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39
40#ifndef QEGLPLATFORMCONTEXT_H
41#define QEGLPLATFORMCONTEXT_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 <QtCore/qtextstream.h>
55#include <qpa/qplatformwindow.h>
56#include <qpa/qplatformopenglcontext.h>
57#include <QtCore/QVariant>
58#include <QtEglSupport/private/qt_egl_p.h>
59
60QT_BEGIN_NAMESPACE
61
62class QEGLPlatformContext : public QPlatformOpenGLContext
63{
64public:
65 enum Flag {
66 NoSurfaceless = 0x01
67 };
68 Q_DECLARE_FLAGS(Flags, Flag)
69
70 QEGLPlatformContext(const QSurfaceFormat &format, QPlatformOpenGLContext *share, EGLDisplay display,
71 EGLConfig *config = nullptr, const QVariant &nativeHandle = QVariant(),
72 Flags flags = { });
73 ~QEGLPlatformContext();
74
75 void initialize() override;
76 bool makeCurrent(QPlatformSurface *surface) override;
77 void doneCurrent() override;
78 void swapBuffers(QPlatformSurface *surface) override;
79 QFunctionPointer getProcAddress(const char *procName) override;
80
81 QSurfaceFormat format() const override;
82 bool isSharing() const override { return m_shareContext != EGL_NO_CONTEXT; }
83 bool isValid() const override { return m_eglContext != EGL_NO_CONTEXT; }
84
85 EGLContext eglContext() const;
86 EGLDisplay eglDisplay() const;
87 EGLConfig eglConfig() const;
88
89protected:
90 virtual EGLSurface eglSurfaceForPlatformSurface(QPlatformSurface *surface) = 0;
91 virtual EGLSurface createTemporaryOffscreenSurface();
92 virtual void destroyTemporaryOffscreenSurface(EGLSurface surface);
93 virtual void runGLChecks();
94
95private:
96 void init(const QSurfaceFormat &format, QPlatformOpenGLContext *share);
97 void adopt(const QVariant &nativeHandle, QPlatformOpenGLContext *share);
98 void updateFormatFromGL();
99
100 EGLContext m_eglContext;
101 EGLContext m_shareContext;
102 EGLDisplay m_eglDisplay;
103 EGLConfig m_eglConfig;
104 QSurfaceFormat m_format;
105 EGLenum m_api;
106 int m_swapInterval;
107 bool m_swapIntervalEnvChecked;
108 int m_swapIntervalFromEnv;
109 Flags m_flags;
110 bool m_ownsContext;
111 QVector<EGLint> m_contextAttrs;
112};
113
114Q_DECLARE_OPERATORS_FOR_FLAGS(QEGLPlatformContext::Flags)
115
116QT_END_NAMESPACE
117
118#endif //QEGLPLATFORMCONTEXT_H
119

source code of qtbase/src/platformsupport/eglconvenience/qeglplatformcontext_p.h