Image Texture is fine in Render View but renders distorted After modelling a character I've unwrapped the model with Smart UV Unwrap and then painted up an image texture. Everything is fine in Rendered View both in Evee and in Cycles but the texture renders crooked as though the unwrap is messed up.
I tried loading an older save with the finished model and unwrapping and painting it again with the same end result - the image texture renders crooked and parts of the mesh even loose the Shade Smooth look (see the right wing of the owl).
What am I missing? Have I messed up while modelling?
It definitely looks like z-fighting. Likely caused by a copy of the object on top of the one you want to render. You cannot have two surfaces that overlap and use the exact same point in space, the 3D engine will not know how to render that and display one surface or the other randomly.
Check if you don't have a copy of the object. Delete it or disable it for render.
See:
Avoid rendering hidden objects (blender 2.8)
If the mesh is duplicated as part of the same object, then enter edit mode and do Mesh &gt; merge by distance to get rid of duplicated vertices