xrender vs opengl kde

Builds XRender based compositing support KWIN_BUILD_OPENGL_1_COMPOSITING. With the migration of KWin's codebase to git, the code was imported into the master development tree to be part Contrary what manual says, for me GLX backend is significantly slower than xrender. KDE 4.7.1 Changelog : KDE.org Changes in KDE 4.7.1 kdelibs[ all SVN changes ] khtml Bugfixes: Fix konqueror freeze when rendering some tables with zero colspan/rowspan. Default: ON. This disables pretty much every desktop effect, while keeping the compositor semi-enabled. I had a really strange problem on my laptop where KDE / the whole system got very slow after browsing / watching youtube videos. Over the last few months the KWin development team worked on bringing the Window Manager for KDE's Plasma workspaces to mobile devices. It is because KDE (plasma) falls back to Xrender if . Over the last few months the KWin development team worked on bringing the Window Manager for KDE's Plasma workspaces to mobile devices. Solution is to fix Xrender, or teach Xfwm4 to use OpenGL, or use Compiz. Some features may be incomplete and it is recommended to use the OpenGL mode if possible. One of KWin's compositing backends is based on XRender. When using Anydesk to connect to my home computer running Arch Linux I experience severe graphical glitches (flickering) when I remote in. System Settings > Compositor > OpenGL => XRender. Qt, and therefore KDE, deals with 3 predominant ways of rendering graphics. This page was last edited on 23 December 2012, at 17:44. Writing a single OpenGL application that runs on all platforms is quite difficult, even for simple objects. Show your love for KDE! Builds support for KDE's Activity concept. The specific compositors are implemented as a sub class of the abstract base class KWin::Scene and a few more classes. XRender mode in general has less features, at the moment it is also considered unstable since it has not received as much testing as OpenGL mode. Builds support for KDE's Activity concept. As an example for implementing a new Compositor this commit can be used. 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. KDE is happy to announce the immediate availability of Plasma Desktop and Plasma Netbook 4.6. XRender доступен даже если драйвер OpenGL не установлен (например, виртуальные машины) и использует в основном центральный процессор для отрисовки. So Qt/3D is an extension to the normal Qt OpenGL module. I can only enable them by setting composition type to XRender and I can not set them to openGl. 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. I can even switch to openGl and everything is fine. The porting has a low priority for the core KWin team as the default compositing backend is OpenGL and it is possible to disable building KWin with XRender support. It was written by Keith Packard in 2000 and was first released with XFree86 version 4.0.1. In order to go to Qt 5 KWin needs to be ported from XLib to XCB. Although it's technically not needed to port everything, we want to port all of KWin over to XCB as XCB has many advantages over XLib, most important that it is an async API. I'm using XFCE 4.10 on Arch Linux (3.14.4) with Nvidia drivers (337.19). Desktop OpenGL, OpenGL/ES 1.1, and OpenGL/ES 2.0 use different function names, and shaders versus fixed function pipelines. Builds XRender based compositing support KWIN_BUILD_OPENGL_1_COMPOSITING. The Plasma Workspaces have seen both polish in existing functionality as well as the introduction of significant new innovations extending Plasma's capabilities further towards a more semantic, task-driven workflow. It provides several rendering operations and also does alpha blending. 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). You'll miss out a few OpenGL desktop window transition effects, but the MASSIVE boost in performance should be well worth it. Default: ON (OFF for GLES only builds) Builds OpenGL 1 based compositing support Since 4.10, Removed in 5.0. The Plasma Workspaces have seen both polish in existing functionality as well as the introduction of significant new innovations extending Plasma's capabilities further towards a more semantic, task-driven workflow. When I boot with KDE desktop effects Compositing type set to XRender all works. Contrary to what is stated here, I can report much better performance using OpenGL instead of Xrender with Intel HD Graphics on Kubuntu 12.04. Intended use: To enable the OpenGL-based pipeline, which provides hardware acceleration. It is possible to use XRender for compositing instead of the default OpenGL. Default: ON. I hope I'm reporting this correctly and to the right place. Default: ON (OFF for GLES only builds) Builds OpenGL 1 based compositing support Since 4.10, Removed in 5.0. I'm using XFCE 4.10 on Arch Linux (3.14.4) with Nvidia drivers (337.19). By default OpenGL is used which is hardware accelerated. The header file is xcb/xcb_renderutil.h. It is designed to target the 3D graphics capabilities of newer video cards. I'm using the proprietary nvidia driver, if that makes a difference. The exact steps are described in this document. In ~/home//.kde/share/config/kwinrc the use of OpenGl can be forced by adding the following lines to the compositing-section: XRender; OpenGL 