1999-11-11 01:22:25 +00:00
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/*
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* Mesa 3-D graphics library
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2002-03-07 21:50:41 +00:00
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* Version: 4.1
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1999-11-11 01:22:25 +00:00
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*
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2002-03-07 21:50:41 +00:00
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* Copyright (C) 1999-2002 Brian Paul All Rights Reserved.
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1999-11-11 01:22:25 +00:00
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
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* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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1999-11-25 18:17:04 +00:00
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/*
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* This file manages the OpenGL API dispatch layer.
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* The dispatch table (struct _glapi_table) is basically just a list
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* of function pointers.
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* There are functions to set/get the current dispatch table for the
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* current thread and to manage registration/dispatch of dynamically
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* added extension functions.
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2000-01-28 19:03:33 +00:00
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*
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* It's intended that this file and the other glapi*.[ch] files are
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* flexible enough to be reused in several places: XFree86, DRI-
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* based libGL.so, and perhaps the SGI SI.
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*
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2002-06-29 20:48:15 +01:00
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* NOTE: There are no dependencies on Mesa in this code.
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2001-01-23 23:35:47 +00:00
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*
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* Versions (API changes):
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* 2000/02/23 - original version for Mesa 3.3 and XFree86 4.0
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* 2001/01/16 - added dispatch override feature for Mesa 3.5
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2002-06-29 20:48:15 +01:00
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* 2002/06/28 - added _glapi_set_warning_func(), Mesa 4.1.
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2002-10-02 02:51:44 +01:00
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* 2002/10/01 - _glapi_get_proc_address() will now generate new entrypoints
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* itself (using offset ~0). _glapi_add_entrypoint() can be
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* called afterward and it'll fill in the correct dispatch
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* offset. This allows DRI libGL to avoid probing for DRI
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* drivers! No changes to the public glapi interface.
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1999-11-25 18:17:04 +00:00
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*/
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2000-02-10 21:27:48 +00:00
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#include "glheader.h"
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1999-11-11 01:22:25 +00:00
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#include "glapi.h"
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1999-12-16 12:38:11 +00:00
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#include "glapioffsets.h"
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#include "glapitable.h"
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2000-01-28 19:03:33 +00:00
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#include "glthread.h"
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1999-12-16 17:31:59 +00:00
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2001-03-28 18:19:58 +01:00
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/***** BEGIN NO-OP DISPATCH *****/
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static GLboolean WarnFlag = GL_FALSE;
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2002-06-29 20:48:15 +01:00
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static _glapi_warning_func warning_func;
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2001-03-28 18:19:58 +01:00
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2002-06-29 20:48:15 +01:00
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/*
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* Enable/disable printing of warning messages.
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*/
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2001-03-28 18:19:58 +01:00
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void
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_glapi_noop_enable_warnings(GLboolean enable)
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{
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WarnFlag = enable;
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}
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2002-06-29 20:48:15 +01:00
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/*
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* Register a callback function for reporting errors.
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*/
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void
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_glapi_set_warning_func( _glapi_warning_func func )
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{
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warning_func = func;
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}
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2001-03-28 18:19:58 +01:00
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static GLboolean
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warn(void)
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{
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2002-06-29 20:48:15 +01:00
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if ((WarnFlag || getenv("MESA_DEBUG") || getenv("LIBGL_DEBUG"))
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&& warning_func) {
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2001-03-28 18:19:58 +01:00
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return GL_TRUE;
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2002-06-29 20:48:15 +01:00
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}
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else {
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2001-03-28 18:19:58 +01:00
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return GL_FALSE;
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2002-06-29 20:48:15 +01:00
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}
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2001-03-28 18:19:58 +01:00
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}
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#define KEYWORD1 static
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2004-01-07 12:37:09 +00:00
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#define KEYWORD2 GLAPIENTRY
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2001-03-28 18:19:58 +01:00
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#define NAME(func) NoOp##func
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2002-06-29 20:48:15 +01:00
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#define F NULL
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2001-03-28 18:19:58 +01:00
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2002-06-29 20:48:15 +01:00
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#define DISPATCH(func, args, msg) \
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if (warn()) { \
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warning_func(NULL, "GL User Error: called without context:"); \
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warning_func msg; \
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2001-03-28 18:19:58 +01:00
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}
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2002-06-29 20:48:15 +01:00
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#define RETURN_DISPATCH(func, args, msg) \
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if (warn()) { \
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warning_func(NULL, "GL User Error: called without context:"); \
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warning_func msg; \
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} \
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2001-03-28 18:19:58 +01:00
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return 0
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#define DISPATCH_TABLE_NAME __glapi_noop_table
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#define UNUSED_TABLE_NAME __usused_noop_functions
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#define TABLE_ENTRY(name) (void *) NoOp##name
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static int NoOpUnused(void)
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{
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if (warn()) {
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2002-06-29 20:48:15 +01:00
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warning_func(NULL, "GL User Error: calling extension function without a current context\n");
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2001-03-28 18:19:58 +01:00
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}
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return 0;
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}
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#include "glapitemp.h"
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/***** END NO-OP DISPATCH *****/
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/***** BEGIN THREAD-SAFE DISPATCH *****/
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1999-12-15 15:02:30 +00:00
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#if defined(THREADS)
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1999-12-16 17:31:59 +00:00
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2004-06-29 20:08:20 +01:00
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/**
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* \name Multi-threaded control support variables
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*
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* If thread-safety is supported, there are two potential mechanisms that can
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* be used. The old-style mechanism would set \c _glapi_Dispatch to a special
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* thread-safe dispatch table. These dispatch routines would call
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* \c _glapi_get_dispatch to get the actual dispatch pointer. In this
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* setup \c _glapi_Dispatch could never be \c NULL. This dual layered
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* dispatch setup performed great for single-threaded apps, but didn't
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* perform well for multithreaded apps.
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*
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* In the new mechansim, there are two variables. The first is
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* \c _glapi_DispatchTSD. In the single-threaded case, this variable points
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* to the dispatch table. In the multi-threaded case, this variable is
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* \c NULL, and thread-specific variable \c _gl_DispatchTSD points to the
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* actual dispatch table. \c _glapi_DispatchTSD is used to signal to the
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* static dispatch functions to call \c _glapi_get_dispatch to get the real
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* dispatch table.
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*
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2004-07-02 01:01:09 +01:00
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* There is a race condition in setting \c _glapi_DispatchTSD to \c NULL.
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* It is possible for the original thread to be setting it at the same instant
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* a new thread, perhaps running on a different processor, is clearing it.
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* Because of that, \c ThreadSafe, which can only ever be changed to
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2004-07-05 23:42:14 +01:00
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* \c GL_TRUE, is used to determine whether or not the application is
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2004-07-02 01:01:09 +01:00
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* multithreaded.
