Ya hace tiempo que se conoce de la existencia de esto, en la web de "zmorris" ya se publicó una queja enviada a VALVE y se recibió esto:
26 April 2007
Victory! (almost)
sv_pure has been put into the beta testing phase and I am so excited finally that this is coming out! If you remember one of my original posts on this site was asking Valve to put a command like this into game to force default textures so people can’t cheat it up… Now we just have to test it out, try and break it, and see if this is the solution to the transparent texture issue!
We have done another update to the Source Engine Dedicated server beta. This one is a BIG update, in particular we have added a pure server mode (can you say whoop?).
To get the beta run the hldsupdatetool with “-beta srcds0407″. To test the pure server functionality you also need to run the beta client, you do this by adding “-beta srcds0407″ to your Steam command line.
Pues eso, hasta entonces no se ha recibido mas información. ( Aun estara en BETA :S)
PD: no tengo tiempo para traducirlo, sorry para los que no lo entiendan.