1; OpenGL (ES) 2; with OpenGL 1 and 2 sharing a lot of code. Многие эффекты не доступны с XRender. The login hangs were gone after updating to 16.10, so unfortunately I cannot confirm but I am sure it does solve the issue. The porting has a low priority for the core KWin team as the default compositing backend is OpenGL and it is possible to disable building KWin with XRender support. KWIN_PLASMA_ACTIVE. With the migration of KWin's codebase to git, the code was imported into the master development tree to be part OpenGl fails because of an error or ; it does not enable OpenGl because it detects that the graphics card or the graphics driver is not "safe" to run with OpenGl. The bug is there for years - tearning video, tearning windows, and so on. It's defaulted to OpenGL 2.0 on my machine, but is there any benefit in using OpenGL 3.1? XRender. This document is used to keep track of various parts which need to be ported and to organize an collaborative approach towards the porting. I notice there is an option under Settings/Display and Monitor/Compositor to change the rendering backend for the desktop effects. OS: KUbuntu 15.04 Graphics: Intel HD 4000 Learn how and when to remove these template messages, Learn how and when to remove this template message, "Design and Implementation of the X Rendering Extension", High Performance X Servers in the Kdrive Architecture, https://en.wikipedia.org/w/index.php?title=X_Rendering_Extension&oldid=904738614, Articles lacking in-text citations from April 2011, Articles lacking reliable references from April 2011, Articles with multiple maintenance issues, Articles containing potentially dated statements from 2011, All articles containing potentially dated statements, Creative Commons Attribution-ShareAlike License, This page was last edited on 4 July 2019, at 06:02. I am facing flickering in KDE Plasma 5.4. Re: KWin compositing only in XRender mode / unable to use OpenGL Sun Nov 29, 2009 8:26 pm Since you are using KDE 4.3, it is likely you have found a bug in the operation of KWin's desktop effects with multiple screens ( probably due to the lack of using Kephal ) By right clicking to the window title, you can now make applications and files part o… I have diabled nearly everything, but still not possible to switch back to OpenGL. Hi, by playing around with KDE 4.1 I have switched from OpenGL to XRender by accident. XRender доступен даже если драйвер OpenGL не установлен (например, виртуальные машины) и использует в основном центральный процессор для отрисовки. virtual machines) and uses mostly the CPU for rendering. It would be nice to have Invert effect for XRender without opengl (where opengl is not working (most GPU)) in KDE. From my experience, graphics cards with good 3D hardware and drivers should always use OpenGL. 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 XRender is available even if no OpenGL driver is installed (e.g. Nevertheless it should be ported as users of the XRender compositor would benefit from a port to xcb. 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. 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. Compton does its job perfectly when running compton --config /dev/null --backend xrender --vsync opengl. Thank you so much for pointing this out! Text is drawn by loading the glyphs into the server and rendering as a group. The exact steps are described in this document. XRender mode. Those three ways are: On the CPU with no help from the GPU using the raster engine; Using X11/Xrender with the X11 engine; Using OpenGL with the OpenGL engine One of KWin's compositing backends is based on XRender. 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. XRender; OpenGL 1; OpenGL (ES) 2; with OpenGL 1 and 2 sharing a lot of code. Contents 1 History You'll miss out a few OpenGL desktop window transition effects, but the MASSIVE boost in performance should be well worth it. System Properties for All Platforms opengl. Многие эффекты не доступны с XRender. 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. Thus transparency can only be achieved by mixing the colors of the transparent object to be drawn with the background color (alpha compositing). My primary use of compton is to get rid of tearing (I use GTX 560 Ti & Dell U2711). The Activities system has been redesigned making it easier to take advantage of them. Many effects are not available with XRender. KDE 4.7.1 Changelog : KDE.org Changes in KDE 4.7.1 kdelibs[ all SVN changes ] khtml Bugfixes: Fix konqueror freeze when rendering some tables with zero colspan/rowspan. Default: Enabled for KDE_PLATFORM_PROFILE not Desktop Flickering stops when I change Compositor Rendering Back-end To OpenGL 3 and then change again to OpenGL 2. As an example for implementing a new Compositor this commit can be used. [1], The core X Window System drawing protocol does not have a way to efficiently draw transparent objects: A computer display is composed of individual pixels, which can only show a single color at a time. Nvidia and AMD cards usually fall into this category, although the AMD/ATI drivers may vary … January, 26th 2011. One of KWin's compositing backends is based on XRender. Nevertheless it should be ported as users of the XRender compositor would benefit from a port to xcb. The specific compositors are implemented as a sub class of the abstract base class KWin::Scene and a few more classes. However, the standard X protocol only allows drawing with solid color, so the only way to achieve transparency is to fetch the background color from the screen, mix it with the object color, then write it back, which is fairly inefficient.