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How to get nice antialiasing working
#1
If you have a Nvidia graphics card, you can set it to render the game in a higher resolution, and then scale down to your screen to get rid of aliasing. In this tutorial you'll learn how.

For this guide we'll need:

1 - Nvidia graphics card (I have no experience with AMD);

2 - Nvidia Profile Inspector;

3 - Updated drivers, or the driver which best worked with your GPU and games.

--

1 - Open Nvidia Inspector and click on the tool icon;

2 - Look for a yellow 'sun' button, near the top center of the screen. This creates a new profile. Click it, and create a profile named Pristontale EU;

3 - Three buttons to the right is the button to attach an application to the profile. Click it, head to where you installed Pristontale EU, and select the game.exe, but don't leave the screen yet;

4 - Next to the File Name field, select Application Absolute Path (if you don't, it will not register the game.exe to your profile, as many other profiles already use that). Click ok;

5 - Head to the Antialiasing section. In Antialiasing - Mode, select Override any application setting. 

6 - Select the antialiasing type you want to use in Antialiasing - Setting. For the best effect, use 4x4 Supersampling (D3D Only). That will render the game 4x the native resolution, then scale down to native size;

7 - Save and login in the game. Press X, and go to settings. There, disable the ingame antialiasing. This will apear to have selected both On and Off, but this really means it is off.

This will effectively get rid of all aliasing, but is very performance hungry. If your card can't handle 4x the native resolution, then use 8x Multisampling in the Antialiasing - Setting section, and turn on Toggle FXAA on or off.

Without antialiasing → https://imgur.com/uE9qh7T

With antialiasing → https://imgur.com/BkfaYao

[Useful info]

1920x1080*2 = 3840x2160, which is 4K resolution on a 16:9 proportion
1920x1080*4 = 7680x4320, which is 8K resolution on a 16:9 proportion

Supersampling = renders the entire image bigger, before scaling down to native size. Doesn't change textures, just gets rid of aliasing properly. Very performance hungry.

Multisampling = Renders just the edges on a higher resolution before scaling down to native size. Doesn't change textures; gets rid of aliasing to a nice degree, but less than Supersampling. Less performance hungry.

FXAA = Simulates higher resolution by adding more pixels around the edges. Softens the image a lot, but aliasing will still be noticeable. Doesn't change textures, but is much lighter than both other methods.

[Troubleshooting]

If you notice antialiasing only works in windowed mode, right click the game's launcher, and go to properties, then compatibility. Check the box which says "disable fullscreen optimizations".
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