FLIP Fluids Development Update 2024 – V2 Insights & New Features in V1
👋 Welcome everyone!
This year’s FLIP Fluids Development Update 2024 comes with a whole new look — and a Tutorial
🌐 For the first time, the entire video takes place inside a 3D environment, created using our new Compositing Tools. We’re switching perspectives, using green screen footage, and exploring new workflows — all inside Blender. 📽️ The video also includes a full instructional segment that shows exactly how this 3D scene was built, using our latest compositing features. ⏱️ It’s longer than usual and was released a bit later than expected — mainly because we were deeply focused on developing these new tools and features. We think it was worth the wait.
🔍 What’s inside? We’ll walk you through the key highlights of our development work in 2024:
🌊 A deep dive into the progress of FLIP Fluids Version 2
🗝️ Keynotes – thoughts, insights, and direction
🧩 Introduction of the new UID Attribute — a powerful new system in our simulation pipeline
🧪 Hands-on instruction of the brand new Compositing Tools, including how to use them in your own Blender projects
🙏 Special thanks to the amazing Blender Team and the entire Blender Community — your support makes projects like this possible. If you’d like to contribute to the future of Blender, please consider joining the Blender Development Fund. 💙
Full Release Notes for v1.8.3: version 1.8.3 (Mar 23 2025)
Bug Fix: Fixed issue where keyframed Simulation Playback > Override Frame value may not update during render, resulting in a static animation.
FLIP Fluids 1.8.3 includes a compositing tools feature set, bug fixes, stability improvements, and official compatibility support for Blender 4.4. Compatibility Notes:
FLIP Fluids 1.8.3 is officially supported in Blender 3.6 to Blender 4.4. Blender 4.5: At this moment there are no known compatibility issues specific to Blender 4.5 Alpha, but this could change as Blender 4.5 develops. (Blender 4.5 Support).
Added: A Compositing Tools feature set to the FLIP Fluids sidebar. Documentation and video productions for this large feature set are in progress (Documentation).
Added: A UID attribute to the fluid particles to generate a unique ID values to select and track individual particles (Documentation).
Added: Whitewater and Fluid Particle geometry node modifiers will now contain a Particle Scale Random value to control the random scaling of particles. This change will take effect on newly created Blend files.
Added: Fluid Surface, Whitewater, and Fluid Particle geometry node modifiers will now contain a set of parameters to control fading for usage in compositing tools. This change will take effect on newly created Blend files.
Added: Dual function for the FLIP Fluids Sidebar > Add Fluid/Inflow operators to quickly add sized Fluid or Inflow objects. If the domain is selected, these operators will add a Fluid or Inflow object sized to the domain width and scaled 25% of the domain height.
Added: Options to select which sides of the fluid surface to remove when using the Domain > Surface > Remove Mesh Near Boundary feature.
Added: A Multi-Instance rendering mode when launching a command line animation render. This mode allows you to set how many Blender instances are allowed to run and render separate frames simultaneously.
Change: All features that were hidden under the Enable Developer Tools option are now enabled by default and this option has been renamed to Enable Extra Features.
The original purpose of this option was to disable features that could trigger a Blender render instability bug related to attributes and geometry nodes. Now that attributes and geometry nodes have become more deeply integrated into the addon, this option can no longer avoid these issues and has become irrelevant. In later development, this option will be removed entirely.
Reminder: It is always recommended to render from the command line for complete render stability. Related topic: Why render from the command line?.
Change: Command line operators have been largely rewritten and reorganized to accommodate new features and to improve macOS/Linux support (Documentation).
Bug Fix: Fixed ‘Python: RuntimeError: could not create instance of FLIP_FLUID_OPERATORS_OT_bake_fluid_simulation…‘ operator errors in Blender 4.4+.
Bug Fix: Fixed ‘TypeError: Cannot assign a ‘int’ value to the existing ‘Input_2_use_attribute’ Boolean IDProperty‘ error when using ‘FLIP Fluids Sidebar > Initialize Motion Blur’ operator in Blender 4.4+.
Bug Fix: Fixed memory out of bounds bug that could result in memory corruption and random crashes during simulation baking.
Bug Fix: Fixed keymap errors which could be displayed during Blender shutdown.
Bug Fix: Fixed ‘Preferences not found‘ warnings during Blender shutdown that could be displayed when running command line operators.
Bug Fix: Fixed syntax error when installing as a legacy addon in Blender 4.2+. Note: It is strongly recommended to install the addon as an extension, which is the default behavior.
Bug Fix: Fixed issue where fluid surface object could disappear when opening the Blend file in an installation of Blender with an earlier FLIP Fluids 1.7.5 or less installed.
Bug Fix: Fixed issue where the Auto-load Baked Frames feature would not factor in the playback offset when loading newly baked frames.