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2004-06-29 20:08:20 +01:00
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*/
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/*@{*/
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2004-07-02 01:01:09 +01:00
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static GLboolean ThreadSafe = GL_FALSE; /**< In thread-safe mode? */
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2004-06-29 20:08:20 +01:00
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_glthread_TSD _gl_DispatchTSD; /**< Per-thread dispatch pointer */
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static _glthread_TSD RealDispatchTSD; /**< only when using override */
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static _glthread_TSD ContextTSD; /**< Per-thread context pointer */
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/*@}*/
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2001-03-28 18:19:58 +01:00
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#define DISPATCH_TABLE_NAME __glapi_threadsafe_table
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#define UNUSED_TABLE_NAME __usused_threadsafe_functions
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2004-06-29 20:08:20 +01:00
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#define TABLE_ENTRY(name) (void *) gl##name
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2000-01-07 07:30:13 +00:00
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2004-06-29 20:08:20 +01:00
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static int glUnused(void)
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2001-03-28 18:19:58 +01:00
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{
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return 0;
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}
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1999-12-16 17:31:59 +00:00
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2001-03-28 18:19:58 +01:00
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#include "glapitemp.h"
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1999-12-17 14:51:28 +00:00
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1999-12-15 15:02:30 +00:00
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#endif
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1999-11-11 01:22:25 +00:00
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2001-03-28 18:19:58 +01:00
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/***** END THREAD-SAFE DISPATCH *****/
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struct _glapi_table *_glapi_Dispatch = (struct _glapi_table *) __glapi_noop_table;
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2004-07-02 01:01:09 +01:00
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#if defined( THREADS )
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2004-06-29 20:08:20 +01:00
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struct _glapi_table *_glapi_DispatchTSD = (struct _glapi_table *) __glapi_noop_table;
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2004-07-02 01:01:09 +01:00
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#endif
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2001-03-28 18:19:58 +01:00
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struct _glapi_table *_glapi_RealDispatch = (struct _glapi_table *) __glapi_noop_table;
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2004-07-02 01:01:09 +01:00
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2001-03-28 18:19:58 +01:00
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/* Used when thread safety disabled */
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void *_glapi_Context = NULL;
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1999-11-11 01:22:25 +00:00
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2001-01-23 23:35:47 +00:00
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static GLboolean DispatchOverride = GL_FALSE;
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2002-10-02 02:51:44 +01:00
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2001-03-28 18:19:58 +01:00
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/* strdup() is actually not a standard ANSI C or POSIX routine.
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* Irix will not define it if ANSI mode is in effect.
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*/
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static char *
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str_dup(const char *str)
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2000-03-27 22:13:58 +01:00
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{
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2000-03-29 19:46:11 +01:00
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char *copy;
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copy = (char*) malloc(strlen(str) + 1);
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if (!copy)
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return NULL;
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strcpy(copy, str);
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return copy;
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2000-03-27 22:13:58 +01:00
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}
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1999-12-16 17:31:59 +00:00
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/*
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* We should call this periodically from a function such as glXMakeCurrent
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2002-03-07 21:50:41 +00:00
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* in order to test if multiple threads are being used.
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1999-12-16 17:31:59 +00:00
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*/
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void
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_glapi_check_multithread(void)
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{
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#if defined(THREADS)
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2004-07-02 01:01:09 +01:00
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if (!ThreadSafe) {
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1999-12-16 17:31:59 +00:00
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static unsigned long knownID;
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static GLboolean firstCall = GL_TRUE;
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if (firstCall) {
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knownID = _glthread_GetID();
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firstCall = GL_FALSE;
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}
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else if (knownID != _glthread_GetID()) {
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2004-07-02 01:01:09 +01:00
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ThreadSafe = GL_TRUE;
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2004-06-29 20:08:20 +01:00
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_glapi_set_dispatch(NULL);
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1999-12-16 17:31:59 +00:00
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}
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}
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2004-06-29 20:08:20 +01:00
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else if (!_glapi_get_dispatch()) {
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1999-12-16 17:31:59 +00:00
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/* make sure that this thread's dispatch pointer isn't null */
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2004-06-29 20:08:20 +01:00
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_glapi_set_dispatch(NULL);
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1999-12-15 15:02:30 +00:00
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}
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1999-12-16 17:31:59 +00:00
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#endif
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}
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1999-12-15 15:02:30 +00:00
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1999-11-11 01:22:25 +00:00
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1999-12-17 14:51:28 +00:00
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/*
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* Set the current context pointer for this thread.
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* The context pointer is an opaque type which should be cast to
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* void from the real context pointer type.
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*/
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void
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2000-01-28 20:17:42 +00:00
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_glapi_set_context(void *context)
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1999-12-17 14:51:28 +00:00
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{
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#if defined(THREADS)
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2000-02-10 21:27:48 +00:00
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_glthread_SetTSD(&ContextTSD, context);
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2004-07-02 01:01:09 +01:00
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_glapi_Context = (ThreadSafe) ? NULL : context;
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1999-12-17 14:51:28 +00:00
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#else
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2000-01-28 20:17:42 +00:00
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_glapi_Context = context;
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1999-12-17 14:51:28 +00:00
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#endif
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}
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/*
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* Get the current context pointer for this thread.
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* The context pointer is an opaque type which should be cast from
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* void to the real context pointer type.
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*/
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void *
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2000-01-28 20:17:42 +00:00
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_glapi_get_context(void)
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1999-12-17 14:51:28 +00:00
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{
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#if defined(THREADS)
|
2004-07-02 01:01:09 +01:00
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if (ThreadSafe) {
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1999-12-17 14:51:28 +00:00
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return _glthread_GetTSD(&ContextTSD);
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}
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else {
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2000-01-28 20:17:42 +00:00
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return _glapi_Context;
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1999-12-17 14:51:28 +00:00
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}
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#else
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2000-01-28 20:17:42 +00:00
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return _glapi_Context;
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1999-12-17 14:51:28 +00:00
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#endif
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}
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1999-11-19 22:33:50 +00:00
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/*
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* Set the global or per-thread dispatch table pointer.
