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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - DRI3 Stuttering while scrolling in Chromium/Chrome with VBLANK off"
href="https://bugs.freedesktop.org/show_bug.cgi?id=99418#c21">Comment # 21</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - DRI3 Stuttering while scrolling in Chromium/Chrome with VBLANK off"
href="https://bugs.freedesktop.org/show_bug.cgi?id=99418">bug 99418</a>
from <span class="vcard"><a class="email" href="mailto:michel@daenzer.net" title="Michel Dänzer <michel@daenzer.net>"> <span class="fn">Michel Dänzer</span></a>
</span></b>
<pre>(In reply to lei.pero from <a href="show_bug.cgi?id=99418#c18">comment #18</a>)
<span class="quote">> I didn't know that about modesetting driver, anyway, even with
> LIBGL_DRI3_DISABLE=1 same thing happens.</span >
Maybe chromium doesn't pass on the environment variable to its GPU helper
process, or maybe there was still a chromium process around.
<span class="quote">> I don't how to disable tripple buffering to test it and if it's possible,</span >
Only by changing the code,
mesa/src/loader/loader_dri3_helper.c:dri3_update_num_back(). E.g. set num_back
= 1 in the else case.</pre>
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