src/egl/main/eglcurrent.h

   1 /**************************************************************************
   2  *
   3  * Copyright 2009-2010 Chia-I Wu <olvaffe@gmail.com>
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  19  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  20  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  21  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  22  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  23  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  24  * DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28
  29 #ifndef EGLCURRENT_INCLUDED
  30 #define EGLCURRENT_INCLUDED
  31
  32 #include "c99_compat.h"
  33
  34 #include "egltypedefs.h"
  35
  36
  37 #define _EGL_API_ALL_BITS \
  38    (EGL_OPENGL_ES_BIT   | \
  39     EGL_OPENVG_BIT      | \
  40     EGL_OPENGL_ES2_BIT  | \
  41     EGL_OPENGL_ES3_BIT_KHR | \
  42     EGL_OPENGL_BIT)
  43
  44
  45 #define _EGL_API_FIRST_API EGL_OPENGL_ES_API
  46 #define _EGL_API_LAST_API EGL_OPENGL_API
  47 #define _EGL_API_NUM_APIS (_EGL_API_LAST_API - _EGL_API_FIRST_API + 1)
  48
  49
  50 /**
  51  * Per-thread info
  52  */
  53 struct _egl_thread_info
  54 {
  55    EGLint LastError;
  56    _EGLContext *CurrentContexts[_EGL_API_NUM_APIS];
  57    /* use index for fast access to current context */
  58    EGLint CurrentAPIIndex;
  59 };
  60
  61
  62 /**
  63  * Return true if a client API enum is recognized.
  64  */
  65 static inline EGLBoolean
  66 _eglIsApiValid(EGLenum api)
  67 {
  68    return (api >= _EGL_API_FIRST_API && api <= _EGL_API_LAST_API);
  69 }
  70
  71
  72 /**
  73  * Convert a client API enum to an index, for use by thread info.
  74  * The client API enum is assumed to be valid.
  75  */
  76 static inline EGLint
  77 _eglConvertApiToIndex(EGLenum api)
  78 {
  79    return api - _EGL_API_FIRST_API;
  80 }
  81
  82
  83 /**
  84  * Convert an index, used by thread info, to a client API enum.
  85  * The index is assumed to be valid.
  86  */
  87 static inline EGLenum
  88 _eglConvertApiFromIndex(EGLint idx)
  89 {
  90    return _EGL_API_FIRST_API + idx;
  91 }
  92
  93
  94 extern _EGLThreadInfo *
  95 _eglGetCurrentThread(void);
  96
  97
  98 extern void
  99 _eglDestroyCurrentThread(void);
 100
 101
 102 extern EGLBoolean
 103 _eglIsCurrentThreadDummy(void);
 104
 105
 106 extern _EGLContext *
 107 _eglGetAPIContext(EGLenum api);
 108
 109
 110 extern _EGLContext *
 111 _eglGetCurrentContext(void);
 112
 113
 114 extern EGLBoolean
 115 _eglError(EGLint errCode, const char *msg);
 116
 117
 118 #endif /* EGLCURRENT_INCLUDED */