qwasmopenglcontext.h

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// Copyright (C) 2018 The Qt Company Ltd.

// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only

// Qt-Security score:significant reason:default

#ifndef QWASMOPENGLCONTEXT_H

#define QWASMOPENGLCONTEXT_H

#include <QtCore/qhash.h>

#include <qpa/qplatformopenglcontext.h>

#include <emscripten.h>

#include <emscripten/html5.h>

QT_BEGIN_NAMESPACE

class QOpenGLContext;

class QPlatformScreen;

class QPlatformSurface;

class QWasmOpenGLContext : public QPlatformOpenGLContext

public:

    explicit QWasmOpenGLContext(QOpenGLContext *context);

    ~QWasmOpenGLContext();

    QSurfaceFormat format() const override;

    void swapBuffers(QPlatformSurface *surface) override;

    GLuint defaultFramebufferObject(QPlatformSurface *surface) const override;

    bool makeCurrent(QPlatformSurface *surface) override;

    void doneCurrent() override;

    bool isSharing() const override;

    bool isValid() const override;

    QFunctionPointer getProcAddress(const char *procName) override;

    static void destroyWebGLContext(QPlatformSurface *surface);

private:

    static bool isOpenGLVersionSupported(QSurfaceFormat format);

    EMSCRIPTEN_WEBGL_CONTEXT_HANDLE createEmscriptenContext(const std::string &canvasSelector, QSurfaceFormat format);

    static void destroyWebGLContext(EMSCRIPTEN_WEBGL_CONTEXT_HANDLE contextHandle);

    QSurfaceFormat m_actualFormat;

    QPlatformSurface *m_madeCurrentSurface = nullptr;

    QPlatformSurface *m_contextOwningSurface = nullptr;

    static QHash<QPlatformSurface *, EMSCRIPTEN_WEBGL_CONTEXT_HANDLE> s_contexts;

};

QT_END_NAMESPACE

#endif // QWASMOPENGLCONTEXT_H