| 32 |
|
|
| 33 |
|
#define BRT2SCALE(l2) (int)(M_LN2*TM_BRTSCALE*(l2) + ((l2)>0 ? .5 : -.5)) |
| 34 |
|
|
| 35 |
< |
#define HISTEP 8 /* steps in BRTSCALE for each bin */ |
| 35 |
> |
#define HISTEP 16 /* steps in BRTSCALE for each bin */ |
| 36 |
|
|
| 37 |
|
#define MINBRT (-16*TM_BRTSCALE) /* minimum usable brightness */ |
| 38 |
|
#define MINLUM (1.125352e-7) /* tmLuminance(MINBRT) */ |
| 42 |
|
|
| 43 |
|
#define LMESLOWER (5.62e-3) /* lower mesopic limit */ |
| 44 |
|
#define LMESUPPER (5.62) /* upper mesopic limit */ |
| 45 |
– |
#if (TM_BRTSCALE==128) |
| 46 |
– |
#define BMESLOWER (-663) /* encoded LMESLOWER */ |
| 47 |
– |
#define BMESUPPER (221) /* encoded LMESUPPER */ |
| 48 |
– |
#else |
| 45 |
|
#define BMESLOWER ((int)(-5.18*TM_BRTSCALE-.5)) |
| 46 |
|
#define BMESUPPER ((int)(1.73*TM_BRTSCALE+.5)) |
| 47 |
< |
#endif |
| 47 |
> |
|
| 48 |
|
/* approximate scotopic lum. */ |
| 49 |
|
#define SCO_rf 0.062 |
| 50 |
|
#define SCO_gf 0.608 |
