What would be the approach towards replicating that beautiful shimmering waves effect of grass blowing in the wind?
For example: Windy grass animated gif
With Unity’s standard billboard grass, it doesn’t seem possible. The grass just stretches and the texture doesn’t change to “flash” the grass blade’s opposite side to cause the shimmering effect we see in real life.
Is such an effect possible with billboard grass? Perhaps repeatedly passing white “shadows” across an area would trick the eye? But how to cast white shadow? The shadow would have to brighten an area, not darken it. And could this trick be done on a flat surface?
For example, a distant green hill with no grass rendered due to distance, would have white shimmering waves move across it randomly. At a distance it would look like grass blowing in the wind. Like how cartoon artists would do.
Perhaps volumetric grass is the only way? Of course that is expensive.
Sorry for the wordy question. Thank you.