qohosegl.h

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// Copyright (C) 2025 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
 
#ifndef QOHOSEGL_H
#define QOHOSEGL_H
 
#include "EGL/egl.h"
#include "EGL/eglplatform.h"
#include <GLES3/gl3.h>
#include <QSharedPointer>
#include <QtCore/qglobal.h>
 
QT_BEGIN_NAMESPACE
 
class QOhosEGLSurface
{
public:
    enum class SurfaceFlagBits {
        PreserveBufferContentsOnSwap = 1 << 0,
    };
    Q_DECLARE_FLAGS(SurfaceFlags, SurfaceFlagBits)
 
    QOhosEGLSurface() = default;
 
    QOhosEGLSurface(const QOhosEGLSurface&) = delete;
    QOhosEGLSurface& operator=(const QOhosEGLSurface&) = delete;
 
    QOhosEGLSurface(QOhosEGLSurface &&) = delete;
    QOhosEGLSurface& operator=(QOhosEGLSurface &&) = delete;
 
    ~QOhosEGLSurface();
 
    EGLSurface tryGetOrCreateEGLWindowSurface(EGLDisplay display, EGLConfig config, SurfaceFlags flags = {});
    void setNativeWindowSurface(EGLNativeWindowType nativeWindow);
    SurfaceFlags currentSurfaceFlags() const;
 
private:
    void cleanup();
    void tryCreateSurface(EGLDisplay display, EGLConfig config, SurfaceFlags surfaceFlags);
 
    EGLDisplay m_refCurrentDisplay = EGL_NO_DISPLAY;
    EGLConfig m_refCurrentConfig = nullptr;
    EGLNativeWindowType m_refCurrentNativeWindow = nullptr;
    EGLNativeWindowType m_refTargetNativeWindow = nullptr;
    EGLSurface m_ownEglSurface = EGL_NO_SURFACE;
    SurfaceFlags m_currentSurfaceFlags = {};
};
 
QT_END_NAMESPACE
 
#endif // QOHOSEGL_H