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*/
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void
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_glapi_set_dispatch(struct _glapi_table *dispatch)
|
1999-11-11 01:22:25 +00:00
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{
|
2004-07-05 23:40:54 +01:00
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if (!dispatch) {
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/* use the no-op functions */
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dispatch = (struct _glapi_table *) __glapi_noop_table;
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}
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1999-11-19 22:33:50 +00:00
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#ifdef DEBUG
|
2004-07-05 23:40:54 +01:00
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else {
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1999-11-19 22:33:50 +00:00
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_glapi_check_table(dispatch);
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}
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#endif
|
1999-11-11 01:22:25 +00:00
|
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1999-11-19 22:33:50 +00:00
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#if defined(THREADS)
|
2001-01-23 23:35:47 +00:00
|
|
|
if (DispatchOverride) {
|
2004-07-05 23:40:54 +01:00
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|
|
_glthread_SetTSD(&RealDispatchTSD, (void *) dispatch);
|
2004-07-02 01:01:09 +01:00
|
|
|
if (ThreadSafe)
|
2001-03-28 18:19:58 +01:00
|
|
|
_glapi_RealDispatch = (struct _glapi_table*) __glapi_threadsafe_table;
|
2000-09-05 21:17:37 +01:00
|
|
|
else
|
2001-01-23 23:35:47 +00:00
|
|
|
_glapi_RealDispatch = dispatch;
|
2000-09-26 16:27:20 +01:00
|
|
|
}
|
|
|
|
else {
|
2001-01-23 23:35:47 +00:00
|
|
|
/* normal operation */
|
2004-07-05 23:40:54 +01:00
|
|
|
_glthread_SetTSD(&_gl_DispatchTSD, (void *) dispatch);
|
2004-07-02 01:01:09 +01:00
|
|
|
if (ThreadSafe) {
|
|
|
|
_glapi_Dispatch = (struct _glapi_table *) __glapi_threadsafe_table;
|
|
|
|
_glapi_DispatchTSD = NULL;
|
|
|
|
}
|
|
|
|
else {
|
2004-07-05 23:40:54 +01:00
|
|
|
_glapi_Dispatch = dispatch;
|
2004-07-02 01:01:09 +01:00
|
|
|
_glapi_DispatchTSD = dispatch;
|
|
|
|
}
|
2000-09-05 21:17:37 +01:00
|
|
|
}
|
|
|
|
#else /*THREADS*/
|
2001-01-23 23:35:47 +00:00
|
|
|
if (DispatchOverride) {
|
|
|
|
_glapi_RealDispatch = dispatch;
|
|
|
|
}
|
|
|
|
else {
|
|
|
|
_glapi_Dispatch = dispatch;
|
|
|
|
}
|
2000-09-05 21:17:37 +01:00
|
|
|
#endif /*THREADS*/
|
1999-11-11 01:22:25 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
|
1999-12-16 17:31:59 +00:00
|
|
|
|
1999-11-19 22:33:50 +00:00
|
|
|
/*
|
1999-12-16 17:31:59 +00:00
|
|
|
* Return pointer to current dispatch table for calling thread.
|
1999-11-19 22:33:50 +00:00
|
|
|
*/
|
|
|
|
struct _glapi_table *
|
|
|
|
_glapi_get_dispatch(void)
|
1999-11-11 01:22:25 +00:00
|
|
|
{
|
1999-11-19 22:33:50 +00:00
|
|
|
#if defined(THREADS)
|
2004-07-02 01:01:09 +01:00
|
|
|
if (ThreadSafe) {
|
2001-01-23 23:35:47 +00:00
|
|
|
if (DispatchOverride) {
|
|
|
|
return (struct _glapi_table *) _glthread_GetTSD(&RealDispatchTSD);
|
|
|
|
}
|
|
|
|
else {
|
2004-06-29 20:08:20 +01:00
|
|
|
return (struct _glapi_table *) _glthread_GetTSD(&_gl_DispatchTSD);
|
2001-01-23 23:35:47 +00:00
|
|
|
}
|
1999-12-16 17:31:59 +00:00
|
|
|
}
|
1999-12-17 12:20:23 +00:00
|
|
|
else {
|
2001-01-23 23:35:47 +00:00
|
|
|
if (DispatchOverride) {
|
|
|
|
assert(_glapi_RealDispatch);
|
|
|
|
return _glapi_RealDispatch;
|
|
|
|
}
|
|
|
|
else {
|
2004-06-29 20:08:20 +01:00
|
|
|
assert(_glapi_DispatchTSD);
|
|
|
|
return _glapi_DispatchTSD;
|
2001-01-23 23:35:47 +00:00
|
|
|
}
|
1999-12-17 12:20:23 +00:00
|
|
|
}
|
1999-11-19 22:33:50 +00:00
|
|
|
#else
|
2000-01-17 19:28:31 +00:00
|
|
|
return _glapi_Dispatch;
|
1999-11-19 22:33:50 +00:00
|
|
|
#endif
|
1999-11-11 01:22:25 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
|
2001-01-23 23:35:47 +00:00
|
|
|
/*
|
|
|
|
* Notes on dispatch overrride:
|
|
|
|
*
|
|
|
|
* Dispatch override allows an external agent to hook into the GL dispatch
|
|
|
|
* mechanism before execution goes into the core rendering library. For
|
|
|
|
* example, a trace mechanism would insert itself as an overrider, print
|
|
|
|
* logging info for each GL function, then dispatch to the real GL function.
|
|
|
|
*
|
|
|
|
* libGLS (GL Stream library) is another agent that might use override.
|
|
|
|
*
|
|
|
|
* We don't allow more than one layer of overriding at this time.
|
|
|
|
* In the future we may allow nested/layered override. In that case
|
|
|
|
* _glapi_begin_dispatch_override() will return an override layer,
|
|
|
|
* _glapi_end_dispatch_override(layer) will remove an override layer
|
|
|
|
* and _glapi_get_override_dispatch(layer) will return the dispatch
|
|
|
|
* table for a given override layer. layer = 0 will be the "real"
|
|
|
|
* dispatch table.
|
|
|
|
*/
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Return: dispatch override layer number.
