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Bug: preview wrong for masked multi-laser output

Posted: Fri Oct 31, 2025 3:51 pm
by mw/mf0
hi

i noticed this bug in both the Madmapper v5.7.x as well as in the v6 beta, screenshot attached.
setup is multiple outputs (lasers) and each has a mask applied (safety zones..). there is one laser material running, it renders 5 vertical lines, in a large quad covering all outputs. the masking should cut off the lines at the bottom, however it is shown correctly only on one of the outputs, the one edited last (on the left). the other outputs seem to not have a mask/safety zone applied! luckily this is a bug only in preview, not in the real output.
and even more limited: it is a bug only in the simple preview (let's call it "graphical preview"), not in the "laser beam preview"!

m

Re: Bug: preview wrong for masked multi-laser output

Posted: Fri Oct 31, 2025 3:54 pm
by mw/mf0
this bug is reproducable by the way.

i had another bug, only in the v6 beta, which seems related. however i cannot reproduce it anymore.
screenshot attached. the graphical preview only shown for the right output, not for the left one. (In the thumbnail of the laser material you can see how it should look like.)
laser beam preview is correct again!

Re: Bug: preview wrong for masked multi-laser output

Posted: Fri Oct 31, 2025 7:58 pm
by mad-matt
Indeed when a laser surface covers multiple laser outputs, the preview is not correct. Best is to create a quad for each laser output, and for each quad select the correct portion in the output visual. That's the correct workflow. But anyway, we will fix the preview issue when a single laser quad covers multiple outputs.
Thanks for reporting!