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Tweak the bias from the previous fix a bit to be more backwards compatible in
some scene. In the end which way we round is quite arbitrary, but keeping the
case where the texture coordinate is exactly zero the same seems better.
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Solution is to bias the coordinates a little, same as Cycles checker texture.
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Also remove duplicate & mismatching comments from grease-pencil header.
Keep comments close to implementation to avoid getting out of sync.
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Use for calculating the angle between 2 directions on an axis.
Also signed version and normalized plane projection,
use when input is normalized.
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Allow to quickly enable print & tree verify.
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Single axis version of mat3_from_axis_conversion,
when the second axis isn't important (orienting an arrow for eg).
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This leads to a crash in 2.8, but commiting here.
Patch by Campbell Barton.
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This is handy to have C++ guards for BLI functions so they
can be easily re-used in C++ code. This matches other headers
from this library as well.
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The idea is to accumulate all new tasks in a thread local queue
first without doing any thread synchronization (aka, locks and
conditional variables) and move those tasks to a scheduler queue
once they are all ready. This way we avoid per-task-pool lock
and only have one lock per bunch of tasks.
This is particularly handy when scheduling new dependency graph
node children. Brings FPS of cached simulation from the linked
below file from ~30 to ~50.
See documentation for BLI_task_pool_delayed_push_{begin, end}
and for TaskThreadLocalStorage::do_delayed_push.
Fixes T50027: Rigidbody playback and simulation performance regression with new depsgraph
Thanks Bastien for the review!
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Those are not depsgraph or C++ specific and can be used by everyone.
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This way everyone can benefit from it, not only dependency graph.
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The Issue
=======
For a long time now MinGW has been unsupported and unmaintained and at this point,
it looks like something that we should just leave behind and move on.
Why Remove
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One of the big motivations for MinGW back in the day is that it was free compared to MSVC which was licensed based.
However, now that this is no longer true we have basically stopped updating the need CMake files.
Along with the CMake files, there are several patches to the extern libs needed to make this work. For example, see:
https://developer.blender.org/diffusion/B/browse/master/extern/carve/patches/mingw_w64.patch
If we wanted to keep MinGW then we would need to make more custom patches to the external libs and
this is not something our platform maintainers are willing to do.
For example, here is the patches needed to build python: https://github.com/Alexpux/MINGW-packages/tree/master/mingw-w64-python3
Fixes T51301
Differential Revision: https://developer.blender.org/D2648
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Use to avoid accidental missing break statements,
use ATTR_FALLTHROUGH to suppress.
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Harmless but made accessing the first element read strangely.
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failure...
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Object Info node can be useful to give some variation to a single material assigned to multiple instances. This patch adds support for Viewport and BI.
{F499530}
Example: {F499528}
Reviewers: merwin, brecht, dfelinto
Reviewed By: brecht
Subscribers: duarteframos, fclem, homyachetser, Evgeny_Rodygin, AlexKowel, yurikovelenov
Differential Revision: https://developer.blender.org/D2425
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Did a mistake which started to use same TLS for all threads for such pools.
Also added some extra asserts to help catching the bugs.
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thread
We can not re-use anything for such pools, because we will know nothing about whether
the main thread is sleeping or not. So we identify such threads as 0, but we don't
use main thread's TLS.
This fixes dead-locks and crashes reported by Luca when doing playblasts.
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Handy to replace an existing link
(without having to store before/after links)
Use for id-props
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This was done some lines above by atomic fetch and and.
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There weren't any convenient ways to join multiple paths in C
that accounted for corner cases.
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This allows for adding separators in string literals.
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Replace with BLI_path_name_at_index
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Utility to get a file/dir in the path by index,
supporting negative indices to start from the end of the path.
Without this it wasn't straightforward to get
the a files parent directory name from a filepath.
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Was a mistake in one of the previous TLS commits.
See comment in the pool_create to see some details why it was crashing.
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Suspended pools allows to push huge amount of initial tasks
without any threading synchronization and hence overhead.
This gives ~50% speedup of cached rigid body with file from
T50027 and seems to have no negative affect in other scenes
here.
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The idea is to allow some amount of tasks to be pushed from working
thread to it's local queue, so we can acquire some work without doing
whole mutex lock.
This should allow us to remove some hacks from depsgraph which was
added there to keep threads alive.
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This allows us to avoid TLS stored in pool which gives us advantage of
using pre-allocated tasks pool for the pools created from non-main thread.
Even on systems with slow pthread TLS it should not be a problem because
we access it once at a pool construction time. If we want to use this more
often (for example, to get rid of push_from_thread) we'll have to do much
more accurate benchmark.
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