You are in uncharted territory. I have not tried compat_svr4 with sparc64,
   but I don't think that things being rendered wrong is a compat issue.
   Most probably it is an xserver problem.


there are a lot more things that can go wrong with a 32 bit emulation
layer in a 64 bit kernel.... i personally suspect some netbsd32 or
svr4_32 bug but it's hard to tell off hand...


.mrg.