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Also use doxy style function reference `#` prefix chars when
referencing identifiers.
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After looking into task isolation issues with Sergey, we couldn't find the
reason behind the deadlocks that we are getting in T87938 and a Sprite Fright
file involving motion blur renders.
There is no apparent place where we adding or waiting on tasks in a task group
from different isolation regions, which is what is known to cause problems. Yet
it still hangs. Either we do not understand some limitation of TBB isolation,
or there is a bug in TBB, but we could not figure it out.
Instead the idea is to use isolation only where we know we need it: when
holding a mutex lock and then doing some multithreaded operation within that
locked region. Three places where we do this now:
* Generated images
* Cached BVH tree building
* OpenVDB lazy grid loading
Compared to the more automatic approach previously used, there is the downside
that it is easy to miss places where we need isolation. Yet doing it more
automatically is also causing unexpected issue and bugs that we found no
solution for, so this seems better.
Patch implemented by Sergey and me.
Differential Revision: https://developer.blender.org/D11603
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Under some circumstances using task isolation can cause deadlocks.
Previously, our task pool implementation would run all tasks in an
isolated region. Now using task isolation is optional and can be
turned on/off for individual task pools.
Task pools that spawn new tasks recursively should never enable
task isolation. There is a new check that finds these cases at runtime.
Right now this check is disabled, so that this commit is a pure refactor.
It will be enabled in an upcoming commit.
This fixes T88598.
Differential Revision: https://developer.blender.org/D11415
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And re-enable the test on macOS Arm.
Ref T78710
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Comment blocks not conforming to convention.
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In comments made by a tester on rB17b89f6dacba007bf, it seems that baking
of the spray maps would be useful. This commit adds that capability. Both
the spray map and its inverse are baked out in this change, for maximum
convenience and to avoid assuming what the user wants.
Differential Revision: https://developer.blender.org/D8470
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This addresses warnings from Clang-Tidy's `readability-else-after-return`
rule in the `source/blender/blenkernel` module.
No functional changes.
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The modifier needs to check that the cached ocean has the correct
resolution.
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Following work done in 2.83, the resolution control is now a real
level-of-detail parameter. It is now useful to be able to set the
resolution for display independently from render. This is true for
both mesh generation and mesh deformation modes.
For compatibility with old scenes, resolution is retained and is the
render resolution. Old modifiers loaded have the value of resolution
also applied to viewport resolution. This allows newer modifiers to
be used in older versions without trouble
Differential Revision: https://developer.blender.org/D8336
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Clang Tidy reported a couple of false positives. I disabled
those `NOLINTNEXTLINE`.
Differential Revision: https://developer.blender.org/D8199
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The ocean modifier has two properties that use a [0, 10] hard min and
hard max. The values act as factors though, so it makes more sense to
use sliders and a 0 to 1 range.
This commit also bumps the file subversion to avoid repeatedly applying
the change to the properties' range.
Differential Revision: https://developer.blender.org/D8186
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This patch enables TBB as the default task scheduler. TBB stands for Threading Building Blocks and is developed by Intel. The library contains several threading patters. This patch maps blenders BLI_task_* function to their counterpart. After this patch we can add more patterns. A promising one is TBB:graph that can be used for depsgraph, draw manager and compositor.
Performance changes depends on the actual hardware. It was tested on different hardwares from laptops to workstations and we didn't detected any downgrade of the performance.
* Linux Xeon E5-2699 v4 got FPS boost from 12 to 17 using Spring's 04_010_A.anim.blend.
* AMD Ryzen Threadripper 2990WX 32-Core Animation playback goes from 9.5-10.5 FPS to 13.0-14.0 FPS on Agent 327 , 10_03_B.anim.blend.
