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Age	Commit message (Collapse)	Author
2020-03-13	OpenSubdiv: Make non-full geometry less strict for sharpness	Sergey Sharybin
	Allow to mark individual vertices as infinitely sharp even if there is no full topology and no access to edges: infinite sharp vertices do not need connectivity information.
2020-02-28	OpenSubdiv: Allow less topology callbacks assigned	Sergey Sharybin
	Useful for cases when topology does not need to have any crease or UV layers. Now instead of assigning callbacks which returns zero data is possible to simply assign the callback itself to NULL.
2019-04-17	ClangFormat: apply to source, most of intern	Campbell Barton
	Apply clang format as proposed in T53211. For details on usage and instructions for migrating branches without conflicts, see: https://wiki.blender.org/wiki/Tools/ClangFormat
2019-01-22	Fix T58640: Round corner in edge crease of subdivided surfaces	Sergey Sharybin
	Fix T60502: Creasing behavior on 2.8 seams wrong Was a mistake in a boundary vertices sharpness calculation.
2019-01-16	OpenSubdiv: Remove topology orientation code	Sergey Sharybin
	It is no longer used and has some issues in corner cases which are not handled in a way which OpenSubdiv expects.
2019-01-16	OpenSubdiv: Use own utility header	Sergey Sharybin
	Replaces direct access to std.
2018-10-31	OpenSubdiv: API, expose vertex boundary interpolation option	Sergey Sharybin
	Only affects internal API, bout could be exposed as an option for the compatibility reasons with other software. Is a part of some ongoing development of multires, but might or might not be used.
2018-08-01	Subsurf: Add API to provide vertex sharpness	Sergey Sharybin
	Currently unused, added for the future and API completeness.
2018-08-01	Subsurf: Fix/workaround crashes and failures with non-manifold geometry	Sergey Sharybin
	The idea is simple: do not provide full topology to OpenSubdiv, leave edges creation to OpenSubdiv itself. This solves issues with non-manifold meshes which were known to fail, including the ones from T52059. On a positive side we can simplify our side of converter, keeping code shorter. it is still possible that we'll need to ensure all loops has same winding, but that is less things to worry about.
2018-08-01	Subsurf: Use edge sharpness directly from converter	Sergey Sharybin
	Seems it's behaving correct now, surely more tests needed, but this is required for now to move forward.
2018-08-01	Subsurf: Support subdivision of loose elements	Sergey Sharybin
	Applies to vertices and edges. Biggest annoyance here is that OpenSubdiv's topology converter expects that there is no loose geometry, otherwise it is getting confused. For now solution is to create some sort of mapping from real Mesh vertex and edge index to a non-loose-index. Now the annoying part is that this is an extra step to calculate before we can compare topology, meaning FPS will not be as great as if we knew for sure that topology didn't change. Loose edges subdivision is different from what it used to be with old subdivision code, but probably nice feature now is that endpoints of loose edges are stay at the coarse vertex locations. This allows to have things like plane with hair strands, without need to duplicate edge vertices at endpoints. All this required some re-work of topology refiner creation, which is now only passing edges and vertices which are adjacent to face. This is how topology refiner is supposed to be used, and this is how its validator also works. Vertices which are adjacent to loose edges are marked as infinite sharp. This seems to be good-enough approximation for now. In the future we might tweaks things a bit and push such vertices in average direction of loose edges, to match old subdivision code closer.
2018-07-18	OpenSubdiv: Add API to evaluate face-varying data	Sergey Sharybin
	There are move changes along the line to keep everything working from from C.
2018-07-16	OpenSubdiv: Re-work C-API integration	Sergey Sharybin
	Main goal is to make API simpler to follow (at least ion terms what is defined/declared where, as opposite of handful big headers which includes all the declarations), and also avoid a big set of long and obscure functions. Now C-API files are split into smaller ones, following OpenSubdiv behavior more closely, and also function pointers in structures used a lot more, which shortens functions names, UV integration part in GL Mesh is mainly stripped away, it needs to be done differently. On a related topic, UV coordinates API in converter needs to be removed as well, we do not need coordinates, only island connectivity information there. Additional changes: - Varying interpolation in evaluator API are temporarily disabled, need to extend API somewhere (probably, evaluator's API) to inform layout information of vertex data (whether it contains varying data, width, stride and such). - Evaluator now can interpolate face-varying data. Only works for adaptive refiner, since some issues in OpenSubdiv itself. Planned changes: - Remove uv coordinates from TopologyConverter. - Support evaluation of patches (as opposite to individual coordinates as it happens currently). - Support more flexible layout of varying and face-varying data. It is stupid to assume varying is 3 floats and face-varying 2 floats. - Support of second order derivatives. - Everything else what i'm missing in this list.