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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - [i915] Feature request: Add support for fencing for PRIME setups"
href="https://bugs.freedesktop.org/show_bug.cgi?id=95472#c64">Comment # 64</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - [i915] Feature request: Add support for fencing for PRIME setups"
href="https://bugs.freedesktop.org/show_bug.cgi?id=95472">bug 95472</a>
from <span class="vcard"><a class="email" href="mailto:mario.kleiner@tuebingen.mpg.de" title="Mario Kleiner <mario.kleiner@tuebingen.mpg.de>"> <span class="fn">Mario Kleiner</span></a>
</span></b>
<pre>So Michel was right, and with the attached patch, page-flipped renderoffload
works nicely on Intel Haswell + AMD Tonga under amdgpu-kms, flips properly
waiting on the dmabuf fence for longer running rendering. I also retested Intel
Ivybridge + AMD Cedar under radeon-kms and Intel Ironlake + GeForce 330M under
nouveau-kms to make sure it doesn't cause other problems.
Maybe we can still get this into Linux 4.8-rc6? That would be splendid.
I'll also attach a hacky patch on top of Chris eb-fences branch which seems to
remove the Z-Tearing for windowed copy-swaps - and replaces it be the regular
horizontal tearing we always have with DRI3/Present, even for single gpu,
because we are too slow to get blitting started ahead of scanout.</pre>
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