FAQ

From Jig

(Frequently) Asked Questions

Why is the JIG Engine so slow?

Generally, the JIG Engine operates fast enough for most, if not all, of the projects undergraduate students will be developing. All of the demonstrations should run very fast (60 fps or better on a circa 2004 machine). However, there are a few things you can do to make sure you're running at top performance:

Use the latest version of the Java Runtime Environment

The JIG Engine requires Java 1.5, but will perform somewhat better with a more recent JRE.

Get the latest drivers for your graphics card

Some users have reported that the demonstrations ran as slow as 3 or 4 fps with the drivers they originally had installed on their machine, installing more recent drivers brought the speed of the demos up to the expectations above.

Set Java system properties

If you're using the J2DResourceFactory, you can often obtain better performance by setting the system property "sun.java2d.opengl" to "True". This is done for you programatically in the demos. You should see an informational message print to stdout when you program is run that says something like: OpenGL pipeline enabled for default config on screen 0