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
  33 #include "egltypedefs.h"
  34
  35
  36 #define _EGL_API_ALL_BITS \
  37    (EGL_OPENGL_ES_BIT   | \
  38     EGL_OPENVG_BIT      | \
  39     EGL_OPENGL_ES2_BIT  | \
  40     EGL_OPENGL_BIT)
  41
  42
  43 #define _EGL_API_FIRST_API EGL_OPENGL_ES_API
  44 #define _EGL_API_LAST_API EGL_OPENGL_API
  45 #define _EGL_API_NUM_APIS (_EGL_API_LAST_API - _EGL_API_FIRST_API + 1)
  46
  47
  48 /**
  49  * Per-thread info
  50  */
  51 struct _egl_thread_info
  52 {
  53    EGLint LastError;
  54    _EGLContext *CurrentContexts[_EGL_API_NUM_APIS];
  55    /* use index for fast access to current context */
  56    EGLint CurrentAPIIndex;
  57 };
  58
  59
  60 /**
  61  * Return true if a client API enum is recognized.
  62  */
  63 static INLINE EGLBoolean
  64 _eglIsApiValid(EGLenum api)
  65 {
  66    return (api >= _EGL_API_FIRST_API && api <= _EGL_API_LAST_API);
  67 }
  68
  69
  70 /**
  71  * Convert a client API enum to an index, for use by thread info.
  72  * The client API enum is assumed to be valid.
  73  */
  74 static INLINE EGLint
  75 _eglConvertApiToIndex(EGLenum api)
  76 {
  77    return api - _EGL_API_FIRST_API;
  78 }
  79
  80
  81 /**
  82  * Convert an index, used by thread info, to a client API enum.
  83  * The index is assumed to be valid.
  84  */
  85 static INLINE EGLenum
  86 _eglConvertApiFromIndex(EGLint idx)
  87 {
  88    return _EGL_API_FIRST_API + idx;
  89 }
  90
  91
  92 PUBLIC _EGLThreadInfo *
  93 _eglGetCurrentThread(void);
  94
  95
  96 extern void
  97 _eglDestroyCurrentThread(void);
  98
  99
 100 extern EGLBoolean
 101 _eglIsCurrentThreadDummy(void);
 102
 103
 104 PUBLIC _EGLContext *
 105 _eglGetAPIContext(EGLenum api);
 106
 107
 108 PUBLIC _EGLContext *
 109 _eglGetCurrentContext(void);
 110
 111
 112 PUBLIC EGLBoolean
 113 _eglError(EGLint errCode, const char *msg);
 114
 115
 116 #endif /* EGLCURRENT_INCLUDED */