Blender Git Loki

Fix T83280: Crash when deleting hair collision collection.

Root of the issue was missing management of ID pointers in the cloth
modifier data stored in ParticleSystem for hair physics, in the
'foreach_id' particle system code.

Using modifier's 'foreach_id' code in psys one unfortunately requires
some ugly conversion gymnastics, but this is still better than having
dedicated code for that case.

Note that this is actually a fairly critical issue, fix should be
backported to 2.91.1 should we do it, and to 2.83 LTS as well I think.

Steam Release: Script creation of Steam build files

Script tool for automation of Steam build files for tasks like {T77348}

This script automates creation of the Steam files: download of the archives,
extraction of the archives, preparation of the build scripts (VDF files), actual
building of the Steam game files.

Requirements
============

* MacOS machine - Tested on Catalina 10.15.6. Extracting contents from the DMG
archive did not work Windows nor on Linux using 7-zip. All DMG archives tested
failed to be extracted. As such only MacOS is known to work.
* Steam SDK downloaded from SteamWorks - The `steamcmd` is used to generate the
Steam game files. The path to the `steamcmd` is what is actually needed.
* SteamWorks credentials - Needed to log in using `steamcmd`.
* Login to SteamWorks with the `steamcmd` from the command-line at least once -
Needded to ensure the user is properly logged in. On a new machine the user
will have to go through two-factor authentication.
* App ID and Depot IDs - Needed to create the VDF files.
* Python 3.x - 3.7 was tested.
* Base URL - for downloading the archives.

Reviewed By: Jeroen Bakker

Differential Revision: https://developer.blender.org/D8429

Version: Blender 2.83.11 beta

Blender v2.83.10 release

Version bump

Fix T82988: Div by zero with curve deform modifier

In `calc_curve_deform` a factor is calculated without checking if
the divisior is zero or close to zero. This patch adds the missing
checks and sets the factor to zero if the division shouldn't be
computed.

Reviewed By: mont29

Differential Revision: https://developer.blender.org/D9645

Fix T82729: Crash in rna_EffectorWeight_path when object has fluid and dynamic paint modifiers

Looks like prior to the introduction of mantaflow, the former
SmokeModifierData always had a domain initialized (even if its type was
set to None). Since mataflow, the FluidModifierData type needs to be set
to MOD_FLUID_TYPE_DOMAIN (otherwise domain is invalid)

Maniphest Tasks: T82729

Differential Revision: https://developer.blender.org/D9644

Fix T83055: setting rna pointer properties can create bogus custom properties

This was reported in the form of the eyedropper of the 'Parent' property
creating a custom property 'parent' if self was picked.

Problem arises when certain checks for setting rna pointer properties
failed (for example: the PROP_ID_SELF_CHECK check) and then a different
code path was entered (which was only meant for IDProperties).

Problem was introduced in rBa7b3047cefcb.

To solve, now first enter the branch for rna-based pointer properties,
then perform the sanity-checks (and if these fail: dont enter the other
unrelated codepath but instead do nothing)

Maniphest Tasks: T83055

Differential Revision: https://developer.blender.org/D9652

Fix memory leak writing PNG when opening the file fails

ImBuf: replace incorrect strstr use with memcmp

Besides being incorrect as only the first two bytes should be tested,
searching binary data using `strstr` can easily read past buffer bounds.

Fix T82555: Crash using copied object from Python

Also clear `gpd_eval` as this wasn't being copied either.

Fix T65585: Knife fails when cursor away from the object

Zeroed mouse coordinates were being used making projection fail.

Fix out of bounds array access in mathutils.noise

Regression in 0b2d1badecc48.

Blender 2.83.10 beta

Codesign: Report codesign errors from server to worker

Pass codesign errors (if any) from codesign buildbot server to the
buildbot worker, so that the latter one can abort build process if
the error happens. This solves issues when non-properly-notarized
DMG package gets uploaded to the buildbot website.

Blender 2.83.9 release

Fix own previous commit re testing of `BLI_rel_path`.

Windows would need its own version of those tests, for now just
disabling them on that platform.

Fix T81226: Crash opening 64bit files with endian switching

Endian switching when loading 64bit blend files on a 64bit system was
crashing as the endian switching is only applicable when loading
on 32 bit systems.

This crash goes back to 2.7x, it looks like this never worked
all the way back to the first commit.

Fix T81254: Incorrect calculation of EEVEE Transmittance Volumetrics

Regular rendering uses a custom blend mode, but render passes renders to
2 separate textures. This wasn't configured correctly inside the
fragment shaders. This patch adds a switch to configure the fragment
shader with the correct attachments.

Backport to Blender 2.83.

Reviewed By: Cl�ment Foucault

Differential Revision: https://developer.blender.org/D9038

Fix T81688: BPY_thread_save crashes with Python 3.9

Calling PyEval_ReleaseLock() was crashing with Python 3.9
because it accessed the NULL pointer set by PyThreadState_Swap().

This happened when calling ViewLayer.update() for example.

While the existing logic could be fixed by swapping the thread-state
back before calling PyEval_ReleaseLock(), this depends on functions
which are tagged to be removed by v4.0.

Replace use of deprecated functions by calling PyEval_SaveThread(),
instead of inlining the logic, using _PyThreadState_UncheckedGet()
to prevent Python aborting.

The call to PyEval_ThreadsInitialized has been removed
as threads are now initialized with Python.
This could be replaced with Py_IsInitialized() however it doesn't look
like this is necessary.

This is compatible with Python 3.7 & 3.9.

Fix T81520: Crash setting the Cycles device from Python