I’ve recently been looking at games made by Homemade_Meal, and I’ve been baffled about how they create bright surfaces on curved faces in their renowned game TUNNELER:
Looks like I figured it out, and it does involve a Decal.
I totally forgot that a Decal can project itself onto a complex mesh. However, I NEVER knew that if you go beyond the 255, 255, 255 color threshold in the Decal, it will start producing an emission/glow effect.
I used this knowledge to create some curved signs, and they don’t look bad at all.
Image below is a test chamber sign from Portal 2.
If you apply some other overlays such as a vignette or grain, it will look much better.