Unpredicted image distortion and Pixel Bender support

Question

Hi!
I'm running my very simple Pixel Bender filter that replaces colors around the image (inverts pixels). Running on various graphic cards I got sometimes unpredictable results (FP10, Flash), when running this filter on a big number of images (image sizes are 1000x200 pixels).
Images got distorted - the example is included.
I can't find the exact case when it happens, but I think it may somehow connected with GPU drivers. Sometimes I got a correct image, and sometimes not on the same graphic card.
Is there a way to force a filter to use CPU instead of GPU? And is there a function in Flex to detect if the Pixel Bender is supported on a current graphic card and turn it off?

Answer 1

Sorry, I was a bit wrong describing what's happening. I'm running an AIR application (on Windows).
I'm running a filter on BitmapData with applyFilter (checking if it is not null, before the run). The image size is about 1000x200 or 2000x200. There are about 300 images which are processed in a loop. Here's a piece of my code:
                var invertColorShader:Shader = new Shader(new InvertColorKernel() );
                var invertColorFilter:ShaderFilter = new ShaderFilter( invertColorShader );
                var point: Point = new Point(0,0);
                for (var i:Number=0;i<_imagesArrayCollection.source.length;i++)
                        bitmapData = (_imagesArrayCollection.source[i].imageBitmap as Bitmap).bitmapData;
                        if (bitmapData != null && bitmapData.width>0)
                            bitmapData.applyFilter(bitmapData, rect, point, invertColorFilter);
Some times people running my application experience the unpredicted images distortions I have shown above. The configurations range from desktop computers to notebooks , and the above behaviour is random, still cannot find the exact case.
Is there a way in AIR to find if Pixel Bender uses GPU or CPU and force it to switch?