1// Copyright (C) 2020 The Qt Company Ltd.
2// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
3
4#ifndef QEGLCONVENIENCE_H
5#define QEGLCONVENIENCE_H
6
7//
8// W A R N I N G
9// -------------
10//
11// This file is not part of the Qt API. It exists purely as an
12// implementation detail. This header file may change from version to
13// version without notice, or even be removed.
14//
15// We mean it.
16//
17
18#include <QtGui/qsurfaceformat.h>
19#include <QtCore/qlist.h>
20#include <QtCore/qsize.h>
21
22#include <QtGui/private/qt_egl_p.h>
23
24
25QT_BEGIN_NAMESPACE
26
27Q_GUI_EXPORT QList<EGLint> q_createConfigAttributesFromFormat(const QSurfaceFormat &format);
28
29Q_GUI_EXPORT bool q_reduceConfigAttributes(QList<EGLint> *configAttributes);
30
31Q_GUI_EXPORT EGLConfig q_configFromGLFormat(EGLDisplay display,
32 const QSurfaceFormat &format,
33 bool highestPixelFormat = false,
34 int surfaceType = EGL_WINDOW_BIT);
35
36Q_GUI_EXPORT QSurfaceFormat q_glFormatFromConfig(EGLDisplay display, const EGLConfig config,
37 const QSurfaceFormat &referenceFormat = {});
38
39Q_GUI_EXPORT bool q_hasEglExtension(EGLDisplay display,const char* extensionName);
40
41Q_GUI_EXPORT void q_printEglConfig(EGLDisplay display, EGLConfig config);
42
43#ifdef Q_OS_UNIX
44Q_GUI_EXPORT QSizeF q_physicalScreenSizeFromFb(int framebufferDevice,
45 const QSize &screenSize = {});
46
47Q_GUI_EXPORT QSize q_screenSizeFromFb(int framebufferDevice);
48
49Q_GUI_EXPORT int q_screenDepthFromFb(int framebufferDevice);
50
51Q_GUI_EXPORT qreal q_refreshRateFromFb(int framebufferDevice);
52
53#endif
54
55class Q_GUI_EXPORT QEglConfigChooser
56{
57public:
58 QEglConfigChooser(EGLDisplay display);
59 virtual ~QEglConfigChooser();
60
61 EGLDisplay display() const { return m_display; }
62
63 void setSurfaceType(EGLint surfaceType) { m_surfaceType = surfaceType; }
64 EGLint surfaceType() const { return m_surfaceType; }
65
66 void setSurfaceFormat(const QSurfaceFormat &format) { m_format = format; }
67 QSurfaceFormat surfaceFormat() const { return m_format; }
68
69 void setIgnoreColorChannels(bool ignore) { m_ignore = ignore; }
70 bool ignoreColorChannels() const { return m_ignore; }
71
72 EGLConfig chooseConfig();
73
74protected:
75 virtual bool filterConfig(EGLConfig config) const;
76
77 QSurfaceFormat m_format;
78 EGLDisplay m_display;
79 EGLint m_surfaceType;
80 bool m_ignore;
81
82 int m_confAttrRed;
83 int m_confAttrGreen;
84 int m_confAttrBlue;
85 int m_confAttrAlpha;
86};
87
88
89QT_END_NAMESPACE
90
91#endif //QEGLCONVENIENCE_H
92

source code of qtbase/src/gui/opengl/platform/egl/qeglconvenience_p.h