Gl affinemodels
From FTE
Name: gl_affinemodels
Default value: "0"
Flags:
Specifies an opengl hint. When non-zero, alters perspective correction to run faster at the cost of some precision and/or accuracy.
Setting to 1 may result in faster model rendering. It may do nothing - it depends on your opengl drivers.
Setting to 0 leaves the value as 'dont care'. There is no option to specify nicest, only fastest.