Emission and bloom
Briefly

With local illumination, lighting of a surface is evaluated in isolation from other surfaces, and any light sources must be defined as simple combinations of shader uniforms and textures...
Bloom is an imaging artifact present in physical cameras, in which fringes surround the brightest areas of the image, contributing to the illusion of an extremely bright light overwhelming the camera or eye...
Read at Don McCurdy
[
]
[
|
]