Question by Loius · Jul 17, 2013 at 07:22 PM · shader artifacts image-effects ssao

SSAO: How do I get rid of these artifacts?

Here we have several floating islands with trees on them at about 40 units from the camera:

alt text

We're using the Pro-only SSAO camera effect which looks great on nearby geometry, but not out there.

There are two problems I see:

The dark patches are probably "correct" in that the geometry suggests ssao should darken that area, but I want them gone or at least very very shrunk. What can I do to get rid of them?

The lines around the islands, I have no explanation for. Has anyone experienced anything like that? Any ideas on how to clear those out?

I'm not any good at shaders; if the fix is to fix the shader could you point me towards a decent shader tutorial as well? I have terrible skill at finding any usable shader tutorials.

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Benproductions1 · Jul 18, 2013 at 02:34 AM 1

There is nothing what with what is getting rendered. This is the effect you get with SSAO, there is no "fix". It's one of it's downsides.

If you really want a better effect, either lightmap the AO, render it into textures or make a shader that uses a different method for AO (HBAO or HDAO)

look at: http://ga$$anonymous$$g.stackexchange.com/questions/95161/ssao-vs-hbao-vs-hdao-whats-the-real-difference

Hope this helps,
Benproductions1