[PD] Extended View toolkit : issue with masks

[Etienne Landon]

Hi list,

I'm working on an installation that makes intensive use of evt, so first
big thanks to the developpers for this incredible tool !
Still, during the development I faced a really strange issue with
ev_pro_22easy modules : it kills my framerate.

The patch uses more than 20 ev_pro_22 modules, some for movie texturing and
some for masking. The masking was directly copied from the examples, so
using ev_pro_22easy and rendering the same black texture on them. My
framerate went down to 15-20fps. As soon as I stop the "masking" gem chain,
fps reaches 26.
I finally replaced the ev_pro_22easy with ev_pro_22 for masking, and fps
then stayed at 26.

Is there any reason why ev_pro_22easy is less efficient than ev_pro_22 ?

Thanks
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