Amazing stuff has been landing left and right every day this week! Of course, it can be tweaked in the KDE System Settings – your mileage may vary. sleep 2s KDE compositing in openSUSE11.1 Submitted by Lubos Lunak As you might have noticed, KDE 4.1.3 has been released , codename "Change" (in line with other C- codenames recently, as a kind of a joke on all those people who fail to see that still writing comments with overuse of K after 10 years of KDE's existence can only be a sign of brain damage). KDE is an international and diverse technology team creating user-friendly free and open source software for desktop and portable computing. if OpenGL 2 is not available OpenGL 1 is used. According to Martin's blog post, they are looking at OpenGL 3.0 to provide the compositing effects in KDE SC 4.7. Linux kernel version: 3.0 The nvnews.net forum has some error reports like mine – but they (nvidia) never admit that the problem is real , (using opensuse 11.3 64bit, Dell D630 notebook with intel dual core, 4GB ram, ocz vertex2 ssd). E.g. nvidia |. I have been also feeling your pain too :-). Present Windows on Netbook Shell) They add shadow and depth to your applications. Composite effects are stunning on KDE. KWin does nowhere log which backend is really used, but there are some messages printed to stdout which can help recognizing the version. no as we don’t know that. As far as I know from your previous posts you are testing the OpenGL 2 ES mode on a nvidia based machine. I was a little bit depressed after see my composite performance descend because of the OpenGL 2.0 backend, and reading that I could enable the old 1.X based made my day :)! According to Martin's blog post, they are looking at OpenGL 3.0 to provide the compositing effects in KDE SC 4.7. The Composited mode can be re-enabled through the same shortcut. For others, a lack of window compositing is probably one of the main reason people go back to heavier desktop environments like KDE and Gnome. Instead of GLX we use EGL and the EGL_KHR_image_pixmap to bind an XPixmap (window content) to an OpenGL texture. Now this is where Compton will make a significant difference to performance. Will it be fixed with the new modes in KDE4.7? Kubuntu 14.04, KDE 4, HD5770, no flickering. But that’s exactly why I say that the benchmark has a systematic error. SPOILER ALERT: Scroll down and watch the video tutorial at the end of this article. Until you define some alpha channel data using an Alpha Manipulation Effect or a Wipe File, changes in the Composite transition settings will have no visible effect. I noticed the driver always reported the RAM with 512MB instead of the 256MB for my gfx. The programmable pipeline is a way nicer API to write GL code and especially the ES code can benefit users as it throws out all the legacy code and state tracking, which is rather complex in OpenGL and should ensure better drivers. You need to change it to 99% to make the effect kick in. Also at runtime self checks may disable compositing and also applications can block compositing bringing KWin into this mode. radeon | No Compositing. 60.8k When compared to Affine, the Composite transition, it does not support rotation or skewing but it is much faster, albeit at the cost of luma bleed. Furthermore there is an option to enforce this mode in the Advanced Desktop Effect settings: uncheck option “Use OpenGL 2 Shaders”. I tried kwin 4.7 (beta 1) yesterday on my laptop, with a nvidia Quadro FX770 (same as a GeForce 9600M GT) and the closed source drivers (275.09). The clip with alpha information is located on the top track: the selected color acquires transparency. This is no longer possible. Especially when another window is openend. As you seem to be an KDE expert: Do you know about this problem? Reply Quote 1. Aspirational goal - a compositing experiment made using detonation films free sample effects. Show your love for KDE! Lately I noticed that there is some misunderstanding on what are the differences between the modes, why we wrote new code and what is the best mode for whom (at least one distribution did it wrong in their first packaging approach). of course we know about it and what might help is using graphicssystem raster with 4.7. For informations with a Dell Precision M4600, openSUSE Factory, KDE 4.7, OpenGL vendor string: NVIDIA Corporation Gwen-Dragon Moderator last edited by @hstoellinger. However, in my testing, I have observed that this only disables again after closing the application. Alternatively, for a more minimal Plasma installation, install the plasma-desktop package.To enable support for Wayland in Plasma, also install the plasma-wayland-session package. {{#ev:youtube|vo-xntF1bns}}. X server version: 1.9.3 OpenGL shading language version string: 4.10 NVIDIA via Cg compiler There are minor details like an “ES” in the OpenGL ES case. For differences between plasma-meta and plasma reference Package group. nvidia-settings -a PixmapCache=0 This mode can be entered at all time by the Shortcut Alt+Shift+F12 and in the General Desktop Effects settings through option “Enable desktop effects at startup”. This looks for OpenGL like this: There