Filter using 2 input images (Flash). How to implement?

Hi. I know how to implement filters that process single image as it was described in Pixel Benders Developer's Guide, but how can I apply filter using 2 input images one of which is computed? I wrote a filter that coppies alpha channel of one picture and applies it to another, but flash implementation is quite a puzzle for me... Any help appreciated

In our tutorial from last year's MAX, I showed how to use a two-input pixel bender kernel as a blend filter for two images on the stage. that is posted here:http://blogs.adobe.com/kevin.goldsmith/2008/12/materials_from_1.html
In one of my recent blog postings, I showed how to use a ShaderJob with multiple inputs. I was doing it for audio processing, but it works almost identically for images: http://blogs.adobe.com/kevin.goldsmith/2009/08/pixel_bender_au.html
Hopefully one of these should help, but if you have specific questions, don't hesitate to ask...

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Filter using 2 input images (Flash). How to implement?

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