Alain <aze### [at] qwertyorg> wrote:

> > Hello,
> >
> > I have a problem with transparency while rendering. To make it simple I've made
> > an example to explain it. The scene consists of 3 cubes of different size,
> > placed one in another. The problem here is that if I put all the transmit
> > parameter to 1 with a white background; we should see only a completely white
> > picture. Here it's not the case, the last cube (the smallest and the one
> > surrounded by the 2 others) appears black. I don't know if a parameter is
> > missing in my code,... Here is the code:
> >
>
> 3 nested objects means 6 surfaces to compute plus 1 for the background.
> This makes 7 points.
> max_trace_level default to 5, so you stop tracing at the 5th surface and
> return black.
> Outer box is 2 surfaces plus 1 or 3.
> Second box add 2 surfaces for a total of 5, or the default value of
> max_trace_level.
> Third box adds 2 more abd gives black.
>
> Solution:
> Set max_trace_level to a value large enough to go through all surfaces,
> in your case, that's 7 or larger.
> As you have non-zero reflection, there is no other solution.
>
>
>
> Alain

Hello!

Thanks to both of you Alain and Le Forgeron, the solution is perfect!

Good bye!

Post a reply to this message