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3d texture lookup interpolation options

Subject: 3d texture lookup interpolation options
From: Mark <email@hidden>
Date: Mon, 22 Oct 2007 12:17:44 +0200
Delivered-to: email@hidden
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Hi all, if I get it right, OpenGL gives two options for interpolation of 3d textures, nearest neighbor or trilinear.

I would like to test other interpolation options, for this, for a given coordinate XYZ, I need not the interpolated value of XYZ but instead the values of all (or some) grid points surrounding coordinate XYZ.

Does somebody have a smart idea how to do that?

Cheers
Mark
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