Is it possible to provide some “global” material parameter that can be changed one time and affect all materials with it on all meshes? For example, I want to make at some time moment all cars red - is it possible with setting this parameter one time, not mesh-by-mesh?
Yes, you can create a Material Parameter Collection. Here you can set a Vector parameter called “Color”. Inside your Material you then have to look for Collection Parameter. When you added that node, click on it and then select your collection and your Vector paramter called “Color”. You can change this Vector parameter from a blueprint and this will effect every material that has this Collection parameter in use.
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