|
|
|
|
*/
|
|
|
|
int
|
|
|
|
_glapi_begin_dispatch_override(struct _glapi_table *override)
|
2000-09-05 21:17:37 +01:00
|
|
|
{
|
2001-01-23 23:35:47 +00:00
|
|
|
struct _glapi_table *real = _glapi_get_dispatch();
|
|
|
|
|
|
|
|
assert(!DispatchOverride); /* can't nest at this time */
|
|
|
|
DispatchOverride = GL_TRUE;
|
|
|
|
|
|
|
|
_glapi_set_dispatch(real);
|
2000-09-05 21:17:37 +01:00
|
|
|
|
|
|
|
#if defined(THREADS)
|
2004-06-29 20:08:20 +01:00
|
|
|
_glthread_SetTSD(&_gl_DispatchTSD, (void *) override);
|
2004-07-02 01:01:09 +01:00
|
|
|
if ( ThreadSafe ) {
|
2001-03-28 18:19:58 +01:00
|
|
|
_glapi_Dispatch = (struct _glapi_table *) __glapi_threadsafe_table;
|
2004-07-02 01:01:09 +01:00
|
|
|
_glapi_DispatchTSD = NULL;
|
2004-06-29 20:08:20 +01:00
|
|
|
}
|
|
|
|
else {
|
2001-01-23 23:35:47 +00:00
|
|
|
_glapi_Dispatch = override;
|
2004-06-29 20:08:20 +01:00
|
|
|
_glapi_DispatchTSD = override;
|
|
|
|
}
|
2001-01-23 23:35:47 +00:00
|
|
|
#else
|
|
|
|
_glapi_Dispatch = override;
|
|
|
|
#endif
|
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
void
|
|
|
|
_glapi_end_dispatch_override(int layer)
|
|
|
|
{
|
|
|
|
struct _glapi_table *real = _glapi_get_dispatch();
|
|
|
|
(void) layer;
|
|
|
|
DispatchOverride = GL_FALSE;
|
|
|
|
_glapi_set_dispatch(real);
|
|
|
|
/* the rest of this isn't needed, just play it safe */
|
|
|
|
#if defined(THREADS)
|
|
|
|
_glthread_SetTSD(&RealDispatchTSD, NULL);
|
|
|
|
#endif
|
|
|
|
_glapi_RealDispatch = NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
struct _glapi_table *
|
|
|
|
_glapi_get_override_dispatch(int layer)
|
|
|
|
{
|
|
|
|
if (layer == 0) {
|
|
|
|
return _glapi_get_dispatch();
|
2000-09-05 21:17:37 +01:00
|
|
|
}
|
|
|
|
else {
|
2001-01-23 23:35:47 +00:00
|
|
|
if (DispatchOverride) {
|
|
|
|
#if defined(THREADS)
|
2004-06-29 20:08:20 +01:00
|
|
|
return (struct _glapi_table *) _glthread_GetTSD(&_gl_DispatchTSD);
|
2000-09-05 21:17:37 +01:00
|
|
|
#else
|
2001-01-23 23:35:47 +00:00
|
|
|
return _glapi_Dispatch;
|
2000-09-05 21:17:37 +01:00
|
|
|
#endif
|
2001-01-23 23:35:47 +00:00
|
|
|
}
|
|
|
|
else {
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
}
|
2000-09-05 21:17:37 +01:00
|
|
|
}
|
2001-01-23 23:35:47 +00:00
|
|
|
|
2000-09-05 21:17:37 +01:00
|
|
|
|
2000-03-19 01:10:11 +00:00
|
|
|
struct name_address_offset {
|
|
|
|
const char *Name;
|
|
|
|
GLvoid *Address;
|
|
|
|
GLuint Offset;
|
|
|
|
};
|
|
|
|
|
1999-12-16 12:38:11 +00:00
|
|
|
|
2004-06-29 20:08:20 +01:00
|
|
|
#if !defined( USE_X86_ASM )
|
2004-05-27 01:05:13 +01:00
|
|
|
#define NEED_FUNCTION_POINTER
|
2004-06-29 20:08:20 +01:00
|
|
|
#endif
|
2004-05-27 01:05:13 +01:00
|
|
|
|
2002-10-02 02:51:44 +01:00
|
|
|
/* The code in this file is auto-generated with Python */
|
2001-11-18 22:48:11 +00:00
|
|
|
#include "glprocs.h"
|
2000-03-19 01:10:11 +00:00
|
|
|
|
|
|
|
|
2004-05-27 01:05:13 +01:00
|
|
|
static const glprocs_table_t *
|
|
|
|
find_entry( const char * n )
|
|
|
|
{
|
|
|
|
unsigned i;
|
|
|
|
|
|
|
|
for ( i = 0 ; static_functions[i].Name_offset >= 0 ; i++ ) {
|
|
|
|
const char * test_name;
|
|
|
|
|
|
|
|
test_name = gl_string_table + static_functions[i].Name_offset;
|
|
|
|
if (strcmp(test_name, n) == 0) {
|
|
|
|
return & static_functions[i];
|
|
|
|
}
|
|
|
|
}
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
2000-03-19 01:10:11 +00:00
|
|
|
/*
|
|
|
|
* Return dispatch table offset of the named static (built-in) function.
|
|
|
|
* Return -1 if function not found.
|
|
|
|
*/
|
|
|
|
static GLint
|
|
|
|
get_static_proc_offset(const char *funcName)
|
|
|
|
{
|
2004-05-27 01:05:13 +01:00
|
|
|
const glprocs_table_t * const f = find_entry( funcName );
|
|
|
|
|
|
|
|
if ( f != NULL ) {
|
|
|
|
return f->Offset;
|
2000-03-19 01:10:11 +00:00
|
|
|
}
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
2004-06-29 20:08:20 +01:00
|
|
|
#ifdef USE_X86_ASM
|
|
|
|
extern const GLubyte gl_dispatch_functions_start[];
|
|
|
|
|
|
|
|
# if defined(PTHREADS)
|
|
|
|
# define X86_DISPATCH_FUNCTION_SIZE 32
|
|
|
|
# else
|
|
|
|
# define X86_DISPATCH_FUNCTION_SIZE 16
|
|
|
|
# endif
|
|
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Return dispatch function address the named static (built-in) function.
|
|
|
|
* Return NULL if function not found.
|
|
|
|
*/
|
|
|
|
static const GLvoid *
|
|
|
|
get_static_proc_address(const char *funcName)
|
|
|
|
{
|
|
|
|
const glprocs_table_t * const f = find_entry( funcName );
|
|
|
|
|
|
|
|
if ( f != NULL ) {
|
|
|
|
return gl_dispatch_functions_start
|
|
|
|
+ (X86_DISPATCH_FUNCTION_SIZE * f->Offset);
|
|
|
|
}
|
|
|
|
else {
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
#else
|
|
|
|
|
|
|
|
|
2000-03-19 01:10:11 +00:00
|
|
|
/*
|
|
|
|
* Return dispatch function address the named static (built-in) function.
|
|
|
|
* Return NULL if function not found.
|
|
|
|
*/
|
2004-05-27 01:05:13 +01:00
|
|
|
static const GLvoid *
|
2000-03-19 01:10:11 +00:00
|
|
|
get_static_proc_address(const char *funcName)
|
|
|
|
{
|
2004-05-27 01:05:13 +01:00
|
|
|
const glprocs_table_t * const f = find_entry( funcName );
|
|
|
|
return ( f != NULL ) ? f->Address : NULL;
|
|
|
|
}
|
|
|
|
|
2004-06-29 20:08:20 +01:00
|
|
|
#endif /* USE_X86_ASM */
|
|
|
|
|
2004-05-27 01:05:13 +01:00
|
|
|
|
|
|
|
static const char *
|
|
|
|
get_static_proc_name( GLuint offset )
|
|
|
|
{
|
|
|
|
unsigned i;
|
|
|
|
|
|
|
|
for ( i = 0 ; static_functions[i].Name_offset >= 0 ; i++ ) {
|
|
|
|
if (static_functions[i].Offset == offset) {
|
|
|
|
return gl_string_table + static_functions[i].Name_offset;
|
2000-10-19 21:13:12 +01:00
|
|
|
}
|
|
|
|
}
|
|
|
|
return NULL;
|
2000-03-19 01:10:11 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/**********************************************************************
|
|
|
|
* Extension function management.
|
|
|
|
*/
|
|
|
|
|
2002-10-02 02:51:44 +01:00
|
|
|
/*
|
|
|
|
* Number of extension functions which we can dynamically add at runtime.
|
|
|
|
*/
|
|
|
|
#define MAX_EXTENSION_FUNCS 300
|
|
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
* The disptach table size (number of entries) is the sizeof the
|
|
|
|
* _glapi_table struct plus the number of dynamic entries we can add.
