Hello,

> Okay, then here's an enhancement that could have saved me a heck of a 
> lot of time:
> 
> Add to form > pixelAt:   the comment:
> 
> "If you need to do this many times, make your own instance of BitBlt as 
> is done below and use it repeatedly. Look at 'senders of: BitBlt: 
> bitPeekerFromForm: "
> 
> Benchmark wise, an implementation of the above wiped the floor with even 
> my "FastColorConvert" which implemented a 100% custom implementation 
> from the raw BitMap. =P

  As I wrote, if what you're doing is some kind of "color convert", a
BitBlt operation with proper color map *may* do it in one call.

> Currently the biggest hog in that part of the program is "rawLuminance" 
> a custom addition to Color, which is basically the same as Luminance but 
> without the weighting.

  A Bitmap table (color map) with 32768 entries may work for your
project...

-- Yoshiki