On Tue, Feb 19, 2013 at 3:28 PM, Michel Dänzer <mic...@daenzer.net> wrote: > On Die, 2013-02-19 at 14:04 +0100, Marek Olšák wrote: >> On Tue, Feb 19, 2013 at 11:02 AM, Michel Dänzer <mic...@daenzer.net> wrote: >> > >> > Really, what I don't understand is why r600g doesn't seem affected by >> > this... at least on my RS880 it's passing the piglit tests this change >> > fixes with radeonsi. So maybe I'm just missing some magic bit for >> > radeonsi. >> >> RGB formats do fail fbo-blending-formats with r600g/redwood here. > > Okay. > > >> However the alpha channel can sometimes contain 1 in memory even if >> the format is RGBX. Off the top of my head, glClear, glTex[Sub]Image, >> glCopyTex[Sub]Image always set alpha to 1. > > Well, but they shouldn't for these formats. :) The memory corresponding > to X* channels should remain unchanged. I'm working on a separate patch > for that for radeonsi.
I think the only way you could do that is to set the colormask to RGB. Doesn't it have a negative effect on performance if some channels are masked out? Marek _______________________________________________ mesa-dev mailing list mesa-dev@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/mesa-dev
