https://bugs.documentfoundation.org/show_bug.cgi?id=44729
--- Comment #22 from Dave Gilbert <[email protected]> --- As per comment 7, this is using PDFs transparency group feature, which is all very complex; but in this case we've got two symptoms: a) The colour of the overlayed circles b) The big black square My reading of the PDF code is that it: 1) Sets up a graphics state by rendering a 50% black full size rectangle as a softmask - that mask is marked with /S /Alpha - which means it should only ever influence the alpha value. This is marked as a transparency group at one level 2) It then sets the current colour to a pattern consisting of the filled/stroked circle - that's non-transparent; then does a rectangle that happens to be filled with that pattern of the circle - which seems crazy complex. But somehow this pair marked as transparency groups is supposed to come together as the transparent circles. But the symptom (b) of the big black square is I think a screwup in (1) - where the creation of that softmask shouldn't do anything except change transparency; so perhaps we can cure (b) without fully fixing the group setup. -- You are receiving this mail because: You are the assignee for the bug.
