Fullscreen Resolution Scaling Issues

Development Programming & Scripting UI
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1

Hello,

We’re encountering an issue related to fullscreen resolution behavior.

When running the game in fullscreen mode and switching from a higher resolution (e.g., 1920x1080) to a lower one (e.g., 1280x720), the screen appears to resize instead of maintaining fullscreen. As a result, the viewport becomes blurry, and the display quality significantly degrades — we would expect it to retain fullscreen mode and adjust internal rendering resolution accordingly, rather than physically resizing the screen.

Additionally, after switching resolutions, we observe the following issues:

  • Blinking edges around the screen.
  • Mouse cursor misalignment, where the cursor appears at one location but interacts with a different part of the screen on click/hover.
  • When switching from a lower resolution to a higher one while in fullscreen mode, only the top-left portion of the viewport is displayed, as if it’s not correctly scaling to fit the screen.

We attempted to reproduce this in the Lyra Starter Game, and the same behavior occurs there. Please refer to the attached video for a demonstration of the issue.

Could you please advise if there’s a proper way to handle resolution changes in fullscreen mode, or if this is a known issue? Any guidance or workaround would be greatly appreciated.

Thank you,

Harut

2

Hi,

This is a known issue, and generally speaking we aren’t able to support exclusive fullscreen at non-native resolutions. Our hands are a bit tied here from an OS perspective, but you’ll typically get a better experience running at native resolutions with r.ScreenPercentage allowing you to scale down the render resolution as needed for performance.

Best,

Cody

3

Thank you for support and quick response! We’ll try to play with r.ScreenPercentage CLI command to gain more expected results.

4

Hi Cody,

Just to clarify — by “native resolution,” do you mean the recommended resolution?

For example, we’re using a Philips 32:9 aspect ratio SuperWide curved LCD display, where the recommended (native) resolution is 3840x1080 in Fullscreen mode. However, the monitor also supports wider resolutions. So, when you mention showing only the native resolution, do you mean we should only support 3840x1080?

We tested the game in 3840x1080 Fullscreen mode, and it appeared as expected.

However, when we ran it at a wider resolution (5120x1440), the display appeared stretched, and only the top-left portion of the UI widget was visible.

Please see the described scenarios as an attachment.

Thanks,

Harut

5

Hi,

Typically the recommended resolution from Windows matches the native resolution (i.e. the actual number of pixels on the screen) so something seems to be strange about your setup. I’d recommend checking that your graphic drivers are up to date, and verifying that the cable you’re using can support that resolution. It’s possible that the cable doesn’t have the bandwidth to support full resolution at the display’s refresh rate and is recommending downscaling in lieu of a lower refresh rate.