+#endif /* GLX_NV_float_buffer */
+
+
+
+/*
+ * #?. GLX_MESA_swap_frame_usage
+ */
+#ifndef GLX_MESA_swap_frame_usage
+#define GLX_MESA_swap_frame_usage 1
+
+extern int glXGetFrameUsageMESA(Display *dpy, GLXDrawable drawable, float *usage);
+extern int glXBeginFrameTrackingMESA(Display *dpy, GLXDrawable drawable);
+extern int glXEndFrameTrackingMESA(Display *dpy, GLXDrawable drawable);
+extern int glXQueryFrameTrackingMESA(Display *dpy, GLXDrawable drawable, int64_t *swapCount, int64_t *missedFrames, float *lastMissedUsage);
+
+typedef int (*PFNGLXGETFRAMEUSAGEMESAPROC) (Display *dpy, GLXDrawable drawable, float *usage);
+typedef int (*PFNGLXBEGINFRAMETRACKINGMESAPROC)(Display *dpy, GLXDrawable drawable);
+typedef int (*PFNGLXENDFRAMETRACKINGMESAPROC)(Display *dpy, GLXDrawable drawable);
+typedef int (*PFNGLXQUERYFRAMETRACKINGMESAPROC)(Display *dpy, GLXDrawable drawable, int64_t *swapCount, int64_t *missedFrames, float *lastMissedUsage);
+
+#endif /* GLX_MESA_swap_frame_usage */
+
+
+
+/*
+ * #?. GLX_MESA_swap_control
+ */
+#ifndef GLX_MESA_swap_control
+#define GLX_MESA_swap_control 1
+
+extern int glXSwapIntervalMESA(unsigned int interval);
+extern int glXGetSwapIntervalMESA(void);
+
+typedef int (*PFNGLXSWAPINTERVALMESAPROC)(unsigned int interval);
+typedef int (*PFNGLXGETSWAPINTERVALMESAPROC)(void);
+
+#endif /* GLX_MESA_swap_control */
+
+
+
+/*
+ * #?. GLX_EXT_texture_from_pixmap
+ * XXX not finished?
+ */
+#ifndef GLX_EXT_texture_from_pixmap
+#define GLX_EXT_texture_from_pixmap 1
+
+#define GLX_BIND_TO_TEXTURE_RGB_EXT 0x20D0
+#define GLX_BIND_TO_TEXTURE_RGBA_EXT 0x20D1
+#define GLX_BIND_TO_MIPMAP_TEXTURE_EXT 0x20D2
+#define GLX_BIND_TO_TEXTURE_TARGETS_EXT 0x20D3
+#define GLX_Y_INVERTED_EXT 0x20D4
+
+#define GLX_TEXTURE_FORMAT_EXT 0x20D5
+#define GLX_TEXTURE_TARGET_EXT 0x20D6
+#define GLX_MIPMAP_TEXTURE_EXT 0x20D7
+
+#define GLX_TEXTURE_FORMAT_NONE_EXT 0x20D8
+#define GLX_TEXTURE_FORMAT_RGB_EXT 0x20D9
+#define GLX_TEXTURE_FORMAT_RGBA_EXT 0x20DA
+
+#define GLX_TEXTURE_1D_BIT_EXT 0x00000001
+#define GLX_TEXTURE_2D_BIT_EXT 0x00000002
+#define GLX_TEXTURE_RECTANGLE_BIT_EXT 0x00000004
+
+#define GLX_TEXTURE_1D_EXT 0x20DB
+#define GLX_TEXTURE_2D_EXT 0x20DC
+#define GLX_TEXTURE_RECTANGLE_EXT 0x20DD
+
+#define GLX_FRONT_LEFT_EXT 0x20DE
+#define GLX_FRONT_RIGHT_EXT 0x20DF
+#define GLX_BACK_LEFT_EXT 0x20E0
+#define GLX_BACK_RIGHT_EXT 0x20E1
+#define GLX_FRONT_EXT GLX_FRONT_LEFT_EXT
+#define GLX_BACK_EXT GLX_BACK_LEFT_EXT
+#define GLX_AUX0_EXT 0x20E2
+#define GLX_AUX1_EXT 0x20E3
+#define GLX_AUX2_EXT 0x20E4
+#define GLX_AUX3_EXT 0x20E5
+#define GLX_AUX4_EXT 0x20E6
+#define GLX_AUX5_EXT 0x20E7
+#define GLX_AUX6_EXT 0x20E8
+#define GLX_AUX7_EXT 0x20E9
+#define GLX_AUX8_EXT 0x20EA
+#define GLX_AUX9_EXT 0x20EB
+
+extern void glXBindTexImageEXT(Display *dpy, GLXDrawable drawable, int buffer, const int *attrib_list);
+extern void glXReleaseTexImageEXT(Display *dpy, GLXDrawable drawable, int buffer);
+
+#endif /* GLX_EXT_texture_from_pixmap */
+
+
+
+
+/*** Should these go here, or in another header? */
+/*
+** GLX Events
+*/
+typedef struct {
+ int event_type; /* GLX_DAMAGED or GLX_SAVED */
+ int draw_type; /* GLX_WINDOW or GLX_PBUFFER */
+ unsigned long serial; /* # of last request processed by server */
+ Bool send_event; /* true if this came for SendEvent request */
+ Display *display; /* display the event was read from */
+ GLXDrawable drawable; /* XID of Drawable */
+ unsigned int buffer_mask; /* mask indicating which buffers are affected */
+ unsigned int aux_buffer; /* which aux buffer was affected */
+ int x, y;
+ int width, height;
+ int count; /* if nonzero, at least this many more */
+} GLXPbufferClobberEvent;
+
+typedef struct {
+ int type;
+ unsigned long serial; /* # of last request processed by server */
+ Bool send_event; /* true if this came from a SendEvent request */
+ Display *display; /* Display the event was read from */
+ GLXDrawable drawable; /* drawable on which event was requested in event mask */
+ int event_type;
+ int64_t ust;
+ int64_t msc;
+ int64_t sbc;
+} GLXBufferSwapComplete;
+
+typedef union __GLXEvent {
+ GLXPbufferClobberEvent glxpbufferclobber;
+ GLXBufferSwapComplete glxbufferswapcomplete;
+ long pad[24];
+} GLXEvent;