Etnaviv: MSAA working!
All the MSAA (Multi-sampling anti-aliasing) crash bugs appear to have been resolved, and every game I tried it with works! As the GCW Zero has a 320 by 240 screen, it is a prime candidate for anti-aliasing.
quake with MSAA 1x
quake with MSAA 2x
quake with MSAA 4x
In case a game doesn't have a configuration option to set MSAA, it can be forced through debug flags in the following way
There is a small penalty to the frame rate when enabling MSAA, but as most of the (older) games on GCW appear to be vertex or CPU limited, it is acceptable.