How to display a image texture only on the outside of a object (cylinder)? I am currently trying to texture a soda cup, but have some issues with the UV mapping I think, because the alpha image that I add on the cup is also visible on the inside of the cylinder. What I want is that it is only visible on the outside of the object. I modelled the cup only with a cylinder object.
Material details
I've added the texture using nodes and a RGBMixer to get the transparent image. As you can see, the image is also visible inside the cup.
I tried searching for it on the internet, but didn't find anything related. Hope some can help me out!
If the object has different surfaces for the inside and outside of the cup, just assign a white material to the inside.
If there is no thickness and you are seeing the backface of the object on the inside use the Geometry &gt; Backfacing information to control the mix between two different shaders.

Read more about the Geometry node here:
https://docs.blender.org/manual/en/latest/render/shader_nodes/input/geometry.html?highlight=backfacing
how to use a texture on each side of the same face
If you are using a solidify modifier read this answer:
Add different textures to front and back of plane with solidify?