Game Development Reference
In-Depth Information
Figure 7.11
Blurring new layer.
Why?
By making the next level up blurred a bit more, we are creating a stepped
increase in the new height being created. Each successive layer copy will
be blurred a bit more, thus increasing the height and spreading the up
ramp out a bit.
Step 13:
Repeat the process of duplicating the level and then running a
Gaussian Blur, but this time with a radius of 4.
Step 14:
Repeat the duplication and Gaussian blur process five
more times, each time increasing the radius of the blur by 2
(
Figure 7.12
).
Figure 7.12
Multiple layers of
increasingly blurred normal maps.
Why?
Take a look at
Figure 7.13
, which shows the initial output by NormalMapFilter
and compares it to the result of the multiple overlayed layers. Notice how
much more information is there, and how much richer the normal map
actually is.
