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what are these black artifacts?


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Posted

post-49-0-08388800-1324002316_thumb.jpg

 

please take look at these artifacts, This only appears in this tree model, and, if I disable hdr, then there will be no artifacts.

 

Why?

Posted

This artefacts are nan or inf floating point values in the screen buffers. The main cause of this artefacts is extreme directions in the normalmap. Try to reduce the strength of normalmap textures.

  • 3 weeks later...
Posted

We have eliminated these. I think the fix was to make sure the spec map was not colour, (or it may have been to make sure the alpha has no spec map).

  • 2 weeks later...
Posted

problem still exists even when I didn't use any normalmap and/or specular map.

 

And strange things, these black artifacts disappear when camera move close enough, when camera are far from these trees, the black artifacts appears.

 

So I don't think it's the problem of normalmap or specularmap.

  • 4 weeks later...
Posted (edited)

Could you please send us the tree mesh together with all textures? (As well as the rendering API and your video card.)

Edited by manguste
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