Resolution scaling issue from the steam forums

[RedEye9]

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Wrong resolution[/size] in windowed mode[/size][sub][/size][/sub]

@keggerius

I am using the launch options -windowed -w -h. This works perfectly for other Source games, but Black Mesa thinks my 3840x2160 monitor is 2560x1440 for some reason, so it scales the window up by a factor of 1.5. So if I use, for example, -w 1920 -h 1080, it gives me a 2880x1620 window, with a 1920x1080 resolution but with all the pixels scaled up to 1.5x pixels, making them look blurry. On a 4k monitor, this still isn’t that bad looking, but it would be nicer to have 1-to-1 pixels. Is there some setting in the config files that will force the game to think the monitor is 3840x2160?

https://steamcommunity.com/app/362890/discussions/0/1693785669854252232/

[Flavrans]

Just a long shot, but ask the user to check if [tt]mat_viewportscale[/tt] is set to something other than “1.0”.

You’ll get a 1.5x upscaling if [tt]mat_viewportscale “0.666667”[/tt] and [tt]mat_viewportupscale “1”[/tt].

On a side note, [tt]mat_viewportscale[/tt] doesn’t work well with the December Beta update. Changing [tt]mat_viewportscale[/tt] messes up the new dynamic lighting engine, and the console gets spammed with “ERROR!! - Secondary View NewLights RT SIZE MISMATCH VIEWSIZE […]” error messages.

EDIT: I say long shot because I don’t think [tt]mat_viewportscale[/tt] will affect the size of the window, just the in-game rendering resolution.

[RedEye9]

He figured it out after Chon replied. (simple as -noborder)
https://steamcommunity.com/app/362890/discussions/0/1693785669854252232

I did repost your suggestion, thanks for your help.

[Flavrans]

Ah, OK. I was about to post a follow up post saying to scratch my previous post as I figured out that it could be a DPI scaling issue.

For some reason, when you run Black Mesa in windowed mode, the window gets scaled (stretched) according to the scaling setting in Windows Display settings (including -noborder had no effect on this on my system).

There are two ways to work around this:

1. Set the display scaling to 100%, or
2. Enable the “Override high DPI scaling behavior” setting in bms.exe Properties -> Compatibility, and make sure “Scaling performed by:” is set to “Application”.