convert Polygons to Triangles
more versatile geometry generator
make sure that parameters have a unique name
support for colored polygons
make debug output easier to enable/disable
Revert "honour object receive policy"

This reverts commit 5f26baee3925078cafe9586410c59a3e6b212b72.
Revert "handle object distribution in renderer base class"

This reverts commit c3747a78d3f3212a996df5f65a4f834dbdff1fc2.
fix local-only rendering

also make it the default
honour initial cerr/error output settings