CWGraph3D Slow With New Video Card

[dlittle]

I have an application that uses a CWGraph3D to plot data that is usually 300 x 300 data points.  It used to work fine, but I've recently bought a computer with a nVidia GeForce 7600 GT and another computer with a nVidia GeForce 7900 GS, and the graphs plot so slow that the application is unusable.  I also have another computer with a nVidia GeForce 7800 GTX and it runs fine.  If I swap in one of the other video cards to this computer, then the application is unusable, which makes me think the graphics card is the problem.  Is there any documentation that says what kind of graphics cards should be used so that the graphs will work?  Is there a way to get the graphs to work with these graphics cards other than turning off hardware acceleration?

[Brandon_V]

Hi TheDoug,

There is documentation that states which video cards work with these graphs because realistically, they should all work, but they are of course limited by the card with what type of frame rate you will see as your points you plot grow larger. I noticed you said you are plotting around 300 X 300 data points, but does this same behavior occur in our example programs that plot less data points than this? If the example programs work fine, it would not be a compatibility problem but instead would be a limit of the video cards themselves. The only way to fix this on the non-working video cards would be to limit the amount of points you are plotting or, as you stated, turn off hardware acceleration.

Regards,

Brandon Vasquez
Applications Engineer
National Instruments
http://www.ni.com/support