I was able to get 0.46-0 working with retina resolution on OSX. It's pretty easy.
* replace Contents/MacOS/Pd with Tk 8.5 Wish.app binary: /System/Library/Frameworks/Tk.framework/Versions/8.5/Resources/Wish.app/Contents/MacOS/Wish
<key>NSHighResolutionCapable</key>
<true/>
* change package require Tcl version to 8.5 in Contents/Resources/tcl/pd-gui.tcl
Looking at the app bundle build script, it would only involve updating the wish-shell.tgz with the new Wish.app and renaming all instances of "Wish Shell" to "Wish" as I found "Wish Shell.app" is now a static link to "Wish.app".
The only problem I noticed is that the font at size 10 or less is so thin that it becomes illegible. I think simply bolding it on retina screens would work.
I wasn't able to find a way in tk to get the screen dpi, so maybe using the max screen size would work:
wm maxsize
If the width and height are greater than, say 2000 & 1500 then bold the small fonts? It's kind of dumb but might work.
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Dan Wilcox
@danomatika