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// Copyright (C) 2018 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
#ifndef QWASMOPENGLCONTEXT_H
#define QWASMOPENGLCONTEXT_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;
private:
struct QOpenGLContextData
{
QPlatformSurface *surface = nullptr;
EMSCRIPTEN_WEBGL_CONTEXT_HANDLE handle = 0;
};
static bool isOpenGLVersionSupported(QSurfaceFormat format);
EMSCRIPTEN_WEBGL_CONTEXT_HANDLE obtainEmscriptenContext(QPlatformSurface *surface);
static EMSCRIPTEN_WEBGL_CONTEXT_HANDLE
createEmscriptenContext(const std::string &canvasSelector, QSurfaceFormat format);
static void destroyWebGLContext(EMSCRIPTEN_WEBGL_CONTEXT_HANDLE contextHandle);
QSurfaceFormat m_actualFormat;
QOpenGLContext *m_qGlContext;
QOpenGLContextData m_ownedWebGLContext;
EMSCRIPTEN_WEBGL_CONTEXT_HANDLE m_usedWebGLContextHandle = 0;
};
QT_END_NAMESPACE
#endif // QWASMOPENGLCONTEXT_H
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