7c8c1dac0a
For each DrmOutput a gbm_surface and EglSurface is created. When rendering per screen the context is made current on each of the surfaces. Note: viewport handling needs to be improved by e.g. passing through the scene to restore to correct viewport after dropping an FBO. Furthermore it seems like buffer age is not working correctly in this setup (not overly surprising). Dynamic changes are not yet supported.
89 lines
2.6 KiB
C++
89 lines
2.6 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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bool usesOverlayWindow() const override;
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bool perScreenRendering() const override;
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void 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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bool makeContextCurrent(const 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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