Hello,

Take a look at the help patch about "gemwin" object and especially about
"buffering". Sending the message "buffer 1" to [gemwin] and a bang to
[gemhead] to render a chain might interest you.
An other approach is to use 2 [gemframebuffer]s to create feedback.
++

Jack



Le 20/10/2018 à 02:33, ray Y a écrit :
> Hello all:
> Does anybody know if there is a method in gems to render things without
> erasing the previous frame?
>
> for example lets say i want to have rectangles draw in gemwin, each
> render erases the previous draw,
>
> how can i keep each instance on screen? i'm trying to make kind of like
> a feedback effect!
>
> thanks
> r.y
>
>
>
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