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scuy

polar projection rendering remap to sphere bug

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1 st step ,

render geometry with polar projection.

6.thumb.JPG.27da8776c63b22fc7ca48475e349fb56.JPG

 

 

2 step , map to 1st step texture to sphere.

7.thumb.JPG.4631c0c0d799ef19e7d6801c74c0ba26.JPG

then ,near  y axis texture is broken .

 

4.thumb.JPG.0149cc40b56dee032a9263439c067b93.JPG

 

 

If i changed sphere resolution to higher  , still bad result.

Dose anyone know solution ??

or this detail is limit of Houdini algorithm (projection and mapping ) ???

I've attached test fip file. Thank you.

 

5.thumb.JPG.45a4490e79eec8d95738a63d2b3109a7.JPG

 

 

 

1_tes.hiplc

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uv is a vertex attribute so yeah - the geometry resolution has an impact. Press space+5 in the viewport to switch to uv view - your coords are outside the 0-1 range which might cause issues when baking. I suspect thats the issue as with larger faces the jaggedness of the boundary is more pronounced.

Edited by nuki

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thinking about it again, switching to a 'polygon mesh' sphere should fix the seam. maybe also drop down a uvlayout sop to fit the uvs 0-1. cant test baking as i dont have redshift unfortunately.

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Dear nuki

 

Thank you advice.

You are right , uv is over 0-1.

1.thumb.JPG.fa88f33e7364d40f2a572c93b00ea9e7.JPG

 

 

so , fixed ad type : polygonmesh , and adjust uv 0-1 , it went well.

Thank you good solution!!

 

2.thumb.JPG.0f8ed4acd38ca0b7bd2add4c97ca7487.JPG

 

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