, Bool direct);
+typedef Bool ( *PFNGLXMAKECONTEXTCURRENTPROC) (Display *dpy, GLXDrawable draw, GLXDrawable read, GLXContext ctx);
+typedef GLXDrawable ( *PFNGLXGETCURRENTREADDRAWABLEPROC) (void);
+typedef int ( *PFNGLXQUERYCONTEXTPROC) (Display *dpy, GLXContext ctx, int attribute, int *value);
+typedef void ( *PFNGLXSELECTEVENTPROC) (Display *dpy, GLXDrawable draw, unsigned long event_mask);
+typedef void ( *PFNGLXGETSELECTEDEVENTPROC) (Display *dpy, GLXDrawable draw, unsigned long *event_mask);
+#ifdef GLX_GLXEXT_PROTOTYPES
+GLXFBConfig *glXGetFBConfigs (Display *dpy, int screen, int *nelements);
+GLXFBConfig *glXChooseFBConfig (Display *dpy, int screen, const int *attrib_list, int *nelements);
+int glXGetFBConfigAttrib (Display *dpy, GLXFBConfig config, int attribute, int *value);
+XVisualInfo *glXGetVisualFromFBConfig (Display *dpy, GLXFBConfig config);
+GLXWindow glXCreateWindow (Display *dpy, GLXFBConfig config, Window win, const int *attrib_list);
+void glXDestroyWindow (Display *dpy, GLXWindow win);
+GLXPixmap glXCreatePixmap (Display *dpy, GLXFBConfig config, Pixmap pixmap, const int *attrib_list);
+void glXDestroyPixmap (Display *dpy, GLXPixmap pixmap);
+GLXPbuffer glXCreatePbuffer (Display *dpy, GLXFBConfig config, const int *attrib_list);
+void glXDestroyPbuffer (Display *dpy, GLXPbuffer pbuf);
+void glXQueryDrawable (Display *dpy, GLXDrawable draw, int attribute, unsigned int *value);
+GLXContext glXCreateNewContext (Display *dpy, GLXFBConfig config, int render_type, GLXContext share_list, Bool direct);
+Bool glXMakeContextCurrent (Display *dpy, GLXDrawable draw, GLXDrawable read, GLXContext ctx);
+GLXDrawable glXGetCurrentReadDrawable (void);
+int glXQueryContext (Display *dpy, GLXContext ctx, int attribute, int *value);
+void glXSelectEvent (Display *dpy, GLXDrawable draw, unsigned long event_mask);
+void glXGetSelectedEvent (Display *dpy, GLXDrawable draw, unsigned long *event_mask);
+#endif
+#endif /* GLX_VERSION_1_3 */