This is yet another screen-space ambient occlusion shader.
Original technique is HERE by Arkano22.
I tuned it up a bit adding my circular texture sampling and pattern sample filtering.
Right now it is the best depth-only based SSAO I have come across. It is mostly artifact-free and quite fast. It is made on a slow Mobility Radeon GPU so it should run fine on any decent computer. But anyway it would be nice if you guys could take a look at it and test it. Here is the 2D Filter : http://dl.dropbox.com/u/11542084/ssao_nohalo_1.0
http://dl.dropbox.com/u/11542084/ssao_nohalo_1.2 (last one)
http://dl.dropbox.com/u/11542084/SSAO_2.6.blend (1st version)
http://dl.dropbox.com/u/11542084/SSAO_spiral_mist_2.6.blend (current one)
an animated gif:
You may use it anyway you like.