<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW --- - radeonsi with glamor has very poor performance with primitives drawing" href="https://bugs.freedesktop.org/show_bug.cgi?id=68524#c27">Comment # 27</a> on <a class="bz_bug_link bz_status_NEW " title="NEW --- - radeonsi with glamor has very poor performance with primitives drawing" href="https://bugs.freedesktop.org/show_bug.cgi?id=68524">bug 68524</a> from <a class="email" href="mailto:michel@daenzer.net" title="Michel Dänzer <michel@daenzer.net>"> Michel Dänzer</a> <pre>Created <a href="attachment.cgi?id=91804" name="attach_91804" title="glamor: Reinstate wrappers to make software fallbacks a little less inefficient">attachment 91804</a> <a href="attachment.cgi?id=91804&action=edit" title="glamor: Reinstate wrappers to make software fallbacks a little less inefficient">[details]</a> <a href='page.cgi?id=splinter.html&bug=68524&attachment=91804'>[review]</a> glamor: Reinstate wrappers to make software fallbacks a little less inefficient (In reply to <a href="show_bug.cgi?id=68524#c25">comment #25</a>) > It's not amazingly fast this way, but it is a 10x performance improvement. That's a nice improvement in performance, but it's still an order of magnitude slower than EXA, so I feel it would be better to either go directly for full-blown shader-based acceleration of diagonal lines, or to work on improving the performance of software fallbacks in general. For the latter, this patch could serve as a starting point. It basically reinstates the glamor wrappers removed in <a href="http://cgit.freedesktop.org/xorg/driver/xf86-video-ati/commit/?id=a60d2152e928a7011fc7c44a885a34c3cdd4f0fe">http://cgit.freedesktop.org/xorg/driver/xf86-video-ati/commit/?id=a60d2152e928a7011fc7c44a885a34c3cdd4f0fe</a> in order to allow direct access to pixmaps for software fallbacks. Known caveats: Tiling needs to be disabled, as software fallbacks may now access the GPU buffers directly. Trying to start xfwm4 crashes the X server for me. But I was able to run gtkperf on a 'naked' X server with this patch, and it looks like its performance is improved pretty much across the board. The lines and circles tests still take double-digit seconds though, just to prevent everyone from getting too excited.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> </ul> </body> </html>