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  1. /**************************************************************************
  2.  *
  3.  * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
  4.  * Copyright 2009-2010 Chia-I Wu <olvaffe@gmail.com>
  5.  * Copyright 2010-2011 LunarG, Inc.
  6.  * All Rights Reserved.
  7.  *
  8.  * Permission is hereby granted, free of charge, to any person obtaining a
  9.  * copy of this software and associated documentation files (the
  10.  * "Software"), to deal in the Software without restriction, including
  11.  * without limitation the rights to use, copy, modify, merge, publish,
  12.  * distribute, sub license, and/or sell copies of the Software, and to
  13.  * permit persons to whom the Software is furnished to do so, subject to
  14.  * the following conditions:
  15.  *
  16.  * The above copyright notice and this permission notice (including the
  17.  * next paragraph) shall be included in all copies or substantial portions
  18.  * of the Software.
  19.  *
  20.  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  21.  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  22.  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  23.  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  24.  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  25.  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  26.  * DEALINGS IN THE SOFTWARE.
  27.  *
  28.  **************************************************************************/
  29.  
  30.  
  31. #ifndef EGLDRIVER_INCLUDED
  32. #define EGLDRIVER_INCLUDED
  33.  
  34.  
  35. #include "egltypedefs.h"
  36. #include "eglapi.h"
  37. #include <stddef.h>
  38.  
  39. /**
  40.  * Define an inline driver typecast function.
  41.  *
  42.  * Note that this macro defines a function and should not be ended with a
  43.  * semicolon when used.
  44.  */
  45. #define _EGL_DRIVER_TYPECAST(drvtype, egltype, code)           \
  46.    static INLINE struct drvtype *drvtype(const egltype *obj)   \
  47.    { return (struct drvtype *) code; }
  48.  
  49.  
  50. /**
  51.  * Define the driver typecast functions for _EGLDriver, _EGLDisplay,
  52.  * _EGLContext, _EGLSurface, and _EGLConfig.
  53.  *
  54.  * Note that this macro defines several functions and should not be ended with
  55.  * a semicolon when used.
  56.  */
  57. #define _EGL_DRIVER_STANDARD_TYPECASTS(drvname)                            \
  58.    _EGL_DRIVER_TYPECAST(drvname ## _driver, _EGLDriver, obj)               \
  59.    /* note that this is not a direct cast */                               \
  60.    _EGL_DRIVER_TYPECAST(drvname ## _display, _EGLDisplay, obj->DriverData) \
  61.    _EGL_DRIVER_TYPECAST(drvname ## _context, _EGLContext, obj)             \
  62.    _EGL_DRIVER_TYPECAST(drvname ## _surface, _EGLSurface, obj)             \
  63.    _EGL_DRIVER_TYPECAST(drvname ## _config, _EGLConfig, obj)
  64.  
  65.  
  66. typedef _EGLDriver *(*_EGLMain_t)(const char *args);
  67.  
  68.  
  69. /**
  70.  * Base class for device drivers.
  71.  */
  72. struct _egl_driver
  73. {
  74.    const char *Name;  /**< name of this driver */
  75.  
  76.    /**
  77.     * Release the driver resource.
  78.     *
  79.     * It is called before dlclose().
  80.     */
  81.    void (*Unload)(_EGLDriver *drv);
  82.  
  83.    _EGLAPI API;  /**< EGL API dispatch table */
  84. };
  85.  
  86.  
  87. extern _EGLDriver *
  88. _eglBuiltInDriverGALLIUM(const char *args);
  89.  
  90.  
  91. extern _EGLDriver *
  92. _eglBuiltInDriverDRI2(const char *args);
  93.  
  94.  
  95. extern _EGLDriver *
  96. _eglBuiltInDriverGLX(const char *args);
  97.  
  98.  
  99. PUBLIC _EGLDriver *
  100. _eglMain(const char *args);
  101.  
  102.  
  103. extern _EGLDriver *
  104. _eglMatchDriver(_EGLDisplay *dpy, EGLBoolean test_only);
  105.  
  106.  
  107. extern __eglMustCastToProperFunctionPointerType
  108. _eglGetDriverProc(const char *procname);
  109.  
  110.  
  111. extern void
  112. _eglUnloadDrivers(void);
  113.  
  114.  
  115. /* defined in eglfallbacks.c */
  116. PUBLIC void
  117. _eglInitDriverFallbacks(_EGLDriver *drv);
  118.  
  119.  
  120. PUBLIC void
  121. _eglSearchPathForEach(EGLBoolean (*callback)(const char *, size_t, void *),
  122.                       void *callback_data);
  123.  
  124.  
  125. #endif /* EGLDRIVER_INCLUDED */
  126.