Bad color and glitches on PPC64

Submitted by Mingcong Bai

Assigned to Nouveau Project

Created attachment 127816 WebGL coloring glitch.

Running some OpenGL programs on PowerMac G5 with NVIDIA GeForce 6600LE shows problematic rendering:

Wrong coloring, simply looks like inverts or blue/purple hue (WebGL demo, Plasma Discover, Compiz, Linthesia, etc.)
Text disappears (in the case of Plasma Discover).
Flickering and glitchy flashing texture in general (in the case of Linthesia).

This problem could be reproduced with Mesa 12.0.3 and 13.0.0 (which relates with another issue I have just reported in this section https://bugs.freedesktop.org/show_bug.cgi?id=98629).

Any how, some screenshots are provided below to demonstrate my issue.

Attachment 127816, "WebGL coloring glitch.":

Version: 13.0

To upload designs, you'll need to enable LFS and have an admin enable hashed storage. More information