Commit Graph

22 Commits

Author SHA1 Message Date
Bartosz Kosiorek
1e5ede1942 Physics: Increase precision of 4D vector normalization functions
More accurately normalize 4D vectors, to avoid potential
numerical stability issues in Mantaflow.

For consistency with changes from #136966.

Pull Request: https://projects.blender.org/blender/blender/pulls/137413
2025-04-30 21:01:36 +02:00
Bartosz Kosiorek
1148eb9c8b Fix #102755: Viscosity instability in Mantaflow
More accurately normalize 3D vectors, to avoid this an potential other
numerical stability issues in Mantaflow.

Pull Request: https://projects.blender.org/blender/blender/pulls/136966
2025-04-09 22:04:51 +02:00
Campbell Barton
1865de1c73 Fix #129926: Crash with Python 3.12 & Manta flow
Python 3.12 no longer supports calls to PyImport_AppendInittab
once initialized.

The call was redundant as Blender's `bpy_internal_modules` already
includes the "manta" module.

Resolve by disabling the call when Python's lifecycle isn't being
managed by manta-flow.
2024-11-28 12:04:45 +11:00
YimingWu
71e7775bcb Fix: Mantaflow: move allocation after early return
Varibale `pic` is allowcated before an early return, which could cause
a memory leak. Now fixed.

Pull Request: https://projects.blender.org/blender/blender/pulls/121104
2024-04-26 06:31:22 +02:00
Ray Molenkamp
388bbc3290 Build: library updates for Blender 3.5
This updates the libraries dependencies for VFX platform 2023, and adds various
new libraries. It also enables Python bindings and switches from static to
shared for various libraries.

The precompiled libraries for all platforms will be updated to these new
versions in the coming weeks.

New:

Fribidi 1.0.12
Harfbuzz 5.1.0
MaterialX 1.38.6 (shared lib with python bindings)
Minizipng 3.0.7
Pybind11 2.10.1
Shaderc 2022.3
Vulkan 1.2.198

Updated:

Boost 1.8.0 (shared lib)
Cython 0.29.30
Numpy 1.23.2
OpenColorIO 2.2.0 (shared lib with python bindings)
OpenImageIO 2.4.6.0 (shared lib with python bindings)
OpenSubdiv 3.5.0
OpenVDB 10.0.0 (shared lib with python bindings)
OSL 1.12.7.1 (enable nvptx backend)
TBB (shared lib)
USD 22.11 (shared lib with python bindings, enable hydra)
yaml-cpp 0.8.0

Includes contributions by Ray Molenkamp, Brecht Van Lommel, Georgiy Markelov
and Campbell Barton.

Ref T99618
2022-12-07 15:28:17 +01:00
Campbell Barton
6777c420db Mantaflow: call MANTA::terminateMantaflow on exit
terminateMantaflow was never called, this leak is more of a technicality
since it's only called on exit.

Also make Py_Initialize/Py_Finalize optional in Pd:setup/finalize
as it caused Blender to crash, finalizing Python twice.

Add a patch to extern/mantaflow to keep track of changes in Blender
from up-stream.
2022-06-29 10:11:01 +10:00
Campbell Barton
ad8add5f0c Fix T98427: Crash adding quick effects smoke from Python
Manta flow used the `__main__` namespace which it was executed in,
this caused a bug when calculating fluid from Python, which clears
it's `__main__` name-space after execution.
This caused Manta-flows name space to be cleared too.

Resolve this by creating a separate name-space for manta-flow.

Reviewed by: SonnyCampbell_Unity

Ref D15269
2022-06-24 23:28:55 +10:00
Sebastián Barschkis
3e23af4c49 Fluid: Clang-format cleanups
Just cleanup.
2021-09-06 17:30:30 +02:00
Sebastián Barschkis
a563775649 Fluid: Updated Mantaflow source files
This updates fixes the following issues (critical for 2.92):

- Issue that prevented dense 'int' grids from being exported (incorrect clip value)
- Issue with particles outside out of domain bounds (position between -1 and 0) not being deleted
2021-02-05 16:23:02 +01:00
Sebastián Barschkis
635694c0ff Fluid: Added new viscosity solver
Mainly updated the Mantaflow version. It includes the new viscosity solver plugin based on the method from 'Accurate Viscous Free Surfaces for Buckling, Coiling, and Rotating Liquids' (Batty & Bridson).

In the UI, this update adds a new 'Viscosity' section to the fluid modifier UI (liquid domains only). For now, there is a single 'strength' value to control the viscosity of liquids.
2020-12-23 15:48:38 +01:00
Sebastián Barschkis
311031ecd0 Cleanup: Use nullptr everywhere in fluid code
Switched from NULL to nullptr.
2020-11-06 12:06:05 +01:00
Sebastián Barschkis
a0ebfab4f3 Fluid: Updated Mantaflow source files
Among code cleanups, this update includes a new flood-fill helper function for levelsets.
2020-10-06 18:35:12 +02:00
Sebastián Barschkis
aa547ce88b Fluid: Update Mantaflow source files
Refactored various functions after noticing new warnings when compiling on Apple DTK devices - there should now be fewer warnings when building.
2020-07-16 16:39:49 +02:00
Sebastián Barschkis
7e0289b618 Fluid: Updated Mantaflow source files
New files include fixes for obj mesh import and minor cleanups.
2020-07-14 22:21:15 +02:00
Sebastián Barschkis
ba380fc0bf Fix T78213: Windows 10 Build Errors: Extern_Manaflow error messages
Kudos to LazyDodo for figuring this out
2020-06-24 18:01:34 +02:00
Sebastián Barschkis
9fe64948ab Fluid: Updated Mantaflow source with latest OpenVDB changes
This updated set of Mantaflow files includes the improved  OpenVDB file IO. With this update it is finally possible to store multiple grids per file. It is also possible to save particle systems and particle data to OpenVDB files.
2020-06-24 16:07:35 +02:00
Sebastián Barschkis
7f3e84deb5 Fluid: Updated manta pp files
Includes only a rename. The name PyInit_Main was a bit confusing as it just belongs to Manta.
2020-03-17 11:57:04 +01:00
Sebastián Barschkis
35a29befb3 Fluid: Updated Manta pp files
Includes additional minmax check for Windows
2020-03-16 11:52:18 +01:00
Sebastián Barschkis
21bdeb5cc0 Fluid: Updated Manta pp files
Updates include:
- std::move() cleanup in rcmatrix.h
- Enabled parallelization for fluid guiding (fairly noticeable speed improvement).
- More flexible flags setter function with control over boundary width.
2020-02-28 16:20:13 +01:00
Sebastián Barschkis
39ae4804a8 Fix T72789: Mantaflow cache doesn't work with non-latin cache directory
Root of the problem was that Manta's Python API was converting to and from Latin1 instead of UTF8.
2020-01-23 17:15:45 +01:00
Sebastián Barschkis
542e0c67ba Fluid: Updated Mantaflow source files
The memory leak described in T72498 has been fixed in Mantaflow, the updated files should reflect this in Blender.
2020-01-15 16:27:55 +01:00
Sebastián Barschkis
4ff7c5eed6 Mantaflow [Part 1]: Added preprocessed Mantaflow source files
Includes preprocessed Mantaflow source files for both OpenMP and TBB (if OpenMP is not present, TBB files will be used instead).

These files come directly from the Mantaflow repository. Future updates to the core fluid solver will take place by updating the files.

Reviewed By: sergey, mont29

Maniphest Tasks: T59995

Differential Revision: https://developer.blender.org/D3850
2019-12-16 16:27:26 +01:00