[Mesa3d-users] rendering artifacts mesa vs hardware

[burlen <bur...@gm...>]

I would like to report an issues I see when I replace hardware rendering 
in my app with mesa. I am new to mesa so I am not sure where the bug 
lies, in the app or mesa. So I suspect it may be in mesa because 
hardware rendering works fine , I have doubts because I don't know if 
the app does anything special when it uses mesa. I hope some one here 
can say for sure weather or not it's a mesa issue.

The issue is strong artifacts appear on the surface of rendering tubes. 
zooming in makes the artifacts recede to the edges of the tubes but 
never completely go away. Here is an illustration of the artifacts and a 
hardware rendering that doesn't have the artifacts.

http://nashi-submaster.ucsd.edu/movies/PV/tube-filter-artifact/mesa-artifacts.png
http://nashi-submaster.ucsd.edu/movies/PV/tube-filter-artifact/nvidia-no-artifacts.png

By the way, I reproduced on two machines with intel and gcc compiler and 
two mesa version 7.5.1 and 7.7.