Texel Density Explained: Keeping Texture Sharpness Consistent

Definition

A texel is one pixel of a texture. Texel density is how many texture pixels cover a given amount of real surface, usually measured in pixels per meter (px/m) or per centimeter. A 1024 px texture stretched over a 1 m wall has a density of 1024 px/m; stretched over a 4 m wall it is 256 px/m, so it looks four times blurrier.

Why it matters

When assets have different densities, the scene feels inconsistent: a sharp barrel next to a soft crate, a crisp face next to a blurry hand. Consistent density makes assets look like they belong together, and it makes memory use predictable.

Typical values

These depend heavily on the game, camera distance and platform, so treat them as starting points to agree on with your team:

• Mobile, third-person: roughly 128–512 px/m.
• PC / console, third-person: roughly 512–1024 px/m.
• First-person hero props or close-up detail: 1024 px/m and above.

Anything that the camera sees up close deserves more; things that are always far away deserve less.

How to set it

1. Decide the target density for the project (and for categories such as environment, props, characters).
2. Use a texel density tool: Blender add-ons, Maya's tools or 3ds Max's tools. Set it per UV island.
3. Check using a checker texture; squares should look the same size across the scene.
4. Choose the final texture resolution from the object's total UV area and the density you want.
5. Pack islands efficiently so no space is wasted (see UV mapping explained).

Exceptions that are fine

• Hidden or rarely seen parts (the underside of a vehicle) can be lower.
• Focal points, like a character's face or a weapon's emblem, can be higher.
• Stylized art with flat color can use much lower density than realistic art.

Connection to performance

Higher density means larger textures and more memory (see game asset optimization). A UV atlas shares one texture between assets, so the density you choose there decides how big the sheet has to be.