56ce6689fd
Summary: The egl implementation for the virtual platform tries to use a render node if available. If there is no render node it looks for a virtual (kernel driver vgem) device, which unfortunately does not create a render node in mainline kernel (there are patches in ChromiumOS). For this the Udev wrapper is extended to search for renderNode devices and for virtual dri devices. If either render node or vgem dri device is found, it is tried to be opened (without logind escalation) and on success a gbm device is created on it. If any step of this fails the so far default behavior of default device is tried for creating the EGLDisplay. All of this is compile optional, so that the virtual platform does not hard depend on udev and/or gbm. Test Plan: Auto tests which need OpenGL executed and verified that they use the render node or vgem device. Reviewers: #kwin, #plasma_on_wayland Subscribers: plasma-devel, kwin Tags: #plasma_on_wayland, #kwin Differential Revision: https://phabricator.kde.org/D2216
102 lines
2.4 KiB
C++
102 lines
2.4 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) 2014 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_UDEV_H
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#define KWIN_UDEV_H
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#include <memory>
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#include <kwin_export.h>
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struct udev;
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struct udev_device;
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struct udev_monitor;
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namespace KWin
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{
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class Udev;
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class KWIN_EXPORT UdevDevice
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{
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public:
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UdevDevice(udev_device *device);
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~UdevDevice();
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udev_device *getParentWithSubsystemDevType(const char *subsystem, const char *devtype = nullptr) const;
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const char *devNode();
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int sysNum() const;
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const char *property(const char *key);
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bool hasProperty(const char *key, const char *value);
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operator udev_device*() const {
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return m_device;
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}
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operator udev_device*() {
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return m_device;
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}
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typedef std::unique_ptr<UdevDevice> Ptr;
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private:
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udev_device *m_device;
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};
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class KWIN_EXPORT UdevMonitor
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{
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public:
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explicit UdevMonitor(Udev *udev);
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~UdevMonitor();
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int fd() const;
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bool isValid() const {
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return m_monitor != nullptr;
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}
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void filterSubsystemDevType(const char *subSystem, const char *devType = nullptr);
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void enable();
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UdevDevice::Ptr getDevice();
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private:
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Udev *m_udev;
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udev_monitor *m_monitor;
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};
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class KWIN_EXPORT Udev
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{
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public:
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Udev();
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~Udev();
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bool isValid() const {
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return m_udev != nullptr;
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}
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UdevDevice::Ptr primaryGpu();
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UdevDevice::Ptr virtualGpu();
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UdevDevice::Ptr renderNode();
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UdevDevice::Ptr deviceFromSyspath(const char *syspath);
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UdevMonitor *monitor();
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operator udev*() const {
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return m_udev;
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}
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operator udev*() {
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return m_udev;
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}
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private:
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struct udev *m_udev;
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};
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}
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#endif
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