[CSGO] Render (screenshot) weapon model in Counter-Strike: Global Offensive
 

I need to take screenshot of weapon model from screen like this, without any background. Tried to remove and change resources using mat_texture_list console command, but no success.
I'd like to take this screenshots programaticaly, so I can't use image editing software each time. I think the model should be separated from other game content (background, text, etc.) using game engine, but I can't find console command or API interface to do it. Or just insert a background behind weapon model.
Please help! Thank you!

https://owncloud.smolensky.info/s/d0326UtTppa5pr8

Re: [CSGO] Render (screenshot) weapon model in Counter-Strike: Global Offensive
 

Just find a map with distinctly different color on the screenshot and use Photoshop's magic wand select.

Re: [CSGO] Render (screenshot) weapon model in Counter-Strike: Global Offensive
 

or u can create entity "env_smokestack" with green color and take a screenshot inside the smoke

Re: [CSGO] Render (screenshot) weapon model in Counter-Strike: Global Offensive
 

Could you help me, how to do it?