Hey, guys, I want to be in a mobile phone game of marbles, but I do not good marble texture, like the image, who can give me some ideas…
Cubemap.
I’d be considering cheating with a two stage effect.
The first part is the swirl in the middle of the marble, this can either be done with pretty much any shader.
The second part is the glass it’s held in and here I’d cheat- it would be a 2d plane billboarded between the swirl and the camera, and on here I’d apply a transparent map of a glass sphere rendered in my 3d app of choice, it’s high-quality glass with ultra-realistic (…if static) reflections and very little overhead.
This can be quite a good way of doing things. Hustle Kings used a more complicated shader, but similarly no source geometry.