its a projection screen model with straight black lines in header and footer.
but in rendering , footer and header lines broke like this:
how can I solve this problem?
You’ve got antialiasing turned off or non-existent in a location that you need it…
make sure your camera is perfectly perpendicular to your scene
no antialiasing is turned on.
yes I`m sure. but I dont know why these lines broke?!
I’m sure you think so… but that picture shows otherwise.
that`s right . thank you so much…