Blender Git Loki

Fix for sunbeams operation

Merge remote-tracking branch 'blender-upstream/master' into blender-tiles

Cleaned up some code
- removed unneeded conversion to value buffer, the internal buffer now is a value buffer so no conversion needed.
- removed ifdefs from deficus. the optimalization is not used for several years and no need to develop it any further

uhh.... missed some

Removed the virtual calls.
implemented the bicubic interpolation

Merge remote-tracking branch 'blender-upstream/master' into blender-tiles

Conflicts:
source/blender/compositor/intern/COM_MemoryBuffer.cpp

Merge remote-tracking branch 'blender-upstream/master' into blender-tiles

Merge remote-tracking branch 'blender-upstream/master' into blender-tiles

Fix cycles render layers.

Cycles supports 3 channels and 4 channels colors, compositor only 4 channel.
compositor will use vector to store the 3 channel colors.

Modified NUMBER_OF_CHANNELS

Fixed comments sergey

Merge branch 'master' into blender-tiles

Merge remote-tracking branch 'blender-upstream/master' into blender-tiles

Defocus + VarSizedBokeh

Fix for bokeh blur

Added SAMPLING to the Bokeh blur.

First implementation of the samplers. Refactored the read methods from the buffers to wpecialized classes.
these classes can be optimized locally.

next step: remove the read methods from the buffer. they should al go through the samplers of the buffers

linked history of workpackage to tile

Merge remote-tracking branch 'blender-upstream/master' into blender-tiles

Fix for bokeh blur - missed during migration