Backface culling on ClutterText

[Elias Bakken <elias iagent no>]

Hello list, I've made an interface with something of a cube that spins around as an alternative to tabs, but I'm having some difficulty with the backface culling on the text. It ends up shining through. Is there a way to enable backface culling for ClutterText, or is there a better way to either hide one "side/tab" including any children? The idea is to have complex content on each of the sides, even specially implemented actors using Cairo and Cogl (with inverted faces having backface culling) as well..

An alternative is to show the content just as the side gets revealed, but seems like a lot of hassle. 

Please see this video for en explanation of the problem.

https://www.youtube.com/watch?v=_kzzUCg1kU8