There is also this quote on the same thread: "...they should be forward compatible as well; if there are objects or constructs in a file that is not understood by the version, it is ignored. With all of that being said, there have been so many changes between 2.3x and 2.4x, I personally think it would be a miracle."
With open source you get what you pay for. It is all fine and dandy to claim forwards compatibility but if it doesn't work in practice or your scenes get corrupted then you have no recourse except to dive into the code and fix it yourself. ;-) I think commercial companies avoid forward compatibility because it doesn't really benefit you to invest significant engineering resources to support customers who are not upgrading. (and the upgrade cycle is what allows commercial software companies to invest in new features) Open source is not necessarily market driven or resource bound so they (individual contributors) are free to do whatever they want. If you are doing something as a hobby then why no jump in and have a stab at making a forwards compatible file format. If it doesn't work in practice then no big deal and the devs probably learned a lot by trying. Hell, if I were designing a new file format for 3D I would probably try to structure things so that I could load unrecognized objects/data and have it preserved if the file gets written out again. It would be a nice feature to have but obviously wasn't at the top of the list when Maya and Soft were developed. ;-) -- Brent From: [email protected] [mailto:[email protected]] On Behalf Of Ed Schiffer Sent: 17 April 2012 15:44 To: [email protected] Subject: Re: 2013 save scene = no load in 2012? just to tease with a sad opensource gracefulness: "The blend file format is made especially for backward and forward compatibility." http://blenderartists.org/forum/showthread.php?88396-Transfer-From-Different-Blender-Versions.&s=d7921a05b3276ab49f1c70ff874313cc didn't test myself, though
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