Precalculate the distance at which lights will fade to zero brightness.
For lights with inverse falloff, use the gate value to determine the
cut-off distance. Use this value to cull samples and avoid the ray
tracing overhead.
Hopefully not too controversially, I am going to default this to "on" with
a gate value of 0.001. Unless you have > 1000 lights contributing
fractional light values across your map, this is not going to make any
visible difference.
Signed-off-by: Kevin Shanahan <kmshanah@disenchant.net>
We were calculating these values for every light and for every surface,
which seems a little excessive... Also made the variable names a bit more
sensible - we had stored a direction vector, not the actual mangle values.
Signed-off-by: Kevin Shanahan <kmshanah@disenchant.net>
Check whether any of the entities have colored fields set and if so,
enable colored light output. Can still be overridden from the command line
if needed.
Signed-off-by: Kevin Shanahan <kmshanah@disenchant.net>
Kevin Shanahan
Tyrann