eglcurrent.h revision af69d88d 
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_ES3_BIT_KHR | \
41    EGL_OPENGL_BIT)
42
43
44#define _EGL_API_FIRST_API EGL_OPENGL_ES_API
45#define _EGL_API_LAST_API EGL_OPENGL_API
46#define _EGL_API_NUM_APIS (_EGL_API_LAST_API - _EGL_API_FIRST_API + 1)
47
48
49/**
50 * Per-thread info
51 */
52struct _egl_thread_info
53{
54   EGLint LastError;
55   _EGLContext *CurrentContexts[_EGL_API_NUM_APIS];
56   /* use index for fast access to current context */
57   EGLint CurrentAPIIndex;
58};
59
60
61/**
62 * Return true if a client API enum is recognized.
63 */
64static INLINE EGLBoolean
65_eglIsApiValid(EGLenum api)
66{
67   return (api >= _EGL_API_FIRST_API && api <= _EGL_API_LAST_API);
68}
69
70
71/**
72 * Convert a client API enum to an index, for use by thread info.
73 * The client API enum is assumed to be valid.
74 */
75static INLINE EGLint
76_eglConvertApiToIndex(EGLenum api)
77{
78   return api - _EGL_API_FIRST_API;
79}
80
81
82/**
83 * Convert an index, used by thread info, to a client API enum.
84 * The index is assumed to be valid.
85 */
86static INLINE EGLenum
87_eglConvertApiFromIndex(EGLint idx)
88{
89   return _EGL_API_FIRST_API + idx;
90}
91
92
93PUBLIC _EGLThreadInfo *
94_eglGetCurrentThread(void);
95
96
97extern void
98_eglDestroyCurrentThread(void);
99
100
101extern EGLBoolean
102_eglIsCurrentThreadDummy(void);
103
104
105PUBLIC _EGLContext *
106_eglGetAPIContext(EGLenum api);
107
108
109PUBLIC _EGLContext *
110_eglGetCurrentContext(void);
111
112
113PUBLIC EGLBoolean
114_eglError(EGLint errCode, const char *msg);
115
116
117#endif /* EGLCURRENT_INCLUDED */
118