Add DPI scaling override options

[MrEWhite]

I noticed an issue with Windows recently where, upon relaunching some games, it'll just change the High DPI scaling override option to application, regardless of what you had it set to before, and even if you change it in the "change settings for all users" section of the compatibility options. I also noticed that dxwrapper has a "DisableHighDPIScaling" option, and was wondering if it would be possible to add an option to be able to choose which DPI scaling override option (off, application, system, system (enhanced)) you want in the dxwrapper ini file.

[mirh]

https://web.archive.org/web/20121114072805/http://msdn.microsoft.com/en-us/library/windows/desktop/hh994464(v=vs.85).aspx
I would be curious to know what are the issues that PCA can detect to automatically trigger the HIGHDPIAWARE flag (the other options are DPIUNAWARE and GDIDPISCALING).

[elishacloud]

I added an option called ConfigureDpiAwareness that can configure the DPI scaling options. However, scaling options can only be set once. If the game (or OS) already sets it for an application then dxwrapper won't be able to set it again.

Here are the options:

1 = SystemAware
2 = Unaware
3 = UnawareGdiScaled
4 = PerMonitorAware
5 = PerMonitorAwareV2

Here is the updated build: dxwrapper.zip

[mirh]

Here I seem to understand they argue that either SetThreadDpiAwarenessContext or the __COMPAT_LAYER environment variable might be able to work around whatever the compatibility assistant decides to apply.

[elishacloud]

I am using SetThreadDpiAwarenessContext() already. However, if the DPI awareness is already set in the __COMPAT_LAYER then dxwrapper's won't work. DPI awareness can only be set once.

dxwrapper isn't guaranteed to load soon enough to change the __COMPAT_LAYER.