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Sword7

OpenGL Quadcube spherical mapping

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Folks,

 

I am getting fimilar with my OpenGL programming since last Spring and successfully wrote a program to display planet Earth by using ECP spherical mapping (slices and rings division).  Only problem is too tight grids near poles.

 

Now I researched about quadcube spherical programming for cubmap images through Internet.  I found some pages but it do not have sample code about that quadecube grids. Without sample code, I did still not know how to implement code to display quadcube sphere through simple vertexes, indices, and texcoords for glDrawElements function call.

 

Does anyone have any sample/example codes for quadcube sphere mapping for cubemaps?

 

Thanks!

 

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