invisible making texture

[pcbouncer]

i need some sort of texture that will allow players not to see, in which when they enter the area of the texture, they can see what's inside. im pretty sure that there is a tool texture for that but im not sure which, please help. its for preserving fps when looked at.

[Drofder2004]

I think you mean Portal. Checks modsonline for a tutorial.

[pcbouncer]

thanks i will try that