1 files changed, 77 insertions, 0 deletions
diff --git a/src/core/ozone/gl_share_context_qt.cpp b/src/core/ozone/gl_share_context_qt.cpp
new file mode 100644
index 000000000..b1c5e201f
--- /dev/null
+++ b/src/core/ozone/gl_share_context_qt.cpp
@@ -0,0 +1,77 @@
+// Copyright (C) 2020 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
+
+#include "gl_share_context_qt.h"
+#include <QtGui/qtgui-config.h>
+#include <qpa/qplatformnativeinterface.h>
+
+#include "ui/gl/gl_context_egl.h"
+#include "ui/gl/gl_implementation.h"
+
+#if QT_CONFIG(opengl)
+#include <QtGui/qopenglcontext_platform.h>
+#include <QOpenGLContext>
+#include <QOpenGLExtraFunctions>
+#endif // QT_CONFIG(opengl)
+
+namespace QtWebEngineCore {
+
+QtShareGLContext::QtShareGLContext(QOpenGLContext *context)
+    : gl::GLContext(nullptr), m_handle(nullptr)
+{
+#if QT_CONFIG(opengl)
+#if defined(Q_OS_MACOS)
+    qFatal("macOS only support using ANGLE.");
+#endif
+#if defined(Q_OS_WIN)
+    auto *win_ctx = context->nativeInterface<QNativeInterface::QWGLContext>();
+    if (win_ctx && !m_handle)
+        m_handle = (void *)win_ctx->nativeContext();
+#endif
+#if QT_CONFIG(xcb_glx_plugin)
+    auto *glx_ctx = context->nativeInterface<QNativeInterface::QGLXContext>();
+    if (glx_ctx && !m_handle)
+        m_handle = (void *)glx_ctx->nativeContext();
+#endif
+#if QT_CONFIG(egl)
+    auto *egl_ctx = context->nativeInterface<QNativeInterface::QEGLContext>();
+    if (egl_ctx  && !m_handle)
+        m_handle = (void *)egl_ctx->nativeContext();
+#endif
+    if (!m_handle)
+        qFatal("Could not get handle for shared context.");
+#endif // QT_CONFIG(opengl)
+}
+
+unsigned int QtShareGLContext::CheckStickyGraphicsResetStatusImpl()
+{
+#if QT_CONFIG(opengl)
+    if (QOpenGLContext *context = QOpenGLContext::globalShareContext()) {
+        if (context->format().testOption(QSurfaceFormat::ResetNotification))
+            return context->extraFunctions()->glGetGraphicsResetStatus();
+    }
+#endif
+    return 0 /*GL_NO_ERROR*/;
+}
+
+void ShareGroupQt::AboutToAddFirstContext()
+{
+    if (gl::GetGLImplementation() == gl::kGLImplementationEGLANGLE) {
+        m_shareContextQt = new gl::GLContextEGL(nullptr);
+        return;
+    }
+
+#if QT_CONFIG(opengl)
+    // This currently has to be setup by ::main in all applications using QQuickWebEngineView with
+    // delegated rendering.
+    QOpenGLContext *shareContext = QOpenGLContext::globalShareContext();
+    if (!shareContext) {
+        qFatal("QWebEngine: OpenGL resource sharing is not set up in QtQuick. Please make sure to "
+               "call QtWebEngineQuick::initialize() in your main() function before "
+               "QCoreApplication is created.");
+    }
+    m_shareContextQt = new QtShareGLContext(shareContext);
+#endif // QT_CONFIG(opengl)
+}
+
+} // namespace