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Comparing ray/src/common/bsdf.h (file contents):
Revision 2.25 by schorsch, Fri Jan 5 20:15:50 2018 UTC vs.
Revision 2.27 by greg, Thu May 14 19:20:13 2020 UTC

# Line 84 | Line 84 | extern const SDCDst    SDemptyCD;      /* empty distribution *
84   typedef struct SDComp_s SDComponent;
85  
86   /* Methods needed to handle BSDF components (nothing is optional) */
87 – #ifdef __cplusplus
88 – /* in C++, the const puts the type into the local anonymous namespace,
89 –   making it a private (and different) type for each file using this header.
90 – */
87   typedef struct {
92 – #else
93 – typedef const struct {
94 – #endif
88                                          /* return non-diffuse BSDF */
89          int             (*getBSDFs)(float coef[SDmaxCh], const FVECT outVec,
90                                      const FVECT inVec, SDComponent *sdc);
# Line 111 | Line 104 | typedef const struct {
104   /* Structure to hold a spectral BSDF component (typedef SDComponent above) */
105   struct SDComp_s {
106          C_COLOR         cspec[SDmaxCh]; /* component spectral bases */
107 <        SDFunc          *func;          /* methods for this component */
107 >        const SDFunc    *func;          /* methods for this component */
108          void            *dist;          /* loaded distribution data */
109          SDCDst          *cdList;        /* cumulative distribution cache */
110   };
# Line 152 | Line 145 | extern struct SDCache_s {
145   #define SDretainAll     2               /* also keep cumulative cache data */
146  
147   extern int              SDretainSet;    /* =SDretainNone by default */
148 + extern unsigned long    SDmaxCache;     /* =0 (unlimited) by default */
149  
150   /*****************************************************************
151   * The following routines are less commonly used by applications.

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