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glTFast 6.16.1

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@atteneder atteneder released this 26 Feb 17:09
· 2 commits to openupm since this release
com.atteneder.gltfast/6.16.1
faa0bde

Added

  • (Test) Empty Scene test asset.
  • (Import) Support for 16-bit mesh indices reduces memory footprint for meshes with less than 65k vertices per sub-mesh.
    • 16-bit indices are not converted to 32-bit anymore.
    • 8-bit indices ar converted to 16-bit (instead of 32-bit).

Changed

  • GltfImport.Load, GltfImport.InstantiateSceneAsync and their variants now throw an OperationCanceledException when cancelled before completion.
  • Replaced the generic StandardMaterialExport with specializations.
    • LitMaterialExport for Universal Render Pipeline Lit shader material export.
    • BuiltInStandardMaterialExport for Built-in Render Pipeline Standard shader material export.
  • (Performance) Improved performance of mesh indices conversion for draw modes line loop, triangle strips and triangle fan.

Fixed

  • GltfImport.InstantiateSceneAsync properly handles an invalid scene index parameter.
  • GltfImport waits for downloads to complete before attempting disposal during cancellation.
  • Projects depending on an outdated version of [meshoptimizer mesh compression for Unity] may suppress the corresponding compiler error by using the GLTFAST_IGNORE_MESHOPT_OUTDATED_ERROR scripting define symbol.
  • (Shader) Incorrect alpha blending/clipping due to invalid color space conversion on the base color map alpha and vertex color alpha values (affected shader graphs only; fixes #800).
  • (Shader) Built-in render pipeline shaders metallic-roughness and specular-glossiness now factor in vertex color alpha values.
  • (Shader) All built-in render pipeline shaders apply vertex color alpha values linearly.
  • (Shader) Shader graph glTF-pbrSpecularGlossiness does not disregard the Glossiness parameter anymore.
  • (Import) Cases when specular-glossiness material setup would be incomplete at runtime.
  • (Import) Removed remains of incorrectly signed integer indices.
  • (Export) Smoothness value property is exported correctly across more combination of settings for Universal Render Pipeline Lit shader based materials (fixes #795 and 796).
  • (Export) When a Lit/Standard material has a smoothness texture, their smoothness value is baked into the resulting roughness channel (of the ORM map). This preserves the visual appearance, but is a lossy operation if the smoothness value is not 1.0 (fixes #795 and 796).
  • (Export) MetaMaterialExportBuiltIn is used for built-in material export (unless GLTFAST_BUILTIN_SHADER_GRAPH is set).
  • (Import) Solved exception when scenes with no nodes are loaded.
  • (Import) Triangle fan meshes with the center vertex not being the first vertex import correctly now.
  • (Test) Graphics tests are more stable/consistent due to dedicated scene.
  • (Shader) Incorrect normal unpacking when using default normal map on Android (fixes #791 and 802).
  • (Export) Texture scaling not preserved on URP/Lit export (fixes #805).

Deprecated

  • Generic built-in/Universal render pipeline StandardMaterialExport.
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