+ * Generate new entrypoint
+ *
+ * Use a temporary dispatch offset of ~0 (i.e. -1). Later, when the driver
+ * calls \c _glapi_add_dispatch we'll put in the proper offset. If that
+ * never happens, and the user calls this function, he'll segfault. That's
+ * what you get when you try calling a GL function that doesn't really exist.
+ *
+ * \param funcName Name of the function to create an entry-point for.
+ *
+ * \sa _glapi_add_entrypoint
+ */
+
+static struct _glapi_function *
+add_function_name( const char * funcName )
+{
+ struct _glapi_function * entry = NULL;
+
+ if (NumExtEntryPoints < MAX_EXTENSION_FUNCS) {
+ _glapi_proc entrypoint = generate_entrypoint(~0);
+ if (entrypoint != NULL) {
+ entry = & ExtEntryTable[NumExtEntryPoints];
+
+ ExtEntryTable[NumExtEntryPoints].name = str_dup(funcName);
+ ExtEntryTable[NumExtEntryPoints].parameter_signature = NULL;
+ ExtEntryTable[NumExtEntryPoints].dispatch_offset = ~0;
+ ExtEntryTable[NumExtEntryPoints].dispatch_stub = entrypoint;
+ NumExtEntryPoints++;
+ }
+ }
+
+ return entry;
+}
+
+
+/**
+ * Fill-in the dispatch stub for the named function.
+ *
+ * This function is intended to be called by a hardware driver. When called,
+ * a dispatch stub may be created created for the function. A pointer to this
+ * dispatch function will be returned by glXGetProcAddress.
+ *
+ * \param function_names Array of pointers to function names that should
+ * share a common dispatch offset.
+ * \param parameter_signature String representing the types of the parameters
+ * passed to the named function. Parameter types
+ * are converted to characters using the following
+ * rules:
+ * - 'i' for \c GLint, \c GLuint, and \c GLenum
+ * - 'p' for any pointer type
+ * - 'f' for \c GLfloat and \c GLclampf
+ * - 'd' for \c GLdouble and \c GLclampd
+ *
+ * \returns
+ * The offset in the dispatch table of the named function. A pointer to the
+ * driver's implementation of the named function should be stored at
+ * \c dispatch_table[\c offset].
+ *
+ * \sa glXGetProcAddress
+ *
+ * \warning
+ * This function can only handle up to 8 names at a time. As far as I know,
+ * the maximum number of names ever associated with an existing GL function is
+ * 4 (\c glPointParameterfSGIS, \c glPointParameterfEXT,
+ * \c glPointParameterfARB, and \c glPointParameterf), so this should not be
+ * too painful of a limitation.
+ *
+ * \todo
+ * Determine whether or not \c parameter_signature should be allowed to be
+ * \c NULL. It doesn't seem like much of a hardship for drivers to have to
+ * pass in an empty string.
+ *
+ * \todo
+ * Determine if code should be added to reject function names that start with
+ * 'glX'.
+ *
+ * \bug
+ * Add code to compare \c parameter_signature with the parameter signature of
+ * a static function. In order to do that, we need to find a way to \b get
+ * the parameter signature of a static function.