997cf97c9f
This is Milestone 1 of full support of Atomic Mode Setting (AMS) and Universal Planes in the KWin DRM backend. With Milestone 1 we can use the primary plane of a DRM output and do an AMS commit (this means mode setting aswell as page flipping), if the driver supports it. Until now the functionality is only tested on Intel graphics. You need the drm-next kernel for most recent DRM kernel developments. As boot option set "i915.nuclear_pageflip". Additionally at the moment AMS is still hidden behind the environment variable KWIN_DRM_AMS. Set it, if you want to try out AMS. What needs to be done next: Make it possible to transfer EGL buffers directly to planes and implement logic for deciding about using a plane or not for a specific buffer. You can read more about it on LWN: https://lwn.net/Articles/653071 And on Martin's blog: https://blog.martin-graesslin.com/blog/2015/08/layered-compositing/ I used as model previous work by Daniel Stone for Weston: https://git.collabora.com/cgit/user/daniels/weston.git Reviewed-by: mgraesslin Tags: #kwin Differential Revision: https://phabricator.kde.org/D2370
51 lines
1.2 KiB
C++
51 lines
1.2 KiB
C++
/********************************************************************
|
|
KWin - the KDE window manager
|
|
This file is part of the KDE project.
|
|
|
|
Copyright (C) 2016 Roman Gilg <subdiff@gmail.com>
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 2 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*********************************************************************/
|
|
#ifndef KWIN_DRM_OBJECT_CRTC_H
|
|
#define KWIN_DRM_OBJECT_CRTC_H
|
|
|
|
#include "drm_object.h"
|
|
|
|
namespace KWin
|
|
{
|
|
|
|
class DrmBuffer;
|
|
|
|
class DrmCrtc : public DrmObject
|
|
{
|
|
public:
|
|
DrmCrtc(uint32_t crtc_id, int fd);
|
|
|
|
virtual ~DrmCrtc();
|
|
|
|
bool init();
|
|
|
|
enum class PropertyIndex {
|
|
ModeId = 0,
|
|
Active,
|
|
Count
|
|
};
|
|
|
|
bool initProps();
|
|
};
|
|
|
|
}
|
|
|
|
#endif
|
|
|