ImageMagick: Fix alpha channel bug in PDF generation and upgrade to 6.3.9-2

[ricci@…]

Attached file fixes a bug when an image has an alpha channel and is converted to PDF. Attached patch (for Portfile) applies said file and uprevs to 6.3.9-2.

[ricci@…]

patchfile to fix bug in alpha channel usage when converting image to pdf.

[ricci@…]

patch to graphics/ImageMagick Portfile to apply alpha-channel fix and uprev to 6.3.9-2

[ryandesign@…]

Where did this patch come from? Is there an upstream bugreport for this already?

[ricci@…]

Replying to ryandesign@macports.org:

Where did this patch come from? Is there an upstream bugreport for this already?

I made the patch after walking through the coders/pdf.c to see where it writes out the SMask reference information and (reasonably carefully) counting new object outputs from there until the alpha channel information is written. I believe the patch is correct, though having another set of eyes on it would be all good. Upstream has a bug for this, see <http://www.imagemagick.org/discourse-server/viewtopic.php?f=3&t=9202>.

[ryandesign@…]

I updated ImageMagick to 6.3.9-5 in r34972 which I believe includes this fix. Please reopen this ticket if you still experience the issue with that version.

[ricci@…]

Indeed, it appears that 6.3.9-5 fixes this problem, thanks much!