Blender Git Loki

Review: Add infinite weight flags enum

Review: Move stuff to helper func and more cleanup

Review: Optimize numpoly calculation

Review: Join allocations and some bpoly refactor

Review: Combine allocations and minor cleanup

Review: Report errors in UI and some more cleanup

Review: Fix depsgraph relation

Review: Fix indentations and use MEM_SAFE_FREE

Review: Replace weight_components with individual variables

Review: More cleanup...

Review: Inline loop indices

Also fixed endian switch sign, and UI Python thingy...

Cycles: Set device ideal global work size for split kernel

With this the split kernel is running quite a bit faster on some
devices. Other devices will still need more testing.

Cycles: Add split_kernel_global_size function

This is to allow devices to suggest a good global work size. Only
implemented for OpenCL devices right now.

Cycles: Expose passes size to device tasks

This is needed so devices can know the size of a tile buffer before any
tiles are acquired.

Cycles: Add DeviceSplitKernel::max_elements_for_max_buffer_size

Will be used for deciding on a good work size.

Cycles: Rework work stealing

Previous implementation of work stealing didn't do what it claimed to do
and made some odd assumptions. This new implementation is cleaner,
organizes work in a slightly more optimal way, and most importantly
decouples work from tile size, which will allow for greater speed ups.

Cycles: Silence warning about redefined macro

Cycles: Remove everything parallel samples from the split kernel

Parallel samples never actually worked, was producing incorrect results
or crashes, and wasn't any faster than work stealing, so removing it.

FIX T49899: Add EIGEN_MAKE_ALIGNED_OPERATOR_NEW to classes that use eigen's data types , to force aligned on 16 byte boundaries.

Fix T49857: Blender crashes after adding texture node to compositing tree