Blender Git Loki

Improve backscatter color of subsurface scattering in Principled BSDF

Differential Revision: https://developer.blender.org/D2685

Eevee: Put shadows and probes inside SceneLayerEngineData

This remove the duplication of data for each viewport improving memory usage.

Draw Manager: Add SceneLayerEngineData and use callbacks to clear runtime engine data

Fix T51667: blenderplayer building (tm)

Broken since 272ec8a7cfe671431b7a196fd2b34643512270f8

Fix T49570: Cycles baking can't handle materials with no images

If users wanted to bake only a few of the mesh materials, they would
still need to create dummy textures for the other parts.

This commit report (as RPT_INFO) the materials with no texture, but move
on to bake the others materials.

Baking: Add logic to get material from API regardless of Mesh/Object ownership

Depsgraph: Fix missing relations for objects which are indirectly linked

This is a corresponding part of 7dda3cf.

Depsgraph: Remove extra modifiers callback loop

Seems to be a copy-paste error from code above.

Move ED_object_facemap functions into ED_object.h

Somehow missed this in recent Face Maps commit

Since the previous layer type was for ints too, it worked in tests.

Eevee: UI add world and material nodetree layout.

Bpy Extras: Port cycles node functions to new node_utils.py

Eevee: Fix ggx sun light.

Displace modifier: Pre-fetch all possible images to image pool prior execution

This way we reduce amount of time wasted in spin-lock later on when all threads
are starting to sample texture.

Image pool: Use memory pool for allocating elements

Reduces amount of system-wide allocation calls. Will be
mainly visible when using lots of images in texture nodes
or regular BI rendering.

Depsgraph: Fix object being tagged for data update when it shouldn't

Depsgraph: Add missing update tag clear for proxy objects

This was causing proxies updates on every frame, even if they
do not really change. Additionally, it was causing second round
of armature update when used from inside dupligroup (viewport
ensures all objects from dupligroup are up to date before draw).

Alembic import: fixed bug interpolating between frames.

Alembic: simplified sub-frame sampling

It's now less confusing (for example, using nr_of_samples directly,
instead of using 1 / 1 / nr_of_samples). Might also have fixed a bug.

Also added unittests.

Alembic export: normalise the homogeneous component after scaling

The scale matrix must have its homogeneous 'w' (at mat[3][3]) set to the
scale in order to also scale the translations along with it. However, this
also scales the transform matrix's 'w' component, which is not supposed
to happen.