John, I found that my TNT2 64 model card with 32MB memory is not a full TNT2 card. It has 64 bit data interface in stead of 128 bit. I am running on a PIII, 913Mhz machine. I don't have many vertices nor texture mapping. I am rendering over 10,000 shape3D made of four 3D primitives (2 cones and 2 cylinders). I was wondering if the video card memory and speed will have impact on it. I am going to switch to Geforce2 MX to see any difference.
Thank you and those who made comments on this issue. At 06:59 AM 4/16/2002 -0500, you wrote: >Nitin, > >Yes, the "Dell M770" would indicate your monitor and the "Intel 82810" >would indicate the video card chipset. This surprises me that Lan >indicates his TNT2 is "nine" times slower than the Intel 82810 (which I >have heard is a terrible video chipset). Lan, what is the speed of your >CPU? Perhaps Lan is running on something like a 200 Mhz machine? > >Nitin, you ask what is "90% CPU bound". I was just trying to illustrate >a point. Certainly the Sun guys or others that know 3D better than I do >could explain better. Some operations are done by the CPU, some >operations are done by the graphics processor. An easy example is >texturing. If you put a texture on your model the display speed is very >much dependent upon the graphics processor (and available video memory). >If your video card doesn't support T&L (transform and lighting) then >rotating your object, calculating lighting will all be done via the CPU >(someone correct me if I'm not getting this quite right). > >I've observed our virtual world on several machines and it can be very >intriguing to see the performance change. Our world is what I'd call a >"balanced" application - lots of textures and lots of vertices. >Performance will drop like a rock when the video card runs out of memory >to hold textures. Cut back on the number of textures and performance >shoots back up. Add in an object with 100k vertices and do collision >detection picking against it and frame rates plummet (this part is very >CPU intensive). > >When you are first experimenting with 3D it can be very impressive the >difference in performance by just updating a video driver. (I think this >was more of an impact back in the TNT2 / Matrox G200 / Voodoo 2 days - >most modern (GeForce) drivers are fairly solid and I don't see a big >change from one driver version to another). > >Performance of Java 3D also depends on whether you are using the OpenGL >or DirectX version (and which operations you are using). > >- John Wright >Starfire Research > >"Nitin.Jain" wrote: > > > > Hi, > > > > I do not have any special Vedio card, I'm not sure how to find out which > > card is available on my Win 98 machine. I saw it under Control > > Panel/Disply properties/setting it shows "Dell M770 on Intel(r) 82810E > > Graphic Controller 4.12.01.2586". I guess this is the default card comes > > with Dell/Intel PIII machine.Is it the correct place to look for the > graphic > > card info? > > > > > you two are running is 90% CPU bound, not video card, then you could > > What is a 90% CPU bound? > > > > nitin > > > > > -----Original Message----- > > > From: John Wright [mailto:[EMAIL PROTECTED]] > > > Sent: Tuesday, April 16, 2002 1:11 AM > > > To: [EMAIL PROTECTED] > > > Subject: Re: [JAVA3D] regarding vedio card > > > > > > > > > Lan, > > > > > > Your TNT2 chipset is getting a bit "old". Newer video cards > > > can deliver > > > significantly better performance. During our development with Java 3D > > > we noticed significant improvements as we stepped from Matrox G200s, > > > thru Voodoo 3s to GeForce cards. The TNT2 is about on par with a > > > Voodoo3. With a GeForce 3 or 4 I could easily believe someone getting > > > ten times the performance that you are getting. (especially if you're > > > running a PCI not AGP interface). > > > > > > But the type of 3D scene makes a big difference. If you have lots of > > > vertices you'll need CPU and RAM memory, if you have huge textures > > > you'll need a powerful video card with lots of video memory. If what > > > you two are running is 90% CPU bound, not video card, then you could > > > upgrade and see very little difference. Perhaps Nitin also > > > has a faster > > > CPU? > > > > > > - John Wright > > > Starfire Research > > > > > > Lan Wu-Cavener wrote: > > > > > > > > Hi, everyone: > > > > > > > > I just realize this and would like to hear other experts' comment. > > > > Several days ago, Nitin Jain posted a test code which rendered 1000 > > > > spheres. I ran that code on my machine. the time it took to > > > show these 1000 > > > > spheres is 9 times slower than that he posted. This brought > > > the wonders > > > > that whether my graphic card is adequate for java3D > > > programming. I am > > > > supposed to render over 50,000 individual tree objects plus terrain. > > > > I have a NDivia TNT2 64Model 32 MB mem. card using PCI bus > > > (I don't know > > > > what this means because the card is listed as AGP card in > > > the sales invoice). > > > > > > > > Anyone cares for comment? Any comment is well welcome and > > > appreciated. > > > > > > > > Cheers! > > > > > > > > Lan Wu-Cavener > > > > Research Associate and Programmer > > > > Dept. of Landscape Architecture > > > > > > > > > > > ============================================================== > > > ============= > > > > 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". > > > > > > ============================================================== > > > ============= > > > 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". > > > > > > > =========================================================================== > > 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". > >=========================================================================== >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". Lan Wu-Cavener Research Associate and Programmer Dept. of Landscape Architecture =========================================================================== 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".
