I can confirm this breakage on rv670 too. It may be related to all chips < RV710 (just a guess). The bug report: https://bugs.freedesktop.org/show_bug.cgi?id=35312
I compile mesa with attached patch since then, but that flush should indeed be implicit, not explicit. 2011/4/30 Mathias Fröhlich <mathias.froehl...@gmx.net>: > > Hi, > > Since the lazy gpu flush changes for r600g about two weeks ago, I get broken > mipmaps on my notebooks rv635. > I am not sure if my analysis is right, but it appears to me that flushing the > destination caches like it is done in r600_context_flush_dest_caches is not > sufficient for my rv635. Since then, I need the attached patch to get correct > automatically generated mipmaps. > The important callpath for my observed breakage is when > r600_context_flush_dest_caches is called from r600_set_framebuffer_state, > which > is called on each new mipmap level. With the attached change it is sufficient > for flushing the previously rendered level that is used as a sampler source > for > rendering the next level. Without that flush, I get garbage in the smaller > mipmap levels. > > So, I know that this patch is not applicable, since it does not account for > sufficient cs space for this additional flush. Also it is probably too croase > in > face of the finegrained bo flush logic. > Also I cannot hear so much people screaming, so I guess the rv635 is about the > only chip that suffers from this problem. > But I failed to find that finegrained bo flush with the apropriate flush > flags that > makes mipmaps work again. > > May be this does ring some bell which flush is missing? > If not, does somebody have any clue which chips do suffer from this prolem? > > Greetings > > Mathias > > _______________________________________________ > mesa-dev mailing list > mesa-dev@lists.freedesktop.org > http://lists.freedesktop.org/mailman/listinfo/mesa-dev > > _______________________________________________ mesa-dev mailing list mesa-dev@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/mesa-dev
