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Comparing ray/doc/notes/ReleaseNotes (file contents):
Revision 1.480 by greg, Wed Apr 2 00:55:27 2025 UTC vs.
Revision 1.481 by greg, Fri Apr 4 18:06:48 2025 UTC

# Line 2783 | Line 2783 | inputs for efficient i/o sharing.
2783  
2784   Made it so genBSDF can use spectral rendering for a
2785   more accurate photometric result.
2786 +
2787 + Changed default matrix representation to float rather than
2788 + double, which uses less RAM and supports faster operations
2789 + in general.  Build with compiler flag:
2790 +        -DDTnativeDTrmx_native=DTdouble
2791 + to get back higher precision representation.

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