Xref: utzoo unix-pc.general:3908 comp.sys.att:7816 Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!mailrus!uwm.edu!rpi!image.soe.clarkson.edu!dean From: dean@image.soe.clarkson.edu (Dean Swan) Newsgroups: unix-pc.general,comp.sys.att Subject: Re: general purpose bit blitter Message-ID: <1989Oct19.161204.3420@sun.soe.clarkson.edu> Date: 19 Oct 89 16:12:04 GMT References: Sender: dean@sun.soe.clarkson.edu (Dean Swan) Organization: Clarkson University, Potsdam, NY Lines: 15 Along the lines of RAM access, I need to plot waveforms and such in a window. I wrote a line drawing routine that calls WRASTOP, but it is painfully slow. I suspect that it is because WRASTOP issues a refresh to the window, before doing a blit evertime it is called. I've thought about reimplementing it to build a bitmap in user memory of the line and then just doing a single WRASTOP call to copy it to the window, but that seems like an awful lot of work just to draw a line. Can anyone help? -Dean Swan dean@sun.soe.clarkson.edu P.S. This is on a 7300. Also, pleas e-mail any posted replys. I don't always get to check the news often enough and sometimes miss it. Thanx in advance...... :-)