Undo would leave BMEditMesh->me pointer NULL, this would likely crash EDBM_verts_mirror_cache_begin() too.
Rather then restore 'me', remove the pointer altogether and use BMEditMesh->ob->data to save us having to keep track of 2 pointers.
Any identifier that looks like an OpenGL identifier, but isn't, causes a false alarm by the glreport.py tool. Most of these were in comments so I just rephrased the comments. There were a couple of static functions/macros that were easy enough to rename. Only the glTexco and glIndex fields of the DMVertexAttribs struct was public and had non-local uses.
Don't create empty tesselated faces layers in edit derivedmesh, these are
being created on the fly so this will conflicted, and use loop data for
opengl attributes for edit derivedmesh drawing.
old mesh MCol 'r' was blue, 'b' was red, but theres no reason to keep this for bmesh with MLoopCol.
Loading old files works, saving legacy format works too.
What wont work is loading a file after this revision and loading it in an older revision since the bmesh merge.
(it wont crash but the blue and red will be swapped on vertex color layers).
The DMSetDrawOptions[Tex] callbacks return 0 (skip), 1 (draw), or 2
(either stipple or skip mcols.) In the CDDM, EDDM, and CCGDM draw
functions, as well as the callbacks in drawmesh/drawobject, replace
these numbers with values from an enum, DMDrawOptions.
This function pointer's 'setDrawOptions' parameter took a slightly
different type than the other drawing callbacks. In particular, it
could set a 'drawSmooth' value to indicate that smoothing should
always be enabled, overriding the face flag. However, all callbacks
either did not set this value, or set it unconditionally to
1. Replaced this by adding a new 'flag' parameter to drawFacesMapped,
which can be set to DM_DRAW_ALWAYS_SMOOTH where appropriate.
Also removed the 'useColors' parameter and replaced it with another
flag value, DM_DRAW_USE_COLORS.
Removed the 'wpaint__setSolidDrawOptions' callback, was only being
used to set the shading to smooth.
It's currently not respecting the material color, probably since the
BMesh merge. There are a couple problems, both involving "dummy"
variables taking the place of actual MTFace/MCol data.
Code review: http://codereview.appspot.com/5753050/
- spelling - turns out we had tessellation spelt wrong all over.
- use \directive for doxy (not @directive)
- remove BLI_sparsemap.h - was from bmesh merge IIRC but entire file commented and not used.
Looks like it was missed BMesh element index for faces in emDM_drawMappedFacesMat.
There was already call of BM_mesh_elem_index_ensure to ensure there's element
index for vertices, added flag to ensure there's also index for faces.
