Render Target \ Texture \ RT Cams (Insurgency Scopes): Getting them to work properly?

[Mr. Fokkusu]

So I've been getting the old Insurgency: MC stuff onto a SWEP base, and in the process of doing so I realized that the sniper scopes display this

[IMG]http://puu.sh/n6FTR.png[/IMG].

I've seen somebody get them to work in GMod before, but I wasn't sure how they went about doing it. Do I have to fiddle around with VMTs? Or is there something I have to do in my code? I do believe RT Cams were removed or something, but I have no idea if that's related to this issue.

Any help would be greatly appreciated, I'd love to get these things in fully working order.

[Kogitsune]

Well, the idea is as follows:

Create a render target of a given square size.

Change the $basetexture of the scope on your model to $basetexture of the rt.

Before drawing the view model, set the render target to that one, create a viewport of the same size, and call render.RenderView, then restore the viewport and RT.

It's really old code, [url=https://facepunch.com/showthread.php?t=1079050&p=29195790&viewfull=1#post29195790]but I used this back in 2011[/url] to make the ammo counter on the side of an avp pulse rifle model dynamic.

If you desire a more modern example, Spy's Customizable Weapons ( and Firearms: Source pack, if I remember correctly ) features this on the scope attachments.