Set minimum cosine to 0.02 to avoid blowing-up values near grazing
Minor changes should not affect results
Added grazing angle extrapolation to BSDF interpolation
Changed to optimized transport matrix computation
Removed accidentally inserted DEBUG define
Fixed potential bug due with closely-spaced incident angles
Disabled DEBUG statements in BSDF programs and added progress bars
Added neighborhood difference to distance metric for better lobe shaping
Removed unused crad field from grid array
Switched to calling Acos() wherever appropriate
Eliminated redundant code added in last change to bsdfmesh.c
Added tracking of BSDF sample name
Major overhaul/redesign of radial basis function derivation
Fixed overflow and tweaked culling operations
Added -l option to limit maximum number of RBF lobes for interpolation
Added minimum BSDF to output where we have no data.
Isotropic BRDF interpolation seems to work now
Added GRIDRES to saved BSDF representation
First semi-working version
Hopeful bug fix in BSDF interpolation code
Bug fixes and minor improvements
Broke pabopto2xml into pabopto2bsdf and bsdf2ttree
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