Ugh... Qt4 porting
zrusin at trolltech.com
Mon May 16 17:14:06 BST 2005
On Monday 16 May 2005 11:35, Mosfet wrote:
> Lars wrote:
> > I said the math behind it is trivial. And yes, I do think that
> > changing code to handle the premultiplied values instead of non
> > premultiplied ones should in almost all cases be not too hard.
> Except it doesn't really work, as has been pointed out ;-)
And Lars pointed out, if you convert back and forth anyway then 8bit
precision is not enough in the first place.
> This is how I see things: You have an image format that is really
> fast with a paint device and XRender but that modifies the pixel
> values in a way that looses precision getting original RGB values
And again, as Lars pointed out the loss resulted from this will not
result in something that is visually different.
> And I still want my create()
As pointed out to you, it's really useless.
> and jumpTable() methods back,
That's even more.
> possibly a pointer to the colorTable QVector data so you don't have
> to use copies ;-)
Where's that an issue?
"Intelligence is the ability to avoid doing work, yet getting the work
done". --Linus Torvalds
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