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39 
40 #ifndef QEGLCONVENIENCE_H
41 #define QEGLCONVENIENCE_H
42 
43 //
44 //  W A R N I N G
45 //  -------------
46 //
47 // This file is not part of the Qt API.  It exists purely as an
48 // implementation detail.  This header file may change from version to
49 // version without notice, or even be removed.
50 //
51 // We mean it.
52 //
53 
54 #include <QtGui/QSurfaceFormat>
55 #include <QtCore/QVector>
56 #include <QtCore/QSizeF>
57 #include <QtEglSupport/private/qt_egl_p.h>
58 
59 QT_BEGIN_NAMESPACE
60 
61 QVector<EGLint> q_createConfigAttributesFromFormat(const QSurfaceFormat &format);
62 bool q_reduceConfigAttributes(QVector<EGLint> *configAttributes);
63 EGLConfig q_configFromGLFormat(EGLDisplay display, const QSurfaceFormat &format, bool highestPixelFormat = false, int surfaceType = EGL_WINDOW_BIT);
64 QSurfaceFormat q_glFormatFromConfig(EGLDisplay display, const EGLConfig config, const QSurfaceFormat &referenceFormat = QSurfaceFormat());
65 bool q_hasEglExtension(EGLDisplay display,const char* extensionName);
66 void q_printEglConfig(EGLDisplay display, EGLConfig config);
67 
68 #ifdef Q_OS_UNIX
69 QSizeF q_physicalScreenSizeFromFb(int framebufferDevice, const QSize &screenSize = QSize());
70 QSize q_screenSizeFromFb(int framebufferDevice);
71 int q_screenDepthFromFb(int framebufferDevice);
72 qreal q_refreshRateFromFb(int framebufferDevice);
73 #endif
74 
75 class QEglConfigChooser
76 {
77 public:
78     QEglConfigChooser(EGLDisplay display);
79     virtual ~QEglConfigChooser();
80 
display()81     EGLDisplay display() const { return m_display; }
82 
setSurfaceType(EGLint surfaceType)83     void setSurfaceType(EGLint surfaceType) { m_surfaceType = surfaceType; }
surfaceType()84     EGLint surfaceType() const { return m_surfaceType; }
85 
setSurfaceFormat(const QSurfaceFormat & format)86     void setSurfaceFormat(const QSurfaceFormat &format) { m_format = format; }
surfaceFormat()87     QSurfaceFormat surfaceFormat() const { return m_format; }
88 
setIgnoreColorChannels(bool ignore)89     void setIgnoreColorChannels(bool ignore) { m_ignore = ignore; }
ignoreColorChannels()90     bool ignoreColorChannels() const { return m_ignore; }
91 
92     EGLConfig chooseConfig();
93 
94 protected:
95     virtual bool filterConfig(EGLConfig config) const;
96 
97     QSurfaceFormat m_format;
98     EGLDisplay m_display;
99     EGLint m_surfaceType;
100     bool m_ignore;
101 
102     int m_confAttrRed;
103     int m_confAttrGreen;
104     int m_confAttrBlue;
105     int m_confAttrAlpha;
106 };
107 
108 
109 QT_END_NAMESPACE
110 
111 #endif //QEGLCONVENIENCE_H
112