Generating Normal maps in GIMP

We will now learn to quickly convert Albedo maps into Normal maps in GIMP. This will allow us to turn any image texture into a Normal map in a few clicks.

In the following steps, we will export a texture as a Normal map:

1. Open the Albedo map in GIMP.

Figure 5.39 – Opening an Albedo map in GIMP

2. Open the Filters menu from the top of the window, find the Generic section, and click on Normal Map.

Figure 5.40 – Applying a Normal Map filter

GIMP will instantly turn the image into a Normal map and offer some tools to adjust the image, as shown in Figure 5.41. You can tweak the settings, but applying the default settings usually works well.

3. Click the OK button.

Figure 5.41 – Confirming the conversion

4. Once again, export the image, and name the file Normal_Map.png.

Figure 5.42 –...