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Chapter 9. Texture Painting > Bump and Specularity Maps

Bump and Specularity Maps

We can give the textures even more life by adding effects that will work on top of the base textures. Effects such as specularity and bump maps are included in most of today’s games to add the appearance of shiny and rough surfaces.


Note

Of course, you will need to check whether the game engine can handle specularity and bump maps. Secondly, you must verify that you have the texture space available for these effects. Each added effect will add another version of the texture page to the overall texture page count.


Bump maps are used to give objects the illusion of having even more detail. The bump map uses a grayscale height map that works with the surface normals of the model. This map tells us which areas on the texture need to be bumpy, and the normals tell the map what direction to work in. This technique does not add any geometry to the model, and the silhouette stays the same.


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