Joshua Autumn writes:
In this tutorial, you'll learn how to create glowing surface cracks in Blender, using the diffuse color texture map. This is great for creating sci-fi scenes, lava cracks in the rocks, etc.
In the first part, we'll be going over how to create the displacement and the glows coming from within the cracks and crevasses of the texture. In the second part, we'll be going over an optional step, creating the different color pattern for the glow.