(In reply to Michel Dänzer from comment #3)
> valgrind doesn't understand some (not very) recent AMD specific instructions
> yet. I build everything with -march=amdfam10 -mtune=native to avoid this.

Ok, I'll recompile wine and try again.

> Right, but video memory leaks are usually accompanied by corresponding
> system memory leaks, which can be caught by valgrind.

True, the game does noticeably leak system memory (1.5+ GiB footprint with
precompiled shaders vs 500 MB with mono)