Blender Git Loki

Fixing some crashes with the level of detail system with the default blendfile.

Fixing a crash that occurred when switching to a level of detail with no object specified.

Material level of detail is now working. Material levels of detail appear in all editing modes (sculpt, edit, etc).

When getting the mesh source object, levels that are not enabled for mesh LoD as well as non-mesh objects are now ignored, and the next appropriate LoD object is found.

Correcting a logic error that caused some levels of details to be skipped when increasing detail.

Basic mesh level of detail is now working in the viewport. It should only display levels of detail if you are in object mode, or the object is not the currently active object.

Levels of detail are now properly saved and loaded.

Adding a do_version for the base LoD level on objects.

Adding code to detect when an LoD switch is needed in the viewport. It currently just prints to the console. This print will be replaced with actual switching code in the near future.

Fix 2d masking for pressure masking, also change pressure cutoff so that
high luminance areas show up first when pressure increases.

Better exposing of accumulation option according to brush settings.

Change masking of 2d painting to be similar to 3d masking.

This fixes inconsistent behaviour where opacity masking is done using
only the curve and alpha offset when view mask mapping is used in 2d
painting. The key notion here is that masking converges to the maximum
value, which should be texmask*brush_alpha here. This happens already
for projective texturing.

Unfortunately this requires an extra allocation of a maximum mask value
imbuf during a stroke which introduces some performance regression when
using mask inages. This first version of the fix does not yet introduce
partial update of this maximum mask buffer like we do for colour image
buffers, and even though this bug exists in trunk as well, I decided to
only commit in this branch because it is not too obvious and because
there is some performance regression when using mask brushes.

Also, this commit may break pressure masking because I don't have a
tablet right now to test. Don't panic if this breaks it, I will fix it
when I get my hands on it again. However if this is not the case, this
commit should also fix the 2d behaviour of ramp style pressure masking.

Merge trunk -r57697 into soc-2013-paint

Merge trunk -r 57692 into soc-2013-paint

Yet another fix for mask pressure:

Tiled colour texture could activate partial update, make sure to test
separately for mask pressure options and always disable if they are
active.

svn merge -r57524:57642 ^/trunk/blender

rigidbody: Avoid unnecessary reallocations when creating mesh shapes

rigidbody: Add debug drawing

This is very much a hack (crashes with big scenes), and will be removed
or at least rewritten in the future.
Use debug value 616 to enable.

Yet another small fix for 2d painting with mask pressure: Make sure the
brush texture is recreated always in that case (possibly should check
the actual brush pressure but it will make little difference).

Applying patch by Fredrik Hansson: Extra blend modes.

Actually should be called the blend mode imperialism commit, this commit
adds no more no less about 15 new blend modes.

The catch is that the float versions will probably have to work in
display colour spaces, but seeing how the rest of the blending code is I
think this can go in right now.

Thanks to Fredrik for the original patch and to Campbell for writing
uncrustify. A solid weapon in the war against the non-blender-style-

To painters out there: Test this extensively!