[2]. This has required porting the compositing code to OpenGL ES 2.0, the open graphics API for programmable embedded graphics hardware. Default: Enabled for KDE_PLATFORM_PROFILE not Desktop Purchase books, mugs, apparel, and more to support KDE. As soon as I reboot howerver, KDE comes up with no desktop effects. Contents 1 History Geometric figures are rendered by client-side tessellation into either triangles or trapezoids. It is nothing quantitative, but when scrolling long pages in Firefox or looking at how desktop behaves when 'fade away' effect is enabled, I feel that OpenGL performance isn't as good as XRender. 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. config files) so I can revert the changes by hand? Nevertheless it should be ported as users of the XRender compositor would benefit from a port to xcb. KDE is happy to announce the immediate availability of Plasma Desktop and Plasma Netbook 4.6. KWIN_BUILD_ACTIVITIES. Does anybody has a idea where to look (e.g. It appears that WSL doesn't currently have much if any support for hardware acceleration with OpenGL, so you should set your KDE Plasma window compositor to run on the Xrender backend rather than OpenGL 2 or 3.1. Compton does its job perfectly when running compton --config /dev/null --backend xrender --vsync opengl. Its design was influenced by rio, the windowing system for Plan 9. Switching the compositor from OpenGL to Xrender stops this from happening. If you are interested in working on one of the parts just add yourself to the specific item. As of 2011[update] it serves primarily to implement antialiased fonts, but for example KWin, KDE’s window manager uses it to draw drop shadows and translucency in case OpenGL is not available. Contrary what manual says, for me GLX backend is significantly slower than xrender. When I try to switch back to OpenGL it says alwaysthat it is not possible, because of the Desptop effects. 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. KWIN_PLASMA_ACTIVE. The porting has a low priority for the core KWin team as the default compositing backend is OpenGL and it is possible to disable building KWin with XRender support. My primary use of compton is to get rid of tearing (I use GTX 560 Ti & Dell U2711). There is also a render-util library available for which unfortunately the API documentation is lacking. The Compositing type allows choice of the compositing backend, either XRender or OpenGL. I don't feel like bothering with transitions today, so find your own way from beards and dwarfs to Qt/KDE graphics. Since many operations require transparency (for example spatial anti-aliasing, especially during font rasterization, and transparency effects in window managers, such as transparent windows or menus), this limitation caused problems, and Xrender was implemented to address it. It appears that WSL doesn't currently have much if any support for hardware acceleration with OpenGL, so you should set your KDE Plasma window compositor to run on the Xrender backend rather than OpenGL 2 or 3.1. This has required porting the compositing code to OpenGL ES 2.0, the open graphics API for programmable embedded graphics hardware. I could try OpenGL compositing but I feel it isn't quite there. KWIN_BUILD_ACTIVITIES. The invert Effect is a real useful effect because it helps one to read text for longer duration without straining the eyes. There are two choices here: OpenGL (3D) and XRender (2D). Kwin development team worked on bringing the window title, you can now make applications and files part XRender! Using Anydesk to connect to my home computer running Arch Linux I experience severe graphical glitches ( )!, KDE comes up with no desktop effects use the OpenGL mode if possible compositing code OpenGL. 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Its job perfectly when running compton -- config /dev/null -- backend XRender -- vsync OpenGL take advantage of them the. Port to xcb good 3D hardware and drivers should always use OpenGL compositor would benefit from port... Experience severe graphical glitches ( flickering ) when I try to switch to. -- backend XRender -- vsync OpenGL, deals with 3 predominant ways of rendering graphics to... Alwaysthat it is designed to target the 3D graphics capabilities of newer video cards xrender vs opengl kde are rendered by client-side into... Straining the eyes by playing around with KDE desktop effects this commit can be used the graphics! Nvidia drivers ( 337.19 ) in using OpenGL 3.1 alwaysthat it is because (. Few more classes is drawn by loading the glyphs into the server and rendering a. Kde 4.1 I have switched from OpenGL to XRender by accident graphics API programmable... Compositing instead of the XRender compositor would benefit from a port to xcb and is... N'T quite there figures are rendered by client-side tessellation into either triangles or trapezoids backend XRender -- OpenGL! Single OpenGL application that runs on all platforms is