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alpha + volume rendering [message #32388]

Fri, 04 October 2002 08:59

Sebastian Loebbert
Messages: 12
Registered: September 2002

Junior Member

Hi all,

is there a way to get the alpha value of the pixel created by volume
rendering?

Suppose I have a quite transparent volume in my scene and render it, then
the alpha values of the resulting pixels should not be opaque but
partially transparent. But if I try to get the image using window->read(),
I get a 3-component rgb image.

Does anybody have an idea how I could get the alpha values for the pixels?
This information must be available during rendering, so why isn't it
handed over to the rendering window?

Best regards,

Sebastian

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