Dolphin doesn't seem to scale internal res properly in fullscreen

[60fps Hack]

Noticing some weird internal res scaling with Dolphin, or to be clear the lack of it. Note that something is being done as performance-wise I definitely notice a difference with the internal resolution setting, but the quality is largely dependent on my desktop res. If anything when my desktop is set at 1080p, setting the internal res at 3X actually looks a little better than 6X. When my desktop is set to downscale at 4K (I only have a 1080p display), and I run the game at 6X internal res, then it looks as I would expect - completely smooth with virtually no aliasing.

Here's some shots with the settings displayed in the upper left. MSAA was left off as it doesn't seem to do much when my desktop is at 1080p and the internal res is high, but also to clearly illustrate the lack of downsampling that should be occurring if the game was rendering as I would expect at such a high internal resolution. Note the umbrella of Princess Peach and Mario's cap, apologies for imgur's crappy compression of png's but even with that the aliasing should still be apparent.

Using a Radeon RX560 4GB, Adrenaline drivers 18.9.1

1. Internal res 6X, desktop native res 1080p



2. Internal res 3X, desktop native res 1080p



3. Internal res 6x, desktop res downscaled 2160p

[60fps Hack]

Ok, perhaps this might explain it:



Note I did not check off that setting for 'High Scaling DPI Override'. If I remove the checkmark, it will just re-appear when I check the properties again, so Windows has apparently got Dolphin.exe in some sort of whitelist for apps that 'require' that setting for some reason...?

I am on the latest Windows Insider fast build (not skip-ahead though) which is expected to go rtm in the next couple of weeks. MS is constantly adjusting Windows scaling behavior with every twice yearly release so perhaps this is a change in the Oct 2018 release that is affecting this.

[Shadorino]

Were you running in exclusive fullscreen mode when you took those 3 screenshots?

I do recall that Dolphin doesn’t have proper downscaling though.
You'll see a difference of course, but not nearly as good as it should be, like when you use NVIDIA's DSR (Dynamic Super Resolution) or AMD's VSR (Virtual Super Resolution) in a PC game.

The high dpi scaling shouldn't make a difference, it's only for the Dolphin app itself, and it is already DPI aware natively.
And yes, every single Windows 10 versions have changed the looks of this high DPI scaling option since the 2015 launch, it's a pain.

[60fps Hack]

Yup, exclusive - was not using borderless. Perhaps Dolphin was always this way? If so not sure I understand the decision to remove the FullScreen Resolution setting, I can understand it caused confusion but when there's such a drastic quality difference it may be worth keeping, perhaps as an .ini setting instead of being exposed through the GUI.

[JosJuice]

(09-28-2018, 07:54 AM)60fps Hack Wrote: Yup, exclusive - was not using borderless. Perhaps Dolphin was always this way? If so not sure I understand the decision to remove the FullScreen Resolution setting, I can understand it caused confusion but when there's such a drastic quality difference it may be worth keeping, perhaps as an .ini setting instead of being exposed through the GUI.

It is in fact available as an INI setting right now.

[60fps Hack]

Yeah, I actually looked for it - is it not FullscreenResolution = ? I've tried FullscreenResolution = 3840 x 2160 and don't get any different results.

Edit: Ah, Ishiiruka helped me figure it out. The .ini setting only apparently applies to dolphin.ini, not per-game. The setting you need to change under [Display] in Dolphin.ini:

FullscreenDisplayRes = 3840x2160

Note there's no space between the values and x. That's got it for me.