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How can I make parts of the texture glow
I am trying to make this logo where I have used a texture and the lava cracks need to glow or emit light, which I will randomly vary later on. But can’t figure out how to do it.

link to the project file and the texture: https://drive.google.com/drive/folders/1f5fZFKePnbIfhix7x8CTgnoNmZcAKURK?usp=sharing
