Issue was caused by couple of circumstances:
- Normal Map node requires tesselated faces to compute tangent space
- All temporary meshes needed for Cycles export were adding to G.main
- Undo pushes would temporary set meshes tessfaces to NULL
- Moving node will cause undo push and tree re-evaluate fr preview
All this leads to threading conflict between preview render and undo
system.
Solved it in way that all temporary meshes are adding to that exact
Main which was passed to Cycles via BlendData. This required couple
of mechanic changes like adding extra parameter to *_add() functions
and adding some *_ex() functions to make it possible RNA adds objects
to Main passed to new() RNA function.
This was tricky to pass Main to RNA function and IMO that's not so
nice to pass main to function, so ended up with such decision:
- Object.to_mesh() will add temp mesh to G.main
- Added Main.meshes.new_from_object() which does the same as to_mesh,
but adds temporary mesh to specified Main.
So now all temporary meshes needed for preview render would be added
to preview_main which does not conflict with undo pushes.
Viewport render shall not be an issue because object sync happens from
main thread in this case.
It could be some issues with final render, but that's not so much
likely to happen, so shall be fine.
Thanks to Brecht for review!
Moved the GPU function gpu_bmesh_face_visible() to BKE_paint and
inverted the test to match equivalent tests for other mesh types:
paint_is_bmesh_face_hidden().
Changed BKE_pbvh_bmesh_node_save_orig() to not save hidden faces into
the triangle array.
Modified the non-use-original branch of pbvh_bmesh_node_raycast() to
skip hidden faces.
Fixes bug #33914:
projects.blender.org/tracker/index.php?func=detail&aid=33914&group_id=9&atid=498
Some operators like curve presets, color sample and some more were using object's
mode to distinguish in which mode user is currently painting. Such approach fails
in cases when there's paint mode active in 3D viewport and Image Editor.
Changed logic here to use some context's state like active space which helps
distinguishing current paint mode more accurate.
Ported all areas which uses paint_get_active() to new paint_get_active_from_context().
There're still some calls to paint_get_active(), but that shouldn't be harmful due
to that places indeed have object's mode as priority when getting paint mode.
=========================
Documentation: http://wiki.blender.org/index.php/User:Psy-Fi/UV_Tools
Major features include:
*16 bit image support in viewport
*Subsurf aware unwrapping
*Smart Stitch(snap/rotate islands, preview, middlepoint/endpoint stitching)
*Seams from islands tool (marks seams and sharp, depending on settings)
*Uv Sculpting(Grab/Pinch/Rotate)
All tools are complete apart from stitching that is considered stable but with an extra edge mode under development(will be in soc-2011-onion-uv-tools).
Normalize, Normalize All, Invert, Clean, and Levels.
Face mask and vertex select/mask are now mutually exclusive options.
Went ahead and allowed vertex selection support and masking for vertex paint.
Weight Paint Vertex Select tweaked to act like edit mode's select and Circle select was added, but clipping is not working properly for either.
Select all was added too, but to the Q key until I look into overriding A's select all bones.
The select vertices checkbox was moved to the header, but it does not force face select mask to turn off yet--and it doesn't have the correct icon.
There will definitely be an update tomorrow to fix the problems with all or most of the issues.
- removed deprecated bitmap arg from IMB_allocImBuf (plugins will need updating).
- mostly tagged UNUSED() since some of these functions look like they may need to have the arguments used later.
- remove brush array for each Paint struct, just use a single brush pointer.
- removed rna function based template filtering.
- filter brushes using a flag on the brush and the pointer poll function.
- set the brushes using a new operator WM_OT_context_set_id().
TODO
- remake startup.blend, currently brush groupings are lost.
- rewrite WM_OT_context_set_id() to use rna introspection.
* The image panels in the image editor and texture buttons
should be more complete now, with working new/open,
refreshes, and using the layout engine.
* Paint panels in image editor are now consistent with the
ones in the 3d view toolbar.
* Curves panel also uses layout engine, and doesn't look
squashed anymore.
* 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
