Flowmaps for skies in Paragon Art Map. Any ideas how to replicate this?

Development Rendering
1

You can see that in the Paragon art map (not used in game) that they have moving skies. It looks like it is a skydome texture driven by a flowmap, instead of scrolling textures. I have been wanting to make a material that uses the Naughty dog method of skies that they described at GDC, but I have been unsuccessful in achieving the same timing of flow then LERP. Does anyone have any suggestions?

You can see the sky in the background below.
https://youtu.be/N4mkgbwLg7U

2

You talking about sky clouds in Fornite, right? It looks very pretty, and it definitely use some flow or distortion.
But its material looks complex. I think there is no good advise how to do that. Only with many experiments and adjustments.

3

I would love more info on this as well. I’m stuck on how to generate the maps I need based on the direction vectors dot product against the binormal. How can I preform this math and get the texture I need? Is this something houdini could do? I think this is the video the op and I are referencing https://youtu.be/o66p1QDH7aI?t=20m24s

4

for me it looks a little bit redundant.
you can get good results with simple panners and few layers of clouds, and it will be simpler shader and texture setup.

5

I find panning cloud textures can be quite obvious and repetitive sometimes. Painting flowmaps is quite simple, are you wondering about the material implementation?

6

I found a really old blog with this material setup, and its pretty close to doing the right thing(Converging on and from a vanishing point). The sides are moving faster than the top area of the dome which should be opposite and there’s a pretty nasty contracting pole at the top though. I’m more wondering how to bake the math in the above video into a flow texture or figure out the issues with the current shader to get rid of the pole and get the top area moving faster than the sides

Edit: Looks like the pole is there to stay, but I’d still really like to know how to get the sides flowing slower than the top.

7

If you watch the video that Jaston3d linked, they mention the “sky sphincter” problem and that there isn’t really a direct way around it. You can billboard it out or make it so the player can’t look up that high.