Reviewed By: brecht, sergey
Differential Revision: https://developer.blender.org/D7475
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In preparation for {D7475}
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Tasks: move priority from task to task pool {rBf7c18df4f599fe39ffc914e645e504fcdbee8636}
Tasks: split task.c into task_pool.cc and task_iterator.c {rB4ada1d267749931ca934a74b14a82479bcaa92e0}
Differential Revision: https://developer.blender.org/D7385
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This extends the ocean modifier to add new spectra
(Pierson-Moskowitz, Jonswap, TMA).
These models are very different to the Phillips spectrum.
They are intended for more established,
large area, oceans and/or shallow water situations.
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This takes the idea from the aaOcean library to link the RNG seed to the
surface point, so that changing resolution only adds/remove surface detail.
Differential Revision: https://developer.blender.org/D6871
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When the result isn't used, prefer post increment/decrement
(already used nearly everywhere in Blender).
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TLS and Settings can be used by other types of parallel 'for loops', so
removing 'Range' from their names.
No functional changes expected here.
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Prepare for enabling ReflowComments.
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Apply clang format as proposed in T53211.
For details on usage and instructions for migrating branches
without conflicts, see:
https://wiki.blender.org/wiki/Tools/ClangFormat
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While \file doesn't need an argument, it can't have another doxy
command after it.
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Move \ingroup onto same line to be more compact and
make it clear the file is in the group.
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BF-admins agree to remove header information that isn't useful,
to reduce noise.
- BEGIN/END license blocks
Developers should add non license comments as separate comment blocks.
No need for separator text.
- Contributors
This is often invalid, outdated or misleading
especially when splitting files.
It's more useful to git-blame to find out who has developed the code.
See P901 for script to perform these edits.
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Continuation of https://developer.blender.org/D3802
Reviewers: brecht
Differential Revision: https://developer.blender.org/D3808
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The 'Apply Modifier' button calls the modifier code on the original
object instead of an evaluated copy, which doesn't have an initialised
Ocean *.
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Some code was copied with 'keep in sync with xxx' comments added to it.
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The approach of setting 'refresh' flags on the modifier, and performing
the associated actions when the modifier is being evaluated, is a bad
one. Instead, we use the separation of the original and the evaluated
copy to 'refresh' certain things (because they simply aren't set at all
on the original). Other actions are now done directly with BKE_ocean_xxx
functions on the original data, intead of during evaluation.
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- Use BLI_threadpool_ prefix for (deprecated)
thread/listbase API.
- Use BLI_thread as prefix for other functions.
See P614 to apply instead of manually resolving conflicts.
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Those pointers are never to be aliased, so let's be explicit about this and hope
compiler does save some CPU ticks.
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Now all the fine-tuning is happening using parallel range settings structure,
which avoid passing long lists of arguments, allows extend fine-tuning further,
avoid having lots of various functions which basically does the same thing.
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Wrap all arguments into TLS type of argument. Avoids some branching and also
makes it easier to extend things in the future.
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this patch resolves the following warnings;
```
Warning C4028 formal parameter 1 different from declaration blenkernel\intern\ocean.c 764
Warning C4098 'attach_stabilization_baseline_data': 'void' function returning a value blenkernel\intern\tracking_stabilize.c 139
Warning C4028 formal parameter 3 different from declaration blenkernel\intern\cachefile.c 148
Warning C4028 formal parameter 3 different from declaration blenkernel\intern\paint.c 413
Warning C4028 formal parameter 1 different from declaration blenkernel\intern\editderivedmesh.c 591
Warning C4028 formal parameter 3 different from declaration blenkernel\intern\library_remap.c 709
Warning C4028 formal parameter 1 different from declaration blenkernel\intern\ocean.c 754
Warning C4028 formal parameter 1 different from declaration blenkernel\intern\ocean.c 758
Warning C4028 formal parameter 1 different from declaration blenkernel\intern\ocean.c 759
Warning C4028 formal parameter 1 different from declaration blenkernel\intern\ocean.c 763
Warning C4028 formal parameter 1 different from declaration blenkernel\intern\ocean.c 764
Warning C4028 formal parameter 1 different from declaration blenkernel\intern\ocean.c 765
Warning C4028 formal parameter 1 different from declaration blenkernel\intern\ocean.c 769
Warning C4028 formal parameter 1 different from declaration blenkernel\intern\ocean.c 770
Warning C4028 formal parameter 1 different from declaration blenkernel\intern\DerivedMesh.c 3458
```
It's mostly things where the signature in the .h and the actual implementation in the .c do not match. And a bunch functions who do not match the TaskRunFunction declaration cause they leave out the __restrict keyword.
