use an enum typedef for button types. it was quite annoying debugging UI code since the defines are bit-shifted. GDB would show but->type as 13824 and blender define was (27 << 9).
Now but->type shows as a humanly readable names.
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.
instead of checking if the mouse is over another button to exit the popup.
Just check if the mouse is outside the rect-union between the button and the popup.
This would use proper draw_pbvh for initially calculated PBVH.
Wasn't harmful since this flag used to be updated form update_mesh_elements,
but it's still better to have things consistent all over.
- sample weight didnt work when the object was transformed.
- sample weight didnt work when vertex selection was enabled.
- 'All faces' option is used by weight paint mode, but there was no UI access.
add ED_mesh_pick_face_vert(). which uses the face selection buffer but returns the closest vertex.
Regular rendering now works tiled, and supports save buffers to save memory
during render and cache render results.
Brick texture node by Thomas.
http://wiki.blender.org/index.php/Doc:2.6/Manual/Render/Cycles/Nodes/Textures#Brick_Texture
Image texture Blended Box Mapping.
http://wiki.blender.org/index.php/Doc:2.6/Manual/Render/Cycles/Nodes/Textures#Image_Texturehttp://mango.blender.org/production/blended_box/
Various bug fixes by Sergey and Campbell.
* Fix for reading freed memory in some node setups.
* Fix incorrect memory read when synchronizing mesh motion.
* Fix crash appearing when direct light usage is different on different layers.
* Fix for vector pass gives wrong result in some circumstances.
* Fix for wrong resolution used for rendering Render Layer node.
* Option to cancel rendering when doing initial synchronization.
* No more texture limit when using CPU render.
* Many fixes for new tiled rendering.
Two bugs: first, the point-in-face function had a bug that made it fail for the xz or yz planes.
Second, in ortho mode, simultaneous linehits need careful sorting.
Also, in orth mode it is somewhat random whether the edges exactly behind the front ones are reported 'hit' by bvh tree, so put in code to prevent cuts along the parallel-to-view faces when not in cut-through mode.
