ATI and lightweight acceleration?

Hi all,

I’m trying to figure out if the lightweight acceleration provided by the last JOGL version works on ATI cards. I’ve tried the JRefract demo with Nvidia cards and everything works like a charm, but in two ATI cards, performance results are the same with previous JOGL versions.

Does anyone, with any ATI configuration managed to see improved lightweight performance? Does anyone know if this is a general driver problem for ATI cards?

N

I can confirm the same results with an ATI system. I have tried the demo with NVidia setup too, it seems to work great.

My ATI system specs:

  • Latest Sun JRE 5.0
  • ATI Radeon X800 Pro, with latest (5.2) Catalyst drivers
  • WinXP, SP2
  • AMD XP 3000+

The demo seems to update the OpenGL panel 1 or 2 times per second, so it clearly suffers of some problems. Notice that I’m using the default OpenGL driver settings.

I looked into this a little more and found that the setting of the GL_PACK_LSB_FIRST property was confusing ATI’s drivers, even though that property only applies to bitmaps and therefore wasn’t being used in this case. I just checked in a fix to GLJPanel, which is now looking pretty fast on ATI cards as well. This fix will be present in 1.1 b09.

[quote]This fix will be present in 1.1 b09.
[/quote]
To quote The Fast Show: Grrreaat.

Good job Ken! Hope the 1.1b09 release isn’t far…