[Mesa-dev] [Bug 24226] libGL tries using direct mode when it should use indirect (only tries indirect if forced)

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Thu Oct 14 13:52:26 PDT 2010


--- Comment #18 from Nathan Kidd <nathan at hummingbird.com> 2010-10-14 13:52:26 PDT ---
1) To further document "lots of people affected by this" (and I'm well aware I
haven't gotten off my posterior to fix this either):

SuSE brought this up last year[1] and ended up shipping with this patch[2] (a

-    if (glx_direct)
-    dpyPriv->driswDisplay = driswCreateDisplay(dpy);
+//    if (glx_direct)
+//    dpyPriv->driswDisplay = driswCreateDisplay(dpy);

[1] http://www.mail-archive.com/mesa3d-dev@lists.sourceforge.net/msg06684.html
[2] https://bugzilla.novell.com/show_bug.cgi?id=469280

2) Bear in mind that making the visuals match exactly merely allows the
software renderer to be used, it doesn't allow indirect GLX (check your GLX
server strings carefully). 

LIBGL_ALWAYS_INDIRECT is quite a pain, (more so for XDMCP sessions). In my
experience client-side rendering is what most people want if the display is
remote.  If the network load is too heavy for client-side the render load will
very likely be too heavy for the software rasterizer. (And apps can use display
lists to alleviate the network load.)

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