Use double in Animated texture; Remove depth field; Add option to custom texture.

git-tfs-id: [https://tfs.codeplex.com:443/tfs/TFS15]$/Atomix;C41392
Hand state tracker now passes cursor position.

git-tfs-id: [https://tfs.codeplex.com:443/tfs/TFS15]$/Atomix;C41393
Pressed hand tracker.

git-tfs-id: [https://tfs.codeplex.com:443/tfs/TFS15]$/Atomix;C41394