I'm now working on a map. From HL1 I'm used to use mainly textlights to light my maps because they are better in making contrasts and the projected light is more accurate to its source. So I've used default texture as textlight and got this

As u can see, the floor isn't lit along whole light source, only in middle. Is there any chance to get rid of this (better compile tools perhaps).
If not then Source sucks 
Thanx, and excuse pls my english










