Drawing

I added the ability to draw at runtime. We kind of had this in GMod, but it works a bit differently in S&box, but with a few benefits.

These cubes are drawn using the new methods. These aren't models, they're drawn manually in c# each frame. 

attribute 'class' not allowedattribute 'class' not allowedattribute 'contenteditable' not allowedattribute 'blocktype' not allowed

The cool thing about Source 2 is that we don't have to leave it there. Procedural content can look just like regular models. It can get the same lighting and cast the shadows like everything else can.

attribute 'class' not allowedattribute 'class' not allowedattribute 'contenteditable' not allowedattribute 'blocktype' not allowed

The render pipeline lets you do some nice tricks, like rendering only to the bloom pass.

attribute 'class' not allowedattribute 'contenteditable' not allowedattribute 'blocktype' not allowed

This stuff was only really made for things like in game widgets, but it's a lot of fun to mess around with, so I think we'll find a lot of uses for it.