Yes, it is of course only specific to MBP (though I heard the new iMacs and MBA will be Retina too).
But other games usually offer a choice to use full-resolution mode in fullscreen, even older games that cannot be aware of Retina. If I understand correctly, these games request a list of all possible video modes from the system. Minecraft looks like it doesn't do so, it uses the fullscreen video mode of what it perceives as a desktop resolution (which OS X reports as 1440x900 for compatibility with older apps), but NOT what it percieves as a maximum video mode supported by the system (which is 2880x1800).
So, there are two possible solutions:
1) Use maximum supported fullscreen resolution mode instead of perceived desktop resolution. or
2) As a workaround, permit the user to force desired video mode through options.txt (or even better, in Video Settings menu).
The second option is maybe preferable because it can be used for other purposes: e.g. when a user wishes to play fullscreen but his system is too old/slow to let him be comfortable with his desktop resolution, so he may wish to use reduced resolution for fullscreen video mode.
MC-32327
Yes, it is of course only specific to MBP (though I heard the new iMacs and MBA will be Retina too).
But other games usually offer a choice to use full-resolution mode in fullscreen, even older games that cannot be aware of Retina. If I understand correctly, these games request a list of all possible video modes from the system. Minecraft looks like it doesn't do so, it uses the fullscreen video mode of what it perceives as a desktop resolution (which OS X reports as 1440x900 for compatibility with older apps), but NOT what it percieves as a maximum video mode supported by the system (which is 2880x1800).
So, there are two possible solutions:
1) Use maximum supported fullscreen resolution mode instead of perceived desktop resolution.
or
2) As a workaround, permit the user to force desired video mode through options.txt (or even better, in Video Settings menu).
The second option is maybe preferable because it can be used for other purposes: e.g. when a user wishes to play fullscreen but his system is too old/slow to let him be comfortable with his desktop resolution, so he may wish to use reduced resolution for fullscreen video mode.