Post Process effect only for a certain material.

[ThaBullfrog]

I want to add a post process effect to a certain material instead of applying it to the entire screen.
In Blender you can set a material to a specific render layer.
Then, when you are editing the post processing, you can call on that render layer to apply your effects only to that material.
Is this possible with a Garry's Mod addon?
I know there's a Source Shader Editor, but I don't think you can add the shaders you create with it to a Gmod addon.
This would be really cool to do so I would massively appreciate anyone simply pointing me in the right direction.

Thanks!

[MysteryPancake]

Not sure how exactly to do this, but I have a feeling the answer has something to do with [URL="https://facepunch.com/showthread.php?t=878986"]stencils[/URL] and using a couple of post-process functions like [img]http://wiki.garrysmod.com/favicon.ico[/img] [url=http://wiki.garrysmod.com/page/Global/DrawBloom]Global.DrawBloom[/url] for example

Maybe someone will correct me on this with an example or something

[ThaBullfrog]

[QUOTE=MPan1;49594639]Not sure how exactly to do this, but I have a feeling the answer has something to do with [URL="https://facepunch.com/showthread.php?t=878986"]stencils[/URL] and using a couple of post-process functions like [img]http://wiki.garrysmod.com/favicon.ico[/img] [url=http://wiki.garrysmod.com/page/Global/DrawBloom]Global.DrawBloom[/url] for example

Maybe someone will correct me on this with an example or something[/QUOTE]

Thanks! Been experimenting with them and they are exactly what I need.