Dynamic tessellated snow material

Frenetic_Pony · July 12, 2014, 7:27pm

Lordink;73179:

Thank you. I was thinking about that - even with the coolest implementation, when the particles invoke the blueprint event while hitting the snowy surface (as we have that per-particle collision now, we could use it), and that increases the amount of snow on that exact point of the surface. is really crazy and complex to implement, but would provide some cool features - e.g. if you put something like a box on the ground, the snowfall will not affect the ground below the box. Or, all the structures with roofs will automatically have their interiors without the snow - only the roofs will be covered by it.

But without that craziness I might play in my free time in the cascade and do something like a snowfall weather effect with dynamic parameters. is far from the game project I work on, but it might turn out to be useful for some ppl.

Stay tuned for some simple snow blueprint tutorials, guys. Tessellation tutorial is bigger, so I will be making it later month.

Very “cool” all around (Ok I’ll stop :eek:) But the clever trick for getting snow/rain materials not to fall through roofs is a top down shadow map, with dynamic stuff culled out so you don’t really have to update it. Apply material to non shadowed areas and there we are, collision. Besides, and correct me if I’m wrong, the particle collision, or rather the cheap particle collision, is screenspace only yes?

anonymous_user_0df12f74 · July 12, 2014, 7:36pm

Awesome stuff! would be a really neat way to do dynamic weather! Thanks for the tutorial, I also like your “Tron Glow Tutorial”.

anonymous_user_4b05f148 · November 5, 2014, 12:07am

is it possible to just add a mask where the snow shows up and add the tessellation there?

devgee83 · November 5, 2014, 5:37pm

Hello all I’m having a where the object is breaking apart when tessellating how do I fix ?

Jollyghost · June 27, 2015, 2:44pm

You know where you selected the flat tessellation in the material details panel. Just under that there is a “Crack Free Displacement” check that and it should be fixed. it fixed the for me.

Anonymous_a35fc3f95926e103e7b9edc1e591c3fe · November 28, 2015, 6:13am

thanks a lot:)

jacksparow · March 20, 2016, 8:35am

Can you explain why you use the VertexColor node? I just can’t understand .The documents say “The VertexColor expression is the access point for the material to the outputs of color modules affecting sprite particles emitters.” But where is the particles emitters?

Lordink · March 20, 2016, 9:20am

Sadly I don’t have the material any more, and the only thing I remember about vert color is that it works as some kind of a trick. I looked it up in one of the Epic’s materials, I believe. I suggest you test it with different nodes, maybe it’s actually just me being lazy with the code

jacksparow · March 21, 2016, 7:45am

Thank you for your answer，but the Tessellation is so bad.I don’t know how to describe it.why did happen?

Jbonnett · September 21, 2016, 9:07am

Is anyone else having a problem where the edges are not tapered? Here’s what I get:

Also is there a way to influence the snow, so I can add a wind direction?

Many thanks in advance.