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Diffstat (limited to 'xorg-server/glx/glapi.h')
-rw-r--r-- | xorg-server/glx/glapi.h | 190 |
1 files changed, 190 insertions, 0 deletions
diff --git a/xorg-server/glx/glapi.h b/xorg-server/glx/glapi.h new file mode 100644 index 000000000..b10f19a63 --- /dev/null +++ b/xorg-server/glx/glapi.h @@ -0,0 +1,190 @@ +/* + * Mesa 3-D graphics library + * + * Copyright (C) 1999-2008 Brian Paul All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included + * in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR + * OTHER DEALINGS IN THE SOFTWARE. + */ + + +/** + * \mainpage Mesa GL API Module + * + * \section GLAPIIntroduction Introduction + * + * The Mesa GL API module is responsible for dispatching all the + * gl*() functions. All GL functions are dispatched by jumping through + * the current dispatch table (basically a struct full of function + * pointers.) + * + * A per-thread current dispatch table and per-thread current context + * pointer are managed by this module too. + * + * This module is intended to be non-Mesa-specific so it can be used + * with the X/DRI libGL also. + */ + + +#ifndef _GLAPI_H +#define _GLAPI_H + +#include "glthread.h" + + +#ifdef __cplusplus +extern "C" { +#endif + +#ifdef _GLAPI_NO_EXPORTS +# define _GLAPI_EXPORT +#else /* _GLAPI_NO_EXPORTS */ +# ifdef _WIN32 +# ifdef _GLAPI_DLL_EXPORTS +# define _GLAPI_EXPORT __declspec(dllexport) +# else +# define _GLAPI_EXPORT __declspec(dllimport) +# endif +# elif defined(__GNUC__) || (defined(__SUNPRO_C) && (__SUNPRO_C >= 0x590)) +# define _GLAPI_EXPORT __attribute__((visibility("default"))) +# else +# define _GLAPI_EXPORT +# endif +#endif /* _GLAPI_NO_EXPORTS */ + +#include "GL/gl.h" +#include "GL/glext.h" +#include "glthread.h" + + +struct _glapi_table; + +typedef void (*_glapi_proc)(void); /* generic function pointer */ + +typedef void (*_glapi_warning_func)(void *ctx, const char *str, ...); + + +#if defined(USE_MGL_NAMESPACE) +#define _glapi_set_dispatch _mglapi_set_dispatch +#define _glapi_get_dispatch _mglapi_get_dispatch +#define _glapi_set_context _mglapi_set_context +#define _glapi_get_context _mglapi_get_context +#define _glapi_Context _mglapi_Context +#define _glapi_Dispatch _mglapi_Dispatch +#endif + +/* + * Number of extension functions which we can dynamically add at runtime. + */ +#define MAX_EXTENSION_FUNCS 300 + + +/** + ** Define the GET_CURRENT_CONTEXT() macro. + ** \param C local variable which will hold the current context. + **/ +#if defined (GLX_USE_TLS) + +_GLAPI_EXPORT extern __thread struct _glapi_table * _glapi_tls_Dispatch; + +_GLAPI_EXPORT extern const void *_glapi_Context; +_GLAPI_EXPORT extern const struct _glapi_table *_glapi_Dispatch; + +_GLAPI_EXPORT extern __thread void * _glapi_tls_Context; + +# define GET_DISPATCH() _glapi_tls_Dispatch +# define GET_CURRENT_CONTEXT(C) struct gl_context *C = (struct gl_context *) _glapi_tls_Context + +#else + +#ifdef INSERVER +#define SERVEXTERN _declspec(dllimport) +#else +#define SERVEXTERN _declspec(dllexport) +#endif + +SERVEXTERN void *_glapi_Context; +SERVEXTERN struct _glapi_table *_glapi_Dispatch; + +# ifdef THREADS + +# define GET_DISPATCH() \ + (likely(_glapi_Dispatch) ? _glapi_Dispatch : _glapi_get_dispatch()) + + +# define GET_CURRENT_CONTEXT(C) struct gl_context *C = (struct gl_context *) \ + (likely(_glapi_Context) ? _glapi_Context : _glapi_get_context()) +# else +# define GET_DISPATCH() _glapi_Dispatch +# define GET_CURRENT_CONTEXT(C) struct gl_context *C = (struct gl_context *) _glapi_Context +# endif + +#endif /* defined (GLX_USE_TLS) */ + + +/** + ** GL API public functions + **/ + +SERVEXTERN void +_glapi_check_multithread(void); + + +SERVEXTERN void +_glapi_set_context(void *context); + + +SERVEXTERN void * +_glapi_get_context(void); + + +SERVEXTERN void +_glapi_set_dispatch(struct _glapi_table *dispatch); + + +SERVEXTERN struct _glapi_table * +_glapi_get_dispatch(void); + +SERVEXTERN int +_glapi_begin_dispatch_override(struct _glapi_table *override); + +SERVEXTERN void +_glapi_end_dispatch_override(int layer); + +struct _glapi_table * +_glapi_get_override_dispatch(int layer); + +SERVEXTERN GLuint +_glapi_get_dispatch_table_size(void); + + +SERVEXTERN int +_glapi_add_dispatch( const char * const * function_names, + const char * parameter_signature ); + +_GLAPI_EXPORT _glapi_proc +_glapi_get_proc_address(const char *funcName); + +extern struct _glapi_table * +_glapi_create_table_from_handle(void *handle, const char *symbol_prefix); + +#endif + +#ifdef __cplusplus +} +#endif |