are several reasons why I started to work on the OpenGL 2/OpenGL ES 2.0 backend. It’s responsible for any fancy effects like drop-shadows, as well drawing windows while dragging, resizing and minimizing or maximizing them. Recognizing XRender is even more difficult. Even disabling the KDE desktop effects doesn’t help, but telling the nvidia driver to clean it’s cache helps. Scroll through and uncheck the boxes next to all of the enabled effects and you should see a slight increase in speed and performance. …which has most likely a systematic error as can be seen in the discussion thread to the benchmark. Let’s hope that 2.X support/performance will improve in the incoming intel drivers. This transition is used in combination with Alpha Channel information supplied by one of the Alpha Manipulation Effects or by the use of a Wipe File. :)))). To my knowledge only the Gallium radeon and nouveau drivers support it at the moment. KDE. 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. This transition is used in combination with Alpha Channel information supplied by one of the Alpha Manipulation Effects or by the use of a Wipe File. The Composite transition combines the video data from two video tracks into one. The performance depends on settings which are different between KWin and Compiz and in 4.7 we changed the default, so we behave like Compiz. Top. intel (mesa 7.10 )| This can be quite tricky, because KWin automatically falls back to a different backend if one fails. Some highlights are touch support in Dolphin, user-configurable per-view sort ordering in Elisa, optional Systemd startup,… Perhaps also which backend is recommended for each driver. KWin always prints out the used OpenGL version information. With this blog post I hope to shed light on the various modes. Overall it seems to be the blob’s fault as we neither can investigate it (it’s a blob so no debugging) and it’s not present with any other driver. There should be three messages for valid - then OpenGL 2 is used or at least one message on failure, then OpenGL 1 is used. It has worked now for more than an hour already! There are two many hardware/driver/Xorg/kernel combinations to say anything about it. 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. It can be selected in the advanced Desktop Effect settings in the dropdown “Compositing type”. Personally I test which backend is used by using functionality tests: the Cube Effect requires at least OpenGL and the Sphere and Cylinder effects require at least OpenGL 2. Under Workspace Appearance and Behavior, click “Desktop Effects”. run kwin with KWIN_DIRECT_GL=1, but it’s no joy doing so. The clip with alpha information is located on the bottom track: we see only the top clip. Thanks for the hint! Compared to KDE’s native compositor, there was a substantial increase in speed and responsiveness. The default compositor for versions up until 16.04 was Compiz. Read the section to OpenGL 2 and think again. And I think my experience is not of interest to anyone as it is not representative. intel (mesa 7.11 )| Screenshot of Composite transition using a custom wipe file to mask out a section of video - as described in Tutorial 3. Something like: My Arch KDE, with Plasma 5.20.2 atm, & compositing always On [we must haves our desktop effects, my precccccioussssssssss] set for. Open “System Settings” from the K-menu or press Alt+F2 and type “System Settings”. Simply alt-tabbing out does not re-enable compositing like on GNOME 3. The XRender backend can only provide 2D animations, so e.g. Two new window types _KDE_WM_WINDOW_TYPE_WIDGET and _KDE_WM_WINDOW_TYPE_DASHBOARD might be useful Global Shortcuts could be blocked when dashboard is active if there is a window type Wallpaper could be used in effects currently showing black background (e.g. However, because Gnome based Ubuntu systems have been making drastic changes to their compositors for the last few years that forks into two answers: 16.04 with Unity/Compiz. Well i don know, i posted it in a comment beacuse it has kde+kwin in the comparation, the results seem good to KDE. Many apps require compositing for proper working. Software Rasterizer). It’s primary target are mobile devices (Plasma Active), but also on the desktop it is very important as it is the requirement for supporting Wayland. Check the “Enable desktop effects” box. Like OpenGL 2.x it uses the programmable pipeline and shaders written in GLSL. XRender is a completely different backend. OpenGL 3.0 provides support for frame buffer objects, hardware instancing, vertex array objects, and sRGB framebuffers." Docky. FYI, Fedora ships (only) r600g, not r600 Classic, so the debugging output even in GLX mode will look very similar, if not identical, to your OpenGL ES one. KWin also supports no compositing at all. Well… It uses only the so-called programmable pipeline or also known as the “core” profile. Thank you very much for the clarification. >but telling the nvidia driver to clean it’s cache helps. GPU class: Unknown If you cannot check the box and it tells you that it could not be enabled, KDE may have your graphics card on its black list. Alpha operation