TextMeshPro - Underlay Effect with Negative Outline Width

TextMeshPro (TMP) is the text rendering system for Unity.

To use TMP with an underlay effect:

1. Select the text object
2. In the TextMeshProUGUI component, set the Outline Width to a negative value to create an underlay effect.

• Negative values create an underlay (inner outline)
• Positive values create an outline (outer outline)

Example settings:

• Outline Width: -1
• Outline Color: Black

This creates a black underlay behind the text.