We created a projection mapping with 160 pieces, each piece is a surface (size = projector size) with a mask.
Madmapper slows down the whole system extremely with such a high amount of surfaces, so we need a function to "merge" all masks down to one surface.
Our try to solve the performance problem was to take an output screenshot of the projector and cut out the surfaces with photoshop. Afterwards we used this PNG as output mask in the projector settings.
This mask does not fit perfectly. We need an option to scale and move the mask in the output.