keywords: Substance Painter, Fill by polygon, Fill by UV.

How to select and fill by UV or selected triangles

Substance Painter: selecting UV Islands using the Polygon Fill Tool

1, Add fill layer.

2, Customize your fill color or material.

3, Righ click add black mask.

Make sure the black mask was checked:
Then model will display wireframe:

4, Swith to Polygon Fill mode:

Select fill mode: Triangle Fill

Since the asset for testing has only triangles, no polygon, so Polygon Fill is the same as Triangle Fill.

Fill mode: Mesh Fill

Fill mode: UV Chunk Fill

5, If want to change wireframe visulization, tweak it in Display Settings:

6, Switch to Paint mode once polygon fill finished.

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