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dotCooCoo
b097c2a957
A raster mesh warp with Preserve Shape Using Transparency cuts an image into pieces with opacity masks and puts them in a knockout group, each piece knocking out its triangle. The reader gives the pieces no such mark, so each knocked out all that its image paints without its mask, and the file opened with most of the image hidden. The group of such pieces is now written without knockout. An image whose pixels are partly transparent draws its alpha twice only where neighboring pieces overlap.