Changes of rigid body related settings during simulation will break the simulation (worked in 2.78c) #52374
Labels
No Label
Interest
Alembic
Interest
Animation & Rigging
Interest
Asset Browser
Interest
Asset Browser Project Overview
Interest
Audio
Interest
Automated Testing
Interest
Blender Asset Bundle
Interest
BlendFile
Interest
Collada
Interest
Compatibility
Interest
Compositing
Interest
Core
Interest
Cycles
Interest
Dependency Graph
Interest
Development Management
Interest
EEVEE
Interest
EEVEE & Viewport
Interest
Freestyle
Interest
Geometry Nodes
Interest
Grease Pencil
Interest
ID Management
Interest
Images & Movies
Interest
Import Export
Interest
Line Art
Interest
Masking
Interest
Metal
Interest
Modeling
Interest
Modifiers
Interest
Motion Tracking
Interest
Nodes & Physics
Interest
OpenGL
Interest
Overlay
Interest
Overrides
Interest
Performance
Interest
Physics
Interest
Pipeline, Assets & IO
Interest
Platforms, Builds & Tests
Interest
Python API
Interest
Render & Cycles
Interest
Render Pipeline
Interest
Sculpt, Paint & Texture
Interest
Text Editor
Interest
Translations
Interest
Triaging
Interest
Undo
Interest
USD
Interest
User Interface
Interest
UV Editing
Interest
VFX & Video
Interest
Video Sequencer
Interest
Virtual Reality
Interest
Vulkan
Interest
Wayland
Interest
Workbench
Interest: X11
Legacy
Blender 2.8 Project
Legacy
Milestone 1: Basic, Local Asset Browser
Legacy
OpenGL Error
Meta
Good First Issue
Meta
Papercut
Meta
Retrospective
Meta
Security
Module
Animation & Rigging
Module
Core
Module
Development Management
Module
EEVEE & Viewport
Module
Grease Pencil
Module
Modeling
Module
Nodes & Physics
Module
Pipeline, Assets & IO
Module
Platforms, Builds & Tests
Module
Python API
Module
Render & Cycles
Module
Sculpt, Paint & Texture
Module
Triaging
Module
User Interface
Module
VFX & Video
Platform
FreeBSD
Platform
Linux
Platform
macOS
Platform
Windows
Priority
High
Priority
Low
Priority
Normal
Priority
Unbreak Now!
Status
Archived
Status
Confirmed
Status
Duplicate
Status
Needs Info from Developers
Status
Needs Information from User
Status
Needs Triage
Status
Resolved
Type
Bug
Type
Design
Type
Known Issue
Type
Patch
Type
Report
Type
To Do
No Milestone
No project
No Assignees
6 Participants
Notifications
Due Date
No due date set.
Dependencies
No dependencies set.
Reference: blender/blender#52374
Loading…
Reference in New Issue
No description provided.
Delete Branch "%!s(<nil>)"
Deleting a branch is permanent. Although the deleted branch may continue to exist for a short time before it actually gets removed, it CANNOT be undone in most cases. Continue?
System Information
Win7 x64
Blender Version
Broken: 2.79 RC (Master since between April and Juli)
Worked: 2.78c
Short description of error
Rigid body physics doesn't allow changes of related settings during simulation anymore. Either on mesh objects itself or on constraint objects a change immediately invalidates the simulation point cache and everything is lost.
Changing settings of physics during simulation is a crucial part for VFX work. This has been possible since Bullet is accessible from viewport, it was fully supported by Blender and Bullet in all past Blender releases. Also this breaks some Bullet related add-ons like the Bullet Constraints Builder on a fundamental level.
Exact steps for others to reproduce the error
Expected behavior: Cube continues to drop without noticeable influence
Current behavior: Cube suddenly jumps out of frame, orange cache indicator in timeline disappears
rb-cube.blend
Changed status to: 'Open'
Added subscriber: @KaiKostack-3
#52216 was marked as duplicate of this issue
#52457 was marked as duplicate of this issue
Added subscribers: @LucaRood-3, @Sergey
Another physics issue for @LucaRood-3!
Added subscribers: @MichaelDanielson, @brecht, @mont29
Added subscribers: @akej74, @SteffenD
Added subscriber: @jta
Ummmm, ya, this is a bad thing....
Hey @LucaRood-3, if there is no further fix to be expected, can you revert the changes leading to this serious issue now for the release please?
Commits:
9cd6b03187
3edc8c1f9b
b87d10d4fe
This issue was referenced by
4ad5df8858
Added subscriber: @sreich
Can someone test this patch to make sure it fixes this and #50230 before I commit?
Also found another bug unrelated to this which was introduced after 2.78 and is in the RC (baking is broken).
Will look into it later today.
The issue seems to be solved by this patch. Thanks for taking care of it.
Changed status from 'Open' to: 'Resolved'