From: Hans Verkuil <hverkuil@xs4all.nl>
To: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Cc: linux-media@vger.kernel.org
Subject: Re: VIVID bug in BGRA and ARGB
Date: Fri, 18 Dec 2015 01:04:31 +0100 [thread overview]
Message-ID: <56734D8F.2030209@xs4all.nl> (raw)
In-Reply-To: <1450393444.28544.3.camel@collabora.com>
On 12/18/2015 12:04 AM, Nicolas Dufresne wrote:
> Hi Hans,
>
> while testing over color formats VIVID produce, I found that BGRA and
> ARGB the alpha component is always 0, which leads to black frames when
> composed (when the background is black of course). Is that a bug, or
> intended ?
Depends who you ask, I guess.
Anyway, the alpha value can be set through a user control (Alpha Component),
which is indeed by default 0. I wonder if I should set it to 0x7f by default.
This still maps to 0 for 1-5-5-5 ARGB formats, though.
Suggestions are welcome.
Regards,
Hans
prev parent reply other threads:[~2015-12-18 0:04 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-12-17 23:04 VIVID bug in BGRA and ARGB Nicolas Dufresne
2015-12-18 0:04 ` Hans Verkuil [this message]
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