[Chikuzen]

Originally Posted by jpsdr

But this is used only inside nnedi3, as nnedi3_rpow2 is "just" calling nnedi3. If it was this (and i agree for the possibility), shouldn't nnedi3 in that case also have corruption ? But it seems it's not the case.

env->Invoke does not automatically insert a cache after the filter you invoke.

It seems that avisynth can't handle automaticaly a filter which invoked from other filter.
If it's possible, why plugin author have to call "InternalCache" manually ?
I don't think Avisynth+ can choose MT mode appropriately on invoked filter though it cannot insert internal cache automatically.

Any advice, clue, very global ideas like (function "xxx" and "yyy" are a good start to look) is welcome.
Basicaly, the 1rst step would be, how doing properly what it's doing (creating using/buffer).

TCannyMod ?
tcanny uses PlanarFrame hack and floating point read/write buffer allocated on constructor.
I removed them and change allocate buffers per each GetFrame().