Materials of the author «Ceejay.dk» 1

ReShade is an advanced, fully generic post-processor for games and video programs developed by crosire. Imagine your favorite game with ambient occlusion, real depth of field effects, color correction, etc. ReShade provides an automated and generic way to access information about the color and depth of the frame (the latter is automatically disabled during multiplayer to prevent use), and all the tools to make it all work.

Customization:
1) launch the application (ReShade 4.3.0.exe );
2) choose the path to the game (standard path - C:\Program Files (x86)\Steam\SteamApps\common\Spintires MudRunner\MudRunner.exe)
3) select "Direct3D 9";
4) load the standard effect and click "OK";
5) start the game and press "Shift + F2", press "+" and touch "shader", select the option from the "shader" that you want.

Works in multiplayer. SpintiresMod.exe supports ReShade.