Hair Model ​

Model Specifications： ​

• A single hair component supports a maximum of three material spheres.
• Hair materials have a gradient function, and creating UVs in the correct manner can yield more desirable results.
• Hair models and hair accessory models should be distinguished by different material IDs for differentiation.
• Materials do not support double-sided display. If a double-sided display effect is needed, it must be achieved by duplicating the model.

Recommended Polygon Count: ​

• The recommended polygon count includes both the hair model and hair accessory model parts. Exceeding the polygon count limit will prevent the model from being uploaded.

Model Tips： ​

• After completing the model, be sure to check that the vertex color Alpha is pure white, otherwise it may cause the outline to display incorrectly in the game.

• Properly setting up the smoothing groups can enhance the model's aesthetic appeal and make the lighting effects more natural.

UV Specifications: ​

• Split UVs based on material properties and gradient color functionality. Different materials have slightly different UV requirements:

  • Basic hair materials work best for anime-style hairstyles (block modeling).
  • Realistic hair materials are ideal for realistic hairstyles (plane modeling).

• Arrange UVs efficiently. By leveraging the gradient function of the material sphere, you can achieve great results without creating complex textures.

• When using gradient color functionality, ensure UVs are tiled vertically from top to bottom. For more details, refer to the Hair Material Guide.

• UV Placement Rules:

  • Both hair models and hair accessory models must have UVs placed in the 1st quadrant.
  • Hair accessory models have no special UV requirements.

Anime Hair ​

• Models are mostly created using block modeling techniques, and it is recommended to use (basic hair) materials. The model only requires one set of UVs.

Realistic Hair ​

• Models are primarily created using plane modeling techniques. It is recommended to use Realistic Hair or Realistic Translucent Hair materials. The model requires two sets of UVs.
• UV1 is used to match the Color Map, Alpha, gradient color change, and the tiling density of the strand highlights.
• UV2 is used to match the Normal Map.

Texture Specifications ​

• Different materials require slightly different textures. Only general specifications are introduced here. For details, please refer to Hair Material

Texture Dimensions: ​

• Recommended size: 512*512
• The maximum texture size should not exceed 1024*1024

Resource Organization ​

Material Spheres: ​

• Material naming must comply with the material slot specifications, and materials need to be assigned and correctly named within DCC software such as 3Dmax and Maya.

• Incorrect naming may lead to material display errors
• For example: When a hair material is named Body, it will be automatically recognized as a nude model upon upload, and the nude model material cannot be altered.

Model Inspection: ​

• Set the units to centimeters (cm) in 3dsMax.
• Verify that the model coordinates are at the world coordinate center, with model coordinates at 0.0.0, and there should be no scaling values.

• Review the resource list for unused models, empty groups, or similar unnecessary elements, and delete them if found.
• Check for incorrect double-sided faces, broken faces, broken vertices, and polygons with five or more sides.
• Verify that the model's smoothing groups are set correctly.
• Ensure that each component has been assigned a material sphere and that the material spheres are named correctly.
• Confirm that the number of UVs is correct.

Complete： ​

• Once the model and textures are completed, you can proceed with rigging or animation production.