I've been trying to make grass appear like it's blowing in a breeze, here's a quick 24 frames.
Built-in TG grass clump; 250 blades, 1m diameter, 1m blade length.
Did a lot of tests yesterday, which are now scrapped and won't be posted, mostly involving warping. When you reach a certain point with warp the textures begin to wind into themselves and there's no continuous method to keep it moving. I gave up on that.
Instead, I'm now using a smooth fractal(@0.25m) for the displacement function of the grass clump shader and just transforming it ever upwards on the Y axis, which gives a smooth and non-repeating movement.
Displacement amplitude here is '0.1'. Maybe a bit much, it looks kind of under-watery.
I'll carry on with this and post any updates if and when, I think I can limit the amount of displacement so there's more at the tips of the grassblades and less at the base...
[attachimg=#]
Notice the static shadows. The ray tracer doesn't seem to see displacement on objects. Oh well.
*And, of course, you can't use 'Ray trace objects' to render this either.