<html>
<head>
<base href="https://bugs.freedesktop.org/">
</head>
<body>
<p>
<div>
<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - Lag on terminal with compositing after 1f6dfc9"
href="https://bugs.freedesktop.org/show_bug.cgi?id=97299#c6">Comment # 6</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - Lag on terminal with compositing after 1f6dfc9"
href="https://bugs.freedesktop.org/show_bug.cgi?id=97299">bug 97299</a>
from <span class="vcard"><a class="email" href="mailto:chris@chris-wilson.co.uk" title="Chris Wilson <chris@chris-wilson.co.uk>"> <span class="fn">Chris Wilson</span></a>
</span></b>
<pre>Yup, in mesa/dri3 there is no synchronisation yet.... It needs something like
diff --git a/src/loader/loader_dri3_helper.c b/src/loader/loader_dri3_helper.c
index 2f09431..3315828 100644
--- a/src/loader/loader_dri3_helper.c
+++ b/src/loader/loader_dri3_helper.c
@@ -554,8 +554,17 @@ loader_dri3_wait_x(struct loader_dri3_drawable *draw)
struct loader_dri3_buffer *front;
__DRIcontext *dri_context;
- if (draw == NULL || !draw->have_fake_front)
+ if (draw == NULL)
+ return;
+
+ if (!draw->have_fake_front) {
+ struct loader_dri3_buffer *back = dri3_back_buffer(draw);
+
+ dri3_fence_reset(draw->conn, back);
+ dri3_fence_trigger(draw->conn, back);
+ dri3_fence_await(draw->conn, back);
return;
+ }
front = dri3_fake_front_buffer(draw);
dri_context = draw->vtable->get_dri_context(draw);
to flesh out glXWaitX().</pre>
</div>
</p>
<hr>
<span>You are receiving this mail because:</span>
<ul>
<li>You are the QA Contact for the bug.</li>
</ul>
</body>
</html>