• WARNING: due to significant changes in this release, presets from previous versions are not guaranteed to work

Simulation

• The simulation solver has gone through a complete overhaul, and that comes with tons of major improvements! Here's an overview of what you can expect:
  • Surface tension
  • Whitewater Node
    • Three types of whitewater particles
      • Spray, which falls down from the liquid
      • Foam, which follows the liquid surface movements
      • Bubbles, which rise to the surface of the liquid
    • Emitter: Whitewater nodes can be used to emit whitewater based on different criteria.
    • Force Nodes can be connected to apply forces only to whitewater particles
  • Whitewater View Options
    • Wave crest, this displays the wave crests of the liquid where whitewater particle will spawn if enabled
    • Trapped air, this displays the regions where air is getting trapped by the liquid whitewater particle will spawn if enabled
  • Moved from APIC to a PIC/FLIP solver
  • Volume conservation improvements[, especially when using compensation]
  • Projection improvements to create a smoother liquid surface [(specially when mesh isovalue >= 0.3)]
  • Improvements to the spatial accuracy of the emission
• Improved sticky boundary conditions with rotating geometry [(a bit. It's still not great)]
• Increased the maximum number of particles supported
• There are now four possible export options in the Particles Export node: liquid, foam, spray, and bubble
• Removed "Redistribute tight particles" from Simulation Node
• Force nodes have gone through several changes and additions, here's an overview of what you can expect:
  • Added a line force node, affecting both the simulation and whitewater
  • Added a toroidal force node, affecting both the simulation and whitewater
  • Turbulence node was reworked, params and inner workings are now similar to Embergen's noise node
  • Added noise preview to the turbulence node
  • Improved shape forces with imported meshes
  • Fixed some crashes resulting from interations between import nodes and force masks pins
• Added lifetime to particles
• Added the "target divergence" option to the projection
  • The solver will now adapt to achieve a given "quality" instead of running the same number of iterations all the time

Rendering

• Improved rasterized directional light's shadowmap range
• Added refraction for liquids and geometry when using rasterized rendering
• Added liquid transmission color when using rasterized rendering
• Pathtracing now respects inverted shapes
• Pathtraced materials now have an emissive property, so any geometry can be a light source (even the liquid)
• Pathtraced point lights can now have a radius (they become a sphere light with a nonzero radius)
• All color inputs are now gamma-correct
• Allow coloring particles by attribute

UI/UX

• Added gizmo/parameter live-recording to timeline (Shift+R)
• Added support for snapping-to-frame on the timeline
  • Enable by using the "magnet" icon at the top right of the timeline
• Made internal floating windows resizable from any corner
• Improved line rendering across the entire UI
• Improved the stats in the viewport with more relevant information
• Split and renamed Divergence Control into "Compensante compression" and "Compensate decompression"
• Added shortcut to randomize parameters (Ctrl+Alt+R)
• Added shortcut to show liquid simulation tiles (Alt+B)
• Added shortcut to show liquid simulation bounding box (B)
• Fixed long submenus sometimes not handling mouse click correctly

Bugfixes

• Fixed volumetric emitters always generating zero velocity on the interior when used with imported meshes
• Fixed volumetric emitters always resetting interior velocities
• Fixed several bugs related to performance
• Fixed issues with velocity transfer of imported meshes
• Fixed vertex winding order for alembic imports
• Fixed issues with the transfer of collider velocities to the liquid
• Fixed issues with isolated droplets being removed
• Fixed important issues with the liquid-air interface
• Fixed collisions adding energy into the system
• Fixed a bug related to velocity transfer for imported meshes
• Fixed a window maximizing bug on Linux
• Fixed an issue where 'View -> Bounds' (B) didn't do anything
• Fixed an issue where in "Whitewater - Trapped Air" or "Whitewater - Wave crests" viewing modes, the liquid would be rendered with refraction even though it inhibited the usability of these modes