The following are limitations placed on the driver by PostScript:
PostScript does not support most raster operations (Rops). However, it does support BLACKNESS, WHITENESS, and SRCCOPY.
PostScript has a 750-point polygon limit. This number is reduced by two when filling with a hatch or pattern. This is because a clipping path must be built as well as the path to fill and stroke. In cases where this limit is reached, the driver will request that GDI simulate the polygon. This is very slow. Applications should avoid generating large polygons.