Game Development Reference
In-Depth Information
Figure 7.24
Settings for lightmapping.
Why?
The default settings for lightmapping are generally reasonable for a first
pass. For interior scenes, these settings will frequently result in some
splotchy sections on the walls that will result in some adjustments of
some of these specifics. However, for exterior scenes, and for first passes,
the default settings are alright. If using Unity Pro, the settings that are
changed here (Bounce Boost and Bounce Intensity Settings) are needed
because of the huge overhang the scene has. “Bounce” in both of these
cases refers to light bouncing, and without a bit of help, the light from the
overhead Sun won't get back to the dark corners of the map.
Tips and Tricks
If you have Unity Pro, you also have access to the Global Illumination
settings. For this scene, turn down the Intensity of the Sun to 0.4, then
in the Lightmapping window, change the Sky Light Intensity to 0.5 and
press bake. The results are more refined.
Step 8:
Press the Bake button and go for a coffee/beer/soda/bathroom
break. It's likely to take a while. The progress bar is shown in the lower
right corner. The results are shown in
Figure 7.25
.
Figure 7.25
Results of single light
baking with Bounces, Bounce Boost,
and Bounce Intensity set at 2.
