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Diffstat (limited to 'src/mesa/glapi/glapi.h')
-rw-r--r-- | src/mesa/glapi/glapi.h | 152 |
1 files changed, 152 insertions, 0 deletions
diff --git a/src/mesa/glapi/glapi.h b/src/mesa/glapi/glapi.h new file mode 100644 index 00000000000..80ce2c324d2 --- /dev/null +++ b/src/mesa/glapi/glapi.h @@ -0,0 +1,152 @@ +/* + * Mesa 3-D graphics library + * Version: 6.3 + * + * Copyright (C) 1999-2004 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 + * BRIAN PAUL 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 "GL/gl.h" +#include "glapitable.h" + +typedef void (*_glapi_warning_func)(void *ctx, const char *str, ...); + + +#if defined (GLX_USE_TLS) + +const extern void *_glapi_Context; +const extern struct _glapi_table *_glapi_Dispatch; + +extern __thread void * _glapi_tls_Context + __attribute__((tls_model("initial-exec"))); + +# define GET_CURRENT_CONTEXT(C) GLcontext *C = (GLcontext *) _glapi_tls_Context + +#else + +extern void *_glapi_Context; +extern struct _glapi_table *_glapi_Dispatch; + +/** + * Macro for declaration and fetching the current context. + * + * \param C local variable which will hold the current context. + * + * It should be used in the variable declaration area of a function: + * \code + * ... + * { + * GET_CURRENT_CONTEXT(ctx); + * ... + * \endcode + */ +# ifdef THREADS +# define GET_CURRENT_CONTEXT(C) GLcontext *C = (GLcontext *) (_glapi_Context ? _glapi_Context : _glapi_get_context()) +# else +# define GET_CURRENT_CONTEXT(C) GLcontext *C = (GLcontext *) _glapi_Context +# endif + +#endif /* defined (GLX_USE_TLS) */ + +extern void +_glapi_noop_enable_warnings(GLboolean enable); + +extern void +_glapi_set_warning_func(_glapi_warning_func func); + +extern void +_glapi_check_multithread(void); + + +extern void +_glapi_set_context(void *context); + + +extern void * +_glapi_get_context(void); + + +extern void +_glapi_set_dispatch(struct _glapi_table *dispatch); + + +extern struct _glapi_table * +_glapi_get_dispatch(void); + + +extern int +_glapi_begin_dispatch_override(struct _glapi_table *override); + + +extern void +_glapi_end_dispatch_override(int layer); + + +struct _glapi_table * +_glapi_get_override_dispatch(int layer); + + +extern GLuint +_glapi_get_dispatch_table_size(void); + + +extern void +_glapi_check_table(const struct _glapi_table *table); + + +extern int +_glapi_add_dispatch( const char * const * function_names, + const char * parameter_signature ); + +extern GLint +_glapi_get_proc_offset(const char *funcName); + + +extern _glapi_proc +_glapi_get_proc_address(const char *funcName); + + +extern const char * +_glapi_get_proc_name(GLuint offset); + + +#endif |