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Thread: Doom 3 Dante Engine Runs Faster With GLX Over EGL

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  1. #1
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    Default Doom 3 Dante Engine Runs Faster With GLX Over EGL

    Phoronix: Doom 3 Dante Engine Runs Faster With GLX Over EGL

    Oliver McFadden spoke on Wednesday during the X.Org Developers' Conference about Dante, his open-source project that's derived from id Software's released id Tech 4 code-base...

    http://www.phoronix.com/vr.php?view=MTE4ODM

  2. #2
    Join Date
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    At around 14:50 is he saying the performance loss is because of a vblank issue and that they should fixed it?

    Because of his pronunciation I didn't understand all he said.
    Last edited by mark45; 09-20-2012 at 05:56 AM.

  3. #3

    Default gDEBugger supports nVidia

    AMD's gDEBugger supports nVidia cards pretty well. There's no support for OpenCL kernel debugging, but everything else works fine.

  4. #4

    Default Doom 3 binary.

    With a low-latency kernel, I ran Doom 3 binary, extremely smooth at 72fps. Even with SSAA turned on etc. This was a few years ago, with 2x2.5ghz cpu, and an nvidia gtx280 card, I think.

    And that is quite a difference from standard ubuntu kernels, where people play with choppy frames. I can`t believe they bother with that, or that their kernel engineers don`t try to provide the best experience.

    Peace Be With You.

  5. #5
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    Quote Originally Posted by Paradox Uncreated View Post
    With a low-latency kernel, I ran Doom 3 binary, extremely smooth at 72fps. Even with SSAA turned on etc. This was a few years ago, with 2x2.5ghz cpu, and an nvidia gtx280 card, I think.

    And that is quite a difference from standard ubuntu kernels, where people play with choppy frames. I can`t believe they bother with that, or that their kernel engineers don`t try to provide the best experience.

    Peace Be With You.

    Every single post Michael has put up on low-latency kernals have shown that its equal or worse than the standard kernal.

  6. #6

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    In practise framerate is lower, and suffers from jitter. If you ever tried the standard ubuntu kernel, vs a well-configured low-latency kernel (and I don`t know if ubuntu low-latency kernels are that, I compile my own), you will notice the difference in smoothness. Standard ubuntu kernel, even shows larger jitter (dropped frames) on 30fps video! As I have said earlier, synthetic non-vsynced benchmarks, say nothing about user experience. Instead ofcourse vsynced benchmarks, at 72hz refresh rate (which also is optimal, for reasons descriped earlier), giving some idea of scene complexity, sustained at 72fps, and the jitter associated with it, would be much more useful.

    Peace Be With You.

  7. #7

    Default Uwaysis Low Latency Kernel

    You know what, I can boot into my linuxbox, and do a low-latency config on the latest kernel. I like to follow the developments on that anyway, and see if I can make a .deb of it, and everyone can install it, and compare.

    Low os-jitter operating system, is a special interest of mine. I will do a post on http://www.paradoxuncreated.com for those interested.

    Peace Be With You.

  8. #8
    Join Date
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    Quote Originally Posted by stativ View Post
    AMD's gDEBugger supports nVidia cards pretty well. There's no support for OpenCL kernel debugging, but everything else works fine.
    Interesting... Care to describe your system configuration? ( The easy way is to use the command "phoronix-test-suite system-info" )

  9. #9

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    Quote Originally Posted by Dandel View Post
    Interesting... Care to describe your system configuration? ( The easy way is to use the command "phoronix-test-suite system-info" )
    It's Arch Linux 64bit with nVidia 9600 GT using the proprietary blob (currently running 304.43 drivers*). There's nothing special about my system. It needed some small changes regarding the path to libGL and libCL (see the AUR package) though (it looks for them in lib64, which is not used on Arch).


    * However, it shouldn't depend on any specific version of drivers, because I've been using gDEBugger on nVidia since the last Christmas.

  10. #10

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    Quote Originally Posted by Dandel View Post
    Interesting... Care to describe your system configuration? ( The easy way is to use the command "phoronix-test-suite system-info" )
    Strange, I was sure I already replied to this.

    Anyway, I have nVidia 9600 GT on Arch Linux 64bit, using the proprietary drivers (right now 304.43, but it worked almost a year ago, too). There's nothing peculiar about my system. Oh, I almost forgot gDEBugger looks for libGL and libCL in lib64, which is not used on Arch, so it needs some small tweaks to make it find these libraries (it needs LIBGL_DRIVERS_PATH env variable and link for libCL, for details look at the the AUR package).

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