Painted surfaces

From FreeGameDevWiki

This tutorial will manipulate an existing texture into a painted-looking one.

You will need the texture you want to have the painted-look. And a reference picture of a painted surface or similar contrasts.

The tutorial

Create an new white layer and create a slight noise using the noise filter ("Filters/Noise/HSV Noise" 0 Saturation, <20 Value)

Choose a reference picture. It doesn't need to be a painted surface, a picture with high contrast and interesting shapes will do. Copy a bit of it, make it seamless (manually or via "Filters/Map/Make Seamless").

Desaturate the reference picture ("Colors/Desaturate") and lower or increase brightness ("Colors/Brightness-Contrast"), depending on how much surface you want the paint to cover or play around with the Levels and Curves tools ("Colors/Levels" and "Colors/Curves").

Add a layer mask to the original texture and copy/paste the desaturated reference picture to the mask.