Portal info behind walls.
portal_draw_ghosting 0
"portal 2 see portals through walls"
and, just out of curiosity; Why would you want to hide them? I admit they are a bit weird seeing them the first few times (when you've played as much Portal 1 as me) but... curious why you'd want to hide them? 
Vordwann wrote:
Why shoot portals if you're just taking screenshots, Masterlagger?
To take pictures in certain areas, of course portals wouldn't be necessary if the person knew the noclip cheat. It's what I did before using noclip and crosshair 0 to take pictures.
rellikpd wrote:
i didn't ask why MasterLagger may not want ghosting portals. I can already figure out reasons why someone wouldn't. I asked why HE wanted to turn it off.
I was just throwing an idea out since Cybermaxke didn't post anything back yet.
Vordwann wrote:
why not do cl_drawhud 0 and r_drawviewmodel 0 instead to get rid of the portal gun as well?
Didn't know those either. Nice to know though.