Reviewers: brecht, juicyfruit, sergey
Reviewed By: sergey
Subscribers: Blendify
Differential Revision: https://developer.blender.org/D2268
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Based on usages so far:
- Split callback worker func in two, 'basic' and 'extended' versions. The former goes back
to the simplest verion, while the later keeps the 'userdata_chunk', and gets the thread_id too.
- Add use_threading to simple BLI_task_parallel_range(), turns out we need this pretty much systematically,
and allows to get rid of most usages of BLI_task_parallel_range_ex().
- Now BLI_task_parallel_range() expects 'basic' version of callback, while BLI_task_parallel_range_ex()
expectes 'extended' version of the callback.
All in all, this should make common usage of BLI_task_parallel_range simpler (less verbose), and add
access to advanced callback to thread id, which is mandatory in some (future) cases.
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Compared to previous revision, this gives 20% speedup on the whole modifier evaluation!
Wondering a bit how improvement can be so impressive here, would have expected very
small increases given how simple is the code here... Maybe it's the fact we get rid
of many additional OMP threads (tests are done with ten Ocean mod evaluated in parallel)?
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Not much to say, gives about 8% to 9% speedup in ocean simulation.
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Official Documentation:
http://www.blender.org/manual/render/workflows/multiview.html
Implemented Features
====================
Builtin Stereo Camera
* Convergence Mode
* Interocular Distance
* Convergence Distance
* Pivot Mode
Viewport
* Cameras
* Plane
* Volume
Compositor
* View Switch Node
* Image Node Multi-View OpenEXR support
Sequencer
* Image/Movie Strips 'Use Multiview'
UV/Image Editor
* Option to see Multi-View images in Stereo-3D or its individual images
* Save/Open Multi-View (OpenEXR, Stereo3D, individual views) images
I/O
* Save/Open Multi-View (OpenEXR, Stereo3D, individual views) images
Scene Render Views
* Ability to have an arbitrary number of views in the scene
Missing Bits
============
First rule of Multi-View bug report: If something is not working as it should *when Views is off* this is a severe bug, do mention this in the report.
Second rule is, if something works *when Views is off* but doesn't (or crashes) when *Views is on*, this is a important bug. Do mention this in the report.
Everything else is likely small todos, and may wait until we are sure none of the above is happening.
Apart from that there are those known issues:
* Compositor Image Node poorly working for Multi-View OpenEXR
(this was working prefectly before the 'Use Multi-View' functionality)
* Selecting camera from Multi-View when looking from camera is problematic
* Animation Playback (ctrl+F11) doesn't support stereo formats
* Wrong filepath when trying to play back animated scene
* Viewport Rendering doesn't support Multi-View
* Overscan Rendering
* Fullscreen display modes need to warn the user
* Object copy should be aware of views suffix
Acknowledgments
===============
* Francesco Siddi for the help with the original feature specs and design
* Brecht Van Lommel for the original review of the code and design early on
* Blender Foundation for the Development Fund to support the project wrap up
Final patch reviewers:
* Antony Riakiotakis (psy-fi)
* Campbell Barton (ideasman42)
* Julian Eisel (Severin)
* Sergey Sharybin (nazgul)
* Thomas Dinged (dingto)
Code contributors of the original branch in github:
* Alexey Akishin
* Gabriel Caraballo
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use bools for return values and some api naming consistency.
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Opted to keep includes if they are used indirectly (even if removing is possible).
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