Upon reading around, I have read that Darkplaces can have post-processing effects using glsl. I have noticed that in my mod in the console, it has been unloading information to "glsl/default.glsl". I have never really paid any attention until learning about post processing effects(moreso upon reading a thread on here back in 2008 regarding the effects).
My question is, where exactly is glsl/default.glsl being placed? It isn't in my Darkplaces mod folder, or in any of the sub folders. Where else would it possibly place it? Also, is it controllable via QC by commands? Any other information regarding the topic would be very nice so that it is easier to understand.
Responses are appreciated!