3D pixel art shader.

I know this must be possible in some way using only a shader.

I want to be able to feed in a small pixel art image, possibly around 20x20, and have it appear 3D on cube.

I need it to support transparency, so just doing 6 faces isn't really going to ever make this work, but if a shader can somehow appear like the image is going all the way through the cube I'd be set.

It just needs to be like a 2 sided quad with a bottom that matched the bottom colours, a top that matches the top colours, etc.

If anyone is an expert with shaders they'll know more about this than me. For now I'm kind of stuck.

Thank you,
Mike, Crab Cyborg.

 

Sounds like you just need a cube with a texture wrapped on the faces the way you want.
Front as regular, Back as mirrored, sides as smeared edges.

 

Yep! Just use any texture, make sure the texture filtering is set to "Point" instead of Bilinear maybe (for a truly gritty pixel aesthetic), and use the Unlit / Transparent shader.

What you need of the model is really just how you would UV unwrap the object.