Game Development Reference
our layer using one of the modes in the Operator drop down. For
example, when I increase the Red Value property to 100, and take
the Operator to Add it adds red color using an Add blend mode,
producing a brighter result (Fig. 5.12).
If we keep the Red Value the same, but change the operator to
Subtract, we get a completely different result. The result is cyan,
because the Red Value now specifi es how much red to subtract
from the fi nal result (Fig. 5.13).
Figure 5.12 The result of
increasing the Red Value with the
Figure 5.13 The result of