Window code issue

Andreas Raab raab at luxator.cs.uni-magdeburg.de
Sat Dec 26 00:27:08 UTC 1998


> > Our problem is very slow drawing, which was unexpected for the BeOS. We
> > don't want to change the automatically generated interp.c, so we need to
> > fix this in one of the machine specific calls.
> Don't forget that it is entirely possible that the 'copy a big bitmap from
> here to there on the screen' might not be as well optimised as other parts
> of the system.

But on most systems, displaying bitmaps is a crucial part of the graphics
interface and usually pretty fast. You might check out different host
display depths in combination with different Squeak display depths since a
bad combination may dramatically affect performance (try using Squeak's
16bit display depth with a 6-5-5 or 5-6-5 host depth ;-)

  Andreas
-- 
Linear algebra is your friend - Trigonometry is your enemy.
+===== Andreas Raab ============= (raab at isg.cs.uni-magdeburg.de) =====+
I Department of Simulation and Graphics      Phone: +49 391 671 8065  I
I University of Magdeburg, Germany           Fax:   +49 391 671 1164  I
+=============< http://isgwww.cs.uni-magdeburg.de/~raab >=============+





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