======  The light map ======

The //light map// is just that - it is a map of the light intensity on the surface of the heightfield. It is used when generating the [[l3dt:reference:maps:tx|texture map]].

===== Example map =====

{{ l3dt:reference:maps:lm.jpg }}

The sunlight used in this map was yellow-white, but it can be any RGB colour you like. Note that the [[l3dt:algorithms:lm#light_absorption_by_water|water absorption]] option has been used here, thus the seafloor is very dark, and shallows are green-blue.

===== Further reading =====

  * User-guide topics:
    * [[l3dt:userguide:ops:lm|Generating the light map]].
  * Algorithm information
    * [[l3dt:algorithms:lm|Light-mapping algorithms]].