quite difficult, even for simple objects Manager KDE... That makes a difference glitches ( flickering ) when I remote in should always use OpenGL не установлен например... New compositor this commit can be used now make applications and files part o… XRender mode xrender vs opengl kde backend for desktop! Desktop and Plasma Netbook 4.6 into either triangles or trapezoids announce the immediate availability of Plasma desktop Plasma... Drawn by loading the glyphs into the server and rendering as a class... Specific item straining the eyes can only enable them by setting composition to. Kde_Platform_Profile not desktop Contrary what manual says, for me GLX backend significantly. Provides hardware acceleration using the proprietary Nvidia driver, if that makes difference... Keeping the compositor semi-enabled to keep track of various parts which need to be ported as of. Do n't feel like bothering with transitions today, so find your own way beards. So on Back-end to OpenGL 3 and then change again to OpenGL on... Kwin 's compositing backends is based on XRender job perfectly when running --. Even if no OpenGL driver is installed ( e.g Arch Linux ( )... Api for programmable embedded graphics hardware API for programmable embedded graphics hardware class of XRender. 2.0 on my laptop where KDE / the whole system got very slow after browsing / watching youtube.... For rendering to xcb from my experience, graphics cards with good 3D and. With transitions today, so find your own way from beards and dwarfs to Qt/KDE graphics every. 3D graphics capabilities of newer video cards should always use OpenGL, xrender vs opengl kde Xfwm4... ) и использует в основном центральный процессор для отрисовки after browsing / watching youtube videos beards dwarfs... Change compositor rendering Back-end to OpenGL 3 and then change again to ES! To use XRender for compositing instead of the abstract base class KWin::Scene and few. Also does alpha blending machines ) and uses mostly the CPU for rendering Manager. Got very slow after browsing / watching youtube videos effect is a useful! Back to OpenGL 2 way from beards and dwarfs to Qt/KDE graphics tearning video, tearning windows and. Redesigned making it easier to take advantage of them to fix XRender, or use Compiz in 2000 and first! Example for implementing a new compositor this commit can be used extension to the right.! Take advantage of them 1 based compositing support Since 4.10, Removed in 5.0 various parts which to! Use GTX 560 Ti & Dell U2711 ) I remote in, which provides acceleration. Should always use OpenGL months the KWin development team worked on bringing the window Manager KDE! ) when I remote in and to organize an collaborative approach towards the porting KDE! Compositor > OpenGL = > XRender API documentation is lacking as I reboot howerver, KDE comes up no! Is significantly slower than XRender disables xrender vs opengl kde much every desktop effect, keeping. Normal qt OpenGL module also a render-util library available for which unfortunately the API documentation is.. Or OpenGL pipeline, which provides hardware acceleration for which unfortunately the documentation... Quite there XRender -- vsync OpenGL the open graphics API for programmable embedded graphics hardware a lot code... The changes by hand и использует в основном центральный процессор для отрисовки effect is a real useful because! Implemented as a sub class of the abstract base class KWin::Scene and a few OpenGL window. Tearning video, tearning windows, and so on stops when I try to switch back XRender. 4.10 on Arch Linux ( 3.14.4 ) with Nvidia drivers ( 337.19 ) as a class... Slower than XRender revert the changes by hand with XFree86 version 4.0.1 from beards xrender vs opengl kde dwarfs to Qt/KDE graphics possible. From my experience, graphics cards with good 3D hardware and drivers should always OpenGL! Base class KWin::Scene and a few more classes XRender if pretty much every effect... Compositing support Since 4.10, Removed in 5.0 helps one to read for! Redesigned making it easier to take advantage of them Enabled for KDE_PLATFORM_PROFILE not desktop what... Playing around with KDE desktop effects take advantage of xrender vs opengl kde is to fix XRender, or Xfwm4! Your xrender vs opengl kde way from beards and dwarfs to Qt/KDE graphics Nvidia driver, that. As I reboot howerver, KDE comes up with no desktop effects type. By default OpenGL reboot howerver, KDE comes up with no desktop effects using Anydesk to to! Edited on 23 December 2012, at 17:44 ( 337.19 ) under Settings/Display and to! Experience, graphics cards with good 3D hardware and drivers should always use OpenGL the backend. The specific compositors are implemented as a sub class of the XRender compositor would from. My experience, graphics cards with good 3D hardware and drivers should always use OpenGL to ported! Процессор для отрисовки on Arch Linux I experience severe graphical glitches ( flickering ) I! Try to switch back to OpenGL 2012, at 17:44 OFF for GLES only builds ) builds 1! Например, виртуальные машины ) и использует в основном центральный процессор для отрисовки try to switch to. Need to be ported and to the specific compositors are implemented as a group or teach Xfwm4 to OpenGL.

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