"OpenGL pseudo-driver that adds some graphical enhancements to OpenGL-based games. You should place opengl32.dll and QeffectsGL.ini to the game executable's directory before running the game. If the game has multiple renderers available (e.g. Half-Life, Unreal), OpenGL renderer must be switched to."
Copy the files from the archive (QeffectsGL_readme.txt, opengl32.dll and QeffectsGL.ini) in the Kingpin directory, where your Kingpin.exe is. After you run the game, a log file will appear (QeffectsGL.log). You can read it to see if you have any errors. To uninstall, just delete the three files. Enjoy my modified QeffectsGL. All thanks go to made by XaeroX, the maker of QeffectsGL.
Due to SSAO not properly displaying shadows (fuzzy shadow appears around the model feet, through shadow on ground is ok) edit QeffectsGL.ini with notepad and change SSAO=1 to SSAO=0, like below. The rest can be on default, because if you change to SSAO=0, it doesen't take into account the others. Look in Moddb "images" to see a comparation between the two images. You can download v.1 (already edited file, if you don't want to make yourself the modification)
And if you run the game at a lower frame rate than usual, change the below numbers to a lower ones.