Enrique Dumas wrote: > I'd like to know how many FPS we can expect with a > ROAM algotithm : I currently have a map which size is > 80 * 80 quads and my FPS on a PIII 800 with geforce II > is "only" 10-11 FPS (I am using j3d 1.2.1_03 on win98) > without moving the terrain
Similar hardware, except it's a laptop running an ATI Rage M3 - ie no h/w T&L and pretty crap texturing. On lit, shaded, coloured, but no textures TriangleArrays using GeomByRef the code is getting roughly 40fps. Canvas size is about 200x300 pixels but I don't appear to be fillrate bound because it doesn't change when I size the window bigger. The underlying terrain size is 513x513 grid points (ie 512x512 quads) > I don't know why but I'd like > to know if there are others tricks to apply to expect > a better FPS (my geometry is triangleStripArray) Take a look at the code in org.j3d.terrain.roam for some hints :) Ideally you could use that code in your application rather than writing your own and you can help contribute some development time to optimising it :) I'm just in the process of dumping the latest javadocs to http://code.j3d.org/javadoc/ > I tryed to use the view frustrum culling from j3d but > I am at this time at the same point !!! Our roam algorithm does VFC manually. Paul wrote this nice frustum model that can handle multiple canvases and gives you a fast IN/OUT/CLIP test for visibility. -- 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".
