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# 1. applying dithering to the samplers since using a low sampling rate of the occlusion will cause artifacts. In your case, this could solve the edge bleeding issue.


How can dithering solve the edge bleeding issue? Maybe I don't understand, but I don't think it solves the edge bleeding issues. I think you could solve the edge bleeding issues with a smart blur. Don't blur the pixel if the depth delta with neighbours is too big.

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# 3. create two passes.
3.1 pass one ; rendering the scene normally.
3.2 pass two ; full screen quad pass to compute the ambient occlusion at each pixel and use it to modify the already computed lighting from pass one.



That's not really a trick is it? It's the whole idea of the algorithm sumarized.


I think you won't get very good results with this technique, ello (I would be happy if you proved me wrong!). I think you'll get better results when you use the technique shown in the article frazzle posted. You have to actually unproject some points (with the depth and view vector) to check for occlusion.