|
|
|
|
* The extra slots can be filled in by DRI drivers that register new extension
|
|
|
|
* functions.
|
|
|
|
*/
|
|
|
|
#define DISPATCH_TABLE_SIZE (sizeof(struct _glapi_table) / sizeof(void *) + MAX_EXTENSION_FUNCS)
|
2000-03-19 01:10:11 +00:00
|
|
|
|
|
|
|
|
|
|
|
static struct name_address_offset ExtEntryTable[MAX_EXTENSION_FUNCS];
|
|
|
|
static GLuint NumExtEntryPoints = 0;
|
|
|
|
|
2001-06-06 23:55:28 +01:00
|
|
|
#ifdef USE_SPARC_ASM
|
|
|
|
extern void __glapi_sparc_icache_flush(unsigned int *);
|
|
|
|
#endif
|
2000-03-19 01:10:11 +00:00
|
|
|
|
|
|
|
/*
|
|
|
|
* Generate a dispatch function (entrypoint) which jumps through
|
|
|
|
* the given slot number (offset) in the current dispatch table.
|
|
|
|
* We need assembly language in order to accomplish this.
|
|
|
|
*/
|
|
|
|
static void *
|
|
|
|
generate_entrypoint(GLuint functionOffset)
|
|
|
|
{
|
|
|
|
#if defined(USE_X86_ASM)
|
|
|
|
/*
|
|
|
|
* This x86 code contributed by Josh Vanderhoof.
|
|
|
|
*
|
|
|
|
* 0: a1 10 32 54 76 movl __glapi_Dispatch,%eax
|
|
|
|
* 00 01 02 03 04
|
|
|
|
* 5: 85 c0 testl %eax,%eax
|
|
|
|
* 05 06
|
|
|
|
* 7: 74 06 je f <entrypoint+0xf>
|
|
|
|
* 07 08
|
|
|
|
* 9: ff a0 10 32 54 76 jmp *0x76543210(%eax)
|
|
|
|
* 09 0a 0b 0c 0d 0e
|
|
|
|
* f: e8 fc ff ff ff call __glapi_get_dispatch
|
|
|
|
* 0f 10 11 12 13
|
|
|
|
* 14: ff a0 10 32 54 76 jmp *0x76543210(%eax)
|
|
|
|
* 14 15 16 17 18 19
|
|
|
|
*/
|
2002-10-02 02:51:44 +01:00
|
|
|
static const unsigned char insn_template[] = {
|
2000-03-19 01:10:11 +00:00
|
|
|
0xa1, 0x00, 0x00, 0x00, 0x00,
|
|
|
|
0x85, 0xc0,
|
|
|
|
0x74, 0x06,
|
|
|
|
0xff, 0xa0, 0x00, 0x00, 0x00, 0x00,
|
|
|
|
0xe8, 0x00, 0x00, 0x00, 0x00,
|
|
|
|
0xff, 0xa0, 0x00, 0x00, 0x00, 0x00
|
|
|
|
};
|
2002-10-29 15:03:14 +00:00
|
|
|
unsigned char *code = (unsigned char *) malloc(sizeof(insn_template));
|
2000-03-19 01:10:11 +00:00
|
|
|
unsigned int next_insn;
|
|
|
|
if (code) {
|
2002-10-02 02:51:44 +01:00
|
|
|
memcpy(code, insn_template, sizeof(insn_template));
|
2000-03-19 01:10:11 +00:00
|
|
|
|
2004-07-05 07:15:37 +01:00
|
|
|
#if defined( THREADS )
|
2004-06-29 20:08:20 +01:00
|
|
|
*(unsigned int *)(code + 0x01) = (unsigned int)&_glapi_DispatchTSD;
|
2004-07-05 07:15:37 +01:00
|
|
|
#else
|
|
|
|
*(unsigned int *)(code + 0x01) = (unsigned int)&_glapi_Dispatch;
|
|
|
|
#endif
|
2000-03-19 01:10:11 +00:00
|
|
|
*(unsigned int *)(code + 0x0b) = (unsigned int)functionOffset * 4;
|
|
|
|
next_insn = (unsigned int)(code + 0x14);
|
|
|
|
*(unsigned int *)(code + 0x10) = (unsigned int)_glapi_get_dispatch - next_insn;
|
|
|
|
*(unsigned int *)(code + 0x16) = (unsigned int)functionOffset * 4;
|
|
|
|
}
|
|
|
|
return code;
|
2001-06-06 00:54:00 +01:00
|
|
|
#elif defined(USE_SPARC_ASM)
|
|
|
|
|
2003-12-01 22:40:26 +00:00
|
|
|
#if defined(__sparc_v9__) && !defined(__linux__)
|
2001-06-06 00:54:00 +01:00
|
|
|
static const unsigned int insn_template[] = {
|
|
|
|
0x05000000, /* sethi %uhi(_glapi_Dispatch), %g2 */
|
|
|
|
0x03000000, /* sethi %hi(_glapi_Dispatch), %g1 */
|
|
|
|
0x8410a000, /* or %g2, %ulo(_glapi_Dispatch), %g2 */
|
|
|
|
0x82106000, /* or %g1, %lo(_glapi_Dispatch), %g1 */
|
|
|
|
0x8528b020, /* sllx %g2, 32, %g2 */
|
|
|
|
0xc2584002, /* ldx [%g1 + %g2], %g1 */
|
|
|
|
0x05000000, /* sethi %hi(8 * glapioffset), %g2 */
|
|
|
|
0x8410a000, /* or %g2, %lo(8 * glapioffset), %g2 */
|
|
|
|
0xc6584002, /* ldx [%g1 + %g2], %g3 */
|
|
|
|
0x81c0c000, /* jmpl %g3, %g0 */
|
|
|
|
0x01000000 /* nop */
|
|
|
|
};
|
|
|
|
#else
|
|
|
|
static const unsigned int insn_template[] = {
|
|
|
|
0x03000000, /* sethi %hi(_glapi_Dispatch), %g1 */
|
|
|
|
0xc2006000, /* ld [%g1 + %lo(_glapi_Dispatch)], %g1 */
|
|
|
|
0xc6006000, /* ld [%g1 + %lo(4*glapioffset)], %g3 */
|
|
|
|
0x81c0c000, /* jmpl %g3, %g0 */
|
|
|
|
0x01000000 /* nop */
|
|
|
|
};
|
|
|
|
#endif
|
2002-10-29 15:03:14 +00:00
|
|
|
unsigned int *code = (unsigned int *) malloc(sizeof(insn_template));
|
2001-06-06 00:54:00 +01:00
|
|
|
unsigned long glapi_addr = (unsigned long) &_glapi_Dispatch;
|
|
|
|
if (code) {
|
|
|
|
memcpy(code, insn_template, sizeof(insn_template));
|
|
|
|
|
2003-12-01 22:40:26 +00:00
|
|
|
#if defined(__sparc_v9__) && !defined(__linux__)
|
2001-06-06 00:54:00 +01:00
|
|
|
code[0] |= (glapi_addr >> (32 + 10));
|
|
|
|
code[1] |= ((glapi_addr & 0xffffffff) >> 10);
|
2001-06-06 23:55:28 +01:00
|
|
|
__glapi_sparc_icache_flush(&code[0]);
|
2001-06-06 00:54:00 +01:00
|
|
|
code[2] |= ((glapi_addr >> 32) & ((1 << 10) - 1));
|
|
|
|
code[3] |= (glapi_addr & ((1 << 10) - 1));
|
2001-06-06 23:55:28 +01:00
|
|
|
