![\"Sad](\"http:\/\/www.spellcasterstudios.com\/wp-content\/uploads\/2015\/01\/wlEmoticon-sadsmile.png\")
<\/p>\nSo today I started implementing SSAO, and it was demoralizing\u2026 <\/p>\n
I was looking into my old SSAO shaders, and I decided to implement the simple version before moving towards more complex versions, and I hit the first hurdle\u2026<\/p>\n
When I started work on my deferred renderer (which was going to be used by the SSAO stuff), I had to compute the world position of the pixel of the rendered image, based only on the depth at that point. But at the time, I wasn\u2019t getting the math right, and since I had a self-imposed deadline, I cheated and stored the world position into one my render targets, to be changed at a later time\u2026 Well, that later time never came, which means that the reconstruction of the position was never done\u2026 Since I don\u2019t want to make the same mistake again, I started working on that for this shader\u2026 and again, I couldn\u2019t get the math right!<\/p>\n
After a long time looking at the math and the parameters, etc, I finally found out what the problem was\u2026 I was computing the position correctly, yes, but relative to the camera<\/u>, not the actual world position. So, basically I was interpreting the data wrong\u2026<\/p>\n
After this revelation, I could change the shader to display normals if the distance in X is lower than 10, and the depth if it\u2019s higher:<\/p>\n
![\"screen389\"](\"http:\/\/www.spellcasterstudios.com\/wp-content\/uploads\/2015\/01\/screen389.jpg\" "\\"screen389\\"")
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