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This update includes part of a performance boost from D12002.
Contributed by @erik85
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Just cleanup.
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Updated fluid source files in extern with clang-format.
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Contributed by @erik85 in D11400. The idea from this patch was placed in
a more generic context: A new FOR macro has been added that loops
over the neighbors of a cell within a given radius.
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Includes update for OpenVDB file IO, i.e. fixes an issue with
compression flag combination that resulted in random segfaults.
Other changes: Cleanup and formatting.
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It turns out that on official arm64 devices (not DevKit) the linker
warnings still show up. So just leaving this as is.
Ref D9002
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All headers in the svn libraries should be
building with /W0 however MSVC 16.8/16.9
has broken this functionality making OpenVDB
emit lots of warnings.
The breakage was reported [1] in august to MS
but they still have not gotten around to
addressing the issue.
This change explicitly suppresses C4251 in the
module that emitted these warnings. As the warning
is useful in other parts of blender a localized
approach is taken rather than a global suppression.
[1] https://developercommunity.visualstudio.com/content/problem/1167590/bug.html
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* USD and OpenVDB headers use deprecated TBB headers, suppress all deprecation
warnings there since we have no control over them.
* For our own TBB includes, use the individual headers rather than the tbb.h that
includes everything to avoid warnings, rather than suppressing all.
This is in anticipation of the TBB 2020 upgrade in D10359. Ref D10361.
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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
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Includes improvements for the file IO. Namely, more meta data will be written from now on.
This change is required to prevent IO issues (e.g. T84649) that arised through the use of sparse grids caching (introduced in 2.92).
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Includes minor fixes / cleanups from the viscosity plugin.
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Fixes issue where files would not be written when 'resumable' option was checked.
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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.
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Issues were:
* Abusing of `WITH_PYTHON_INSTALL_NUMPY` by both Audaspace and
Mantaflow.
- `PYTHON_INSTALL` options only decide whether we copy python (and
some extra modules) in our Blender installation. On linux it
makes much more sense to use global python installation.
- Now we have instead a proper `WITH_PYTHON_NUMPY`
* Bad assumptions regarding path of headers relative to path of python
module.
- In current Debian testing, modules are under `python3.9`
directory, while headers are under `python3` directory.
- Now we properly `find_path` for headers as well, modifying
`find_python_package` to take an optional argument for headers.
Note that the required changes done to `extern` libraries are in
blender-specific files that do not exist upstream.
Differential Revision: https://developer.blender.org/D9773
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This reverts commit 5d570c875eda8fb9aa3635f7f4edac0dc1eaedc8.
Buildbots are still borken, need more time to investigate.
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Issues were:
* Abusing of `WITH_PYTHON_INSTALL_NUMPY` by both Audaspace and
Mantaflow.
- `PYTHON_INSTALL` options only decide whether we copy python (and
some extra modules) in our Blender installation. On linux it
makes much more sense to use global python installation.
- Now we have instead a proper `WITH_PYTHON_NUMPY`
* Bad assumptions regarding path of headers relative to path of python
module.
- In current Debian testing, modules are under `python3.9`
directory, while headers are under `python3` directory.
- Now we properly `find_path` for headers as well, modifying
`find_python_package` to take an optional argument for headers.
Note that the required changes done to `extern` libraries are in
blender-specific files that do not exist upstream.
Differential Revision: https://developer.blender.org/D9773
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I also changed New BSD to BSD 3 Clause.
Differential Revision: https://developer.blender.org/D9791
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Includes outflow optimization - might have been the cause of instabilities.
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This update introduces two improvements from the Mantaflow repository:
(1) Improved particle sampling:
- Liquid and secondary particles are sampled more predictably. With all parameters being equal, baked particles will be computed at the exact same position during every bake.
- Before, this was not guaranteed.
(2) Sparse grid caching:
- While saving grid data to disk, grids will from now on be saved in a sparse structure whenever possible (e.g. density, flame but not levelsets).
- With the sparse optimization grid cells with a value under the 'Empty Space' value (already present in domain settings) will not be cached.
- The main benefits of this optimization are: Smaller cache sizes and faster playback of simulation data in the viewport.
- This optimization works 'out-of-the-box'. There is no option in the UI to enable it.
- For now, only smoke simulation grids will take advantage of this optimization.
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Switched from NULL to nullptr.
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Replace 'set' with 'string(APPEND/PREPEND ...)'.
This avoids duplicating the variable name.
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Updated version of APIC plugin in order to resolve ASAN issues.
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Fixes build issue
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Basic support for velocity updates with the APIC method.
This commit adds APIC to the already existing dropdown menu for the simulation method. The APIC plugin within Mantaflow has been updated to the latest version.
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Updated files includes:
- Fix for smoke / fire emission from particles
- Custom precision for liquid particles when saving in OpenVDB format
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This resolves a long list of linker warnings that is currently only showing up on macOS arm builds.
The warnings themselves are of this shape (one example):
```
ld: warning: direct access in function 'Manta::MeshDataImpl<Manta::Vector3D<float> >::_W_39(_object, object, object*)' from file '../../lib/libextern_mantaflow.a(mesh.h.reg.cpp.o)' to global weak symbol 'typeinfo for Manta::MeshDataImpl<Manta::Vector3D<float> >' from file '../../lib/libextern_mantaflow.a(mesh.cpp.o)' means the weak symbol cannot be overridden at runtime. This was likely caused by different translation units being compiled with different visibility settings.
```
Just would like to get your opinion to make sure this is an acceptable way to handle this on all platforms.
Reviewed By: LazyDodo
Differential Revision: https://developer.blender.org/D9002
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Among code cleanups, this update includes a new flood-fill helper function for levelsets.
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This would lead to problems when we build a dynamic openvdb library.
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This patch changes openvdb from a static to a dynamic library.
this is in preparation for enabling pyopenvdb at some point
in the future.
Differential Revision: https://developer.blender.org/D8282
Reviewed by: brecht
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This broke during the OpenVDB update for 2.90. Just making sure that guiding velocity files are being read correctly.
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-Wreorder was the issue.
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New files contain updated sampling function (support for maximum number of particles cap).
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Updated files include fixes for the mesh IO - read/write success was not propagated.
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Adjusted the fluid build system so that plugins that depend on numpy can be compiled as well.
Note that in this commit numpy support is still disabled. It can be enabled by re-running the Mantaflow update script with USE_NUMPY=1 and enabling WITH_MANTA_NUMPY in extern/mantaflow/CMakeLists.txt. This will happen in a future commit.
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No longer including unused dependencies. Should numpy IO be needed at some point, the Manta source update script can be configured so that the required dependencies are included again.
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Includes cleanup that resolves a -Wunused-but-set-variable warning.
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Refactored various functions after noticing new warnings when compiling on Apple DTK devices - there should now be fewer warnings when building.
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Version number was increased after recent OpenVDB IO changes.
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New files include fixes for obj mesh import and minor cleanups.
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Fixed issue in the upstream Mantaflow repository.
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Kudos to brecht for noticing the issue
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Kudos to LazyDodo for figuring this out
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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.
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Issue was introduced in 7bb3d9787ead with new Mantaflow files from 61280e5af3da.
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Includes changes for particle skipping during advection.
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Includes more flexible options for dt, dx in secondary particles plugin.
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structure
Issue was being caused by a particle offset which was random but the same for every particle.
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