Shader

Shaders are small programs that determine how an object is displayed, based on textures and render parameters. You cannot define new ones, but you can select from several existing ones.

To do this, select the mesh. You can select any shader in the list. Not all shaders are available for all objects.

If a shader uses textures that a mesh does not currently have, default textures are used. You can keep them or replace them with your own. If a shader does not all textures, the surplus ones are kept but not used.

The same applies for render parameters.