<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_ASSIGNED " title="ASSIGNED --- - [sna gen4] corrupt rendering (and flickering on redraw)" href="https://bugs.freedesktop.org/show_bug.cgi?id=55500#c84">Comment # 84</a> on <a class="bz_bug_link bz_status_ASSIGNED " title="ASSIGNED --- - [sna gen4] corrupt rendering (and flickering on redraw)" href="https://bugs.freedesktop.org/show_bug.cgi?id=55500">bug 55500</a> from <a class="email" href="mailto:chris@chris-wilson.co.uk" title="Chris Wilson <chris@chris-wilson.co.uk>"> Chris Wilson</a> <pre>Yes, that is characteristic of this bug. The internal vertex/texture coordinates that are being passed along the GPU pipeline become corrupt (it looks like we overflow a small ring buffer). The only effective approach I've found so far has been to keep the number of rectangles inside the GPU pipeline below a magic value - but that is quite tricky here, and the simplest seems to be the big hammer that I stumbled upon for UXA. (Stumbled as it was an artifact of the original implementation and fixes an entirely different GPU bug - an immediate hang.)</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the QA Contact for the bug.</li> </ul> </body> </html>