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My engine has support for orthogonal projections and they provide convincing results as well. Now I think I get it, there is no distortion: I am just biased by binocular vision.
Hello, thank you for the recap and for telling me the trick about closing one eye, I am new to this kind of thing. I eventually decided my implementation was ok, I reached this conclusion some days ago after comparing the image I posted with analogous perspectives rendered by professional software. I decided that if a professional rendering engine can accept these slight distortions, so can I.
@pmw1234 Thank you for the suggestion, I am giving it a shot. I just checked the presence of the vanishing point of my lines and there is exactly one so the distortion is really due to the FOV.
I have updated the JF algorithm, employing integer math when accessing the center of a given texel with no improvement. I also observed the problem occurs only when at least one of the dimensions of the atlas exceeds 1100 pixels. Under that threshold the SDF is perfect.
