Fluid/Smoke modifier has an "Apply" button, which is misleading/dangerous (only meaningful for mesh-baked liquid domains) #72916
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Reference: blender/blender#72916
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Blender Version
5c66739b78
(mantaflow)Short description of the error
All objects involved in a fluid (gas or liquid) simulation, including domains, effectors, etc, have a modifier in the modifier stack.
However, in all cases except one, the "Apply" button in this modifier is (as far as I can tell) just a synonym for "remove the modifier and the physics settings (destructively!)". It only actually "applies" something when we're dealing with mesh-baked liquid domains.
Such "Apply" button may be misleading and dangerous if a user were to, for instance, try to "freeze" a frame of a smoke simulation, which will just result in them losing all cache.
Added subscriber: @NicolaSap
Added subscriber: @Jeroen-Bakker
This is a limitation of the current modifier stack.
The mesh of a fluid simulation can be applied. Smoke is a fluid simulation, but without a mesh. There is a global flag to check if the
apply
button should be drawn or not. Removing this would also remove it from a fluid simulation where it has functionality.Changed status from 'Needs Triage' to: 'Confirmed'