Hello guys and gals,

I was playing around with a simple scene for a Holiday card, and have two
problems. This years' focus was on trying glasses and contents as
believable as possible.

The scene is a PNG background image of some fireworks, and two glasses in
the front. The PNG is defined with an ambient light of 1, there is no
other light source in the scene.

Strangely, the image of the PNG coming through the glass seems to be
amplifying: Without the glasses, the image shows fine, through the
glass, the image saturates completely!

And the second problem is an artifact appearing in the middle line (row)
of pixels. This artifact seems to depend on the size of the image. In the
image I uploaded, it's not very visible (right side of each glass). In a
1200x900 version, it runs over the entire width (I'll render another one
of these later).

The output images are:

http://jcoppens.com/misc/with_glasses.png
http://jcoppens.com/misc/no_glasses.png

I'm running POV-ray 3.7beta34, on Linux.

John

PS: I still have to set ambient of the liquid to 0...

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