Blender Git Loki

Logic for subgraph node type

Placeholder flags define for subgraph node

This may/may not be needed, and may/may not have all the flags we need

Set PointerRNA on driver to point to the driver being evaluated

Added skeleton outline for subgraph node

Added node-type for representing "isolated subgraphs"

This will primarily be used for things like Groups and Instancing

Note for where eval contexts may be initialised...

Assorted porting fixes for the subs added

Stubbing in more unported constraints logic

Stubbing in constraint logic from trunk - unported...

Added skeleton for how an operation node will get executed

Added some more todo notes for how flushing should work

Free entry tags after flushing updates

All tagged nodes should be reachable from root once the updates have been
flushed...

Skeleton API's for flushing/tagging nodes to update

Free temp data in graph when done

Added API method to tag a node as needing updates

* Such nodes are also tagged as being the "source" of such updates,
allowing us to later prune the updates tagged if they don't lead
somewhere where we need results

* Added list/cache in Depsgraph to keep track of these nodes, to make it
easier/faster to quickly start reaching outwards from these...

Rename API method for flushing updates - it doesn't have anything to do with scene...

Skeleton for evaluation entrypoints

Create new file to host all evaluation-related logic

Only build bone constraints stack if it has some constraints

WIP code to get object graph building to use the standard constraints stack function