Framerate drops down with JSR-231 on Windows

OpenGL Development JOGL Development
#1

Hi all,

I’ve switch over to JSR-231 but I’ve noticed a strang behaviour on Windows. At a certain amount of GLCanvas size the frame rate drops dramaticly down.
In my test I have a small scene which is rendered with smooth 100 FPS on a 575px * 575px - sized GLCanvas. The frame rate goes down to 5 FPS or below on a 576px * 575px - sized GLCanvas. This happens only on Windows and even to the Gears-demo.
Any ideas on this? Are there any memory/cache limitations which could cause this? With JOGL 1.1 everything worked fine.

Thanks,
gerd

#2

Are you running with -Dsun.java2d.noddraw=true on the command line? Does that change the behavior?

What graphics card? Are you running the latest drivers from your vendor? What is the output of java -Djogl.verbose demos.printext.PrintExt?