Blender Git Loki

Renamed BMesh strand functions to replace deprecated particle term 'keys' by 'vertex'.

fix correspondence bug and format code

- fix correspondence bug thanks to Sergey. ID pointers are to be
restored using lib pointer map

- move two function with BKE_ prefix to blender kernel

- format code according to blender coding style

Merge branch 'master' into cycles_bvh

This commit also removes NO_EXTENDED_PRECISION from refactored code, solving
merge conflicts and getting rid of this define in new code.

Do strand and editstrand drawing in the same place, so they are not shown both.

Cycles: Implement Postprocessing callback

This commit finally uses all the work from the earlier commits to implement
the postprocess callback, which triggers a denoising pass on the current
RenderResult.

Note that this does not work on GPUs yet - they can be used for rendering,
but the Device setting has to be switched to CPU rendering before using the
postprocess button.

One other remaining problem is that the Image editor view isn't updated automatically,
you have to switch to another pass/layer and back to see the change.

Also, the feature should eventually be implemeted as a Job to get a progress bar and a
responding UI during denoising.

Cycles: Add denoise-only mode the the Session

This mode just creates the Device, generates tiles and runs the denoising kernel
on each tile.
Compared to the regular mode of operation, a lot is missing: No interactivity, no
scene syncing, no progressive rendering etc. However, these features aren't needed
for the denoise-after-render feature, and so this mode saves a lot of code when
calling it from the bindings.

Internally, it uses one single large buffer to hold the image, instead of a small buffer
per tile. That requires some changes to the TileManager and is also the reason for the
earlier region-of-interest commit.

Cycles: Implement RenderResult -> RenderBuffers import

This commit adds a function that takes an existing RenderResult and copies the passes
to newly created RenderBuffers. That will later be used to copy the rendered image
back for post-processing denoising.

Cycles: Explicitly pass region of interest to RenderBuffers when exporting pixels to Blender

By itself, that change is pretty useless, but it's important for the upcoming denoise-after-render support.

Render API: Fix bugs regarding pass handling when Cycles debugging is enabled

The probem here was that regular passes are stored as (signed) integers.
Therefore, the pass with bit 31 set (the Cycles debug pass) is stored as -1.
On its own, that's fine - however, when that pass type is implicitly cast to uint64_t
in a function call, the compiler apparently first sign-extends it and then reinterprets
it as unsigned, so the result is 0xffffffff80000000 instead of only bit 31.
To get around that issue, the type is now explicitly cast to a unsigned int32 first and
then implicitly extended to uint64_t.

Cycles: Add additional debugging info to the denoiser

Merge branch 'master' into alembic_basic_io

Update CMakeLists.txt for Windows, add default values for building
Alembic in full or lite mode.

Curves: rewrite the code a bit so it works with external files.

- Pad start and end of knots array with dummy knots.
- Duplicate control points in case of a cyclic curve.

There are still a couple of issues (fringe cases) though which should be
documented in the comments.

Early Hi-Z raytrace implementation (not functional yet)

Outline of packing solution computation

Uses placeholder functions for now, implementing the individual parts is next

Curves: Trim operator

Fixed a few bugs on the trim operator

Support for the Strand data structure in the hair editmode.

mesh faces for liquids now enabled

Find and store reference vertex in PConvexHull

Ref vert is the vertex with the highest Y value, lowes y value if winding direction is reversed (ccw)

Also includes minor refactor of a few related functions

Remove PVert* array from PNoFitPolygon

Vertex positions are saved as a separate array, save memory