[Chromium-dev] disparate colors using Windows->Onyx4

[<aac...@ad...>]

Hello Chromium community,
 
We are setting up Chromium to run (mothership and crappfaker) on a Windows box and the crserver on an SGI Onyx 4 with IRIX. 

When running some applications, the colors that show-up on the Onyx 4 rendering nodes have disparate colors and apparent dithering.  Many OpenGL programs such as Atlantis, City, etc, do not have any color variations at all.  BUT, some important in-house applications and other third-party applications do not show the color-schemes one would expect.  Oceans that normally appear blue on a globe, might look purple, etc when passed through Chromium and displayed on the Onyx 4 crserver. 

Not all colors are off, but noticeably some are.     

I was wondering if anyone has seen this effect before?  I know I'd seen displays show all-white when textures could not be rendered due to video-card problems, but I haven't seen color-abnormalities like are appearing now.

The video cards on the 2x2 SGI display are not all the same.  Two of the video cards are Firegl GL X2 and two of the other video cards are Firegl GL X1.  The Windows box also has a Firegl GL X1. 

Some of the ideas to fix this problem have been:

Big-endian, Little-endian...perhaps going between Windows to Onyx results in some kind of color-transformation via the Big-endian, Little-endian of the color values?

We bought an identical Video card for the Windows machine, in the hopes that that would ensure identical color-map for both the Onyx and Windows machines.  Apparently that was not the issue either, as everything still has the same color difficulties.

Does the Windows box have one color-map, and the Onyx a different color map that is being referenced that would cause these problems?

Let me know if you have any ideas.

Thanks so much for your help,
Alicia