1585c234e0
_glapi_add_entrypoint has been replaced by a new routine called _glapi_add_dispatch. This new routine dynamically assignes dispatch offsets to functions added. This allows IHVs to add support for extension functions that do not have assigned dispatch offsets. It also means that a driver has no idea what offset will be assigned to a function. The vast majority of the changes in this commit account for that. An additional table, driDispatchRemapTable, is added. Functions not in the Linux OpenGL ABI (i.e., anything not in GL 1.2 + ARB_multitexture) has a fixed offset in this new table. The entry in this table specifies the offset in of the function in the real dispatch table. The internal interface was also bumped from version 20050725 to 20050727. This has been tested with various programs in progs/demos on: radeon (Radeon Mobility M6) r128 (Rage 128 Pro) mga (G400)
157 lines
3.7 KiB
C
157 lines
3.7 KiB
C
/*
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* Mesa 3-D graphics library
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* Version: 6.3
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*
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* Copyright (C) 1999-2004 Brian Paul All Rights Reserved.
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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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/**
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* \mainpage Mesa GL API Module
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*
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* \section GLAPIIntroduction Introduction
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*
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* The Mesa GL API module is responsible for dispatching all the
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* gl*() functions. All GL functions are dispatched by jumping through
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* the current dispatch table (basically a struct full of function
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* pointers.)
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*
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* A per-thread current dispatch table and per-thread current context
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* pointer are managed by this module too.
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*
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* This module is intended to be non-Mesa-specific so it can be used
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* with the X/DRI libGL also.
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*/
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#ifndef _GLAPI_H
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#define _GLAPI_H
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#include "GL/gl.h"
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#include "glapitable.h"
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typedef void (*_glapi_warning_func)(void *ctx, const char *str, ...);
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#if defined (GLX_USE_TLS)
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const extern void *_glapi_Context;
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const extern struct _glapi_table *_glapi_Dispatch;
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extern __thread void * _glapi_tls_Context
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__attribute__((tls_model("initial-exec")));
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# define GET_CURRENT_CONTEXT(C) GLcontext *C = (GLcontext *) _glapi_tls_Context
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#else
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extern void *_glapi_Context;
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extern struct _glapi_table *_glapi_Dispatch;
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/**
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* Macro for declaration and fetching the current context.
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*
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* \param C local variable which will hold the current context.
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*
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* It should be used in the variable declaration area of a function:
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* \code
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* ...
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* {
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* GET_CURRENT_CONTEXT(ctx);
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* ...
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* \endcode
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*/
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# ifdef THREADS
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# define GET_CURRENT_CONTEXT(C) GLcontext *C = (GLcontext *) (_glapi_Context ? _glapi_Context : _glapi_get_context())
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# else
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# define GET_CURRENT_CONTEXT(C) GLcontext *C = (GLcontext *) _glapi_Context
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# endif
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#endif /* defined (GLX_USE_TLS) */
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extern void
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_glapi_noop_enable_warnings(GLboolean enable);
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extern void
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_glapi_set_warning_func(_glapi_warning_func func);
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extern void
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_glapi_check_multithread(void);
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extern void
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_glapi_set_context(void *context);
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extern void *
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_glapi_get_context(void);
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extern void
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_glapi_set_dispatch(struct _glapi_table *dispatch);
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extern struct _glapi_table *
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_glapi_get_dispatch(void);
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extern int
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_glapi_begin_dispatch_override(struct _glapi_table *override);
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extern void
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_glapi_end_dispatch_override(int layer);
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struct _glapi_table *
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_glapi_get_override_dispatch(int layer);
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extern GLuint
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_glapi_get_dispatch_table_size(void);
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extern const char *
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_glapi_get_version(void);
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extern void
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_glapi_check_table(const struct _glapi_table *table);
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extern int
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_glapi_add_dispatch( const char * const * function_names,
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const char * parameter_signature );
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extern GLint
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_glapi_get_proc_offset(const char *funcName);
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extern _glapi_proc
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_glapi_get_proc_address(const char *funcName);
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extern const char *
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_glapi_get_proc_name(GLuint offset);
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#endif
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