Blender Git Loki

Fix crashes when opening new windows

Find correct scene from screen in RNA callbacks

Cycles: Deduplicate numerical code in the WLR bandwidth estimation

Also includes some documentation about what this code actually does.

Add nesting collections into unittest

Revert "Cycles Experimental Build v4"

This reverts commit 05aefabb7b9c16c6774c5d0f758b2d76b59f21b9.

Cycles Experimental Build v4

Generally the same as last time, but now the denoising black spot bug on Windows should be fixed.

Also, this version includes skipping attributes for nodes that are optimized away (D2285) and an operator for saving the current viewport rendering state as a Render Result.

Temporary UI for layer/collections (for debug/testing)

Make hide/hide_select icons dynamic

Merge remote-tracking branch 'origin/master' into experimental-build

Merge remote-tracking branch 'origin/master' into soc-2016-cycles_denoising

Conflicts:
source/blender/makesrna/intern/rna_render.c

From review: "doxygen"

I do not compile doxygen (assuming it is compiled, I do not even know). But it does not hurt to add the extra * everywhere

Merge remote-tracking branch 'origin/blender2.8' into render-layers

Fresh morning fixup of iterator logics

(and fix unfreed memory)

Cycles: Move normal equation solver into a separate function and rename a few variables for clarity

Cycles: Replace T-SVD algorithm with new Jacobi Eigendecomposition solver

The code that was used for the T-SVD before came from the WLR reference implementation,
but had numerical problems on Windows and would often cause NaNs.

This commit replaces it with a new implementation using Eigendecomposition based on the Jacobi Eigenvalue Method.
That should:
- Give a slight performance boost (probably not noticable, since the T-SVD was no bottleneck to begin with)
- Improve numerical accuracy of the results (not very important either since the eigenvalues are only compared against a threshold)
- FINALLY solve the black spot issue on Windows
- Slightly reduce memory usage (singular values are now constructed on the diagonal of the input matrix) with the potential of more in the future (now only the lower-triangular part is required).
- Resolve potential licensing issues - the specific file containing the original code didn't come with any licensing information, and the main file contains an apparently custom license...

Cycles: Declare more utility function arguments const

Cycles: Include util_math_matrix.h in CMake

crash fix with FM and forcefields

Proper handling of IDs in do_versions_after_liblink.

Basic idea is to store fileversion in Library datablock, and split again
Main by libraries after lib linking, do_versions_after_liblink on
those separated Mains, and merge again.

This allows to still have correct versions for each data-block in that
second do_versions step.

Fixup on BKE_scene_objects_Iterator_next