877c33fe7d
Uses EGL_MESA_platform_gbm to get an EglDisplay from a gbm_device. The DrmBackend can provide a DrmBuffer for a gbm_surface and present it. Unfortunately buffer age seems to be slightly broken and we still have artefacts.
80 lines
2.3 KiB
C++
80 lines
2.3 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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/**
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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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bool usesOverlayWindow() const override;
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protected:
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void present() 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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bool makeContextCurrent();
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DrmBackend *m_backend;
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gbm_device *m_device = nullptr;
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gbm_surface *m_gbmSurface = nullptr;
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DrmBuffer *m_frontBuffer = nullptr;
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int m_bufferAge = 0;
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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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