Blender Git Loki

New hair editing feature "Shape Cut", for cutting hair based on a mesh
shape instead of a brush tool.

The brush cutting tool for hair, while useful, is not very accurate and
often requires rotating the model constantly to get the right trimming
on every side. This makes adjustments to a hair shape a very tedious
process.

On the other hand, making proxy meshes for hair shapes is a common
workflow. The new operator allows using such rough meshes as boundaries
for hair. All hairs that are outside the shape mesh are removed, while
those cutting it at some length are shortened accordingly.

The operator can be accessed in the particle edit mode toolbar via the
"Shape Cut" button. The "Shape Object" must be set first and stays
selected as a tool setting for repeatedly applying the shape.

SSAO works again. Unfortunately it's unavoidable to have it work without
explicit attenuation control (by using just max distance).

Also it now supports orthographic cameras properly. The maximum distance is
now defined in world space units so it should be slightly easier to understand
and uniform across perspective and orthographic cameras.

The optimizations can be generalized for orthographic cameras but the code is
more complex and the runtime advantage is questionable in that case
(in the end a matrix transform is 4 dot products which are not that terrible)
so commented out the code there for now.

Merge branch 'master' into gooseberry

Conflicts:
source/blender/blenkernel/intern/key.c
source/blender/blenloader/intern/versioning_270.c

Correct normal reconstruction with optimized formula.

This needed some adjustments from the formula I found on the article on
view space reconstruction, since OpenGL makes different assumptions about its
projection matrix.

SSAO does not work yet correctly under new model assumptions but we are going
to substitute with nice horizon based ambient occlusion.

Refactoring of SSAO code. Uses some optimizations but result is different
still test file here to help with debugging.

Merge branch 'master' into viewport_experiments

Normalize the depth to the -1.0 to 1.0 range as well.

Add shader files to the source tree. It helps by displaying them in the
IDE

Merge branch 'master' into viewport_experiments

Merge branch 'master' into terrible_consequencer

Conflicts:
source/blender/editors/space_sequencer/sequencer_edit.c
source/blender/editors/space_sequencer/sequencer_ops.c

Trim tool:

Support metastrips and multiple strips at once.

WIP support for meta trimming

Merge branch 'master' into terrible_consequencer

Hook widget event to the lamp operator.

Hook calling widget to operator event system. Alpha alpha code still.
Transform/lamp still don't process those.

Store the active widget in the context. This allows us to first call the
widget handler if needed.

Arrow handler that does something useful (tm). However still not hooked
up to operators.

Dummy handler for arrows, take care of some allocation issues for
operators.

Add callbacks for operator initialization. Now a widget will directly
call an operator and have its own handlers for input.

No handlers implemented yet.

Classic fix linking of the widget library.