Z-Fighting anyone?

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Z-Fighting anyone?

Post  jj on Wed Nov 19, 2008 10:39 pm

Hi,

I am having an issue where my solid cylinder object appears to be "see-through". There's little specs of inside material showing, when it should be a solid cylinder "shell".

From what I can tell this issue is called z-fighting, and happens in OpenGL.

Has anyone experienced this when rendering sio2 objects? Are there any solutions?

Thanks in advance

jj

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Re: Z-Fighting anyone?

Post  sio2interactive on Thu Nov 20, 2008 1:59 am

Code:


         // Enable polygon offset to avoid zfighting
         glEnable( GL_POLYGON_OFFSET_FILL );

         // If you are using the simulator theses values
         // will do.
         glPolygonOffset( -2.0f, 2.0f );
                  
         // Setup the polygon offset, on the device polygon
         // offset require extreme value in order to work
         // correctly. Try setting the optimal combination
         // proper to your application. The following value
         // will work but are not optimized...
         //glPolygonOffset( -10.0f, -10.0f );
...
...

         // Disable polygon offset
         glDisable( GL_POLYGON_OFFSET_FILL );

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Re: Z-Fighting anyone?

Post  meteors on Thu Nov 20, 2008 7:01 am

You should also check that your model's normals are correct.


Best,
-j
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Re: Z-Fighting anyone?

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