|Planned platforms of Torque3D|
Now don't spill your beer just yet, as this is just the proposal the developer makes for a crowd-funding building up on his great previous Linux/OpenGL work.
One of the first (hopefully soon to be) FOSS games that could benefit from this, is the currently also looking for crowd-funding RoTC abstract FPS. Only 9 days left, but they made another good increase in the last couple of days, so it is still possible to reach their goal of $1500. In fact the older (mostly closed source) version was also recently updated and you can try it on some new servers.
The (more or less friendly) fork GREED tech MIT that aims to make a full FPS development kit out of Torque3D also seems to make some interesting progress, so it looks quite bright development wise for now :)