| 1222 |  | Fixed bug in glarendx for dgr calculation with sources behind view. | 
| 1223 |  |  | 
| 1224 |  | Added -p option to histo to print percentages/percentiles r.t. counts. | 
| 1225 | + |  | 
| 1226 | + | Added a source occluder cache to accelerate shadow testing.  This | 
| 1227 | + | can save up to 50% of the calculation time in scenes with many | 
| 1228 | + | light sources, especially ones containing large occluders.  This | 
| 1229 | + | optimization may be tuned or switched off with the -DSHADCACHE=N | 
| 1230 | + | compile switch, where N is the resolution of the shadow cache, or | 
| 1231 | + | 0 to disable it.  Since this is purely a time vs. memory trade-off, | 
| 1232 | + | I decided not to make it a new command-line option.  (We already | 
| 1233 | + | have plenty.) |