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This also increases the tolerances in is_orthogonal / is_orthonormal functions,
which were much too low for practical purposes.
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Use for edge-split (a little less overhead compare to popping each item).
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use when the length of the destination string is needed.
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Only print backtrace on debug builds, since on release builds there is
only some useless output from a python library and fftw.
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Allocate statistics array dynamically, so increasing max number of threads does
not increase sloppyness of the memory usage.
For the further cleanups: we can try alloca-ing this array, but it's also not
really safe because we can have quite huge number of threads in the future.
Plus statistics will allocate memory for each individual entry, so using alloca
is not going to give anything beneficial here.
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Was using pointer hashing when the keys are in fact uint's.
Since they're well distributed from the rangetree,
no need to do bit-shifting tricks. just use int as hash.
Gives ~8% speedup in own tests.
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Here again, stat on '\\MYSERVER\foo\..' does not work...
Anyway, we can handle this in a much much simpler way using
BLI_access and BLI_parent_dir...
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On windows empty dirs are completely empty - no par or current entries
are listed either, in those cases artificially add those.
Furthermore, stat on UNC paths do not support current/parent 'shortcuts'
(i.e. things like '\\SERVER\foo\bar\..' do not work), so we have to hack
around that mess...
This should ensure us we always do have valid parrent entry...
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Useful for projecting one vector onto another (as a plane).
This is a rather common operation,
doing inline isn't always obvious whats happening.
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Prevent crashes from out of bounds array access if an invalid rotation mode
is passed to the euler rotation blenlib calculations.
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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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Depends on imbuf, problematic for tests
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Image clipping didn't take rotation into account.
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Spotted by Coverity.
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It was unleashed with recent ghash commit and issue seems to
be the same as fixed in 69065b5b.
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utils to API.
This patch is the root of the GHash rework, all other diff will be based on it:
Reduce average load from 3.0 to 0.75
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This is the big performance booster part, e.g. makes tracing a dyntopo stroke between 25% and 30% faster.
Not much to say about it, aside that it obviously increase memory footprint (about 25% - 30% too).
Add optional shrinking
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I.e. ghashes/gsets can now shrink their buckets array when you remove enough entries. This remains optional and OFF by default.
Add code to use masking instead of modulo
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Buckets indices are obtained from hashes by “reducing” the hash value into the valid bucket range. This can be done either by bit-masking, or using modulo operation.
The former is quicker, but requires real hashes, while the later is slower (average 10% impact on ghash operations) but can also be used as a 'fake' hashing on raw values, like e.g. indices.
In Blender currently not all ghash usages actually hash their keys, so we stick to modulo for now (masking is ifdef’ed out), we may however investigate the benefits of switching to masking with systematic very basic hashing later…
Add various missing API helpers
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I.e. a way to deep-copy a ghash/gset, and a way to (re-)reserve entries (i.e. manually grow or shrink the ghash after its creation).
Various code refactoring
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* Get rid of the 'hack' regarding ghash size when used as gset (it’s simpler and safer to have two structs defined here, and cast pointers as needed).
* Various re-shuffle and factorization in low-level internal code.
* Some work on hashing helpers, introducing some murmur2a-based hashing too.
Thanks a bunch to Campbell for the extensive review work. :)
Reviewers: sergey, campbellbarton
Subscribers: psy-fi, lukastoenne
Projects: #bf_blender
Maniphest Tasks: T43766
Differential Revision: https://developer.blender.org/D1178
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This adds back rgb_to_grayscale,
not all color is managed or depends on the current loaded blend file's CM options.
Noted in comments that this is only to be used outside the CM pipeline.
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