Blender Git Loki

Merge branch 'master' into cycles_procedural_api

cleanup, review interface

store deltas in half-floats, implement logic for vertices

Merge branch 'master' into cycles_procedural_api

format

move transfer stats to Device

initial work to support delta compression

Experiment with partial copies to the device.

The idea is to only copy to the device chunks of memory that have been
modified during updates. This does reduce the amount of data being
transfered, but does not give significant speedups.

BVH data and attributes are still not handled here.

do not rebuild the scene if only the attributes need reallocation

fix prefetch cache memory leak

fix missing attributes update when adding or removing attributes

Merge branch 'master' into cycles_procedural_api

Merge branch 'master' into cycles_procedural_api

use a dedicated thread to prefetch data

avoid repacking hair topology and shaders if possible

avoid freeing and reallocating memory on the device if possible

add logic to prefetch frames

format

groundwork for a secondary cache to prefetch to data

frame based cache: load data in the cache when running out of frames