sis dri support

[ydg at cox.net]

I have a sis vga chipset [a relatively common laptop chipset] in my 4.8-stable system. I would like to see DRI support for it. DRI modules are available under linux, which tells me its both possible, and at least work has been started on the project.
perhaps this is already available for fbsd, and i just missed information on it. if so pointing me in the right direction would be much appreciated.