Use ozone for x11

Switch to use ozone also for x11/glx. This way we have a
more elegant approach to hook in our gl surface classes
and we use ozone for all linux qpa backends. Moreover,
we have now also more fine grain control to reimplement
gl surface handling logic.

This also aims to fix currently broken wayland backend,
but instead of patching the broken x11 calls, we simply reuse
ozone which does not use x11 for ozone egl.

Add webengine-x11 check to handle ozone glx plugin compilation.

For ozone egl backend reimplement missing functions.

Task-number: QTBUG-65682
Task-number: QTBUG-51631
Change-Id: I8b45c6f4d09a1c703efb12b6452d78ab385371ab
Reviewed-by: Jüri Valdmann <juri.valdmann@qt.io>

1 files changed, 85 insertions, 0 deletions

diff --git a/src/core/ozone/gl_ozone_glx_qt.h b/src/core/ozone/gl_ozone_glx_qt.h
new file mode 100644
index 000000000..ffbd60454
--- /dev/null
+++ b/src/core/ozone/gl_ozone_glx_qt.h
@@ -0,0 +1,85 @@
+/****************************************************************************
+**
+** Copyright (C) 2018 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the QtWebEngine module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or (at your option) the GNU General
+** Public license version 3 or any later version approved by the KDE Free
+** Qt Foundation. The licenses are as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-2.0.html and
+** https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef UI_OZONE_GLX_QT_H_
+#define UI_OZONE_GLX_QT_H
+
+#include "base/macros.h"
+#include "ui/gl/gl_implementation.h"
+#include "ui/ozone/public/gl_ozone.h"
+
+namespace ui {
+
+class GLOzoneGLXQt : public GLOzone {
+
+public:
+    GLOzoneGLXQt() {}
+    ~GLOzoneGLXQt() override {}
+
+    bool InitializeGLOneOffPlatform() override;
+    bool InitializeStaticGLBindings(gl::GLImplementation implementation) override;
+    void InitializeDebugGLBindings() override;
+    bool InitializeExtensionSettingsOneOffPlatform() override;
+    void ShutdownGL() override;
+    void SetDisabledExtensionsPlatform(
+        const std::string& disabled_extensions) override;
+    bool GetGLWindowSystemBindingInfo(
+            gl::GLWindowSystemBindingInfo* info) override;
+
+    scoped_refptr<gl::GLContext> CreateGLContext(
+            gl::GLShareGroup* share_group,
+            gl::GLSurface* compatible_surface,
+            const gl::GLContextAttribs& attribs) override;
+
+    scoped_refptr<gl::GLSurface> CreateViewGLSurface(
+            gfx::AcceleratedWidget window) override;
+
+    scoped_refptr<gl::GLSurface> CreateSurfacelessViewGLSurface(
+            gfx::AcceleratedWidget window) override;
+
+    scoped_refptr<gl::GLSurface> CreateOffscreenGLSurface(
+            const gfx::Size& size) override;
+
+private:
+    DISALLOW_COPY_AND_ASSIGN(GLOzoneGLXQt);
+};
+
+}  // namespace ui
+
+#endif  // UI_OZONE_GLX_QT_H