zreaddraw doesn't work correctly at least on r200 (independant from tiling, page flip etc.). Looks related to the renderbuffer code, last date it worked was 20050504 18:00 GMT. It's not completely broken (shortly after that date it was) but about 4/5 of the area is completely white. Though if you don't force it to redraw after starting it it's completely hosed.
Created attachment 3029 [details] Kernel .config bogus zreaddraw screenshot (24bpp). The amount of how much of the picture is mostly correct is somewhat randomized, i.e. for instance switch to a different screen and back and it will be different, but at least 2/3 is always white.
only r200 was affected, fixed.
Mass version move, cvs -> git
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