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Unreal Engine video resolution quirks

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    Unreal Engine video resolution quirks

    I will admit that I am a strange edge case... THAT said, I have a high end laptop that has UHD (3840x2160) monitor built-in and doesn't support any other video modes to it over it's link connected to a GTX 1080. The expectation is that the scaling will be done in the GPU. HiDPI (also known as Retina on Mac OS X) support on Linux is not perfect (still needs improvements), but it does exist.

    This is technically NO problem as X was built around the concept that the display monitor and display port (aka desktop/frame buffer) can be different resolutions. Scaling in hardware has been around since the early graphics cards... it is how video overlays and 3D graphics in a window work as well.

    As a result tho, programs including the system tools often only display the attached display video resolution and not the resolutions the graphics card can provide. My work around (which works fine for UT2004 on same machine) is to use xrandr to set the desktop to one resolution (1920x1080) while the monitor is really different (3840x2160):

    $ xrandr --output DP-0 --scale-from 1920x1080 #--scale 0.5x0.5


    I tried to go native UHD on built in display and then tried the UT2004 console "setres 1920x1080" and that didn't work. The workaround could be as simple as known the current equiv for the new UT... that or include the scaled output resolutions nvidia also offers (which are based on common values -- technically you can request quite odd resolutions to scale in hardware like I did once when I couldn't type 1920x1080 and typed 1980x1080 by accident once)...

    With the latest version of Unreal Tournament, I either have to run the graphics at UHD on that monitor or connect an external. Mind you the frame rate is playable on my setup, it is just some of the text on 17" UHD is hard to read .. and my eye sight is not getting any better with age.

    Other than that, the game plays fairly well.... sad the Social Icon on top menu isn't implemented yet but eagerly awaiting the next build. Even in it's current state, I would pay for this game with the understanding that improvements are slated and including Linux (my preferred gaming platform).

    --dx9s

    For those that know how to read the output of xrand:

    HDMI-0 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 697mm x 392mm
    3840x2160 30.00 + 29.97 25.00 23.98
    1920x1080 120.00*
    1280x1024 75.02
    1280x960 60.00
    1280x720 240.00
    1024x768 75.03
    800x600 75.00
    640x480 75.00
    DP-0 connected (normal left inverted right x axis y axis)
    3840x2160 60.02 +
    DP-1 disconnected (normal left inverted right x axis y axis)
    DP-2 disconnected (normal left inverted right x axis y axis)
    DP-3 disconnected (normal left inverted right x axis y axis)
    DP-4 disconnected (normal left inverted right x axis y axis)


    P.S.> the external monitor I am using ATM is an early UHD (@30Hz) 4K monitor I picked up for a really good price (display model) that had a hacked firmware to add 1080@120Hz . (up from [MENTION=2654]6[/MENTION]0Hz)
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