normally you would use vertex colour to mask the wind movement. The trick is not to vertex paint the grass in UDK. What you do is import the grass mesh with vertex colours already applied in Max/Maya or whatever. This way every placement of the grass will have the same vertex colours on it.
Right, so I am working on this environment. And is currently in the process of making the vegetation and foliage for the scene. And I am facing two problems with the shader. This is the first time I make a material in UDK so I wouldn't be surprised if the problem is something very basic. So this is the scene: And the first…