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OpenGL vs. Vulkan Performance For Portal 2 With Radeon Linux Graphics

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  • spyrou008
    replied
    Thanks Michael for the Portal 2 benchmark , using the PTS3 demo file.
    FYI: I had to download and move the file manually.
    as my actual result was : Portal 2 is launched, and shows a screen with GLaDOS defeated. This screen stays for an unlimited time.
    The expected result is the demo automatically played , on one of the first levels of the game. this lasts around 3-4 minutes.

    I have nailed the issue down thanks to :
    phoronix-test-suite debug-install pts/portal2
    giving:
    ...
    [2021-05-07 16:53:58] Verifying installation...
    [2021-05-07 16:53:58] Verification complete
    [2021-05-07 16:54:20] Shutdown
    unzip: cannot find or open portal2-demo-pts3.zip, portal2-demo-pts3.zip.zip or portal2-demo-pts3.zip.ZIP.
    mv: cannot stat 'pts3.dem': No such file or directory
    Cheers all

    Leave a comment:


  • fulalas
    replied
    That's interesting. I tried -vulkan flag in 1080p on a Pentium G4560 + GTX 1650 Super + all settings at the maximum (except AA, which was set to 2x) and vsync off. Here's the result:
    Code:
    OpenGL: 265 FPS
    Vulkan: 135 FPS
    I used this demo in timedemo mode.

    Any ideas about what happened?
    Last edited by fulalas; 03 March 2021, 11:02 PM.

    Leave a comment:


  • Tom B
    replied
    Seeing this and similar benchmarks makes me wonder why Valheim runs much better on OpenGL than Vulkan. Vulkan should be a lot faster in theory.

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  • b15hop
    replied
    I'm seeing a few things with this article.
    • GPU's are behind CPU's by a considerable margin. Even low range CPU's seem to be maxing out a 3090 RTX in some games at high graphics settings. This also seems to be the case with AMD cards.
    • Vulkan seems to give big improvements with newer cards. Since newer cards are less of a bottleneck in the first place.
    • Games that take advantage of Vulkan sooner, will have greater longevity. Especially when GPU's become less of a bottleneck.
    Now if AMD better supports Vulkan in the long run, they may well have a clear advantage over Nvidia in future. It seems that the faster GPU's get, the more OpenGL bottlenecks the graphics pipeline. I could be wrong. Either way, it would be foolish not to take advantage of this amazing technology sooner than later.

    Leave a comment:


  • Calinou
    replied
    Originally posted by Brisse View Post
    Almost a thousand frames per second in some cases. Pretty sick. Try libstrangle, or v-sync
    Source games have a `fps_max` console command you can use to limit the frame rate, so you don't need libstrangle for that.

    Leave a comment:


  • philips
    replied
    Originally posted by doublez13 View Post

    Sick. Are there many games making use of the library?
    All the Metro games on Stadia and the upcoming Metro Exodus on Steam.

    Leave a comment:


  • MrCooper
    replied
    Originally posted by PublicNuisance View Post
    While most users with a high end video card won't see a ton of benefit from this I imagine users on Intel graphics or using an APU probably will.
    Integrated graphics setups are generally GPU limited, but as these numbers confirm once again, Vulkan mostly makes a difference in CPU limited scenarios.

    Leave a comment:


  • Brisse
    replied
    Originally posted by theriddick View Post
    Lots of people over on the windows echo-system are calling vulkan dead as a door-nail because of this.

    And no they don't know that its DXVK and are comparing it to DX11 which it translates from and see a %10-20 reduction in performance for vulkan, thus claim its a dead api...

    I do try to explain whats going on but you know how yt comments are, just a dark void everyone screams into most the time..
    Lol, just let them be. Ignorance is bliss.

    Leave a comment:


  • theriddick
    replied
    Lots of people over on the windows echo-system are calling vulkan dead as a door-nail because of this.

    And no they don't know that its DXVK and are comparing it to DX11 which it translates from and see a %10-20 reduction in performance for vulkan, thus claim its a dead api...

    I do try to explain whats going on but you know how yt comments are, just a dark void everyone screams into most the time..

    Leave a comment:


  • r1348
    replied
    Originally posted by bridgman View Post

    I think that makes sense - Vulkan doesn't necessarily give faster rendering, but it can reduce CPU overhead and make better use of more threads/cores.

    Once you get GPU-limited though, the API doesn't make as much difference.
    If anything, this benchmark is good at showing which hardware will limit you at which resolution.

    Leave a comment:

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