Hi, can someone who knows J3D inside shed some light on my questions? Thanks in advance.
I'm developing a 3D dynamic application based on Pure Immediate Mode. I first draw about 5000 triangles on GraphicsContext3D and then swap the corresponding Canvas3D. The "draw" action takes very little time, but the single "swap" action takes about 200 milli-seconds each loop, and that leads to a 5 FPS. I'm using IBM Thinkpad A22p Windows 2000, which has 900 MHz CPU, 384 RAM, ATI Mobility 128 video card, and DirectX 9.0. My questions are:
1. What factors can affect the speed of the "swap" function? The J3D internal rendering functions? The speed of the video card? DirectX or OpenGL?
2. Based on the number of triangles in my application and the machine I'm using, is it reasonable to get a 5 FPS performance? Can the popular J3D scene-graph mode provide a better performance than the pure immediate mode?
3. Is there any way I can do on the software side to speed up the "swap" function call?
Thanks,
Xuedong Din
IT, POS/Commerce
Borders Group, Inc.
734-477 4116
