In this weeks Two-Minute Tuesday tutorial, we take a look at how to bake emissive textures, meshes/models as a light source. With the help of Unreal Engine 4's GPU and CPU Lightmass, any emissive texture, or material, can be used to emit light. Baking a mesh light is a simple process that only involves 1-2 settings.
Keep in mind this only works for baking lights, and will not work dynamically with raytraced lighting / shadows.