chris (chris++at++scotch.physics.ucla.edu)
Fri, 25 Jul 1997 11:42:04 -0700
I have written a data visualization program which displays time dependent
vector field, isosurface, etc. data evolution. The time dependence is updated in
a forked Dbase process. The machine is an indigo2 max impact.
I'm finding the following hard to believe. Rendering a single timestep
of vector field data requires either 22,000 triangles, or 4100 lines, depending
on how I model the arrows. Both of these absolutely crush my frame rate. Draw
stage is about 200-300+ milliseconds.
What amazes me is that while the vector field scene modeled with 22,000 triangles
gives me about 3Hz frame rate, the vector field scene modeled with 4100 lines only
gives me 4-5Hz frame rate. This seems like a pretty negligible improvement!
Is this normal? I thought lines would be much easier to draw than arrows... I'm
wrong?
Chris Mitchell
UCLA Physics Department
LAPD Plasma Lab
310-206-1772
chrism++at++ucla.edu
http://scotch.physics.ucla.edu/~chris
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