--- ray/doc/notes/ReleaseNotes	2021/02/19 22:05:46	1.387
+++ ray/doc/notes/ReleaseNotes	2021/04/07 21:13:52	1.391
@@ -2423,3 +2423,14 @@ Removed upper limit on number of modifiers in rcontrib
 
 Put cap on maximum ambient gradient to avoid over-extrapolation of
 poorly computed irradiance cache values.
+
+Added robjutil +T option to triangulate all faces in .OBJ description.
+
+Altered BSDF library to have both front and back diffuse transmittance
+values, which can be different.  This was necessary to avoid issues
+caused by measurement and modeling discrepancies.
+
+Added pabopto2bsdf -g option to cull near-grazing scattering to avoid
+issues with noise and negative values.
+
+Increased default dynamic range from 32 to 100 in pcond and normtiff.