I wrote:
> For jpgs you don't have to worry about it since we only
> deal with rgb images then, hence there's no difference (and no
> premul or un-premul takes place). It does matter for pngs with
> alpha though, and then it's fastest to deal with pngs embedded
> in eet. But I think the cost of disk access is likely a far
> greater factor than any premul/un-premul operations anyway.
I forget that the system you're dealing with is flash-drive
based, not disk-drive.. so maybe it might have some impact to have
to do the premul/un-premul conversions - if saving images with alpha
to png. Both premul and un-premul conversions use only ints though,
no floats.
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