Reactions User Guide



Download Windows Installer
Installation Instructions

System Requirements

  • Windows 8.1 or later
  • GPU simulation requires an Nvidia GPU with CUDA CC 3.5 or later (see
  • (optional) Cinema 4D R20 or later
  • (optional) Redshift v3.0.53 or newer.


  • [C4D] Added support for R26.
  • [C4D] Added Preferences/Reactions page.
  • [C4D] Mapped disabled-state to Attribute Manager UI elements.
  • [C4D] Don't create TFD Legacy Render Bridge by default. Added menu item instead.
  • [C4D] Fixed: particle instancer did not create empty cache correctly.
  • [C4D] Fixed issue with Undo Bridging.
  • [C4D] Fixed crash caused by conflict with Redshift.
  • [Preferences] Added 'Viewport Render on GPU' option for when using CPU compute.
  • [Rake] Ported all remaining CUDA code to Rake.
  • [Rake] Support template aliases.
  • [Rake] Support constant if-expressions.
  • [SDK] Added standalone ApiExample.
  • [SDK] Added VolumeGridI::sample.
  • [SDK] Fixed issue during initialization when used in standalone mode (e.g. 3rd party render job).
  • [Templates] Added Clean Flames template.
  • [UI] Fixed: Save File dialogs did not append file extension by default.
  • [Undo] Parameter changes did not force graph update in some cases.
  • [UserGuide] Added Volume Material page.
  • [Viewport] Fixed broken viewport render on some systems.
  • [Volume] Added Loop Animation in Volume Grid/Loop.
  • [Volume] Several small performance improvements.
  • [Volume] Completed CPU compute support for all simulation nodes.
  • [VolumeMaterial] Added Density/Use Emission Remap option.