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<b><a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO --- - KDE Konsole very slow scrolling with TearFree and QT graphics system native"
href="https://bugs.freedesktop.org/show_bug.cgi?id=77436#c75">Comment # 75</a>
on <a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO --- - KDE Konsole very slow scrolling with TearFree and QT graphics system native"
href="https://bugs.freedesktop.org/show_bug.cgi?id=77436">bug 77436</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>I think we will want to test next:
diff --git a/src/sna/gen7_render.c b/src/sna/gen7_render.c
index 3fcca3e..ad6ea32 100644
--- a/src/sna/gen7_render.c
+++ b/src/sna/gen7_render.c
@@ -2965,7 +2965,8 @@ fallback_blt:
if (too_large(extents.x2-extents.x1, extents.y2-extents.y1))
goto fallback_blt;
- if (can_switch_to_blt(sna, dst_bo, flags) &&
+ if ((sna->render_state.gen7.gt == 0 ||
+ can_switch_to_blt(sna, dst_bo, flags)) &&
sna_blt_copy_boxes(sna, alu,
src_bo, src_dx, src_dy,
dst_bo, dst_dx, dst_dy,</pre>
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