Blender Git Commits

OpenSubdiv: Refactor, move base C-API file to base folder

OpenSubdiv: Cleanup, use C++ range based loop

Avoid indirection via define.

OpenSubdiv: Cleanup, move utility function to base type conversion

OpenSubdiv: Refactor, move type conversion to base fodler

OpenSubdiv: Refactor, move evaluator to own folder

OpenSubdiv: Completely disable topology verification

Previously it was enabled for debug builds, now it is to be enabled
explicitly.

The reason for this is to reduce overhead when debugging other areas
which might involve subdivision surface. When conversion is to be
debugged set this manually in the code.

OpenSubdiv: Refactor, move edge map to base folder

OpenSubdiv: Refactor creation of topology refiner

Consolidate it inside of the topology refiner implementation class,
which would allow to store extra data acquired during construction
of the OpenSubdiv's object.

OpenSubdiv: Refactor, use C++ allocation for internal classes

Only use OBJECT_GUARDED_{NEW. DELETE} for structures which are part of
public C-API (and hence can not have new/delete operators overloaded).

Could try being brave and override new/delete from under C++ ifdef.

OpenSubdiv: Refactor, move topology refiner factory to topology folder

OpenSubdiv: Refactor, move topology refiner to own folder

In the future factory will also be moved there.

OpenSubdiv: Refactor, move device specific code to own files

Also, move all device files to own folder.

Makes it so checks for device availability are done in a localized
place.

Tests: created a prototype for generating blend objects for modifiers
regression tests

Work in progress, saving.

OpenSubdiv: Reduce memory footprint of cached topology

Brings down worst case of 1.5M faced mesh from 102 MiB to 90 MiB.

OpenSubdiv: Cleanup, remove unused code

There is no need in edge map anymore.

OpenSubdiv: Add TODO avoid checking face-varying topology for equality

OpenSubdiv: Move preliminary geometry counters check to mesh topology

OpenSubdiv: Keep explicit storage of base mesh faces

Allows to perform comparison by doing linear comparison of indices.

Before cyclic match was used to deal with possibly changed winding from
OpenSubdiv side.

Speeds up comparison (and hence improves FPS), makes code more reliable
nut uses more memory.

OpenSubdiv: Compare edge topology

This change makes it so topology refiner comparison will check vertices
of all existing/provided edges.

The initial claim that due to manifold nature of mesh there is no need
in "deep" edges check was wrong: some areas might only provide edges
with non-zero creases. So if crease of one edge goes changes from 1.0
to 0.0 and crease of other edge goes from 0.0 to 1.0 the old comparison
code would not have caught it.

OpenSubdiv: Refactor, move mesh topology comparison to own file

Makes it easier to follow and extend.