I want to make an object to appear semi transparent when it is behind walls so that the camera would still be able to render it but in less solid form. Does this have to do with shaders or raycast? I not sure on the right keyword to search for the problem or even where to start. Hopefully someone could point me to the right direction.
Thank you.
Shaders. Basically, you need to render the object with two shaders: the normal material and one with an inverted Z test (as well as whatever glowing rim lit transparent whatever effect). Keywords:
ztest greater shader
Try to make something with the Strumpy Shader Editor, or modify an existing shader source. This is a good simple intro to Shaders. You’ll find they’re quite fun.