modules/checkers: fix radcache partial initialization bug

Running something like:
'--module=checkers,size=64,fill_module=shapes,style=circle --defaults --go'

Would show some artifacts in the top portion of the filled cells
at certain phases of the spining shape.  This was introduce by
the radcache, and it's caused by the overhanging tiles on the
perimeter and how their being clipped was carrying into the
radcache contents then used for all subsequent renders.

This commit just makes setting radcache.initialized conditional
on the incoming fragment being a full-frame fragment as a quick
fix.  See comment for more info on what to do long-term.

0 files changed, 0 insertions, 0 deletions