Hi Denis,

The shape color is not enough to know about its transparency, because it could have a texture with partially transparent elements. Despite that, there's another kind of transparency, fully opaque or fully transparent, which doesn't require special rendering. That other kind of transparency is supported by the multi-pass lighting models.

Greetings

Ronie Salgado

2013/12/24 Denis Kudriashov <dionisiydk@gmail.com>

Hi

2013/12/24 Alexandre Bergel <alexandre.bergel@me.com>

el1 := (R3CubeShape new color: (Color purple alpha: 0.2)) element.
el2 := (R3CubeShape new color: (Color purple alpha: 0.2)) element.

el1 makeTranslucent.

Can it be automatic? Element has color which know about its transparency