--- ray/doc/notes/ReleaseNotes	2025/03/27 01:26:55	1.479
+++ ray/doc/notes/ReleaseNotes	2025/04/27 20:20:01	1.484
@@ -2780,3 +2780,24 @@ Wrote new pvsum tool to handle cases dctimestep can't,
 spectral input pictures.  It also adds a -N option for multi-
 processing on Unix machines, which utilizes memory-mapped
 inputs for efficient i/o sharing.
+
+Made it so genBSDF can use spectral rendering for a
+more accurate photometric result.
+
+Changed default matrix representation to float rather than
+double, which uses less RAM and supports faster operations
+in general.  Build with compiler flag:
+	-DDTnativeDTrmx_native=DTdouble
+to get back higher precision representation.
+
+Taoning Wang updated genssky and gensdaymtx to provide illuminance
+calibration and accept EPW files directly as input.
+
+Added -e expr and -f file.cal options to all rendering tools, not
+just rcontrib/rxcontrib.  Feature request from Peter A-B.
+
+Fixed slight bias in indirect calculation caused by ambient
+collision detection, pointed out by Jon Sargent.  New code
+keeps track of rejected samples and sells them back to
+later calls to get something closer to a true Poisson
+sampling method.