For the image (bitmap) below,
if I do:
Create a spite with the image in unreal engine.
Create a opacity mask on the spite.
Use this image, choose a specific color, such as blue, make its corresponding region the only opacity region on the mask.
My question is about the implementation of part 2 and part 3 in Unreal engine, they are quite confusing.
If anyone know how to implement it in unity, it would also be helpful.
Thanks a lot.