From: Eric Anholt <eric@anholt.net>
Cc: Boris Brezillon <boris.brezillon@bootlin.com>,
dri-devel@lists.freedesktop.org
Subject: Re: [PATCH 2/3] drm/vc4: Force ->x_scaling[1] should never be set to VC4_SCALING_NONE
Date: Thu, 08 Nov 2018 06:52:44 -0800 [thread overview]
Message-ID: <87va57oc3n.fsf@anholt.net> (raw)
In-Reply-To: <20181024100505.22436-2-boris.brezillon@bootlin.com>
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Boris Brezillon <boris.brezillon@bootlin.com> writes:
> For the YUV conversion to work properly, ->x_scaling[0,1] should never
> be set to VC4_SCALING_NONE, but vc4_get_scaling_mode() might return
> VC4_SCALING_NONE if the horizontal scaling ratio exactly matches the
> horizontal subsampling factor. Add a test to turn VC4_SCALING_NONE
> into VC4_SCALING_PPF when that happens.
>
> Fixes: fc04023fafec ("drm/vc4: Add support for YUV planes.")
> Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
I couldn't find a spec justification for this -- did you have a testcase
that fails?
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next prev parent reply other threads:[~2018-11-08 14:52 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-24 10:05 [PATCH 1/3] drm/vc4: Set PPF scaling when the source image is only vertically scaled Boris Brezillon
2018-10-24 10:05 ` [PATCH 2/3] drm/vc4: Force ->x_scaling[1] should never be set to VC4_SCALING_NONE Boris Brezillon
2018-10-24 10:06 ` Boris Brezillon
2018-11-08 14:52 ` Eric Anholt [this message]
2018-11-08 14:56 ` Boris Brezillon
2018-11-08 15:12 ` Eric Anholt
2018-11-12 10:20 ` Dave Stevenson
2018-11-12 10:24 ` Boris Brezillon
2018-10-24 10:05 ` [PATCH 3/3] drm/vc4: Prefer PPF over TPZ when dst >= 2/3 src Boris Brezillon
2018-11-08 15:18 ` Eric Anholt
2018-10-24 15:02 ` [PATCH 1/3] drm/vc4: Set PPF scaling when the source image is only vertically scaled Boris Brezillon
2018-11-07 17:08 ` Eric Anholt
2018-11-08 9:41 ` Boris Brezillon
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