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 #ifdef __cplusplus
  38 extern "C" {
  39 #endif
  40
  41 #define _EGL_API_ALL_BITS \
  42    (EGL_OPENGL_ES_BIT   | \
  43     EGL_OPENVG_BIT      | \
  44     EGL_OPENGL_ES2_BIT  | \
  45     EGL_OPENGL_ES3_BIT_KHR | \
  46     EGL_OPENGL_BIT)
  47
  48
  49 #define _EGL_API_FIRST_API EGL_OPENGL_ES_API
  50 #define _EGL_API_LAST_API EGL_OPENGL_API
  51 #define _EGL_API_NUM_APIS (_EGL_API_LAST_API - _EGL_API_FIRST_API + 1)
  52
  53
  54 /**
  55  * Per-thread info
  56  */
  57 struct _egl_thread_info
  58 {
  59    EGLint LastError;
  60    _EGLContext *CurrentContexts[_EGL_API_NUM_APIS];
  61    /* use index for fast access to current context */
  62    EGLint CurrentAPIIndex;
  63 };
  64
  65
  66 /**
  67  * Return true if a client API enum is recognized.
  68  */
  69 static inline EGLBoolean
  70 _eglIsApiValid(EGLenum api)
  71 {
  72    return (api >= _EGL_API_FIRST_API && api <= _EGL_API_LAST_API);
  73 }
  74
  75
  76 /**
  77  * Convert a client API enum to an index, for use by thread info.
  78  * The client API enum is assumed to be valid.
  79  */
  80 static inline EGLint
  81 _eglConvertApiToIndex(EGLenum api)
  82 {
  83    return api - _EGL_API_FIRST_API;
  84 }
  85
  86
  87 /**
  88  * Convert an index, used by thread info, to a client API enum.
  89  * The index is assumed to be valid.
  90  */
  91 static inline EGLenum
  92 _eglConvertApiFromIndex(EGLint idx)
  93 {
  94    return _EGL_API_FIRST_API + idx;
  95 }
  96
  97
  98 extern _EGLThreadInfo *
  99 _eglGetCurrentThread(void);
 100
 101
 102 extern void
 103 _eglDestroyCurrentThread(void);
 104
 105
 106 extern EGLBoolean
 107 _eglIsCurrentThreadDummy(void);
 108
 109
 110 extern _EGLContext *
 111 _eglGetAPIContext(EGLenum api);
 112
 113
 114 extern _EGLContext *
 115 _eglGetCurrentContext(void);
 116
 117
 118 extern EGLBoolean
 119 _eglError(EGLint errCode, const char *msg);
 120
 121
 122 #ifdef __cplusplus
 123 }
 124 #endif
 125
 126 #endif /* EGLCURRENT_INCLUDED */