The architecture of png2icns does not allow for proper support of 'retina' types. This is because a 'retina' icon may have two icons of size 256x256, 512x512, etc.
I have started a new program 'icnsutil' that clones the functionality of the mac developer tool 'iconutil' for creating 'retina' icns files. The rough outline of the code has been submitted to SVN.
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The architecture of png2icns does not allow for proper support of 'retina' types. This is because a 'retina' icon may have two icons of size 256x256, 512x512, etc.
I have started a new program 'icnsutil' that clones the functionality of the mac developer tool 'iconutil' for creating 'retina' icns files. The rough outline of the code has been submitted to SVN.