2a64755b76
The complete rendering is now splitted per output including present which means that we only need to make the context per output current once per rendering. Unfortunately our architecture does not properly support gathering the damage for multiple outputs. In fact the damage information is lost after the first output got rendered. Thus we currently only support buffer age for the first output, on other outputs full repaints are caused.
95 lines
2.9 KiB
C++
95 lines
2.9 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_EGL_GBM_BACKEND_H
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#define KWIN_EGL_GBM_BACKEND_H
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#include "abstract_egl_backend.h"
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#include "scene_opengl.h"
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struct gbm_device;
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struct gbm_surface;
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namespace KWin
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{
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class DrmBackend;
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class DrmBuffer;
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class DrmOutput;
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/**
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* @brief OpenGL Backend using Egl on a GBM surface.
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**/
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class EglGbmBackend : public QObject, public AbstractEglBackend
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{
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Q_OBJECT
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public:
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EglGbmBackend(DrmBackend *b);
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virtual ~EglGbmBackend();
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void screenGeometryChanged(const QSize &size) override;
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SceneOpenGL::TexturePrivate *createBackendTexture(SceneOpenGL::Texture *texture) override;
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QRegion prepareRenderingFrame() override;
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void endRenderingFrame(const QRegion &renderedRegion, const QRegion &damagedRegion) override;
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void endRenderingFrameForScreen(int screenId, const QRegion &damage, const QRegion &damagedRegion) override;
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bool usesOverlayWindow() const override;
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bool perScreenRendering() const override;
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QRegion prepareRenderingForScreen(int screenId) override;
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protected:
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void present() override;
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void cleanupSurfaces() override;
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private:
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void init();
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bool initializeEgl();
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bool initBufferConfigs();
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bool initRenderingContext();
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struct Output {
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DrmOutput *output = nullptr;
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DrmBuffer *buffer = nullptr;
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gbm_surface *gbmSurface = nullptr;
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EGLSurface eglSurface = EGL_NO_SURFACE;
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int bufferAge = 0;
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/**
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* @brief The damage history for the past 10 frames.
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*/
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QList<QRegion> damageHistory;
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};
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bool makeContextCurrent(const Output &output);
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void presentOnOutput(Output &output);
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DrmBackend *m_backend;
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gbm_device *m_device = nullptr;
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QVector<Output> m_outputs;
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friend class EglGbmTexture;
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};
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/**
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* @brief Texture using an EGLImageKHR.
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**/
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class EglGbmTexture : public AbstractEglTexture
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{
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public:
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virtual ~EglGbmTexture();
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private:
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friend class EglGbmBackend;
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EglGbmTexture(SceneOpenGL::Texture *texture, EglGbmBackend *backend);
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};
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} // namespace
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#endif
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