Starting with 093bd18bd923644fcd25c507088c0ebc63b4c320 the attached PDF file is rendered without its drop shadow when converted to pkmraw. Converting to ppmraw works as expected. The command line I'm using for testing: bin/gs sDEVICE=pkmraw -o test.pkm -r300 ./testdrop.pdf
Created attachment 13421 [details] testdrop3.txt Greatly simplified file. We start with a simple cyan background, then plot a black rectangle drawn on top of it, using Multiply blendmode, with an overprint mode of 1. gs -sDEVICE=ppmraw -o out.ppm -r72 testdrop3.pdf shows the rectangle as expected. gs -sDEVICE=pkmraw -o out.pkm -r72 testdrop3.pdf shows no markings from the rectangle.
Created attachment 13426 [details] testdrop5.pdf Better example file (silly typo fixed).
Fixed in: commit af3c1d10726b2d932d951bf021193cbd5bcc734d Author: Robin Watts <robin.watts@artifex.com> Date: Fri Feb 24 19:05:52 2017 +0000 Bug 697048: Fix compatible overprint blend mode. Fix from Michael Vrhel. Compatible overprint is operating in subtractive color spaces, so a 'zero' component actually means 0xFF.