replaces another so it can do updates (e.g. dopesheet editor can
sync channel selection).
Also coded a simple optimization for allocating small objects,
based on mempools. It's #ifdef'd out, you can enabled it by
defining OPTIMIZE_SMALL_BLOCKS (e.g. adding -DDOPTIMIZE_SMALL_BLOCKS to
your compiler flags).
We suffer from a great deal of performance loss from the system allocator
(vgroups, ghash, edgehash, the singly-linked list implementation in blenlib,
editmesh, and likely a great many areas I'm forgetting), and this is the
common solution for handling the many-small-objects problem. It's not
really production-ready yet (it's long-term memory consequencers need to
be profiled first, and the implementation tweaked as necassary), but for
people on systems with slow system allocators it's worth trying.
Note that since this creates a guardedalloc<->blenlib link, the build systems
need to be updated accordingly (I've already done this for scons, though I'm
not sure if the player builds).
Some more Bmesh custom data functions and
structures. This still does not do anything
yet because the various conversion functions
don't bother making use of the new custom data
functions. Hooking them up should be fairly
simple though.
Also note that the custom data code is mostly
copy/pasted from the existing custom data
functions for editmode with a few modifications.
Duplicating code like this isn't nice, but I
felt it was better to keep things for Bmesh
'standalone' for the moment and take only what is
immediatly needed instead of creating
a tangle of interdependant code.
Notes:
- edgehash.c still has some weirdo code causing warnings on lines 80 and 117
i.e. if (v1<v0) v0 ^= v1 ^= v0 ^= v1;
- material.c (in pyapi) apparently doesn't seem to be making use of some functions for glossy stuff
Now that new allocator is in place, Custom Data
can be effeciently added to BMesh. The plan is to
make all data not directly related to topology
Custom Data and allow callers to decide precisely
what information a mesh should have in order to
make the best tradeoff between memory usage/speed.
Right now not much to look at, just some structure
definitions and commented out code. More to come
soon...
Added a new pooling allocator for Bmesh based upon
the pool allocator availible in the Boost C++ library
as described here:
http://www.boost.org/doc/libs/1_34_0/libs/pool/doc/concepts.html
Each pool allocates elements of a fixed size, so every
element type in a mesh gets its own pool. For instance
verts occupy a different pool than edges. Each pool
is comprised of multiple arrays of a fixed size and allocating
/freeing elements is simple as removing or adding a head
to a linked list. Since the list of free elements is interleaved
throughout the unused space in the arrays, the overhead
for storing the free list is only 1 pointer total per pool.
This makes building/destroying bmesh structures much faster
and saves quite a bit of memory as well.
Bevel modifier had several problems. These should be fixed now. The bevel
modifier in editmode cannot have 'apply to cage' checked as the modifier
cannot possibly support mapping. Further, custom data preservation has been
turned off temporarily, but will be added back in soon.
Bevel and bmesh code is in need of some cleanup and fixing.
-Fixed potential crasher in BME_JEKV
-Sped up memory usage of BME_MF
-Removed unused structure members
More to come soon....
Fixed the following problems with Bevel code
-meshes with 2 edged faces left over at the end would cause buffer
overrun whens converting from a Bmesh to a Derived Mesh. The
conversion process now checks for both double edges and faces
and removes them when present.
-BME_reverse_loop euler had a bug that was causing the corruption of
radial cycle. This would lead to the bevel tool hanging for a long time
and possibly crashing.
-Added optimization of BME_reverse loop so that it no longer does tiny
allocations but instead uses an area of 'scratch' memory. The same thing
will be done to the Make Face euler soon
-Added proper call to selection flushing for editmode.
-Some miscellaneous cleanups and removal of unneeded debug printfs.
The following is a commit of Levi Schooley's bevel code and
the bmesh library it depends on. The current editmode bevel has
been replaced with a new per edge bevel function. Vertex beveling is
also availible.
To set weights for the modifier to use, use the ctrl-shift-e shortcut on either edges
or vertices.
Recursive beveling is turned of for the time being.
