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@github-actions github-actions released this 09 Jan 14:30
· 130 commits to main since this release
v0.2
42a3394

Added

  • CMake config file installation for libguc
  • Custom data for generated mesh attributes
  • Display color estimation from material properties
  • Documentation on Ecosystem Limitations and Structure Mapping
  • Extent computation
  • GitHub Actions builds
  • Omittance of MaterialX multiplication nodes with factor 1
  • Option to export MaterialX glTF PBR as file
  • Sdf file format plugin
  • Support for glTF libraries (no scenes)
  • Test suite with graphical tests
  • Transmission as alpha-as-coverage to UsdPreviewSurfaces
  • UsdModelAPI metadata
  • USDZ export
  • Version information to header, executable and converted assets
  • Workaround for glTF assets referencing the wrong texture channel for alpha

Changed

  • CMake 3.15 is now required
  • MikkTSpace is now linked statically
  • Refined output USD file structure
  • Renamed guc_params struct to guc_options
  • Updated USD version to 22.11
  • Vertex colors are now stored as dedicated primvars (not as displayColors)
  • Vertex opacities are not generated for opaque materials

Fixed

  • Bug with base64 output buffer size estimation
  • Erroneous C11 compiler requirement
  • Fallback tangent generation
  • Flat normals and tangents being attempted to generate for line and point topologies
  • Flat normal generation not unindexing primvars
  • Handling of MaterialX C++ exceptions
  • Inactive scenes being visible
  • Incorrect MaterialX glTF PBR default values
  • Link errors with Boost and TBB (thanks, @ix-dcourtois!)
  • Location of MaterialX and OIIO libraries (thanks, @ix-dcourtois!)
  • MaterialX exception for very small or large float values
  • MaterialX inputs having multiple data source attributes
  • Missing MaterialX vertex color multiplication in case of missing base color texture
  • Mtlx-as-UsdShade error with USD 22.11
  • Multiple compiler warnings
  • Normal map tangent handling
  • Position independent code not being enabled for static library builds
  • Shared library symbols not being exported on Windows (thanks, @ix-dcourtois!)
  • USD MaterialBindingAPI schema not being applied

Notes on prebuilt binaries

Ensure that

  • you have USD v22.11 with the required features built
  • the environment variables are set appropriately
  • the Python version matches

Prebuilt USD binaries can be found here.

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