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
- Re-arrange locks, so no actual memory allocation
(which is relatively slow) happens from inside
the lock. operation system will take care of locks
which might be needed there on it's own.
- Use spin lock instead of mutex, since it's just
list operations happens from inside lock, no need
in mutex here.
- Use atomic operations for memory in use and total
used blocks counters.
This makes guarded allocator almost the same speed
as non-guarded one in files from Tube project.
There're still MemHead/MemTail overhead which might
be bad for CPU cache utilization
This modules does not depend on any blender-specific data
structures or algorithms and due to our policy better be
placed to intern/
Shall be no functional changes, tested CMake and SCons on
Linux, hopefully other platforms will work as well.
P.S. SVN history shall be preserved for the files.
This is just the basic structure, the simulation isn't hooked up yet.
Scenes get a pointer to a rigid body world that holds rigid body objects.
Objects get a pointer to a rigdid body object.
Both rigid body world and objects aren't used directly in the simulation
and only hold information to create the actual physics objects.
Physics objects are created when rigid body objects are validated.
In order to keep blender and bullet objects in sync care has to be taken
to either call appropriate set functions or flag objects for validation.
Part of GSoC 2010 and 2012.
Authors: Joshua Leung (aligorith), Sergej Reich (sergof)
Freestyle edge/face marks were ported to BMesh.
Conflicts resolved:
source/blender/editors/mesh/editface.c
source/blender/editors/space_view3d/drawobject.c
source/blender/makesdna/DNA_meshdata_types.h
source/blender/blenkernel/intern/editderivedmesh.c
The rendering device is now set in User Preferences > System, where you can
choose between OpenCL/CUDA and devices. Per scene you can then still choose
to use CPU or GPU rendering.
Load balancing still needs to be improved, now it just splits the entire
render in two, that will be done in a separate commit.
Conflicts resolved:
source/blender/makesdna/intern/makesdna.c
source/blender/makesrna/RNA_enum_types.h
source/blender/render/intern/source/shadeinput.c
source/blenderplayer/bad_level_call_stubs/stubs.c
Additional changes:
* source/blender/makesrna/intern/rna_linestyle.c: Fixed white
space issues that generated a number of compiler errors. The
problem was that two string literals for enumerating MA_RAMP_SOFT
and MA_RAMP_LINEAR contained a space. The string literals are
supposed to represent a valid C identifier because of their use
for automatic code generation.
* Stroke transparency has been temporarily disabled due to a
functionality conflict with some merged changes. A fix of this
issue is planned.
- Make gettext stuff draw-time. so switching between languages
can happens without restart now.
- Added option to translate visible interface (menus, buttons, labels)
and tooltips. Now it's possible to have english UI and localized tooltips.
- Clean-up sources, do not use gettext stuff for things which can be
collected with RNA.
- Fix issues with windows 64bit and ru_RU locale on my desktop
(it was codepage issue).
- Added operator "Get Messages" which generates new text block with
with all strings collected from RNA.
- Changed script for updating blender.pot so now it appends
messages collected from rna to automatically gathered messages.
To update .pot you have to re-generate messages.txt using "Get Messages"
operator and then run update_pot script.
- Clean up old translation stuff which wasn't used and most probably
wouldn't be used.
- Return back "International Fonts" option, so if it's disabled, no
gettext lookups happens on draw.
- Merged read_homefile function back. No need in splitting it.
TODO:
- Custom fonts and font size.
Current font isn't nice at least for russian locale, it's
difficult to read it.
- Put references to messages.txt so gettext can merge translation when
name/description of some property changes.
Conflicts resolved:
source/blender/makesrna/intern/rna_scene.c
source/blender/python/intern/CMakeLists.txt
Note for branch builders: Enabling Blender Player may cause linker errors.
This branch adds mostly organizational improvements to the node system by renaming the node folders and files. A couple of internal features have been added too.
Detailed information can be found on the wiki page:
http://wiki.blender.org/index.php/User:Phonybone/Particles2010
Change OURPLATFORM from "linux<major_version>" to simple "linux".
Since new policy for linux kernel versions that major version in
platform doesn't make much sense for building rules so the same
rules could be used for both of linux2 and linux3 now/
Tested on both of linux2 and linux3 systems.
