Blender Git Loki

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.

Depsgraph: Make it more clear and explicit compile fail when required features are not found

Depsgraph: Remove legacy code from new depsgraph

Now we have no remaining WITH_LEGACY_DEPSGRAPH in the code.

Depsgraph: Remove command line argument to use new depsgraph

Depsgraph: Remove more legacy code from viewport

Depsgraph: Remove legacy updateDepgraph callbacks from modifiers

Depsgraph: Remove legacy implementation of depsgraph

Depsgraph: Remove legacy calls from scene update routines

Depsgraph: Remove special exception in update logging

Depsgraph: Remove special version of pose builder

Depsgraph: Remove legacy depsgraph code from viewport

Depsgraph: Remove legacy depsgraph code from transform

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