Hi , I would like to know that the uper res workflow in SOP Flip , Do i need to blend the result of high and low res simulation? and how to do that?

Or I just only need the high res result?

it depends on what you are upressing
if you are upressing the whole sim, then you only need high res result
if you are upressing only a section you may want to combine it with low res everywhere outside of that section and blend them together
here Igor describes one of the ways to blend them https://www.youtube.com/watch?v=merqe0uYrKM [www.youtube.com]

Igor discusses merging 2 sections of almost very flat areas, what about turbulent oceans and running rivers? I am struggling in both.

tamte
here Igor describes one of the ways to blend them https://www.youtube.com/watch?v=merqe0uYrKM [www.youtube.com]

Igor goes into quite a bit of detail, but doesn't quite touch exactly on what's going on inside his blending vops.

Would love to know specific settings (or any other method available) if anyone has tried this approach before?

GlennimusPrime

tamte
here Igor describes one of the ways to blend them https://www.youtube.com/watch?v=merqe0uYrKM [www.youtube.com]

Igor goes into quite a bit of detail, but doesn't quite touch exactly on what's going on inside his blending vops.

Would love to know specific settings (or any other method available) if anyone has tried this approach before?

I agree, and He didn`t make available to download the hip.

Pavini

GlennimusPrime

tamte
here Igor describes one of the ways to blend them https://www.youtube.com/watch?v=merqe0uYrKM [www.youtube.com]

Igor goes into quite a bit of detail, but doesn't quite touch exactly on what's going on inside his blending vops.

Would love to know specific settings (or any other method available) if anyone has tried this approach before?

I agree, and He didn`t make available to download the hip.

In houdini 20 you have node call flip volume combine, that do same thing that i did in my presentation in h19.5
its also better then what i had because you can use it for wwater sim blend also

Hey I was wondering how did you guys blend the particles, I was able to handle the volumes thanks to your insights, but the particles when merged together have an obvious border, I tried creating a surface on the border and snapping all the points that when outside of the volumes, also remove the pscale for good measure, but there still a faint border left on my sim.

1st image is the surfacing result.
2nd is the snapping surface I made using the low res sim.
3rd is the mask I usde to blend it in and out of snapped.

ok so what I did is I convert the low and the high res particles to sdf using the particlefluid sop( just output sdf instead of polygons), then used the flipvolumecombine, is this how I should've done it?, so the particles can be discarded or maybe used for whitewater sourcing?, flipvolumecombine did a stellar job in blending the surface fields.