Blender Git Loki

Rigidbody: Add option to choose mesh source for collision shapes

The options are:
Base: Base mesh
Deform: shape keys and deform modifiers
Final: All deformations and modifiers

It would be nice to have a way of specifying where exactly in the
modifier stack the collision shape is generated. However this is not
staight forward since the rigid body simulation is not part of the
modifier system and would require hacks to make it work.

Usual minor UI messages fixes...

Avoid temporary change of animation data flags for nodes filter

Use temporary runtime flag of filter_mode argument instead.

This commit also fixes some weirdo mix of filter_mode with
filterflag bits.

Bullet: Update to svn r2719

Fixes part of T37905, fixed constraint didn't work correctly.

Threaded object update and EvaluationContext

Summary:
Made objects update happening from multiple threads. It is a task-based
scheduling system which uses current dependency graph for spawning new
tasks. This means threading happens on object level, but the system is
flexible enough for higher granularity.

Technical details:

- Uses task scheduler which was recently committed to trunk
(that one which Brecht ported from Cycles).

- Added two utility functions to dependency graph:
* DAG_threaded_update_begin, which is called to initialize threaded
objects update. It will also schedule root DAG node to the queue,
hence starting evaluation process.

Initialization will calculate how much parents are to be evaluation
before current DAG node can be scheduled. This value is used by task
threads for faster detecting which nodes might be scheduled.

* DAG_threaded_update_handle_node_updated which is called from task
thread function when node was fully handled.

This function decreases num_pending_parents of node children and
schedules children with zero valency.

As it might have become clear, task thread receives DAG nodes and
decides which callback to call for it.

Currently only BKE_object_handle_update is called for object nodes.

In the future it'll call node->callback() from Ali's new DAG.

- This required adding some workarounds to the render pipeline.
Mainly to stop using get_object_dm() from modifiers' apply callback.
Such a call was only a workaround for dependency graph glitch when
rendering scene with, say, boolean modifiers before displaying
this scene.

Such change moves workaround from one place to another, so overall
hackentropy remains the same.

- Added paradigm of EvaluaitonContext. Currently it's more like just a
more reliable replacement for G.is_rendering which fails in some
circumstances.

Future idea of this context is to also store all the local data needed
for objects evaluation such as local time, Copy-on-Write data and so.

There're two types of EvaluationContext:

* Context used for viewport updated and owned by Main. In the future
this context might be easily moved to Window or Screen to allo
per-window/per-screen local time.

* Context used by render engines to evaluate objects for render purposes.
Render engine is an owner of this context.

This context is passed to all object update routines.

Reviewers: brecht, campbellbarton

Reviewed By: brecht

CC: lukastoenne

Differential Revision: https://developer.blender.org/D94

Fix T37945: Crash after undo

Issue was caused by some typos in readfile.c made in
original commit of image cache rewrite.

Simplify isect_point_poly_v2 functions using angle_signed_v2v2

Cycles / Hair: Further cleanup of UI and internals.

* UI: Remove deprecated condition (CURVE_RIBBONS) and hide backface property, when it's hardcoded in C (Curve/Line segments && Ribbons).

* Remove "use_tangent_normal" and "CURVE_KN_TANGENTGNORMAL" as its unused (follow up for last commit).

Polyfill: minor changes to which fix rare errors with float precision

Fix T37946: Error filling ngons

Cycles / Hair: Some cleanup and optimizations for hair code.

* Remove dead code from line segments BVH refine.
CURVE_KN_TANGENTGNORMAL and CURVE_KN_TRUETANGENTGNORMAL are either both true, or both false. Therefore a true/false condition is impossible.
This was a leftover of CURVE_CUSTOM, which was removed in r59234.

* Use "else if" in blender_curves.cpp.

correction to last commit

Correct alloc string and comment in makesdna

Fix T37939: Crash on exit (reading from freed node trees)

correction to last commit

BGE: Add missing NULL check from recent LOD updates

Code Cleanup: remove object arg to CDDM_from_mesh mesh_create_derived

Missed this in last commit

3D View: Draw rigid body collision shapes.

3D View: Fix drawing bounds for game engine

Needs to be drawn around the origin to accurately represent collision
shapes.