[systemd-devel] [PATCH v2 6/8] add GOP mode setting and splash drawing support

Kay Sievers kay at vrfy.org
Thu Jan 23 03:43:14 PST 2014


On Thu, Jan 23, 2014 at 11:52 AM, Tom Gundersen <teg at jklm.no> wrote:
> On Thu, Jan 23, 2014 at 10:42 AM, Joonas Lahtinen
> <joonas.lahtinen at linux.intel.com> wrote:
>> On 17.01.2014 14:22, Tom Gundersen wrote:
>>> We could then special case the particular bitmasks that
>>> correspond to BGRX and skip the loop. Does that sound like something
>>> you could work with?
>>
>> This sounds like a feature worth implementing to me.
>>
>> It'd require passing some option/information to instruct to skip blending
>> even though the image is BGRA and just copy the alpha channel as is (it just
>> gets discarded by UEFI BGRX format). Opinions on how to implement that?
>
> Maybe just set the alpha channel bitmask to 0?

With the latest numbers where the blending version only adds 10ms, I
would like to see new data with an optimized compilation and a
non-alpha blending case, before we introduce any further special-case
magic.

I'm not really convinced at that moment that all of this special
casing is not a premature optimization.

Kay


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