http://mumble.sourceforge.net/static/overlay123_s.png The overlay is a feature that will overlay the nicknames of users in the channel or users talking over your currently running game. That means you will be able to see who's listening and talking ingame.
Mumble provides overlay support for Games using Direct3D 9/10 or OpenGL on Windows and OpenGL using games on Linux/OSX.
Games that are known to have major issues with the Mumble overlay:
- Combat Arms (overlay causes CA to crash after map changes; overlay will not display unless one joins a server and then leaves it)
- Supreme Commander (Multiplayer)
- Vanguard (crashes to desktop when overlay is enabled)
- Call of Duty 2, 4 (PunkBuster kick)
Games that are known to have minor issues with the Mumble overlay:
- Killing Floor and Red Orchestra (same game engine; the game will crash when changing resolutions or going into fullscreen mode)
Depending on the API the engines of games use, and sometimes how they use it, the overlay will not display. Currently, of Direct3D only the Direct3D 9 and 10 APIs are supported in their 32-bit versions, but not 9ex or 11, or any in a 64-bit version.
|Game||API||Comment (Why does it not work?)|
|Dawn of War (series)|
|Guild Wars 2||Direct3D 9||because of device recreation|
Overlay functionality by API, OS and CPU-architecture:
|OpenGL||x64||Any||does not display|
|Direct3D 9||x86||Windows||fully works (on first device creation)|
|Direct3D 9||x64||Windows||does not display|
|Direct3D 9ex||x86 & x64||Windows||does not display|
|Direct3D 10||x86||Windows||fully works (on first device creation)|
|Direct3D 10||x64||Windows||does not display|
|Direct3D 11||x86 & x64||Windows||does not display|
Disabling the overlay for a particular game
If you would like to disable the overlay for a certain game (because you do not want it in that particular game, or that game has issues with the overlay), and do not want to disable the overlay altogether, put a file named nooverlay (without any extensions) in the same folder as the game executable is located. This will tell Mumble that you do not want the overlay in this particular game. Current releases of Mumble also support black-/whitelisting from the client itself (Settings->Overlay, make sure advanced is checked).