This is my SSAO implementation by useing D3DX9 API. I had tried some other solutions, and this is the best SSAO algorithm that I can found to gives good result.
If you have a better solution, please let me know, thant you!
the follow picture show the steps of my implementation:
my demo screenshot:
1) use simple blur
2) use gaussian blur
the below picture is the screenshot of another SSAO solution I had tried:
you can download the sourcecode from here.
Tips :
In my demo, you can view the argb buffer when press key 'C'.