wined3d: Check the writemask before activating the oC0 optimization.
[wine] / dlls / msvcr100 /
drwxr-xr-x   ..
-rw-r--r-- 239 Makefile.in
-rw-r--r-- 1272 msvcr100.c
-rw-r--r-- 62588 msvcr100.spec