Texture seams, cracks, and overlapping UVs can show up differently depending on which tool you import your Meshy model into. This guide walks through common symptoms and how to troubleshoot them across Blender, Unity, and Unreal.
Common Symptoms
Visible seams or dark lines across the surface
Cracks or gaps appearing at mesh edges after import
Textures appearing stretched, doubled, or missing entirely
Overlapping UVs
Overlapping UVs happen when two or more parts of the mesh share the same texture space, causing textures to blend incorrectly. This is more likely on complex geometry and can often be reduced by simplifying the mesh or re-baking textures.
GLB vs FBX
GLB and FBX handle materials differently. If you're seeing texture issues in one format but not the other, try exporting in the alternate format to see if the issue persists.
Checking PBR Maps
Confirm that base color, normal, roughness, and metallic maps are all present and correctly linked to the model's material. A missing map is a common cause of flat or incorrect-looking surfaces.
Tool-Specific Notes
Blender: Check the Shader Editor to confirm texture nodes are connected correctly.
Unity: All-white models usually indicate a missing or unassigned material—see the related article below.
Unreal: Texture cracks after import are often related to import settings—see the related article below.
When to Retexture
If seams or cracks persist across multiple export formats and tools, the issue is likely with the original texture generation rather than the import. In that case, regenerating the texture is usually faster than manual fixes.
Support Data to Collect
If you need to reach out to support, include the model ID, export format used, the target tool and version, and a screenshot of the issue.
FAQ
1. Why do I see seams only in one engine but not another?
Different engines handle UV wrapping and material import differently, so a seam that isn't visible in one tool can appear in another.
2. Should I fix UVs manually or regenerate the texture?
For small overlaps, manual fixes in a 3D tool are often faster. For widespread issues, regenerating the texture is usually more efficient.
3. What information should I include when contacting support?
Include the model ID, export format, target tool and version, and a screenshot of the issue.
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