Unreal Engine 5 Tangent Space and Triangulation Problem

nattemre · 11:43AM

My problem is that I've asked questions about triangulation and game modeling on the forum before and learned a lot, but I've actually encountered an error I can't solve. I've configured my model's UV, Normal, and topology correctly. But I'm experiencing stretching in my models. I'm investigating the cause and how to resolve it. I'd be very grateful if you could explain this technical issue to me, my friends.

Image: https://us.v-cdn.net/5021068/uploads/editor/vq/wmls1pjkxvge.png

Image: https://us.v-cdn.net/5021068/uploads/editor/cb/jiedo65g9y50.png

Image: https://us.v-cdn.net/5021068/uploads/editor/pj/xu3b4mvrku50.png

poopipe · 12:12PM

Triangulate the mesh before export. This is a Uv Interpolation artefact - most likely cause by the invisible edge flipping

nattemre · 2:56PM

poopipe said:

Triangulate the mesh before export. This is a Uv Interpolation artefact - most likely cause by the invisible edge flipping

Thank you for answer my friend but i don't know edge flipping. What is the edge flipping ?

ZacD · 3:42PM

There's 2 ways to split a quad into a triangle. If 2 programs triangulate the mesh differently it can cause issues, particularly with normal maps. It's expected to triangulate meshes after UVing and before baking and exporting.

Unreal Engine 5 Tangent Space and Triangulation Problem

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