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  • KDE SC 4.7.0 Officially Released

    Phoronix: KDE SC 4.7.0 Officially Released

    KDE SC 4.7.0 was officially released this afternoon...

    http://www.phoronix.com/vr.php?view=OTcyMg

  • #2
    OpenGL ES 2.0 support in the KWin compositing window manager
    I wonder if it's enabled by default for GL >= 2.1 desktops or do I have to do it manually?

    Comment


    • #3
      Originally posted by cl333r View Post
      I wonder if it's enabled by default for GL >= 2.1 desktops or do I have to do it manually?
      Short answer: you have to do it manually.

      Complete and detailed answer: http://blog.martin-graesslin.com/blo...opengl-es-2-0/

      Comment


      • #4
        ES seems to be useless with the open source r600g driver. KWin just crashes immediately.

        And regular OpenGL is slow as molasses :-D Amazing times for Linux desktops, yey! It feels as exciting as it was back 15 years ago. All hail the mighty Linux Desktop that is so much better than Windows 7 and OS X :-)

        Edit:
        Nah, I'm kidding. It just stinks.
        Last edited by RealNC; 07-27-2011, 07:00 PM.

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        • #5
          Originally posted by RealNC View Post
          ES seems to be useless with the open source r600g driver. KWin just crashes immediately.

          And regular OpenGL is slow as molasses :-D Amazing times for Linux desktops, yey! It feels as exciting as it was back 15 years ago. All hail the mighty Linux Desktop that is so much better than Windows 7 and OS X :-)

          Edit:
          Nah, I'm kidding. It just stinks.
          It's supposed to crash if you're using pre mesa 7.11 (devel) r600g drivers.

          Comment


          • #6
            You need to compile yourself (Kubuntu 11.10 will have extra packages ready) if you want OpenGL ES 2.0 which is the fastest option, otherwise it will just use OpenGL 2.0 which is still better than KDE SC 4.6. With KDE SC 4.8, it probably won't be necessary to have different packages/recompile for OpenGL ES 2.0.

            Also, if you have slow performance, try setting the graphicssystem of Qt to "raster". It will be the default in Qt 4.8 anyway.

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            • #7
              Kernel 3.0, Mesa Git master, xf86-video-ati Git master and "raster" with Qt 4.7.3. And it stinks.

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              • #8
                Originally posted by RealNC View Post
                Kernel 3.0, Mesa Git master, xf86-video-ati Git master and "raster" with Qt 4.7.3. And it stinks.
                So it's more kfail than kwin...

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                • #9
                  Fallbacks.

                  @RealNC: Resort to Plan B. KWin can degrade itself to compensate for poor drivers. If you have trouble, you can:
                  - Disable OpenGL 2.0 shaders: That will give you OpenGL 1 (pre-4.7 was OpenGL 1).
                  - Switch your rendering engine (Direct / Indirect rendering, Direct makes the driver render, Indirect makes X render. if Direct is slow, Indirect will cut)
                  - In extreme cases, switch from OpenGL to XRender. KWin can be fast and pretty with only plain EXA.

                  No other WM has this flexibility.

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                  • #10
                    Originally posted by RealNC View Post
                    Kernel 3.0, Mesa Git master, xf86-video-ati Git master and "raster" with Qt 4.7.3. And it stinks.
                    Which card do you have again? I seem to remember it was one of the slowest r600g cards.

                    Comment


                    • #11
                      Originally posted by smitty3268 View Post
                      Which card do you have again? I seem to remember it was one of the slowest r600g cards.
                      No, it's actually one of the fast flagship cards of that generation. HD4870. I have already tried every tweak mentioned here long ago. Nothing helps. KWin after KDE 4.5 was getting slower and slower. Disabling KDE's VSync in systemsettings and setting vblank_mode to 0 helped a bit, but not much.

                      KWin's performance in recent versions is really crappy on my system. I once tried Compiz with KDE, but the integration sucks.
                      Last edited by RealNC; 07-27-2011, 11:20 PM.

                      Comment


                      • #12
                        Originally posted by RealNC View Post
                        Kernel 3.0, Mesa Git master, xf86-video-ati Git master and "raster" with Qt 4.7.3. And it stinks.
                        KDE SC 4.7 recommends Qt 4.7.4 under "System Requirements".

                        http://kde.org/announcements/4.7/platform.php

                        System Requirements
                        In order to get the most out of these releases, we strongly recommend to use the latest version of Qt, as of today 4.7.4. This is necessary in order to assure a stable experience, as some improvements made to KDE software have actually been done in the underlying Qt framework.

                        In order to make full use of the capabilities of KDE's software, we also recommend to use the latest graphics drivers for your system, as this can improve the user experience substantially, both in optional functionality, and in overall performance and stability.
                        If you are having a poor experience, and you are unable to meet the system requirements of KDE SC 4.7, then the easiest interim solution might be to change the desktop rendering backend to Xrender.

                        For other readers, for some balance ... KDE SC 4.7 is a fantastic experience for some users:

                        http://blog.martin-graesslin.com/blo...opengl-es-2-0/

                        Thanks for driving my poor GeForce 6150 towards graphics nirvana. Blur works amazingly here, effects are smooth and I can still see my graphics chip throttling down to 100 MHz.

                        Thanks also for enabling me to use the Lanczos shader with my GeForce 8500 GT. I never saw that feature running so smoothly in a computer.

                        Now, with KDE 4.7, I can pump more effects, get more performance and, in some cases, use even less CPU than never before. Thank you, KWin performance in KDE 4.7 is, for the first time, GREAT.

                        Comment


                        • #13
                          Originally posted by hal2k1 View Post
                          KDE SC 4.7 recommends Qt 4.7.4 under "System Requirements".

                          http://kde.org/announcements/4.7/platform.php
                          There is no such thing right now. Latest version of Qt is 4.7.3.

                          If you are having a poor experience, and you are unable to meet the system requirements of KDE SC 4.7, then the easiest interim solution might be to change the desktop rendering backend to Xrender.
                          Xrender is much slower than what I currently have. So now I have slow, with Xrender I have super-slow. :-P

                          Comment


                          • #14
                            save yourself some pain, use the ati provided drivers.
                            the open source drivers are hit and miss.

                            i just wish ati would release an updated driver to support 10.04 '$ graphics stack.
                            for r300
                            Originally posted by RealNC View Post
                            No, it's actually one of the fast flagship cards of that generation. HD4870. I have already tried every tweak mentioned here long ago. Nothing helps. KWin after KDE 4.5 was getting slower and slower. Disabling KDE's VSync in systemsettings and setting vblank_mode to 0 helped a bit, but not much.

                            KWin's performance in recent versions is really crappy on my system. I once tried Compiz with KDE, but the integration sucks.

                            Comment


                            • #15
                              Originally posted by RealNC View Post
                              ES seems to be useless with the open source r600g driver. KWin just crashes immediately.
                              I didn't think GL ES support was built into the r600g driver by default, just regular GL support IIRC. Distros shipping KWin might be enabling GL ES in their builds, not sure.
                              Last edited by bridgman; 07-28-2011, 12:47 AM.

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