From mboxrd@z Thu Jan 1 00:00:00 1970
From: bugzilla-daemon@freedesktop.org
Subject: [Bug 97988] [radeonsi] playing back videos with VDPAU exhibits
deinterlacing/anti-aliasing issues not visible with VA-API
Date: Mon, 03 Oct 2016 17:55:57 +0000
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Date: Mon, 3 Oct 2016 17:55:57 +0000
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https://bugs.freedesktop.org/show_bug.cgi?id=3D97988
--- Comment #13 from Marek Ol=C5=A1=C3=A1k ---
(In reply to Tom Stellard from comment #12)
>=20
> I think the best solution here would be to teach the backend how to do a
> scalar select based on value of vccz.
You are missing the point. The condition code (VCC) isn't the same across a=
ll
threads. The problem is that the conditional assignment is transformed into=
a
form that makes descriptor load addresses non-uniform (dependent on a VGPR).
There is nothing the AMDGPU backend can do about it. It's not a problem in =
the
backend.
--=20
You are receiving this mail because:
You are the assignee for the bug.=
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Date: Mon, 3 Oct 2016 17:55:57 +0000
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X-Bugzilla-URL: http://bugs.freedesktop.org/
Auto-Submitted: auto-generated
Commen=
t # 13
on bug 97988<=
/a>
from Marek Ol=C5=A1=C3=A1k
(In reply to Tom Stellard from comment #12)
>=20
> I think the best solution here would be to teach the backend how to do=
a
> scalar select based on value of vccz.
You are missing the point. The condition code (VCC) isn't the same across a=
ll
threads. The problem is that the conditional assignment is transformed into=
a
form that makes descriptor load addresses non-uniform (dependent on a VGPR).
There is nothing the AMDGPU backend can do about it. It's not a problem in =
the
backend.
You are receiving this mail because:
- You are the assignee for the bug.
=
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