d84d71029a
Signed-off-by: Eric Anholt <eric@anholt.net> Reviewed-by: Zhigang Gong <zhigang.gong@linux.intel.com> Reviewed-by: Keith Packard <keithp@keithp.com>
117 lines
3.5 KiB
C
117 lines
3.5 KiB
C
/*
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* Mesa 3-D graphics library
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* Version: 7.1
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*
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* Copyright (C) 1999-2008 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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#define GL_GLEXT_PROTOTYPES
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#if GLAMOR_GLES2
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#include <GLES2/gl2.h>
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#include <GLES2/gl2ext.h>
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#else
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#include <GL/gl.h>
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#include "GL/glext.h"
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#endif
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/* Is this needed? It is incomplete anyway. */
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#ifdef USE_MGL_NAMESPACE
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#define _glapi_set_dispatch _mglapi_set_dispatch
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#define _glapi_get_dispatch _mglapi_get_dispatch
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#define _glapi_set_context _mglapi_set_context
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#define _glapi_get_context _mglapi_get_context
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#define _glapi_Dispatch _mglapi_Dispatch
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#define _glapi_Context _mglapi_Context
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#endif
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typedef void (*_glapi_proc) (void);
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struct _glapi_table;
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#if defined (GLX_USE_TLS)
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extern __thread struct _glapi_table *_glapi_tls_Dispatch
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__attribute__ ((tls_model("initial-exec")));
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extern __thread void *_glapi_tls_Context
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__attribute__ ((tls_model("initial-exec")));
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extern const struct _glapi_table *_glapi_Dispatch;
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extern const void *_glapi_Context;
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#define GET_DISPATCH() _glapi_tls_Dispatch
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#define GET_CURRENT_CONTEXT(C) C = (typeof(C)) _glapi_tls_Context
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#define SET_CURRENT_CONTEXT(C) _glapi_tls_Context = (void*)C
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#else
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extern struct _glapi_table *_glapi_Dispatch;
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extern void *_glapi_Context;
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#ifdef THREADS
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#define GET_DISPATCH() \
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(likely(_glapi_Dispatch) ? _glapi_Dispatch : _glapi_get_dispatch())
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#define GET_CURRENT_CONTEXT(C) C = (typeof(C)) \
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(likely(_glapi_Context) ? _glapi_Context : _glapi_get_context())
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#define SET_CURRENT_CONTEXT(C) do { if (likely(_glapi_Context)) \
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_glapi_Context = (void*)C; \
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else \
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_glapi_set_context(C); } while(0)
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#else
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#define GET_DISPATCH() _glapi_Dispatch
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#define GET_CURRENT_CONTEXT(C) C = (typeof(C)) _glapi_Context
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#define SET_CURRENT_CONTEXT(C) _glapi_Context = (void*)C
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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_set_context(void *context);
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extern void *_glapi_get_context(void);
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#endif
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