How to make backface invisible in cycles?

thomes · January 30, 2024, 10:45am

hi,
how to make backfaces invisible for the red object in cycles?

big thanks for help!
thomes

backface.blend (1.7 MB)

Andreal · January 30, 2024, 1:41pm

What I am doing here I’m using information from mesh to use backface to mix color and transparency.

Roger1 · January 30, 2024, 1:44pm

this might help… this guide shows how to hide surface

thomes · January 30, 2024, 1:48pm

dont want to hide surface…i want to see it where the normal looks in the camera direction , and i want to have it transparent when i look to the backside of the surface.

so the yellow i want transparent

is that not possible with standard material settings possibilities?

Roger1 · January 30, 2024, 2:08pm

does your object has single face for inside and outside?

thomes · January 30, 2024, 2:10pm

i have a blend file attached…single face,yes. normal goes to the inside

Roger1 · January 30, 2024, 2:20pm

Backface culling in Cycles Render (youtube.com)

thomes · January 30, 2024, 2:38pm

thanks, thats the shader Andreal Andrzej showed in Post #2