denis@vlsisj.VLSI.COM (/) (09/07/89)
I wrote a little program that animates a dinosaur running across
the screen. The problem is that sometimes it crashes with the
guru #81000009 freeing memory already freed. If I remove one
of my calls to BltPattern then the problem appears to go away.
I looked at the documentation for this call in the RKM but it
has a very terse description. My question is: does BltPattern
clip to the destination or do I have to do this myself?
Denis Bohm (usenet: decwrl!vlsisj!denis)
(internet: vlsisj!denis@decwrl.dec.com)
--
Denis Bohm (usenet: decwrl!vlsisj!denis)
(internet: vlsisj!denis@decwrl.dec.com)dale@boing.UUCP (Dale Luck) (09/09/89)
In article <15304@vlsisj.VLSI.COM> denis@vlsisj.UUCP () writes: >My question is: does BltPattern >clip to the destination or do I have to do this myself? All graphics calls clip to the layer associated with the RastPort. If there is no RastPort, as in a screens bitmap then no clipping is done. -- Dale Luck GfxBase/Boing, Inc. {uunet!cbmvax|pyramid}!amiga!boing!dale