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<body><span class="vcard"><a class="email" href="mailto:imirkin@alum.mit.edu" title="Ilia Mirkin <imirkin@alum.mit.edu>"> <span class="fn">Ilia Mirkin</span></a>
</span> changed
<a class="bz_bug_link
bz_status_NEW "
title="NEW - GLAMOR triggers visual artifacts with nouveau GL backend"
href="https://bugs.freedesktop.org/show_bug.cgi?id=93373">bug 93373</a>
<br>
<table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>What</th>
<th>Removed</th>
<th>Added</th>
</tr>
<tr>
<td style="text-align:right;">Summary</td>
<td>sometimes hickup with persistent garbaby
</td>
<td>GLAMOR triggers visual artifacts with nouveau GL backend
</td>
</tr></table>
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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - GLAMOR triggers visual artifacts with nouveau GL backend"
href="https://bugs.freedesktop.org/show_bug.cgi?id=93373#c4">Comment # 4</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - GLAMOR triggers visual artifacts with nouveau GL backend"
href="https://bugs.freedesktop.org/show_bug.cgi?id=93373">bug 93373</a>
from <span class="vcard"><a class="email" href="mailto:imirkin@alum.mit.edu" title="Ilia Mirkin <imirkin@alum.mit.edu>"> <span class="fn">Ilia Mirkin</span></a>
</span></b>
<pre>OK, you're using a GM107, which means that you're *not* using
xf86-video-nouveau 1.0.12 since we dropped our GLAMOR integration (since it was
buggy). You're now using xf86-video-modesetting, which has a functioning GLAMOR
integration.
Unfortunately GLAMOR does something which makes nouveau very sad. I've found a
solution, but it's roughly equivalent to pouring cement into the piping. If
you'd like, you can patch your mesa build with
diff --git a/src/gallium/drivers/nouveau/nvc0/nvc0_vbo.c
b/src/gallium/drivers/nouveau/nvc0/nvc0_vbo.c
index c464904..b3b6627 100644
--- a/src/gallium/drivers/nouveau/nvc0/nvc0_vbo.c
+++ b/src/gallium/drivers/nouveau/nvc0/nvc0_vbo.c
@@ -976,6 +976,7 @@ nvc0_draw_vbo(struct pipe_context *pipe, const struct
pipe_draw_info *info)
nvc0_update_prim_restart(nvc0, info->primitive_restart,
info->restart_index);
if (nvc0->base.vbo_dirty) {
+ IMMED_NVC0(push, SUBC_3D(NV10_SUBCHAN_REF_CNT), 0);
if (nvc0->screen->eng3d->oclass < GM107_3D_CLASS)
IMMED_NVC0(push, NVC0_3D(VERTEX_ARRAY_FLUSH), 0);
nvc0->base.vbo_dirty = false;
But I haven't the faintest clue why this helps. (I actually haven't tested on
Maxwell, but it helped on Kepler.)</pre>
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