<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_ASSIGNED " title="ASSIGNED - GPU hang in blender 2.80" href="https://bugs.freedesktop.org/show_bug.cgi?id=109072#c23">Comment # 23</a> on <a class="bz_bug_link bz_status_ASSIGNED " title="ASSIGNED - GPU hang in blender 2.80" href="https://bugs.freedesktop.org/show_bug.cgi?id=109072">bug 109072</a> from <a class="email" href="mailto:kenneth@whitecape.org" title="Kenneth Graunke <kenneth@whitecape.org>"> Kenneth Graunke</a> <pre>(In reply to Lionel Landwerlin from <a href="show_bug.cgi?id=109072#c22">comment #22</a>) > Managed to get some understanding about what's going on here : > > Since we switch to softpin all buffers, that means the vertex buffers aren't > restricted to the low 4Gb region. So we run into the same HW issue as before. > In effect softpinning VBOs nullifys the 32bit reloc flag in > genX(emit_vertex_buffer_state) (genX_state_upload.c). > > I'm not quite sure how to fix this apart from disabling softpinning on all > buffer objects, because buffers can be reused from one type another > (transform feedback output into vertices for instance)... We ought to be doing VF cache invalidations when VB[i] or IB transition between different 4GB segments. But, maybe we're not doing those properly. :(</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are on the CC list for the bug.</li> </ul> </body> </html>