Brush Tool

Brush tool (B hotkey) is used for painting arbitrary shapes on a texture.

All available settings are described in the Texture Editor article. However, there is a specific Draw Blend Mode parameter that sets a blending mode for the brush:

• Alpha Blend — override the existing color with the current color.

• Add — add the current color to the existing color value. This mode can be useful when painting a height map.

  Alpha Blend Mode	Add Mode

• Minimum — override the existing color with the current color only if it has a lower value.

• Maximum — override the existing color with the current color only if it has a higher value. This mode can be used, for example, when you need to increase low values in a height map by no more than a certain value.

  Minimum Mode	Maximum Mode