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  • Validation
    • Validation tool for Blender
    • Validation checks
      • Hierarchy/Objects
        • Check: Naming conventions
        • Check: Object mode
        • Check: Parent name
        • Check: Object children
        • Check: Transforms
      • Mesh validations
        • Check: UV Map Name
        • Check: UV Map Range
        • Check: UV Map Count
        • Check: Mesh Triangle Count
        • Check: Vertex Colors
        • Check: Skinning
        • Check: Armature
      • Skinning validations
        • Check: Rig Count
        • Check: Bone Names
        • Check: Skin Weight Normalization
        • Check: Skin Weight Influences Count
        • Check: Skin Weight Valid Bones
      • Materials validation
        • Check: Backface Culling
        • Check: Material Nodes
        • Check: Material Base Color
        • Check: Material Specular
      • Texture map validations
        • Check: Texture Wrapping
        • Check: Texture Color Space
        • Check: Texture Node Name
        • Check: Texture Path
        • Check: Texture Format
        • Check: Texture Metalness
        • Check: Texture Albedo
        • Check: Texture Embedding
      • Animations
        • Animation
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On this page
  • Description
  • Automatic Fix
  • Normalize Weights
  • Actions: Select Vertices
  • Manual Fix
  • Tip
  • Properties
  1. Validation
  2. Validation checks
  3. Skinning validations

Check: Skin Weight Normalization

Version:

PreviousCheck: Bone NamesNextCheck: Skin Weight Influences Count

Last updated 2 years ago

Severity: Warning

Error message: Skin weights per vertex do not sum up to 1.

Description

Normalizing weights is recommended for smooth animation deformations.

The linear sum of the weights should be as close as reasonably possible to 1.0 for a given vertex.

The threshold in the is set to 2e-7 times the number of non-zero weights per vertex.

Automatic Fix

Normalize Weights

Normalizes the bone influences, i.e. for each vertex, this fix makes sure that the sum of the weights across all vertex groups is equal to 1.

Actions: Select Vertices

Select vertices with non-normalized skin weights.

Manual Fix

Re-adjust the weights.

Tip

Properties

Hosts: Blender

Types: Mesh

While In Blender, you can turn on Auto Normalize in the settings of the Draw tool under to avoid this issue while painting skin weights.

official glTF validation tool
painting weights
Options