https://bugs.freedesktop.org/show_bug.cgi?id=29762
--- Comment #4 from Marek Olšák maraeo@gmail.com 2010-08-25 23:19:49 PDT --- (In reply to comment #3)
May be it will be not too bad idea to restore this register type support in Gallium first? Anyone remember why it was removed?
I guess no one was using it, so I would not call it "support". Either way, we have to start from scratch. Tom Stellard might know how hard it would be to implement relative addressing in fragment shaders.