I’ve been playing around with mesh edit in game engine and noticed some unexpected behavior.
Polygons become invisible at specific angle (depends on how vertices been rearranged?) even though camera is looking at “top” side of polygon as shown in pictures.
On original mesh all polygons are triangles with normals pointing to z+ axis, I rearrange them into cube.
This only seem to happen then looking at the bottom of cube, not top.
Any ideas why this happens? Or how to fix it?
Note that changing vertex normals only affect shading, not which side of polygon is visible.