de2c4cb4ac
The wp_viewporter compositor extension allows clients to crop and scale their surfaces. It can be especially useful for applications wishing to reduce their power consumption, e.g. video players, etc. Given that there is no any direct relationship between the surface size and the buffer size anymore, we have to use specialized helper methods for converting coordinates from the surface-local space to buffer pixel space and vice versa.
127 lines
3.7 KiB
C++
127 lines
3.7 KiB
C++
/********************************************************************
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KWin - the KDE window manager
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This file is part of the KDE project.
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Copyright (C) 2015 Martin Gräßlin <mgraesslin@kde.org>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*********************************************************************/
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#ifndef KWIN_ABSTRACT_EGL_BACKEND_H
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#define KWIN_ABSTRACT_EGL_BACKEND_H
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#include "backend.h"
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#include "texture.h"
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#include <QObject>
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#include <epoxy/egl.h>
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#include <fixx11h.h>
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class QOpenGLFramebufferObject;
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namespace KWaylandServer
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{
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class BufferInterface;
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}
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namespace KWin
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{
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class EglDmabuf;
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class KWIN_EXPORT AbstractEglBackend : public QObject, public OpenGLBackend
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{
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Q_OBJECT
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public:
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~AbstractEglBackend() override;
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bool makeCurrent() override;
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void doneCurrent() override;
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EGLDisplay eglDisplay() const {
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return m_display;
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}
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EGLContext context() const {
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return m_context;
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}
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EGLSurface surface() const {
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return m_surface;
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}
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EGLConfig config() const {
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return m_config;
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}
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protected:
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AbstractEglBackend();
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void setEglDisplay(const EGLDisplay &display);
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void setSurface(const EGLSurface &surface);
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void setConfig(const EGLConfig &config);
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void cleanup();
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virtual void cleanupSurfaces();
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bool initEglAPI();
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void initKWinGL();
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void initBufferAge();
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void initClientExtensions();
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void initWayland();
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bool hasClientExtension(const QByteArray &ext) const;
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bool isOpenGLES() const;
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bool createContext();
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private:
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void unbindWaylandDisplay();
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EGLDisplay m_display = EGL_NO_DISPLAY;
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EGLSurface m_surface = EGL_NO_SURFACE;
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EGLContext m_context = EGL_NO_CONTEXT;
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EGLConfig m_config = nullptr;
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QList<QByteArray> m_clientExtensions;
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EglDmabuf *m_dmaBuf = nullptr;
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};
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class KWIN_EXPORT AbstractEglTexture : public SceneOpenGLTexturePrivate
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{
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public:
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~AbstractEglTexture() override;
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bool loadTexture(WindowPixmap *pixmap) override;
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void updateTexture(WindowPixmap *pixmap) override;
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OpenGLBackend *backend() override;
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protected:
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AbstractEglTexture(SceneOpenGLTexture *texture, AbstractEglBackend *backend);
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EGLImageKHR image() const {
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return m_image;
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}
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void setImage(const EGLImageKHR &img) {
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m_image = img;
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}
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SceneOpenGLTexture *texture() const {
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return q;
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}
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private:
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void createTextureSubImage(const QImage &image, const QRegion &damage);
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bool createTextureImage(const QImage &image);
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bool loadShmTexture(const QPointer<KWaylandServer::BufferInterface> &buffer);
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bool loadEglTexture(const QPointer<KWaylandServer::BufferInterface> &buffer);
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bool loadDmabufTexture(const QPointer< KWaylandServer::BufferInterface > &buffer);
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bool loadInternalImageObject(WindowPixmap *pixmap);
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EGLImageKHR attach(const QPointer<KWaylandServer::BufferInterface> &buffer);
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bool updateFromFBO(const QSharedPointer<QOpenGLFramebufferObject> &fbo);
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bool updateFromInternalImageObject(WindowPixmap *pixmap);
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SceneOpenGLTexture *q;
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AbstractEglBackend *m_backend;
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EGLImageKHR m_image;
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};
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}
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#endif
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