[Octave-bug-tracker] [bug #39535] FaceAlpha property not working for OpenGL backend

[Pantxo Diribarne]

Follow-up Comment #9, bug #39535 (project octave):

@Markus: sorry for the delay. I tested the patch and it works fine. The
limitations are clearly documented and I could see no measurable impact on
performance. Can you push this cset please?

I attached a patch that adds support for printing transparent patches to svg
at least. The "pdflatext(standalone)" format also seams to support polygon
transparency when rendered in Okular. Evince renders opaque surfaces and I did
not test in acrobat.

I tested with this:


clf
rectangle("position", [0.2 0.2 0.5 0.4], "facecolor", "g", "FaceAlpha",.3)
rectangle("position", [0.3 0.1 0.3 0.6], "facecolor", "y", "FaceAlpha",.3)
axis([0 1 0 1])
print /tmp/toto.svg
open /tmp/toto.svg
print -dpdflatexstandalone /tmp/toto.tex
cd /tmp
system ("pdflatex toto.tex")
system ("okular toto.pdf")


(file #42169)
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Additional Item Attachment:

File name: printalpha2.patch              Size:4 KB


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