__glapi_sparc_icache_flush(&code[2]);
|
2001-06-06 00:54:00 +01:00
|
|
|
code[6] |= ((functionOffset * 8) >> 10);
|
|
|
|
code[7] |= ((functionOffset * 8) & ((1 << 10) - 1));
|
2001-06-06 23:55:28 +01:00
|
|
|
__glapi_sparc_icache_flush(&code[6]);
|
2001-06-06 00:54:00 +01:00
|
|
|
#else
|
|
|
|
code[0] |= (glapi_addr >> 10);
|
|
|
|
code[1] |= (glapi_addr & ((1 << 10) - 1));
|
2001-06-06 23:55:28 +01:00
|
|
|
__glapi_sparc_icache_flush(&code[0]);
|
2001-06-06 00:54:00 +01:00
|
|
|
code[2] |= (functionOffset * 4);
|
2001-06-06 23:55:28 +01:00
|
|
|
__glapi_sparc_icache_flush(&code[2]);
|
2001-06-06 00:54:00 +01:00
|
|
|
#endif
|
|
|
|
}
|
|
|
|
return code;
|
2000-03-19 01:10:11 +00:00
|
|
|
#else
|
|
|
|
return NULL;
|
2002-10-02 02:51:44 +01:00
|
|
|
#endif /* USE_*_ASM */
|
2000-03-19 01:10:11 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
|
2002-10-02 02:51:44 +01:00
|
|
|
/*
|
|
|
|
* This function inserts a new dispatch offset into the assembly language
|
|
|
|
* stub that was generated with the preceeding function.
|
|
|
|
*/
|
|
|
|
static void
|
|
|
|
fill_in_entrypoint_offset(void *entrypoint, GLuint offset)
|
|
|
|
{
|
|
|
|
#if defined(USE_X86_ASM)
|
|
|
|
|
|
|
|
unsigned char *code = (unsigned char *) entrypoint;
|
|
|
|
*(unsigned int *)(code + 0x0b) = offset * 4;
|
|
|
|
*(unsigned int *)(code + 0x16) = offset * 4;
|
|
|
|
|
|
|
|
#elif defined(USE_SPARC_ASM)
|
|
|
|
|
|
|
|
/* XXX this hasn't been tested! */
|
|
|
|
unsigned int *code = (unsigned int *) entrypoint;
|
2003-12-01 22:40:26 +00:00
|
|
|
#if defined(__sparc_v9__) && !defined(__linux__)
|
2002-10-02 02:51:44 +01:00
|
|
|
code[6] = 0x05000000; /* sethi %hi(8 * glapioffset), %g2 */
|
|
|
|
code[7] = 0x8410a000; /* or %g2, %lo(8 * glapioffset), %g2 */
|
|
|
|
code[6] |= ((offset * 8) >> 10);
|
|
|
|
code[7] |= ((offset * 8) & ((1 << 10) - 1));
|
|
|
|
__glapi_sparc_icache_flush(&code[6]);
|
2003-12-01 22:40:26 +00:00
|
|
|
#else /* __sparc_v9__ && !linux */
|
2002-10-02 02:51:44 +01:00
|
|
|
code[2] = 0xc6006000; /* ld [%g1 + %lo(4*glapioffset)], %g3 */
|
2002-10-17 17:29:17 +01:00
|
|
|
code[2] |= (offset * 4);
|
2002-10-02 02:51:44 +01:00
|
|
|
__glapi_sparc_icache_flush(&code[2]);
|
2003-12-01 22:40:26 +00:00
|
|
|
#endif /* __sparc_v9__ && !linux */
|
2002-10-02 02:51:44 +01:00
|
|
|
|
|
|
|
#endif /* USE_*_ASM */
|
|
|
|
}
|
|
|
|
|
2000-03-19 01:10:11 +00:00
|
|
|
|
|
|
|
/*
|
|
|
|
* Add a new extension function entrypoint.
|
|
|
|
* Return: GL_TRUE = success or GL_FALSE = failure
|
|
|
|
*/
|
|
|
|
GLboolean
|
|
|
|
_glapi_add_entrypoint(const char *funcName, GLuint offset)
|
|
|
|
{
|
2002-10-11 18:41:03 +01:00
|
|
|
/* trivial rejection test */
|
2004-04-23 21:33:07 +01:00
|
|
|
#ifdef MANGLE
|
|
|
|
if (!funcName || funcName[0] != 'm' || funcName[1] != 'g' || funcName[2] != 'l')
|
|
|
|
return NULL;
|
|
|
|
#else
|
2002-10-11 18:41:03 +01:00
|
|
|
if (!funcName || funcName[0] != 'g' || funcName[1] != 'l')
|
|
|
|
return GL_FALSE;
|
2004-04-23 21:33:07 +01:00
|
|
|
#endif
|
2002-10-11 18:41:03 +01:00
|
|
|
|
2000-03-19 01:10:11 +00:00
|
|
|
/* first check if the named function is already statically present */
|
|
|
|
{
|
|
|
|
GLint index = get_static_proc_offset(funcName);
|
|
|
|
if (index >= 0) {
|
2001-03-07 05:06:11 +00:00
|
|
|
return (GLboolean) ((GLuint) index == offset); /* bad offset! */
|
2000-03-19 01:10:11 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2002-10-02 02:51:44 +01:00
|
|
|
/* See if this function has already been dynamically added */
|
2000-03-19 01:10:11 +00:00
|
|
|
{
|
|
|
|
GLuint i;
|
|
|
|
for (i = 0; i < NumExtEntryPoints; i++) {
|
|
|
|
if (strcmp(ExtEntryTable[i].Name, funcName) == 0) {
|
2002-10-02 02:51:44 +01:00
|
|
|
/* function already registered */
|
2000-03-19 01:10:11 +00:00
|
|
|
if (ExtEntryTable[i].Offset == offset) {
|
|
|
|
return GL_TRUE; /* offsets match */
|
|
|
|
}
|
2003-09-19 16:38:15 +01:00
|
|
|
else if (ExtEntryTable[i].Offset == (GLuint) ~0
|
2002-10-02 02:51:44 +01:00
|
|
|
&& offset < DISPATCH_TABLE_SIZE) {
|
|
|
|
/* need to patch-up the dispatch code */
|
2003-09-19 16:38:15 +01:00
|
|
|
if (offset != (GLuint) ~0) {
|
2002-10-02 02:51:44 +01:00
|
|
|
fill_in_entrypoint_offset(ExtEntryTable[i].Address, offset);
|
|
|
|
ExtEntryTable[i].Offset = offset;
|
|
|
|
}
|
|
|
|
return GL_TRUE;
|
|
|
|
}
|
2000-03-19 01:10:11 +00:00
|
|
|
else {
|
|
|
|
return GL_FALSE; /* bad offset! */
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
2002-10-11 18:41:03 +01:00
|
|
|
}
|
2000-03-19 01:10:11 +00:00
|
|
|
|
2002-10-11 18:41:03 +01:00
|
|
|
/* This is a new function, try to add it. */
|
|
|
|
