https://bugs.freedesktop.org/show_bug.cgi?id=31530
Summary: r600g: GPU hangs and segfaults with piglit (Regression) Product: Mesa Version: git Platform: Other OS/Version: All Status: NEW Severity: normal Priority: medium Component: Drivers/Gallium/r600 AssignedTo: dri-devel@lists.freedesktop.org ReportedBy: monraaf@gmail.com
Created an attachment (id=40180) --> (https://bugs.freedesktop.org/attachment.cgi?id=40180) part of backtrace of fbo-blit-d24s8
With latest git master I see a lot of piglit tests segfault and also some more GPU hangs. e.g. fbo-blit-d24s8 segfaults and fbo-readpixels now hangs the GPU.
git bisect says:
63c3e3a3dc73f8a72e0d08ac4453df57bccdfdb9 is the first bad commit commit 63c3e3a3dc73f8a72e0d08ac4453df57bccdfdb9 Author: Keith Whitwell keithw@vmware.com Date: Tue Nov 9 20:08:45 2010 +0000
r600: fix my pessimism about PIPE_TRANSFER_x flags
For some reason I though we needed the _DISCARD flag to avoid readbacks, which isn't true at all. Now write operations should pipeline properly, gives a good speedup to demos/tunnel.