1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
|
/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL21$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see http://www.qt.io/terms-conditions. For further
** information use the contact form at http://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** As a special exception, The Qt Company gives you certain additional
** rights. These rights are described in The Qt Company LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QMEDIAOPENGLHELPER_P_H
#define QMEDIAOPENGLHELPER_P_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists purely as an
// implementation detail. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#include <QtGui/QOpenGLContext>
#if defined(Q_OS_WIN) && !defined(Q_OS_WINRT) && (defined(QT_OPENGL_ES_2) || defined(QT_OPENGL_DYNAMIC))
#include <EGL/egl.h>
#endif
QT_BEGIN_NAMESPACE
class QMediaOpenGLHelper
{
public:
static bool isANGLE();
};
inline bool QMediaOpenGLHelper::isANGLE()
{
#ifdef Q_OS_WINRT
return true;
#else
bool isANGLE = false;
# if defined(Q_OS_WIN) && !defined(Q_OS_WINCE) && (defined(QT_OPENGL_ES_2) || defined(QT_OPENGL_DYNAMIC))
if (QOpenGLContext::openGLModuleType() == QOpenGLContext::LibGLES) {
// Although unlikely, technically LibGLES could mean a non-ANGLE EGL/GLES2 implementation too.
// Verify that it is indeed ANGLE.
# ifdef QT_OPENGL_ES_2_ANGLE_STATIC
// ANGLE linked-in statically.
isANGLE = true;
# else
// Qt configured with either -opengl es2 or -opengl desktop.
# ifdef QT_DEBUG
HMODULE eglHandle = LoadLibraryW(L"libEGLd.dll");
# else
HMODULE eglHandle = LoadLibraryW(L"libEGL.dll");
# endif // QT_DEBUG
if (eglHandle) {
typedef EGLDisplay (EGLAPIENTRYP EglGetDisplay)(EGLNativeDisplayType display_id);
typedef EGLBoolean (EGLAPIENTRYP EglInitialize)(EGLDisplay dpy, EGLint *major, EGLint *minor);
typedef const char * (EGLAPIENTRYP EglQueryString)(EGLDisplay dpy, EGLint name);
EglGetDisplay eglGetDisplay = (EglGetDisplay) GetProcAddress(eglHandle, "eglGetDisplay");
EglInitialize eglInitialize = (EglInitialize) GetProcAddress(eglHandle, "eglInitialize");
EglQueryString eglQueryString = (EglQueryString) GetProcAddress(eglHandle, "eglQueryString");
if (eglGetDisplay && eglInitialize && eglQueryString) {
// EGL may not be initialized at this stage.
EGLDisplay dpy = eglGetDisplay(EGL_DEFAULT_DISPLAY);
eglInitialize(dpy, 0, 0);
const char *vendorStr = eglQueryString(dpy, EGL_VERSION);
isANGLE = vendorStr && strstr(vendorStr, "ANGLE");
}
}
# endif // QT_OPENGL_ES_2_ANGLE_STATIC
}
# endif // Q_OS_WIN && !Q_OS_WINCE && (QT_OPENGL_ES_2 || QT_OPENGL_DYNAMIC)
return isANGLE;
#endif // Q_OS_WINRT
}
QT_END_NAMESPACE
#endif
|