Development 2024
FLIP Fluids Development Update 2024 – V2 Insights & New Features in V1
👋 Welcome everyone!
This year’s FLIP Fluids Development Update 2024 comes with a whole new look — and a Tutorial
🌐 For the first time, the entire video takes place inside a 3D environment, created using our new Compositing Tools. We’re switching perspectives, using green screen footage, and exploring new workflows — all inside Blender.
📽️ The video also includes a full instructional segment that shows exactly how this 3D scene was built, using our latest compositing features.
⏱️ It’s longer than usual and was released a bit later than expected — mainly because we were deeply focused on developing these new tools and features. We think it was worth the wait.
🔍 What’s inside?
We’ll walk you through the key highlights of our development work in 2024:
🙏 Special thanks to the amazing Blender Team and the entire Blender Community — your support makes projects like this possible. If you’d like to contribute to the future of Blender, please consider joining the Blender Development Fund. 💙
Links:
-> Simulation Nodes Example Files:
https://flipfluids.com/Development_2024/simnodes_particles_curves_blend_example_rev0.zip
-> Compositing Example Files:
https://flipfluids.com/Development_2024/FF_Compositing.zip
-> Blender Simulations Nodes Manual:
Simulation Nodes – Blender 4.4 Manual
-> Full Release Notes v1.8.3:
Release Notes
Full Release Notes for v1.8.3:
version 1.8.3 (Mar 23 2025)
Bug Fix: Fixed issue where keyframed Simulation Playback > Override Frame value may not update during render, resulting in a static animation.
FLIP Fluids 1.8.3 includes a compositing tools feature set, bug fixes, stability improvements, and official compatibility support for Blender 4.4.
Compatibility Notes:
FLIP Fluids 1.8.3 is officially supported in Blender 3.6 to Blender 4.4.
Blender 4.5: At this moment there are no known compatibility issues specific to Blender 4.5 Alpha, but this could change as Blender 4.5 develops. (Blender 4.5 Support).
Added: A Compositing Tools feature set to the FLIP Fluids sidebar. Documentation and video productions for this large feature set are in progress (Documentation).
Added: A UID attribute to the fluid particles to generate a unique ID values to select and track individual particles (Documentation).
Added: Whitewater and Fluid Particle geometry node modifiers will now contain a Particle Scale Random value to control the random scaling of particles. This change will take effect on newly created Blend files.
Added: Fluid Surface, Whitewater, and Fluid Particle geometry node modifiers will now contain a set of parameters to control fading for usage in compositing tools. This change will take effect on newly created Blend files.
Added: Dual function for the FLIP Fluids Sidebar > Add Fluid/Inflow operators to quickly add sized Fluid or Inflow objects. If the domain is selected, these operators will add a Fluid or Inflow object sized to the domain width and scaled 25% of the domain height.
Added: Options to select which sides of the fluid surface to remove when using the Domain > Surface > Remove Mesh Near Boundary feature.
Added: A Multi-Instance rendering mode when launching a command line animation render. This mode allows you to set how many Blender instances are allowed to run and render separate frames simultaneously.
Change: All features that were hidden under the Enable Developer Tools option are now enabled by default and this option has been renamed to Enable Extra Features.
The original purpose of this option was to disable features that could trigger a Blender render instability bug related to attributes and geometry nodes. Now that attributes and geometry nodes have become more deeply integrated into the addon, this option can no longer avoid these issues and has become irrelevant. In later development, this option will be removed entirely.
Reminder: It is always recommended to render from the command line for complete render stability. Related topic: Why render from the command line?.
Change: Command line operators have been largely rewritten and reorganized to accommodate new features and to improve macOS/Linux support (Documentation).
Bug Fix: Fixed ‘Python: RuntimeError: could not create instance of FLIP_FLUID_OPERATORS_OT_bake_fluid_simulation…‘ operator errors in Blender 4.4+.
Bug Fix: Fixed ‘TypeError: Cannot assign a ‘int’ value to the existing ‘Input_2_use_attribute’ Boolean IDProperty‘ error when using ‘FLIP Fluids Sidebar > Initialize Motion Blur’ operator in Blender 4.4+.
Bug Fix: Fixed memory out of bounds bug that could result in memory corruption and random crashes during simulation baking.
Bug Fix: Fixed keymap errors which could be displayed during Blender shutdown.
Bug Fix: Fixed ‘Preferences not found‘ warnings during Blender shutdown that could be displayed when running command line operators.
Bug Fix: Fixed syntax error when installing as a legacy addon in Blender 4.2+. Note: It is strongly recommended to install the addon as an extension, which is the default behavior.
Bug Fix: Fixed issue where fluid surface object could disappear when opening the Blend file in an installation of Blender with an earlier FLIP Fluids 1.7.5 or less installed.
Bug Fix: Fixed issue where the Auto-load Baked Frames feature would not factor in the playback offset when loading newly baked frames.