I'm not really certain how to add this to the article, so it's here for informative purposes while also allowing me to process it a bit.
Supported resolutions:
- Fullscreen: 1280x720, 1280x800, [...] 1600x900, 1600x1024, 1680x1050, [...] 1920x1080, 1920x1200.
- Window: 1280x720, 1920x1080. No other resolutions are supported.
Antialiasing (SSAA):
- High: 2.25x
- Highest: 4x
The multiplier is basically the difference between the total number of pixels in the render target divided by the base resolution selected. This have been confirmed using Special K's ability to view render targets while using different settings.
The above allows one to achieve various resolutions using certain combinations.
- 3840x2160 (4K) can be achieved by using 1920x1080 + Highest. (3840x2160) / (1920x1080) = 4x (SSAA)
- 2560x1440 (QHD) can be achieved by using 1280x720 + Highest. (2560x1440) / (1280x720) = 4x (SSAA)
- Using 1920x1080 + High (2.25x) will result in a 2880x1620 resolution being used.
- Using 1280x720 + High (2.25x) will result in a 1920x1080 resolution being used.
Now despite it being possible to achieve a 2560x1440 render target without modifying the executable itself, the actual end result sucks. Most likely due to the extreme amount of temporal anti-aliasing on top of it. This results in the image looking extremely washed out on native 1440p monitors.
Exclusive fullscreen mode
Exclusive fullscreen mode can be achieved by using Special K's ability to force a fullscreen mode override. This will allow G-Sync to kick in as well.
Borderless window mode
Using [[Special K]'s resolution override/limiter as well as borderless fullscreen mode override, it's possible to get the game to output in whatever arbitrary resolution one wishes to.