com.unity.formats.alembic

• Updated libAlembic 1.7.5 -> 1.7.7
• Optimization: AVX-512 support (tangents generation etc.)
• Linux: Updated toolchain and libraries based on VFX Reference Platform (CY2018)
• Bug fixes
  • Alembic playback sometimes delayed by one frame from Timeline (#84)
    • Enbugged at Release 20180205
  • Camera oblique angle was not correct (#85)
  • Avoid crash when .abc has invalid attributes (#88)
  • Fixed compile error on .NET 4.6 Equivalent (#89)
  • Fixed potential memory corruption when FaceSets are present (#93)
    • Enbugged at Release 20180205

Importer

• Bug fixes
  • Fixed wide character path issue on Windows (#82)
  • Avoid crash when .abc has invalid attributes (#81)

Importer

• Added HDF5 archive with szip/gzip compression support
• Added point polygon and line polygon support (#69)
• Added Alembic timesampling import support (#71 )
  • AnimationClips that crresponds Alembic timesamplings will be generated. These AnimationClips have AnimationEvents that corresponds frames in Alembic timesamplings
• Bug fixes
  • Fixed potential crash with point polygon and line polygon (#69)
  • Fixed tangents glitch (#73)

Exporter

• Added Timeline support (Alembic Recorder Track) (#59)
• Added tracking newly created GameObject support (#60)
• Added point polygon and line polygon support (#69)

Common

• Added Linux binary (experimental)

Importer

• Added visibility support (#63)
• Added uv and vertex color interpolation (#57)
• Added component filter in import settings
• Stopped re-creating deleted nodes automatically
  • Also added "Recreate Missing Nodes" button on AlembicStreamPlayer inspector
• Bug fixes
  • Fixed vertex-sharing glitch (#58)
  • Fixed crash with zero scale Xforms (#66)
  • Fixed crash with meshes that have constant points + animated normals / uvs

Exporter

• Added visibility support (#63)
  • Enabling / disabling / deleting GameObjects are recorded as visibility animation

Importer

• Added face set support
  Shading groups in Maya will be imported as submeshes. "Write Face Sets" option must be enabled when exporting .abc from Maya
• Added normals interpolation support
• Added vertex color and additional UV set support
  These are Maya's extension. "Write Color Sets" and "Write UV Sets" options must be enabled when exporting .abc from Maya
• Added async load support
  "Async Load" option in AlembicStreamPlayer (on by default)
• Added motion vector generation support for AlembicPointsRenderer
• Removed some options
  • "Vertex Sharing" was removed. now always enabled
  • "Use 32bit Index" was removed. now always enabled (on Unity 2017.3 or later)

Exporter

• Added exporting submesh, vertex color and additional UV set support

Common

• Updated libAlembic (1.7.4 -> 1.7.5)

• Fixed cloth export issue

• fix: frame count was always 1 when time sampling mode is Acyclic
• fix: some potential crush bugs

This package contains :

• Several bug fixes.
• UI improvements (ie : support for multi-selection edits, better UI controls for time range,..)
• Simplified workflow : abc files don't need to be placed in streamingAssets, just use the asset folder and the importer will automatically copy them to streamingAssets. This also fixes issues where abc files couldn't be renamed or moved around in the asset folder.
• Added a setting to interpolate samples and calculate vertex velocities.
• Added 'turn quad edges' setting to the importer.
• support for 32 bits index buffers.

Refer to the commit messages for more details.

Added auto activation/deactivation of host GO when alembic clip is managed by a timeline track

added auto-activation option when alembic is played through a timeline clip

fixed lag when playing alembic from timeline.

fixed crash with alembic files containing no normals data

• Fixed issue with Shared Vertices vs UV Tile sub-meshes
• Also, default now does NOT generate sub-mesh per UV tile.

same as previous preview release, with added options to not apply UV/Normals/Tangents from file at each sample read: "Vertex extra data is static"

added import options, off by default: "Merge Vertices (experimental)"

when set to true, will share vertices between polygons when possible.
Note that, this an investigation into a potential optimization.
Seeing reductions, in some cases of 3-4x the number of vertices sent to the GPU.
But, merge process is single threaded and injects per un-merged vertex 2 hash table lookup's (overhead).

Only works in MS. Windows!

Will NOT work with prior releases of Unity, only 2017.1.0b3 and later.

Requires Unity 2017.1.0b2

• fix: AlembicPointsRenderer didn't handle transform (https://github.com/unity3d-jp/AlembicImporter/issues/17)

• Refactor folowing Unity 2017.1 beta release
  Timeline enabled with builds of unity 2017.1.0b1 or later.
  Scripted importer enabled with builds of unity 2017.1.0b2 or later.