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      1 /**************************************************************************
      2  *
      3  * Copyright 2009-2010 Chia-I Wu <olvaffe (at) 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 */
    117