You'll miss out a few OpenGL desktop window transition effects, but the MASSIVE boost in performance should be well worth it. Compton does its job perfectly when running compton --config /dev/null --backend xrender --vsync opengl. I don't feel like bothering with transitions today, so find your own way from beards and dwarfs to Qt/KDE graphics. It provides several rendering operations and also does alpha blending. Nevertheless it should be ported as users of the XRender compositor would benefit from a port to xcb. I had a really strange problem on my laptop where KDE / the whole system got very slow after browsing / watching youtube videos. Tearing is caused by Xrender (which is used to composition in Xfwm4), which can't sync (I can't belive that, but it's true). Text is drawn by loading the glyphs into the server and rendering as a group. config files) so I can revert the changes by hand? Some features may be incomplete and it is recommended to use the OpenGL mode if possible. The X Rendering Extension (Render or XRender) is an extension to the X11 core protocol to implement image compositing in the X server, to allow an efficient display of transparent images. XRender is also used in some effects directly and this is actually a good task to work on as the code areas are small and easy to verify. My primary use of compton is to get rid of tearing (I use GTX 560 Ti & Dell U2711). Its design was influenced by rio, the windowing system for Plan 9. When using Anydesk to connect to my home computer running Arch Linux I experience severe graphical glitches (flickering) when I remote in. KDE is an open community of friendly people who want to create a world in which everyone has control over their digital life and enjoys freedom and privacy. This has required porting the compositing code to OpenGL ES 2.0, the open graphics API for programmable embedded graphics hardware. The exact steps are described in this document. By default OpenGL is used which is hardware accelerated. Nvidia and AMD cards usually fall into this category, although the AMD/ATI drivers may vary … KDE is happy to announce the immediate availability of Plasma Desktop and Plasma Netbook 4.6. This has required porting the compositing code to OpenGL ES 2.0, the open graphics API for programmable embedded graphics hardware. Solution is to fix Xrender, or teach Xfwm4 to use OpenGL, or use Compiz. Builds XRender based compositing support KWIN_BUILD_OPENGL_1_COMPOSITING. Hi, by playing around with KDE 4.1 I have switched from OpenGL to XRender by accident. Thank you so much for pointing this out! As an example for implementing a new Compositor this commit can be used. Contrary what manual says, for me GLX backend is significantly slower than xrender. Great hint regarding tearing - for me it already completely went away by switching from XRender to OpenGL 3.1, no other settings were needed :-) – Torsten Römer Jan 22 '17 at 18:31 Contents 1 History As soon as I reboot howerver, KDE comes up with no desktop effects. When I try to switch back to OpenGL it says alwaysthat it is not possible, because of the Desptop effects. Flickering stops when I change Compositor Rendering Back-end To OpenGL 3 and then change again to OpenGL 2. The X Rendering Extension (Render or XRender) is an extension to the X11 core protocol to implement image compositing in the X server, to allow an efficient display of transparent images. This disables pretty much every desktop effect, while keeping the compositor semi-enabled. Before starting to work on it, it might be a good idea to have a look at the X Rendering Extension Protocol Specification as the API is derived from the protocol description. Content is available under, X Rendering Extension Protocol Specification, https://community.kde.org/index.php?title=KWin/Xcb&oldid=28609, Note: in Qt 5 a QPixmap does no longer reference an X11 Pixmap. I'm using XFCE 4.10 on Arch Linux (3.14.4) with Nvidia drivers (337.19). I hope I'm reporting this correctly and to the right place. Многие эффекты не доступны с XRender. One of KWin's compositing backends is based on XRender. XRender доступен даже если драйвер OpenGL не установлен (например, виртуальные машины) и использует в основном центральный процессор для отрисовки.
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