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dpoon
12-25-2003, 07:02 PM
Hi all,

Not sure if this is OT, but here goes anyway. I am using spherical texture mapping to texture a sphere. Does anyone know of a way to get rid of all the distortion at the poles?

Regards,
David Poon.

jwatte
12-26-2003, 10:08 AM
Nope. It's built-in. I'd suggest using NORMAL_MAP or REFLECTION_MAP instead (the two forms of cube mapping)

maximian
12-26-2003, 10:44 AM
Google for polar corrected photoshop plugin. You can apply this plugin on your texture map, and then use spherical mapping or normal mapping. It worked fantastic for me.

maximian
12-26-2003, 10:47 AM
The author of the plugin is Richard Rosenman

dpoon
12-26-2003, 06:03 PM
maximian: Thanks for the plugin link.

jwatte: I'm already using cubic environment mapping for the reflections on the sphere. I'm using the texture as a decal for the sphere, and I'm modulating it with the reflections - all done using shaders. Everything looks sweet...except for those distortions at the poles http://www.opengl.org/discussion_boards/ubb/mad.gif