On 28/08/2010 8:31 PM, clipka wrote:
> The root cause is a combination of
>
> (1) a problem with either the sor or lathe object, returning "undefined"
> as the surface normal at a certain point (which leads to "undefined"
> values in subsequent computations of a refracted ray), and
>

If you remove either the SOR or the lath or the skysphere the scene 
renders OK.

> (2) a lack of defensive programming in the image handling code (which
> "converts" the undefined values into an

Actually looking at both the SOR and the lathe in OpenGL (Bishop3D) 
shows an ugly turn at the base. I will remodel them even if it leaves 
gaps between the glass and the liquid.

Thanks Christoph.
-- 

Best Regards,
	Stephen

Post a reply to this message