I'm quite interested to see the results of the ROAM implementation you're working on. What qualifies as "small" with regard to your test terrains?
Does anyone else out there care to share any performance statistics they're getting out of their own Java3D CLOD terrain engines? Ideally, such numbers would be accompanied by the geometric/texture/lighting complexity of the terrains, the hardware/software it's running on, and (hopefully) a brief mention of the underlying algorithm in use (if it's not top secret, of course). Thanks, Bob --- Justin Couch <[EMAIL PROTECTED]> wrote: > Kevin J. Duling wrote: > > I'm under the impression that ROAM is CPU > intensive and not very > > GPU-friendly. > > Correct, sorta. At least here on this laptop (ATI > Rage M3/833Mhz CPU) it > seems to run reasonably well with the small terrains > I'm testing on. Not > sure what is taking the CPU time, but j3D always > runs as fast as > possible anyway with 100% usage. GPU friendly it is > not as it sends new > triangles to the card every time the viewpoint > moves. Those triangles > need to be clipped & culled for each frome, so at > least the GPU has > something to do :) So, yes, most of it is CPU bound, > not using the > hardware. However, throw some textures over the top > and you'll keep the > GPU happy for as long as it likes.... > > > I've done some reading into both ROAM and VIPM. I > haven't yet implemented > > either, but I've read a few articles recommending > VIPM over ROAM. > > Well, I'm taking the slut approach here - Paul sent > us the ROAM code, so > that's what I'm working with. Didn't bother looking > into anything else > at this stage. Once I get the ROAM done, I'll start > up the terrain list > and we can go from there discussing other algorithms > and optimisations > that could be done. Expect that to happen around the > end of the week. > > -- > Justin Couch > http://www.vlc.com.au/~justin/ > Freelance Java Consultant > http://www.yumetech.com/ > Author, Java 3D FAQ Maintainer > http://www.j3d.org/ > ------------------------------------------------------------------- > "Humanism is dead. Animals think, feel; so do > machines now. > Neither man nor woman is the measure of all things. > Every organism > processes data according to its domain, its > environment; you, with > all your brains, would be useless in a mouse's > universe..." > - > Greg Bear, Slant > ------------------------------------------------------------------- > > =========================================================================== > To unsubscribe, send email to [EMAIL PROTECTED] > and include in the body > of the message "signoff JAVA3D-INTEREST". For > general help, send email to > [EMAIL PROTECTED] and include in the body of the > message "help". __________________________________________________ Do You Yahoo!? Send FREE Valentine eCards with Yahoo! Greetings! http://greetings.yahoo.com =========================================================================== To unsubscribe, send email to [EMAIL PROTECTED] and include in the body of the message "signoff JAVA3D-INTEREST". For general help, send email to [EMAIL PROTECTED] and include in the body of the message "help".
