Hi All!
I've been playing around with getting transparent windows / views to work on FreeBSD.
On WindowMaker + xcompmgr / compton I can't get the window to be transparent. There doesn't seem to be any visual that has direct.alphaMask > 0. However, if I use the tool transset-df I can set the whole window to be transparent. (transset-df traverses the window tree and changes the properties of the root window)
However, if I use xfce4 + xcompmgr / compton transparency works fine. Both for pure X11 apps and NSApp with NSView and NSOpenGLView.
I haven't looked into it yet so I don't know at this what the difference is between windowmaker and xfce4...