
230 Game Development and Simulation with Unreal Technology
Group: Provides a way to org a n ize parameter names into groups, or cat-
egories, within a Material Inst ance Constant. All parameters
within a material that have the same Group property name will be
listed underneath that cate gory in the instance.
Default Value: Specifies the initial value that the parameter ta kes on.
Vector Parameter: This parameter expression is equivalent to a Constant4Ve ctor
expression in that it stores four values (RGBA) and returns these values. However,
like all other parameters in Unreal Engine, it can be referenced and its values
changed in an instance of the material ...