firefox, scaled images, and performance?

[john wendel]

On 12/27/2010 01:59 PM, Konstantin Svist wrote:
> On 12/27/2010 01:32 PM, Tom Horsley wrote:
>> On Mon, 27 Dec 2010 13:13:24 -0800
>> Konstantin Svist wrote:
>>
>>> You're not crazy, you just didn't describe how to reproduce the problem.
>>> Using above example, open the Save Image dialog but don't bother
>>> browsing. Instead, just drag it around the screen in front of the image
>>> -- it's VERY slow compared to unscaled.
>> Yea, I discovered later that was a good way to notice problems
>> as well. It is kind of hard to guess exactly which things are
>> going to be slow. I wonder if this is another manifestation of
>> the cairo bug (628331). I'll have to try downloading the mozilla
>> binaries and see if I see the same slowdown.
>
> Most likely Firefox doesn't cache the scaled image -- so when you move a
> window on top of the image and Fx has to redraw, it has to scale it all
> the way down, first.
>

Sorry, if I'm confused, but I haven't followed this thread closely ...

I'm using Firefox 4 Beta 8 on F13 32-bit and I don't have any problems 
with huge scaled images. Single core P4 (not so fast).

Regards,

John