Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!cwjcc!tut.cis.ohio-state.edu!cs.utexas.edu!vixen!joe
From: joe@vixen.uucp (Joe Hitchens)
Newsgroups: comp.sys.amiga.tech
Subject: BltMaskBitMap function needed
Message-ID: <254@vixen.uucp>
Date: 2 Feb 89 23:26:33 GMT
Reply-To: joe@vixen.UUCP (Joe Hitchens)
Organization: Ron's House, Austin TX
Lines: 25


I need source code for a function to blit from a source BitMap to a
destination BitMap through a mask.
What would be perfect is one that is identical to BltMaskBitMapRastPort()
except that instead of the destination being a RastPort, the destination
is a BitMap.
If some kind soul has done this and is willing to part with his code,
I would be tremendously grateful.

Or alternatively, I could use BltMaskBitMapRastPort() if I knew that there
was no significantly greater overhead in using it, when the RastPort in
question was allocated and initialized by my own code, i.e., not attached
to a Window, I allocated the RastPort & BitMap structures, and Raster data
myself.  I know that a Window's RastPort means that clipping will be done,
and that means slower performance.  If I built the RastPort myself without
attaching any Layer info to it, will it still be much slower than blitting
to a BitMap?  I want to handle the clipping myself.

Thanks in advance.

j.h.

-- 
joe@vixen.uucp
Artist, Sculptor, Animator of Sculpture, Iconologist Adept (Play Mechanoids!)