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Intel Linux OpenGL Driver Remains Slower Than Windows

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  • Intel Linux OpenGL Driver Remains Slower Than Windows

    Phoronix: Intel Linux OpenGL Driver Remains Slower Than Windows

    Recently there was the NVIDIA graphics comparison under Windows 7 and Linux providing new data at how the cross-platform NVIDIA driver is comparing between Ubuntu 12.10, Kubuntu 12.10, and Windows 7 Pro. Aside from Ubuntu's Unity desktop with Compiz impairing the performance, the results were competitive. Next up now is a look at Intel Sandy Bridge and Intel Ivy Bridge graphics when comparing the performance of the three operating systems.

    http://www.phoronix.com/vr.php?view=17920

  • #2
    The nexuiz result is quite surprising. Are you using S3TC with mesa driver?

    Comment


    • #3
      You should upgrade the test

      For Unigine Heaven there is just the Windows 7 numbers since the Intel Linux support for this more demanding game engine isn't in great shape on Mesa.
      I'm running UH3.0 without significant problems on 9.0 branch (last week) and mesa master. Yes, I need to run on medium shaders and no tesselation because of missing features, but it's far from unusable.

      Comment


      • #4
        Nice to hear, however it is not really surprising that linux is often slower than win - the driver does not share code between the os. That's differnt to fglrx/nvidia binary drivers.

        Comment


        • #5
          Originally posted by orome View Post
          I'm running UH3.0 without significant problems on 9.0 branch (last week) and mesa master. Yes, I need to run on medium shaders and no tesselation because of missing features, but it's far from unusable.
          I'm also curious what the issue is. I run Unigine Heaven rather frequently and it works for me. Note that you need to install the drirc that comes with Mesa: cp src/mesa/drivers/dri/common/drirc /etc/drirc # or ~/.drirc. (The intent is that distributions should do this for you...) This tells Mesa to work around a number of bugs in the Unigine demos: their use of extensions without asking for them, and their broken use of the GL_ARB_blend_func_extended extension. Without it, I believe you get cloudy grey rendering.

          There were a few Mesa bugs relating to Heaven as well, but those should have already been fixed in the version that Michael tested.
          Free Software Developer .:. Mesa and Xorg
          Opinions expressed in these forum posts are my own.

          Comment


          • #6
            Originally posted by enrico.tagliavini View Post
            The nexuiz result is quite surprising. Are you using S3TC with mesa driver?
            From http://openbenchmarking.org/system/1...012.10/glxinfo
            OpenGL extensions:
            <snip>
            GL_EXT_texture_compression_s3tc, GL_EXT_texture_env_combine,

            Comment


            • #7
              Composit

              Windows 7 : is Aero On?
              Kubuntu: kwin?
              Last edited by bofh80; 09-25-2012, 11:54 AM.

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              • #8
                The latest Windows driver for Intel is 15.​28.​0.​2792. Is there any reason You are not using this one?

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                • #9
                  I really wish they would work more on performance than features for Ubuntu.

                  Liam of www.gamingonlinux.com and www.linux4today.com

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                  • #10
                    Originally posted by Kayden View Post
                    This tells Mesa to work around a number of bugs in the Unigine demos: their use of extensions without asking for them, and their broken use of the GL_ARB_blend_func_extended extension. Without it, I believe you get cloudy grey rendering.

                    There were a few Mesa bugs relating to Heaven as well, but those should have already been fixed in the version that Michael tested.
                    Didn't they fix the bugs in Heaven? Or only some?

                    Certainly app workarounds in the gl lib are just wrong.

                    Comment


                    • #11
                      Nice progress Intel Looks like the performance gap between Windows and Linux is closing for these drivers.

                      Comment


                      • #12
                        Originally posted by curaga View Post
                        Didn't they fix the bugs in Heaven? Or only some?

                        Certainly app workarounds in the gl lib are just wrong.
                        Some, but not all, sadly.
                        Free Software Developer .:. Mesa and Xorg
                        Opinions expressed in these forum posts are my own.

                        Comment


                        • #13
                          Originally posted by phoronix View Post
                          Phoronix: Intel Linux OpenGL Driver Remains Slower Than Windows

                          Recently there was the NVIDIA graphics comparison under Windows 7 and Linux providing new data at how the cross-platform NVIDIA driver is comparing between Ubuntu 12.10, Kubuntu 12.10, and Windows 7 Pro. Aside from Ubuntu's Unity desktop with Compiz impairing the performance, the results were competitive. Next up now is a look at Intel Sandy Bridge and Intel Ivy Bridge graphics when comparing the performance of the three operating systems.

                          http://www.phoronix.com/vr.php?view=17920

                          Come on, Michael. You're including Kubuntu, but not the new Gnome Shell spin? By using defaults, GS has been the fastest of the major desktops, and since you are looking at performance, that seems something worth looking at.

                          Comment


                          • #14
                            Originally posted by curaga View Post
                            Didn't they fix the bugs in Heaven? Or only some?

                            Certainly app workarounds in the gl lib are just wrong.
                            They fixed many in Heaven 3.0 so that it runs quite nice (visually) on radeon OSS. But Sanctuary and Tropics was not updated in recent years so they are quite broken.

                            Comment


                            • #15
                              Originally posted by aceman View Post
                              They fixed many in Heaven 3.0 so that it runs quite nice (visually) on radeon OSS. But Sanctuary and Tropics was not updated in recent years so they are quite broken.
                              I still get very dark rendering and syntax errors in shaders without drirc. That's UH3.0 on SNB. I guess other mesa drivers are the same or worse as shader compiler is mostly shared.

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