pdftoppm doesn't render eci_altona-test-suite-v2_technical2_x4.pdf correctly
Submitted by Thomas Freitag
Assigned to poppler-bugs
Created attachment 85262 regressions
The altona testsuite 2.0 PDF is not rendered correctly by pdftoppm, the PDF is available on http://www.eci.org/_media/downloads/altona_test_suite/eci_altona-test-suite-v2_technical2_x4.pdf. I marked some of the regressions in the attached result (rendered with 36 dpi only to make it as small as possible). Patch "D" of the test is solved with the patch of bug 34053, the regressions in patch "P" seem to be almost an openjpeg bug, s. bug 68438 or http://code.google.com/p/openjpeg/issues/detail?id=234. But the other regression should be all in the area "transparency groups", "knockout" and/or "blending mode". I'm not sure in the moment if the regressions have all the same reason or different reasons, but I'll try to solve them step by step.