Am 06.01.2018 um 02:12 schrieb muyu:
> As suggested, I tried the Uberpov persistent feature to reduce parsing time. I
> replace the #declare with #persistent and also union all the objects. But still
> it need some time for parsing. Here I attached the scene (it is wheat crop
> field...relative small field). Could you please help have a look? Thanks a lot
> in advance. Shouyang

You absolutely positively need to wrap the `#persistent Foo = ...`
statements into `#ifndef(Foo) ... #end` blocks. Otherwise, it
effectively makes no difference whether they persist from frame to frame
because you're re-defining them over and over again.

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