kwin/abstract_egl_backend.h

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/********************************************************************
KWin - the KDE window manager
This file is part of the KDE project.
Copyright (C) 2015 Martin Gräßlin <mgraesslin@kde.org>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*********************************************************************/
#ifndef KWIN_ABSTRACT_EGL_BACKEND_H
#define KWIN_ABSTRACT_EGL_BACKEND_H
#include "scene_opengl.h"
#include <epoxy/egl.h>
#include <fixx11h.h>
class QOpenGLFramebufferObject;
namespace KWin
{
class KWIN_EXPORT AbstractEglBackend : public QObject, public OpenGLBackend
{
Q_OBJECT
public:
virtual ~AbstractEglBackend();
bool makeCurrent() override;
void doneCurrent() override;
EGLDisplay eglDisplay() const {
return m_display;
}
EGLContext context() const {
return m_context;
}
EGLSurface surface() const {
return m_surface;
}
EGLConfig config() const {
return m_config;
}
protected:
AbstractEglBackend();
void setEglDisplay(const EGLDisplay &display);
void setSurface(const EGLSurface &surface);
void setConfig(const EGLConfig &config);
void cleanup();
virtual void cleanupSurfaces();
bool initEglAPI();
void initKWinGL();
void initBufferAge();
void initClientExtensions();
void initWayland();
bool hasClientExtension(const QByteArray &ext) const;
bool isOpenGLES() const;
bool createContext();
private:
void unbindWaylandDisplay();
EGLDisplay m_display = EGL_NO_DISPLAY;
EGLSurface m_surface = EGL_NO_SURFACE;
EGLContext m_context = EGL_NO_CONTEXT;
EGLConfig m_config = nullptr;
QList<QByteArray> m_clientExtensions;
};
class KWIN_EXPORT AbstractEglTexture : public SceneOpenGL::TexturePrivate
{
public:
virtual ~AbstractEglTexture();
bool loadTexture(WindowPixmap *pixmap) override;
void updateTexture(WindowPixmap *pixmap) override;
OpenGLBackend *backend() override;
protected:
AbstractEglTexture(SceneOpenGL::Texture *texture, AbstractEglBackend *backend);
EGLImageKHR image() const {
return m_image;
}
void setImage(const EGLImageKHR &img) {
m_image = img;
}
SceneOpenGL::Texture *texture() const {
return q;
}
private:
bool loadShmTexture(const QPointer<KWayland::Server::BufferInterface> &buffer);
bool loadEglTexture(const QPointer<KWayland::Server::BufferInterface> &buffer);
EGLImageKHR attach(const QPointer<KWayland::Server::BufferInterface> &buffer);
bool updateFromFBO(const QSharedPointer<QOpenGLFramebufferObject> &fbo);
SceneOpenGL::Texture *q;
AbstractEglBackend *m_backend;
EGLImageKHR m_image;
};
}
#endif