if (NumExtEntryPoints >= MAX_EXTENSION_FUNCS ||
|
|
|
|
offset >= DISPATCH_TABLE_SIZE) {
|
|
|
|
/* No space left */
|
|
|
|
return GL_FALSE;
|
|
|
|
}
|
|
|
|
else {
|
|
|
|
void *entrypoint = generate_entrypoint(offset);
|
|
|
|
if (!entrypoint)
|
|
|
|
return GL_FALSE; /* couldn't generate assembly */
|
2000-03-19 01:10:11 +00:00
|
|
|
|
2002-10-11 18:41:03 +01:00
|
|
|
/* OK! */
|
|
|
|
ExtEntryTable[NumExtEntryPoints].Name = str_dup(funcName);
|
|
|
|
ExtEntryTable[NumExtEntryPoints].Offset = offset;
|
|
|
|
ExtEntryTable[NumExtEntryPoints].Address = entrypoint;
|
|
|
|
NumExtEntryPoints++;
|
2000-03-19 01:10:11 +00:00
|
|
|
|
2002-10-11 18:41:03 +01:00
|
|
|
return GL_TRUE; /* success */
|
2000-03-19 01:10:11 +00:00
|
|
|
}
|
|
|
|
|
2002-10-11 18:41:03 +01:00
|
|
|
/* should never get here, silence compiler warnings */
|
2000-03-19 01:10:11 +00:00
|
|
|
return GL_FALSE;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Return offset of entrypoint for named function within dispatch table.
|
|
|
|
*/
|
|
|
|
GLint
|
|
|
|
_glapi_get_proc_offset(const char *funcName)
|
|
|
|
{
|
|
|
|
/* search extension functions first */
|
2001-03-07 05:06:11 +00:00
|
|
|
GLuint i;
|
2000-03-19 01:10:11 +00:00
|
|
|
for (i = 0; i < NumExtEntryPoints; i++) {
|
|
|
|
if (strcmp(ExtEntryTable[i].Name, funcName) == 0) {
|
|
|
|
return ExtEntryTable[i].Offset;
|
|
|
|
}
|
|
|
|
}
|
2000-02-24 22:14:04 +00:00
|
|
|
|
2000-03-19 01:10:11 +00:00
|
|
|
/* search static functions */
|
|
|
|
return get_static_proc_offset(funcName);
|
|
|
|
}
|
2000-02-24 22:14:04 +00:00
|
|
|
|
1999-12-15 12:52:31 +00:00
|
|
|
|
1999-11-27 21:30:40 +00:00
|
|
|
|
2000-03-19 01:10:11 +00:00
|
|
|
/*
|
|
|
|
* Return entrypoint for named function.
|
|
|
|
*/
|
|
|
|
const GLvoid *
|
|
|
|
_glapi_get_proc_address(const char *funcName)
|
|
|
|
{
|
2001-03-07 05:06:11 +00:00
|
|
|
GLuint i;
|
2003-08-27 15:48:16 +01:00
|
|
|
|
2004-04-23 21:33:07 +01:00
|
|
|
#ifdef MANGLE
|
|
|
|
if (funcName[0] != 'm' || funcName[1] != 'g' || funcName[2] != 'l')
|
|
|
|
return NULL;
|
|
|
|
#else
|
2003-08-27 15:48:16 +01:00
|
|
|
if (funcName[0] != 'g' || funcName[1] != 'l')
|
|
|
|
return NULL;
|
2004-04-23 21:33:07 +01:00
|
|
|
#endif
|
2003-08-27 15:48:16 +01:00
|
|
|
|
|
|
|
/* search extension functions first */
|
2000-03-19 01:10:11 +00:00
|
|
|
for (i = 0; i < NumExtEntryPoints; i++) {
|
|
|
|
if (strcmp(ExtEntryTable[i].Name, funcName) == 0) {
|
|
|
|
return ExtEntryTable[i].Address;
|
|
|
|
}
|
|
|
|
}
|
1999-11-27 21:30:40 +00:00
|
|
|
|
2000-03-19 01:10:11 +00:00
|
|
|
/* search static functions */
|
2002-10-02 02:51:44 +01:00
|
|
|
{
|
|
|
|
const GLvoid *func = get_static_proc_address(funcName);
|
|
|
|
if (func)
|
|
|
|
return func;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* generate new entrypoint - use a temporary dispatch offset of
|
|
|
|
* ~0 (i.e. -1). Later, when the driver calls _glapi_add_entrypoint()
|
|
|
|
* 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.
|
|
|
|
*/
|
|
|
|
if (NumExtEntryPoints < MAX_EXTENSION_FUNCS) {
|
|
|
|
GLvoid *entrypoint = generate_entrypoint(~0);
|
|
|
|
if (!entrypoint)
|
|
|
|
return GL_FALSE;
|
|
|
|
|
|
|
|
ExtEntryTable[NumExtEntryPoints].Name = str_dup(funcName);
|
|
|
|
ExtEntryTable[NumExtEntryPoints].Offset = ~0;
|
|
|
|
ExtEntryTable[NumExtEntryPoints].Address = entrypoint;
|
|
|
|
NumExtEntryPoints++;
|
2000-02-24 22:14:04 +00:00
|
|
|
|
2002-10-02 02:51:44 +01:00
|
|
|
return entrypoint;
|
|
|
|
}
|
|
|
|
else {
|
|
|
|
/* no space for new functions! */
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
}
|
2000-02-24 22:14:04 +00:00
|
|
|
|
1999-11-11 01:22:25 +00:00
|
|
|
|
2000-03-19 01:10:11 +00:00
|
|
|
|
|
|
|
/*
|
|
|
|
* Return the name of the function at the given dispatch offset.
|
|
|
|
* This is only intended for debugging.
|
|
|
|
*/
|
|
|
|
const char *
|
|
|
|
_glapi_get_proc_name(GLuint offset)
|
|
|
|
{
|
|
|
|
GLuint i;
|
2004-05-27 01:05:13 +01:00
|
|
|
const char * n;
|
2002-10-02 02:51:44 +01:00
|
|
|
|
|
|
|
/* search built-in functions */
|
2004-05-27 01:05:13 +01:00
|
|
|
n = get_static_proc_name(offset);
|
|
|
|
if ( n != NULL ) {
|
|
|
|
return n;
|
2000-03-19 01:10:11 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/* search added extension functions */
|
|
|
|
for (i = 0; i < NumExtEntryPoints; i++) {
|
|
|
|
if (ExtEntryTable[i].Offset == offset) {
|
|
|
|
return ExtEntryTable[i].Name;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
2002-10-02 02:51:44 +01:00
|
|
|
/*
|
|
|
|
* Return size of dispatch table struct as number of functions (or
|
|
|
|
* slots).
