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Reviewed By: campbellbarton, brecht, mont29
Differential Revision: https://developer.blender.org/D5799
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Compressing blendfiles can help save a lot of disk space, but the slowdown
while loading and saving is a major annoyance.
Currently Blender uses Zlib (aka gzip aka Deflate) for compression, but there
are now several more modern algorithms that outperform it in every way.
In this patch, I decided for Zstandard aka Zstd for several reasons:
- It is widely supported, both in other programs and libraries as well as in
general-purpose compression utilities on Unix
- It is extremely flexible - spanning several orders of magnitude of
compression speeds depending on the level setting.
- It is pretty much on the Pareto frontier for all of its configurations
(meaning that no other algorithm is both faster and more efficient).
One downside of course is that older versions of Blender will not be able to
read these files, but one can always just re-save them without compression or
decompress the file manually with an external tool.
The implementation here saves additional metadata into the compressed file in
order to allow for efficient seeking when loading. This is standard-compliant
and will be ignored by other tools that support Zstd.
If the metadata is not present (e.g. because you manually compressed a .blend
file with another tool), Blender will fall back to sequential reading.
Saving is multithreaded to improve performance. Loading is currently not
multithreaded since it's not easy to predict the access patterns of the
loading code when seeking is supported.
In the future, we might want to look into making this more predictable or
disabling seeking for the main .blend file, which would then allow for
multiple background threads that decompress data ahead of time.
The compression level was chosen to get sizes comparable to previous versions
at much higher speeds. In the future, this could be exposed as an option.
Reviewed By: campbellbarton, brecht, mont29
Differential Revision: https://developer.blender.org/D5799
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Instead of handling mmap, compression etc. all directly in readfile.c, refactor
the code to use a generic FileReader.
This makes it easier to add new compression methods or similar, and allows to
reuse the logic in other places (e.g. thumbnail reading).
Reviewed By: campbellbarton, brecht, mont29
Differential Revision: https://developer.blender.org/D5799
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With the ongoing transition to C++ files, Windows build
breaks often because of designated initializers.
Now we have two compilers to catch the MSVC build error on.
Reviewed By: #platform_macos, brecht, campbellbarton
Differential Revision: https://developer.blender.org/D11940
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- Use early return when kerning isn't used.
- Remove early return that prevented matching acquire/release calls.
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Functions in this file were scattered and not well organized.
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Also hyphenate 'mouse-move' use doxy sections in render_update.c &
move function comment from the header to the source.
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Optimization of font kerning by only caching kerning values after a
pair is encountered. Also saves unscaled values so they don't have to
be rebuilt between font size changes.
See D12274 for more details and speed comparison.
Differential Revision: https://developer.blender.org/D12274
Reviewed by Campbell Barton
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Updates sphinx and the theme to the latest version along with any of their dependencies.
Note that we will be sticking to sphinx 4.1.1 until sphinx 4.2 for the same reasons listed in:
https://developer.blender.org/rBM8334
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Differential Revision: https://developer.blender.org/D12277
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This got accidentally introduced while revising dependencies between
patches for this feature, did not notice until it was too late.
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This adds a setting to enable data caching, and another one to set the
maximum cache size in megabytes.
When caching is enabled we load the data for the entire animation in
memory, as we already do, however, if the data exceeds the memory limit,
render is aborted.
When caching is disabled, we simply load the data for the current frame
in memory.
Ref D10197
Reviewed By: brecht
Differential Revision: https://developer.blender.org/D11163
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Assignment missed.
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`td->loc` is referenced but not initialized.
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The multi-function network system was able to compose multiple
multi-functions into a new one and to evaluate that efficiently.
This functionality was heavily used by the particle nodes prototype
a year ago. However, since then we only used multi-functions
without the need to compose them in geometry nodes.
The upcoming "fields" in geometry nodes will need a way to
compose multi-functions again. Unfortunately, the code removed
in this commit was not ideal for this different kind of function
composition. I've been working on an alternative that will be added
separately when it becomes needed.
I've had to update all the function nodes, because their interface
depended on the multi-function network data structure a bit.
The actual multi-function implementations are still the same though.
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This was missing from rBfecec1644ce54ea386eaeed5ca6748d4a7b2737b.
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Avoid API misuse that caused leaks in T90791 &
2788b0261cb7d33a2f6f2978ff4f55bb4987edae.
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This function only makes sense for undo which doesn't
initialize the meshes ID. Otherwise BKE_id_free should be used.
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Even though this didn't leak memory, BKE_mesh_free_data doesn't
handle freeing data that is part of the ID making it error prone.
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Error in 2788b0261cb7d33a2f6f2978ff4f55bb4987edae.
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It wasn't obvious this didn't free the memory of the mesh it's self
leading to memory leaks.
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As subdivision objects are first class citizens in Alembic, to
differentiate them with non-subdivided polygon meshes, the Alembic
Procedural automatically sets up subdivision properties on the generated
Cycles Mesh.
However, for real-time playback subdivision is far too slow, so this
modifies the detection of a MeshSeqCache modifier used to activate the
procedural to allow for a Subsurf modifier right after the cache one. If
present, the procedural will tag the object for subdivision, if absent, the
object will be treated as a regular mesh.
This is a temporary measure for until subdivision surface settings are part
of the Mesh datablock (see T68891).
Reviewed By: brecht
Differential Revision: https://developer.blender.org/D11162
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This was missing from rBb8ecdbcd964a.
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