Blender Git Loki

Merge branch 'master' into depsgraph_refactor

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

Graphviz debug support for relations on operations.

Add inter-relations for modifiers to represent the stack order.

Enabled relations build code for object geometry data (was still left
disabled from build code porting).

Default constructors for depsnode keys.

These initialize members properly and will return NULL node pointers in
any case, so they automatically function as invalid keys, until assigned
proper values.

Basic support for modifiers in the new depsgraph.

Modifiers are represented as a new geometry operation. Like with the
current modifier stacks, a typeinfo callback can be used to define
additional dependencies of a modifier on scene or object components
(currently implemented only for the shrinkwrap modifier for testing).

When this function is defined for a modifier, it gets an abstract
"DepsNodeHandle" pointer, which can be passed back to the depsgraph API
for creating the actual relations internally with minimal effort for the
modifier type and providing opportunities for internal error handling.

Avoid graphviz warnings from edges between a node and its owner cluster
by checking if a node relation points to the node's parent.

Minor fix for relation label strings (proper escaping for square
brackets in names).

Fix for RNAPathKey usage: strings can not be NULL.

Alternative builder method for adding operations to IDDepsNodes and fix
for driver operations.

Driver operation has to be added to the parameters component. To avoid
having to pass this explicitly, use a wrapper method which constructs
the associated component for an operation if necessary.

Display graph labels in graphviz debug output as an indication of what
evaluation step the resulting image represents.

Construct more useful name strings for IDDepsNodes.

Basic flushing for the depsgraph tags.

This uses a plain std queue for processing nodes atm. Might get a more
dedicated implementation later which handles node flags right away when
pushing/popping.

Extension for graphviz debug: Show tagging status of nodes as thicker
colored outlines during eval debugging.

Nicer function signatures for color and style printing.

Eval debugging: Use the eval debug callback during flushing.

Sneaky injection of new depsgraph tagging into the existing
DAG_id_tag_update function.

This way we can test flushing and scheduling for the new depsgraph
without having to touch hundreds of occurences. These will be changed
eventually once the new API reaches a stable level.

Made the DEG_node_tag_update function an internal method of Depsgraph.

It flags the node and also adds it to the Depsgraph entry_tags list, so
putting it into Depsnode itself is not really feasible.

Renamed the depsgraph_core source to depsgraph_tag now.

Only tagging-related functions are left there and it makes sense to have
them in one place.

Moved the validate_links and sort functions into the Depsgraph class as
methods.

These are not used and disabled atm, just keeping them around for now
in case they are still needed later.