Isometric Tilemap Characters Z-Fighting Causing Flickering

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I have an isometric tilemap with many characters walking around on the map. The characters are constrained to integer positions, so I often end up with z-fighting (fast flickering) when two characters are at the same position.

This would normally be fixed by assigning the characters each a different order within the layer, but that is not possible because I think they must remain at the same order within layer as the tilemap walls. Otherwise, they will not be able to walk behind the walls. Giving each character a slightly different z-value does not appear to work.

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Answer by mbchapman · Dec 06, 2021 at 02:38 AM

I have solved this problem by setting a small bias towards the z-value for the Transparency Sort Axis, then I assigned a unique z-value to the position of each character.

This ensures that the z-values of the characters are taken into account when sorting them. I had to use a fairly small z-value for the Transparency Sort Axis.

A value of (0, 1, 0.1) is working well.

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Isometric Tilemap Characters Z-Fighting Causing Flickering

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