The premultiplied alpha issue should now also be fixed. On Fri, May 24, 2013 at 10:10 PM, Michael Henning <drawoc@xxxxxxxxxxxxxxxxxx> wrote: > Elle: > I think I just fixed the two issues you mentioned (exporting with > layers and importing grayscale tiffs). Could you grab the latest code > and test those again, to confirm that they're fixed? > > (Note that there's an additional problem related to importing with > premultiplied alpha that I'll haven't fixed yet.) > > -- drawoc > > On Fri, May 24, 2013 at 1:03 PM, Elle Stone <l.elle.stone@xxxxxxxxx> wrote: >> On 5/24/13, Mukund Sivaraman <muks@xxxxxxxx> wrote: >>> The following file plug-ins have been revised to use GIMP's new API. >>> I feel they need more testing as the changes are intrusive and the file >>> types can support a variety of pixel formats. I have tested these to my >>> satisfaction. Please test these if you can (master branch). >> >>> * file-tiff-save (test saving grayscale, RGB and indexed TIFF files >>> incl. 16-bits per channel in the case of non-indexed) >> >> Tiff vary a bit in their internal structure, depending on which >> software generates the tiff, yes? So I'm planning on testing tiffs >> from several sources. >> >> I'm using Gentoo Linux. I rebuilt babl, gegl, and Gimp 2.9 from git >> this morning. So far I've tested some old 8-bit and 16-bit single >> layer tiffs that were created using Photoshop CS2 under Windows 2K (I >> did say old!): >> >> *8-bit and 16-bit color tiffs opened and exported properly; I was able >> to open the exported files with showFoto and each file looked right >> and had its appropriate bit depth. >> >> *converting 8-bit tiff to 16-bit tiff and exporting worked. >> >> *converting tiff to indexed and exporting worked. >> >> *converting 8-bit and 16-bit color tiffs to grayscale and exporting >> worked; the exported file opened with showFoto and looked exactly as >> expected. However, opening the exported 8-bit and 16-bit >> color-to-grayscale tiffs (that Gimp has just exported) with Gimp >> instead of showFoto didn't work. The images were too light in >> tonality, looked like they had been given a gamma 2.2ish correction. >> Upon exporting the newly opened grayscale image under a new name, the >> exported image then was also wrong in showFoto (showFoto can't >> actually work with or save grayscale image, instead converts to RGB >> before displaying the image). >> >> *Tiffs can support multiple layers and higher than 16-bit precision, >> which is not to say that Gimp is obligated to support these options. >> Exporting a two-layer tiff didn't work. Only one layer was exported >> and only about a third of the image on that layer was exported >> properly. Also changing precision to 32-bit floating point and >> exporting as a tiff resulted in a 16-bit tiff. >> >> Elle >> _______________________________________________ >> gimp-developer-list mailing list >> gimp-developer-list@xxxxxxxxx >> https://mail.gnome.org/mailman/listinfo/gimp-developer-list _______________________________________________ gimp-developer-list mailing list gimp-developer-list@xxxxxxxxx https://mail.gnome.org/mailman/listinfo/gimp-developer-list
