flaco

i would like to replace white or black by transparency ; i want to use several jit.gl.gridshape and a movie behind them ; and then, replace le white of the gridshapes by the colors of the movie.

i could use jit.alphablend but how can i use several gridshapes?

alpha

you can use as many jit.gl.gridshape objects you want.

you can also, and I guess it is the recommended way, use one jit.gl.gridshape and jit.gl.multiple

this can provide a better control & probably memory management.

https://cycling74.com/docs/max6/dynamic/c74_docs.html#jit.gl.multiple

you can use as many jit.gl.gridshape objects you want.
you can also, and I guess it is the recommended way, use one jit.gl.gridshape and jit.gl.multiple
this can provide a better control & probably memory management.

https://cycling74.com/docs/max6/dynamic/c74_docs.html#jit.gl.multiple


Okay, but how can I tell to jit.alphablend that i use several gridshapes? Can I do a kind of screenshot, for example, and connect the screenshot tp jit.alphablend?

My question can be more common. how do you apply an effect on the whole global picture? For example, a general feedback (that is a reverb).

... no idea?
My question can be more common. how do you apply an effect on the whole global picture? For example, a general feedback (that is a reverb).


may be that the solution is to use jit.gl.render but i don't really anderstant how...