[Bug 77436] KDE Konsole very slow scrolling with TearFree and QT graphics system native

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=77436

--- Comment #129 from Chris Wilson <chris at chris-wilson.co.uk> ---
Time for something different:

diff --git a/src/sna/kgem.c b/src/sna/kgem.c
index 7a7e2f2..52e78f2 100644
--- a/src/sna/kgem.c
+++ b/src/sna/kgem.c
@@ -3369,6 +3369,9 @@ void _kgem_submit(struct kgem *kgem)

        kgem_reset(kgem);

+       if (kgem->scanout_busy)
+               isItTimeToYield = TRUE;
+
        assert(kgem->next_request != NULL);
 }

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