ResizeQuality property seems much slower on Macs

[Mark Talluto]

On Feb 21, 2007, at 11:23 PM, Chipp Walters wrote:

> Mark,
>
> Not sure, but I think the new 'best' uses bicubic sampling and the
> previous 'best' uses bilinear. You might try using 'good' in 2.7.8 and
> seeing if it doesn't render the same as 'best' in 2.7.4
>
> Bicubic vs bilinear isn't near as big a dropoff in quality as Normal
> (nearest neighbor) vs bilinear.


Chipp,

On Macs in Rev 2.7.4, resizeQuality had no effect.  You could resize  
an image and never set that property and have a beautifully  
antialiased image.  In Rev 2.8 gm3 not setting the resizeQuality of  
an image makes it default to "normal" which as you said looks pretty  
bad.  To compensate for this change, you have to pick some setting.   
The only one that comes close to the 2.7.4 look is "best".  The only  
problem is that this slows down everything.  I need to some some  
benchmarking to see how bad it is.

One of my apps relies heavily on this feature and is getting hit hard  
by the extra processing time.  It has cause me to go back to 2.7.4  
for the Mac version of this particular app.  I appreciate the ability  
to control the antialiasing on the Mac, but really need the speed  
back even more.

I have BZ this:  4460


Mark Talluto
-- 
CANELA Software
http://www.canelasoftware.com