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- Path: cph-2.news.DK.net!dkuug!dknet!usenet
- From: HHH@dk-online.dk (Hans Henrik Happe)
- Newsgroups: comp.sys.amiga.programmer
- Subject: Re: doubling pixels horizontally
- Date: 04 Mar 96 13:21:47 +0100
- Organization: Customer at DKnet
- Message-ID: <782.6637T801T2378@dk-online.dk>
- NNTP-Posting-Host: h9.dk-online.dk
- X-Newsreader: THOR 2.22 (Amiga;TCP/IP) *UNREGISTERED*
-
-
- Ludvig Pedersen ( ludvigp@ifi.uio.no ) wrote:
-
- > Is this slow?
-
- > ChangeVPBitMap(&MyScreen->ViewPort, ActiveBM, MyDBI);
-
- No I don't think so... I tryed to use Snoopy on ChangeScreenBuffer() ( which use ChangeVPBitMap(),
- and is the right way to make multi-buffering with intuition screens). I also had Snoopy to
- notify me if MrgCop() or MakeVPort() where called. When ChangeScreenBuffer is called
- the other two is not called. So what I think happens when you call ChangeVPBitMap()
- is that i updates the actual copperlist directly, and this is faaasst compared to the
- old way (before OS3+ ) of multi-buffering!
-
- btw. I also found out that NemacIV use ChangeScreenBuffer() - way to go!!!
-
-
- Hans Henrik Happe
- Goat / Sumpen
-
- You can kill the human race, but you can't kill the AMIGA.
-
-