Blend Shapes

This page goes into how to apply Blend shapes to your VRM as well as editing the Material Values...

Blend Shapes allow you to set up changes to meshes for applications to use when using lipsync with key vowel sounds such as A, E, I, O, and U or displaying emotion such as blinking, joy, anger, sorrow, and fun as well.

You can utilise either blend shapes to morph vertices from one state to another, as well changing material values such as scale or move material UVs.

It is also possible to blend or snap to the states, depending on the style of character you are making.

Standard Blend Shapes

The standard VRM Blend shapes include the following :

Neutral

A - ah

I - ee

U - oo

E - eh

O - oh

Blink

Angry

Sorrow

Look Up

Look Down

Look Left

Look Right

Blink L

Blink R

Create the Blend Shapes

Create any Blend Shapes using the Shape Keys category in the Data Properties panel. Make sure the asset you would like to add Blend Shapes to is selected.

Use the '+' to add a Basis Blend Shape, this is the default shape to base all other Blend Shapes from.
Use the '+' to add a second Blend Shape, double click on the 'Key 1' name to rename it to your target shape name.
Make sure the new Blend Shape is selected, then go into Edit mode on the asset.
Make the required changes to the mesh.
Exit Edit mode when done, use the 'Value' slider under the Blend Shape to see the results of your Blend Shape.
Continue adding new blend shapes until you have all the required shapes.

Adding Blend Shapes to the VRM

Open the VRM Blend Shape Proxy section the VRM for Blender tool.
Select the Blend Shape you would like to create such as 'A'.
Select if you would like the Blend Shape to snap, rather than transition, with the 'Is Binary' option.

Adding a Blend Shape

To add a Blend Shape, click on the '+' under the 'Binds' category,
Select the target object including the Blend Shapes under the binds section
- Use the Picker tool to select in the editor, or select the category to select the object by name.
Select the Shape Key that you would like to add to the Blend Shape.
- It is possible to add more than one Shape Key to the Blend Shape, such as combining multiple Shape Keys together from a FACS pose system.
- The Shape Key option will not appear if the model has no shape keys to select.

Adding A Material Value

A Material Value allows you to scale or position the UVs numerically, making the 'Is Binary' option is recommended.

Select the '+' under the Material Values section.
Add the Material you would like to apply the values to.
- Note that the values to the material will apply to all assets with it.
Select which property you would like to apply the values to such as :
- Color
- MainTex
- MetallicGlossMap
- BumpMap
- ParallaxMap
- OcclusionMap
- Emission
Add the number of values you would like to change depending on the type of material you applied.
- Color
  - Value 0 = Opacity [?]
- MainTex
  - Value 0 = Scale X
  - Value 1 = Scale Y
  - Value 2 = Offset X
  - Value 3 = Offset Y

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Create the Blend Shapes

Create any Blend Shapes using the Shape Keys category in the Data Properties panel. Make sure the asset you would like to add Blend Shapes to is selected.

Use the '+' to add a Basis Blend Shape, this is the default shape to base all other Blend Shapes from.

Use the '+' to add a second Blend Shape, double click on the 'Key 1' name to rename it to your target shape name.

Make sure the new Blend Shape is selected, then go into Edit mode on the asset.

Make the required changes to the mesh.

Exit Edit mode when done, use the 'Value' slider under the Blend Shape to see the results of your Blend Shape.

Continue adding new blend shapes until you have all the required shapes.

Adding Blend Shapes to the VRM

Open the VRM Blend Shape Proxy section the VRM for Blender tool.

Select the Blend Shape you would like to create such as 'A'.

Select if you would like the Blend Shape to snap, rather than transition, with the 'Is Binary' option.

Adding a Blend Shape

To add a Blend Shape, click on the '+' under the 'Binds' category,

Select the target object including the Blend Shapes under the binds section

Use the Picker tool to select in the editor, or select the category to select the object by name.

Select the Shape Key that you would like to add to the Blend Shape.

It is possible to add more than one Shape Key to the Blend Shape, such as combining multiple Shape Keys together from a FACS pose system.
The Shape Key option will not appear if the model has no shape keys to select.

Adding A Material Value

A Material Value allows you to scale or position the UVs numerically, making the 'Is Binary' option is recommended.

Select the '+' under the Material Values section.

Add the Material you would like to apply the values to.

Note that the values to the material will apply to all assets with it.

Select which property you would like to apply the values to such as :

Color
MainTex
MetallicGlossMap
BumpMap
ParallaxMap
OcclusionMap
Emission

Add the number of values you would like to change depending on the type of material you applied.

Color
- Value 0 = Opacity [?]
MainTex
- Value 0 = Scale X
- Value 1 = Scale Y
- Value 2 = Offset X
- Value 3 = Offset Y