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Windows store universal app not using GPU

Discussion in 'Windows' started by elettrozero, Mar 21, 2017.

  1. elettrozero

    elettrozero

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    Hi,
    I deployed my game on my laptop and, contrary to desktop version, NVidia GPU des not display the game as using GPU features (hence low fps).

    Is there something I should set in player settings or build settings or anything else?

    Thanks to anyone who would help, the game is about to be released and we're facing this problem now.
     
    elettrozero, Mar 21, 2017
    #1

  2. Tautvydas-Zilys

    Tautvydas-Zilys

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    Hey are you on .NET or IL2CPP scripting backend?
     
    Tautvydas-Zilys, Mar 22, 2017
    #2

  3. elettrozero

    elettrozero

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    IL2CPP, should I switch to .NET?
     
    elettrozero, Mar 22, 2017
    #3

  4. Tautvydas-Zilys

    Tautvydas-Zilys

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    No, using IL2CPP actually makes it much easier. There's not a good way to achieve it on .NET.

    Put this piece code in one of the source files (I'd do it in Main.cpp, just above wWinMain) in the generated VS project:

    Code (csharp):
    1. extern "C"
    2. {
    3.     __declspec(dllexport) DWORD NvOptimusEnablement = 0x00000001;
    4.     __declspec(dllexport) int AmdPowerXpressRequestHighPerformance = 1;
    5. }
    That should make drivers default to dedicated GPU for your executable.
     
    Tautvydas-Zilys, Mar 22, 2017
    #4
    soleron and tswalk like this.

  5. elettrozero

    elettrozero

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    It works!! Can't wait to test it on Xbox One!!!

    Next time you're in Italy a free beer is for you :)
     
    elettrozero, Mar 22, 2017
    #5
    Tautvydas-Zilys likes this.

  6. elettrozero

    elettrozero

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    I'm integrating Xbox Live services in my game and the only way (that wouldn't drive me crazy) seems to be switching to .NET backend scripting.
    I'm building and about to check if it will need a trick as well to use GPU. In that case, would it be so hard to achive it?
     
    elettrozero, Apr 14, 2017
    #6

  7. Tautvydas-Zilys

    Tautvydas-Zilys

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    Which Unity version are you on? Xbox Live should be as easy to use on IL2CPP as it is on .NET in Unity 5.6.

    But yeah, on .NET you cannot export these symbols as the exe file isn't built from C++ code. It will be more work to make it use the dedicated GPU.
     
    Tautvydas-Zilys, Apr 14, 2017
    #7

  8. elettrozero

    elettrozero

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    Hey, is there a way to do the same trick for an Intel HD?
     
    elettrozero, Aug 27, 2017
    #8

  9. Tautvydas-Zilys

    Tautvydas-Zilys

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    So the trick I gave you actually only makes sense on systems with both Nvidia/AMD and an integrated Intel GPU. By default all applications use the "default GPU", which is usually low power Intel one. When in your original post you said "game is not using GPU", you probably meant that it's not using the high power Nvidia/AMD GPU, and instead is running on the integrated Intel GPU. So if you want your game to run on the Intel GPU instead, don't specify those symbols. Not running on any GPU is not actually a thing.
     
    Tautvydas-Zilys, Aug 28, 2017
    #9

  10. elettrozero

    elettrozero

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    :) No, what I wish now is to have better performances on my Surface Pro 3 with only Intel graphic adapter. Even tho my original question was a mere deduction I was'n really aware of what I was asking and yet you gave me the correct answer. I was asking myself if there's a line of code to tell Intel HD "Hey, go faster!".
     
    elettrozero, Aug 28, 2017
    #10

  11. Tautvydas-Zilys

    Tautvydas-Zilys

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    If only it was that easy :).
     
    Tautvydas-Zilys, Aug 28, 2017
    #11

  12. Magic73

    Magic73

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    Last edited: Oct 15, 2017
    Magic73, Oct 15, 2017
    #12

  13. Peter77

    Peter77

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    Why isn't this a checkbox in the PlayerSettings?
     
    Peter77, Oct 15, 2017
    #13
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  14. ladron

    ladron

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    Is there a way to make this work for the .NET backend?

    It really seems like this should be something Unity does by default.
     
    ladron, Oct 16, 2017
    #14
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  15. Tautvydas-Zilys

    Tautvydas-Zilys

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    It's stupid, but there is no way to do it on .NET scripting backend since this requires using C++ in the executable. The only other way to do it is have driver vendors recognize your game and enable the GPU for it automatically. However, it's not easy to contact them (usually you'd have to go talk with Microsoft and then they would contact the IHVs).

    The reason Unity doesn't do this by default is because most games made with Unity don't need to use dedicated GPU, and using it when you don't need it wastes battery life. I fully agree this should be a player setting.
     
    Tautvydas-Zilys, Oct 16, 2017
    #15

  16. Peter77

    Peter77

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    Is this on some (internal) task-list or roadmap, to make sure a developer picks/gets this task eventually?
     
    Peter77, Oct 17, 2017
    #16

  17. Tautvydas-Zilys

    Tautvydas-Zilys

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    Yeah I just added this to our task list yesterday. I think we'll be making this setting available for both standalone player and UWP.
     
    Tautvydas-Zilys, Oct 17, 2017
    #17
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  18. soleron

    soleron

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    Not much luck there eh? :D
    Simple solution that could make it a single switch in menu, so many UI/UX redesigns later, year 2021 and nobody bothered.
     
    soleron, Jan 30, 2021
    #18

  19. Magic73

    Magic73

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    :D
     
    Magic73, Jan 30, 2021
    #19