* PBVH can now be created contain both from face grids or standard
meshes. The former is much quicker to build for high res meshes.
* Moved some drawing code into pbvh (mostly for the frustum test).
* Moved ray intersection code into pbvh.
* GPU buffers also can be built from either mesh or grids now.
* Updated sculpt code to work with this. The ugly part is that there
is now a macro for iterating over vertices, to handle both cases,
and some duplicated code for e.g. undo.
* Smooth brush does not work yet with grids.
* Now uses the CCG DerivedMesh also in object mode, used to be edit mode only.
* Create CD_ORIGINDEX layer on demand, to save memory.
* Removed ss_to_cdderivedmesh function, and instead create ccgdm and then
convert that to cddm, to avoid code duplication.
* Added and implement DerivedMesh interface functions to obtain face grids.
* Store edge/face flags more memory efficient.
* Export CCGDerivedMesh struct in BKE_subsurf.h
* Convert all code to use new functions.
* Branch maintainers may want to skip this commit, and run this
conversion script instead, if they use a lot of math functions
in new code:
http://www.pasteall.org/9052/python
* Draw/Inflate/Layer now keep working on the original mesh coordinates and
normals from when the stroke started. This helps avoid the mesh blowing
up, but can still be better. The old behavior is still available as
"Accumulate" in the UI.
* This requires some more memory usage for the BVH, would like to find a
way to avoid that.
* Smooth falloff is now the default.
* Spacing is now enabled by default, with a value of 7.5.
* Anchored now stores normals per node to save some memory.
* Smooth: vert-face map is now only created when this tool is used, would be
best to also avoid using it here to avoid a sudden increase in memory, but
is not trivial.
* Grab: now no longer uses active verts list and loops over nodes like other
tools.
* Layer: uses original coordinates from undo now to save memory when not
using persistent layer.
* Anchored: this option works again now, though is still quite slow as it
loops over all verts/faces.
Smooth, layer tools and the anchored option could still be improved to use
less memory and/or work faster by only doing things per node.
that it is able to store changes in the mesh more compact than global undo.
It doesn't integrate well with multires yet, will tackle that when I start
looking into multires, for now still focusing on sculpt on regular meshes.
The weak point now is the thread-safe atomic access to normals from multiple
threads, did not seem to be a bottleneck in my tests but I don't really trust
it to be fast.
* Sculpting, normal update and bounding box code is now multithreaded
using OpenMP.
* Fix a number of update issues: normals on node boundaries, outdated
bounding boxes, partial redraw, .. . There's probably still a few
left, but should be better now.
* Clicking once now does a single paint instead of two (was also
painting on mouse up event).
* Smooth shading now is enabled for the full mesh when the first face
uses it (so it can be tested at least).
Implementation Notes:
* PBVH search can now be done either using a callback or bt gathering the
nodes in an array. The latter makes multithreading with OpenMP easier.
* Normals update code is now inside PBVH, was doing it per node before but
should do all faces first and only then vertices.
* Instead of using search modes + 1 modified flag, now nodes get 4 flags
to indicate what needs to be updated for them, found that this makes it
easier for me to understand the code and fix update bugs.
* PBVHNode is now exposed as an abstract type, I think this makes it more
clear what is happening than having it's data passed as part of callback
functions.
* Active_verts list was replaced by looping over nodes and the vertices
inside them. However the grab brush still uses the active_verts system,
will fix that later.
* Some micro-optimizations, like avoiding a few multiplications/divisions,
using local variables instead of pointers, or looping over fewer vertices
to update the bounding boxes.
Selecting a material in the node tree sets this as the active material and the buttons view redraws.
Added rna prop material.active_node_material
Currently its not clear what settings are used by the node material and the base material (needs some tedious research) so I made most panels use the node material with the exceptions of volumetrics, physics and halo settings.
We'll probably need to split the panels up to do this properly.
* Screen keymap is now split up in two, some of the area/region
manipulation operators here need to be handled before others.
* Moved paint/sculpt/sketch out of the 3d view keymap, these were
there as a workaround, now with keymap poll no longer needed.
* Also fixes#19297, 3d cursor moves when combing in particle mode.
issues like Shift+R (repeat last) not giving capital R in the text
editor. There is also new modal handler list at the window level,
and the API call will always add it to that one now, since modal
handlers were not used in other levels.
The order used to be:
* window modal + keymap
* area modal + keymap
* region modal + keymap
Now it is:
* window modal
* region keymap
* area keymap
* window keymap
* Changed the non-projection paint code to use the brush falloff curve, rather than a predefined falloff. This makes non-projection painting in the 3d view, and image editor painting much more consistent with other brush usage.
* Converted vertex paint to use the new stroke system. Now supports the same smooth stroke and stroke spacing as sculpt mode.
* Refactored the paint cursor a bit, just sculpt for now but other modes soon.
* A couple warning fixes
* Some initial work on a new paint abstraction, PaintStroke. For now, most of the code just pulls out stroke-related stuff from sculpt mode, next step is to integrate the other paint modes to use this. It'll enable stuff like smooth stroke for all the paint modes with less code duplication.
* Added UI for brush stroke. Contains for now spacing and smooth stroke
* Removed Sculpt UI for airbrush -- doesn't do anything in sculpt mode
* Improved smooth stroke by using float instead of int precision, so smooth stroke is even smoother now
* Added icons to viewport shading enum. On a side note, why do we have an icon called "ICON_POTATO" for texture mode?
* Fixed clay brush at zero-strength bug, was dividing by zero. Still todo is fixing clay brush strength relative to other brushes.
* Added a new Paint type in scene DNA. This is now the base struct for Sculpt.
* The Paint type contains a list of Brushes, you can add or remove these much like material and texture slots.
* Modified the UI for the new Paint type, now shows the list of brushes active for this mode
* Added a New Brush operator, shows in the UI as a list of brush tool types to add
* Made the sculpt tool property UI smaller and not expanded, expectation is that we will have a number of preset brushes that will cover the basic sculpt brush types
TODO:
* Vertex paint, weight paint, texture paint need to be converted to this system next
* Add brush presets to the default blend
* Replaced FACESEL_PAINT_TEST macro with paint_facesel_test. This removes one more thing from BKE_global, and it'll make it easier to localize.
* Fixed sculpt paint cursor sometimes not showing.