options are Over, And, Or and Xor, Operation Or clears any alpha information. Would it be possible with a follow-up post listing which drivers support which backends? how do you do that? One of the first systems with a compositing windowing system was the Commodore Amiga, released in 1985. Not really a backend, but also a mode which has to be mentioned. Is it nvidias fault? xfwm4 + compositing uses the Window Manager Tweaks program (others do not), where you can still use the other tweaks available, and turn off compositing in the Compositor tab. This is our default compositing backend. Purchase books, mugs, apparel, and more to support KDE. nvidia-settings -a PixmapCache=1. GLSL version: 4.10 Some of those effects you enjoy from KWin are available in other compositing engines. Without that, my system becomes unusable within half a day. 1 Reply Last reply . Sliding down Yakuake is also stuttering. So the old code would simply not compile against the libraries and that’s why it is a compile time option. In KDE environment when you go to Desktop Effects and in the Advanced tab there is an option named "Compositing type" which can be set to OpenGl or XRenderer. I frequently run the following script to clean up the caches: The Composite transition combines the video data from two video tracks into one. Effects requering shaders may provide a shader using the ARB Shader extension which can be used only in this mode. The legacy backend is used automatically for all drivers not supporting at least OpenGL 2.0 and the fglrx driver. Among the Wayland work in Plasma 5.20 includes Klipper support and middle-click paste, mouse and touchpad support nearly on … It would appear that you need to stop and restart Kdenlive in order for it to pick up new matte/wipe files saved in the above directory. I have massive slow downs in KDE4 (a lot of different nvidia binary drivers tested – and always using the latest KDE). https://bugs.kde.org/show_bug.cgi?id=273697 Furthermore it is used as a fallback when the OpenGL backend fails in an expected way (e.g. This is the backend for the future. The Amiga windowing system would then use a series of bit blits using the system's hardware blitter to build a composite of these applications' bitmaps - along with buttons and sliders - in display memory, without requiring these applications to redraw any of their bitmaps. ... Thats explicitly stated in KDE, with a disable in fullscreen option. For rendering we use only shaders written in the OpenGL Shading Language (GLSL) without making use of any fixed-functionality emulation code. the debug output I showed is wih r600g. In fact the OpenGL ES 2.0 and OpenGL 2.x backend are identical to more than ~ 95 %. I think this was the test I vaguely remembered. Also you can disable some of KDE features like compositing, akonadi if those are the things you do not need. Top. https://bugs.kde.org/show_bug.cgi?id=273697, Links 31/5/2011: Linaro Milestones, Ricoh Makes Linux Tablets | Techrights. Performance on the backend depends on the driver, but can be rather fair (I once did not notice that the XRender backend was used in a virtual machine). No not likely, for what the benchmark tested, I expect that KWin 4.7 would do worse. This Alpha Channel data describes how the data from the two video tracks should be combined. The Compositor tries to choose the best available settings for your GPU by querying the driver for what the hardware supports. richyrich Level 19 Posts: 9056 But as we do not make use of anything provided by OpenGL 3, there is no need for this. KDE 4.0.5 Changelog : KDE.org Changes in KDE 4.0.5 kdelibs[ all SVN changes ] klauncher Bugfixes: Remove reading of X … KDE is an international and diverse technology team creating user-friendly free and open source software for desktop and portable computing. Compositing in KDE SC 4.6 should be much faster, support mobile rendering using OpenGL ES 1.1/2.0, and potentially offer a stable ABI. OpenGL version: 4.1 The KDE Project released today KDE Plasma 5.20.2 as the second maintenance update to the latest KDE Plasma 5.20 desktop environment series to address more bugs. The clip with alpha information is located on the top track: everything in the image becomes transparent, except for the selected color. The code uses only fixed functionality. I am back to the blob on my nvidia system. This tutorial uses the Composite transition and a custom video mask (a.k.a. 50.4k This Alpha Channel data describes how the data from the two video tracks should be combined. Content is available under, Tutorial 2 - composite transition and Blue Screen, https://userbase.kde.org/index.php?title=Kdenlive/Manual/Transitions/Composite&oldid=455450. When you try a new distro it’s hard to distinguish between “it has virtualbox/vmware/whatever extensions already built-in” and “it’s using Xrender. The other effects are fine. For the next release cycle I hope to make it a runtime option. Save your mattes to /usr/share/kdenlive/lumas. For the interaction with the underlying graphics system we use GLX and the extensions for compositing.

compositing in kde

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