|
|
|
|
*/
|
|
|
|
GLuint
|
|
|
|
_glapi_get_dispatch_table_size(void)
|
|
|
|
{
|
|
|
|
return DISPATCH_TABLE_SIZE;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Get API dispatcher version string.
|
|
|
|
*/
|
|
|
|
const char *
|
|
|
|
_glapi_get_version(void)
|
|
|
|
{
|
|
|
|
return "20021001"; /* YYYYMMDD */
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
2000-03-19 01:10:11 +00:00
|
|
|
/*
|
|
|
|
* Make sure there are no NULL pointers in the given dispatch table.
|
2002-03-07 21:50:41 +00:00
|
|
|
* Intended for debugging purposes.
|
2000-03-19 01:10:11 +00:00
|
|
|
*/
|
|
|
|
void
|
|
|
|
_glapi_check_table(const struct _glapi_table *table)
|
|
|
|
{
|
2002-03-07 21:50:41 +00:00
|
|
|
#ifdef DEBUG
|
2000-03-19 01:10:11 +00:00
|
|
|
const GLuint entries = _glapi_get_dispatch_table_size();
|
|
|
|
const void **tab = (const void **) table;
|
|
|
|
GLuint i;
|
|
|
|
for (i = 1; i < entries; i++) {
|
|
|
|
assert(tab[i]);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Do some spot checks to be sure that the dispatch table
|
|
|
|
* slots are assigned correctly.
|
|
|
|
*/
|
|
|
|
{
|
|
|
|
GLuint BeginOffset = _glapi_get_proc_offset("glBegin");
|
|
|
|
char *BeginFunc = (char*) &table->Begin;
|
|
|
|
GLuint offset = (BeginFunc - (char *) table) / sizeof(void *);
|
|
|
|
assert(BeginOffset == _gloffset_Begin);
|
|
|
|
assert(BeginOffset == offset);
|
|
|
|
}
|
|
|
|
{
|
|
|
|
GLuint viewportOffset = _glapi_get_proc_offset("glViewport");
|
|
|
|
char *viewportFunc = (char*) &table->Viewport;
|
|
|
|
GLuint offset = (viewportFunc - (char *) table) / sizeof(void *);
|
|
|
|
assert(viewportOffset == _gloffset_Viewport);
|
|
|
|
assert(viewportOffset == offset);
|
|
|
|
}
|
|
|
|
{
|
|
|
|
GLuint VertexPointerOffset = _glapi_get_proc_offset("glVertexPointer");
|
|
|
|
char *VertexPointerFunc = (char*) &table->VertexPointer;
|
|
|
|
GLuint offset = (VertexPointerFunc - (char *) table) / sizeof(void *);
|
|
|
|
assert(VertexPointerOffset == _gloffset_VertexPointer);
|
|
|
|
assert(VertexPointerOffset == offset);
|
|
|
|
}
|
|
|
|
{
|
|
|
|
GLuint ResetMinMaxOffset = _glapi_get_proc_offset("glResetMinmax");
|
|
|
|
char *ResetMinMaxFunc = (char*) &table->ResetMinmax;
|
|
|
|
GLuint offset = (ResetMinMaxFunc - (char *) table) / sizeof(void *);
|
|
|
|
assert(ResetMinMaxOffset == _gloffset_ResetMinmax);
|
|
|
|
assert(ResetMinMaxOffset == offset);
|
|
|
|
}
|
|
|
|
{
|
|
|
|
GLuint blendColorOffset = _glapi_get_proc_offset("glBlendColor");
|
|
|
|
char *blendColorFunc = (char*) &table->BlendColor;
|
|
|
|
GLuint offset = (blendColorFunc - (char *) table) / sizeof(void *);
|
|
|
|
assert(blendColorOffset == _gloffset_BlendColor);
|
|
|
|
assert(blendColorOffset == offset);
|
|
|
|
}
|
|
|
|
{
|
|
|
|
GLuint istextureOffset = _glapi_get_proc_offset("glIsTextureEXT");
|
|
|
|
char *istextureFunc = (char*) &table->IsTextureEXT;
|
|
|
|
GLuint offset = (istextureFunc - (char *) table) / sizeof(void *);
|
|
|
|
assert(istextureOffset == _gloffset_IsTextureEXT);
|
|
|
|
assert(istextureOffset == offset);
|
|
|
|
}
|
2000-10-27 19:31:21 +01:00
|
|
|
{
|
|
|
|
GLuint secondaryColor3fOffset = _glapi_get_proc_offset("glSecondaryColor3fEXT");
|
|
|
|
char *secondaryColor3fFunc = (char*) &table->SecondaryColor3fEXT;
|
|
|
|
GLuint offset = (secondaryColor3fFunc - (char *) table) / sizeof(void *);
|
|
|
|
assert(secondaryColor3fOffset == _gloffset_SecondaryColor3fEXT);
|
|
|
|
assert(secondaryColor3fOffset == offset);
|
|
|
|
assert(_glapi_get_proc_address("glSecondaryColor3fEXT") == (void *) &glSecondaryColor3fEXT);
|
|
|
|
}
|
2002-05-29 16:23:16 +01:00
|
|
|
{
|
|
|
|
GLuint pointParameterivOffset = _glapi_get_proc_offset("glPointParameterivNV");
|
|
|
|
char *pointParameterivFunc = (char*) &table->PointParameterivNV;
|
|
|
|
GLuint offset = (pointParameterivFunc - (char *) table) / sizeof(void *);
|
|
|
|
assert(pointParameterivOffset == _gloffset_PointParameterivNV);
|
|
|
|
assert(pointParameterivOffset == offset);
|
|
|
|
assert(_glapi_get_proc_address("glPointParameterivNV") == (void *) &glPointParameterivNV);
|
|
|
|
}
|
2002-10-02 02:51:44 +01:00
|
|
|
{
|
|
|
|
GLuint setFenceOffset = _glapi_get_proc_offset("glSetFenceNV");
|
|
|
|
char *setFenceFunc = (char*) &table->SetFenceNV;
|
|
|
|
GLuint offset = (setFenceFunc - (char *) table) / sizeof(void *);
|
|
|
|
assert(setFenceOffset == _gloffset_SetFenceNV);
|
|
|
|
assert(setFenceOffset == offset);
|
|
|
|
assert(_glapi_get_proc_address("glSetFenceNV") == (void *) &glSetFenceNV);
|
|
|
|
}
|
2000-01-07 07:30:13 +00:00
|
|
|
#endif
|
2000-03-19 01:10:11 +00:00
|
|
|
}
|