nanogui: slowness of linedraw and < 100Mhz machines
Subject:
slowness of linedraw and < 100Mhz machines
From:
"Aaron J. Grier" ####@####.####
Date:
17 Feb 2003 21:13:32 -0000
Message-Id: <20030217210234.GQ20557@aaron.unix.fryenet>
I just merged with 0.89 and found it necessary to pull up some local
line draw changes. we had replaced the per-pixel clipping with
cohen-sutherland method and got over 100 times speedup. unfortunately
the decided-upon dashed-line API ended up being a little different than
ours, and I'm still recovering from that, but I will produce patches
when that is completed.
I want to stir the hornet's nest a little and ask why nano-X's
performance in key areas like line and text draws is so pathetic. is
everybody here running 100MHz+ CPUs where slow algorithms don't make a
difference? we're saddled with a 25MHz 68331 and a SED1355 dumb frame
buffer with no DMA, but I can't be the only one with such meager
hardware working with nano-X. or can I?
--
Aaron J. Grier | Frye Electronics, Tigard, OR | ####@####.####