I have an old renderer from years ago written with OpenGL immediate mode. I've decided to learn Vulkan and I'm converting my old project as a way to learn the new concepts.
One of the things my old renderer did is display a 'glow' around a star that planets and other objects could pass through (see screenshot). This was done by using a greyscale texture and using some additive blending with colours - it created a nice effect.
I'm wondering if there's a modern/better looking technique that I can investigate to make this look even better 10 years on. It feels like something an 'ambient spherical volume light' around the sun could achieve, with the volume filled with fog?
I'm not sure if the approach I wrote makes any sense, just looking for ideas!