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    _EGLThreadInfo *Next; /* used to link threads */
  60    EGLint LastError;
  61    _EGLContext *CurrentContexts[_EGL_API_NUM_APIS];
  62    /* use index for fast access to current context */
  63    EGLint CurrentAPIIndex;
  64 };
  65
  66
  67 /**
  68  * Convert a client API enum to an index, for use by thread info.
  69  * The client API enum is assumed to be valid.
  70  */
  71 static inline EGLint
  72 _eglConvertApiToIndex(EGLenum api)
  73 {
  74    return api - _EGL_API_FIRST_API;
  75 }
  76
  77
  78 /**
  79  * Convert an index, used by thread info, to a client API enum.
  80  * The index is assumed to be valid.
  81  */
  82 static inline EGLenum
  83 _eglConvertApiFromIndex(EGLint idx)
  84 {
  85    return _EGL_API_FIRST_API + idx;
  86 }
  87
  88
  89 extern _EGLThreadInfo *
  90 _eglGetCurrentThread(void);
  91
  92
  93 extern void
  94 _eglDestroyCurrentThread(void);
  95
  96
  97 extern EGLBoolean
  98 _eglIsCurrentThreadDummy(void);
  99
 100
 101 extern _EGLContext *
 102 _eglGetAPIContext(EGLenum api);
 103
 104
 105 extern _EGLContext *
 106 _eglGetCurrentContext(void);
 107
 108
 109 extern EGLBoolean
 110 _eglError(EGLint errCode, const char *msg);
 111
 112
 113 #ifdef __cplusplus
 114 }
 115 #endif
 116
 117 #endif /* EGLCURRENT_INCLUDED */