glTFast 6.3.0

Added

• Runtime import tests.
• Runtime export tests.
• (Export) Added development-time checks for valid JSON string literals.
• Added Apple Privacy Manifest file to /Plugins directory.

Changed

• Refactored test scripts folder layout.
• (Export) Normal maps are exported in PNG format by default.
• (Export) HDRP area lights are still exported as spot-lights, but their intensity is taken from Light.intensity (still incorrect, but more consistent).
• Switched from asset-path-based to GUID-based shader loading (in the Editor 2021 and newer) in order to allow for a flexible folder layout without risking breaks/regressions should the layout change in the future.
• Avoid expensive UnityEngine.Object null check when accessing cached default shaders.

Fixed

• Exception when required glTF shader is not included.
• Compiler errors when safe mode (GLTFAST_SAFE scripting define) is enabled.
• Compiler error with High Definition Render Pipeline version 17 (2023.3)
• Removed usage of obsolete APIs in High Definition Render Pipeline version 17 (2023.3)
• (Export) Area light's range value is exported accurately (as shown in the inspector).
• Various occasions of NullReferenceException when no logger is used/provided.
• Proper error handling when trying to load unsupported sparse texture coordinates.
• Ensure that special chars in string values don't lead to invalid JSON.
• Using invariant culture ToLower/ToUpper variants on all non-language-specific data.
• Added missing GetHashCode implementation (removes compiler warning).
• Compiler errors and warnings on newer HDRP versions (16.x/17.x)
• URP clearcoat shader loading at runtime.
• HDRP stack-lit shader loading at runtime.

glTFast 6.2.0

Added

• Deprecated soft-dependency packages are detected and a warning with upgrade instructions is shown in the console.

Changed

• Support for Draco 3D Data Compression is now provided by Draco for Unity (com.unity.cloud.draco), which is a fork of and replaces DracoUnity (com.atteneder.draco).

Fixed

• Compiler error when Newtonsoft JSON package was not installed.
• All Draco vertex attributes are assigned by identifier instead of type. As a result, tangents are now decoded properly instead of recalculated.
• Compilation error when scripting define GLTFAST_BUILTIN_SHADER_GRAPH is set.
• GltfImport.IsTextureYFlipped returns correct result for non-KTX textures.

glTFast 6.1.0

Added

• (Documentation) Explanation and user case for the add-on API
• GltfImport.IsTextureYFlipped to support non-default texture orientations

Changed

• Documentation improvements
• Auto-formatted all markdown, USS, UXML and shader code
• CI maintenance

Fixed

• Updated references to KTX for Unity

glTFast 6.0.1

Fixed

• Compilation error when Animation module is disabled and Newtonsoft JSON package installed.

glTFast 6.0.0

Added

• Custom Add-On API (GLTFast.Addons namespace)
• Support for alternative JSON parsing via Newtonsoft JSON
• Accessor.ElementByteSize: Byte size of one element of that accessor
• Accessor.ByteSize: Overall byte size
• IGltfReadable.GetAccessor: Generic byte-array view into an accessor
• GameObjectInstantiator events that allow further instantiation customizations
  • NodeCreated
  • MeshAdded
  • EndSceneCompleted
• Value array JSON parsing tests
• String/enum conversions tests
• (Import) Clearcoat material support in HDRP and URP (via KHR_materials_clearcoat extension)
• (Export) Clearcoat material export support for HDRP Lit shader

Changed

• Bumped minimum Unity version to 2020.3.48f1
• Renamed GltfAnimation to Animation for consistent naming.
• Bumped Burst dependency version to 1.8.4
• Bumped Mathematics dependency version to 1.3.1

Fixed

• Added Obsolete attribute to public schema class fields that are for serialization only and should not get modified directly.
• More robust parsing of (invalid) enum values

glTFast 5.2.0

Added

• Runtime tests
• (Export) Setting for deterministic export (limits concurrency to ensure consistent output)
• (DOTS) Support for Entities 1.0

Changed

• Optimized Accessor.GetAccessorAttributeType
• Optimized GltfEntityAsset.ClearScenes via Burst
• Bump minimum unity version from 2019.4.7f1 to 2019.4.40f1

Fixed

• Compiler errors and warnings on Unity 2023.2 (and newer) due to using obsolete types.

glTFast 5.1.0

Added

• (Export) Support for Draco mesh compressed exports

Changed

• Added proper root namespace to all assembly definitions
• License and copyright notices

glTFast 5.0.4

Changed

• (Export) Texture coordinates are now flipped vertically, similar to how it's performed at import. This ensures round-trip consistency (#342).

Fixed

• (Export) Invalid blend indices or blend weights are not exported anymore (as skinning is not supported yet; #556)
• Compiler error when using .NET Framework on 2021.3 and newer (#550)
• GltfBoundsAsset's instantiation settings are applied now
• GltfBoundsAsset's BoxCollider is positioned correctly, even if GameObject is not at scene origin (#565)

glTFast 5.0.0

This release contains multiple breaking changes. Please read the upgrade guide for details.

Added

• settings parameter to GameObjectBoundsInstantiator's constructor
• (Import) Support for lights via KHR_lights_punctual extension (#17)
• (Import) Exclude/include certain features (e.g. camera, animation, lights) via InstantiationSettings.Mask (of type ComponentType)
• DOTS instantiation settings support
• (Import) Additional load methods in GltfImport (#409)
  • Load override to load from a byte[]
  • LoadFile to load from local files
  • LoadGltfJson to load a glTF JSON from string
• (Import) SceneObjectCreation instantiation setting. It controls whether/when a GameObject/Entity should be created for the scene. Options: Always, Never, WhenSingleRootNode. (#320)
• (Import) Design-time import inspector now offers many more settings (feature parity with run-time settings)
• Extended access to IGltfReadable
  • GetSourceRoot
  • GetSourceNode
  • GetBindPoses
• GltfAsset component got new properties for code-less setup
  • Import Settings
  • Instantiation Settings
• Warning when trying to load the main scene if it is not defined (Editor and development builds only; #450)
• (Export) Support for camera export
• (Export) Support for lights export
• glTF icon assigned to imported glTF assets, GltfAsset* components and and various setting classes
• (Import) Support for up to 8 UV sets (note: glTF shaders still support only two sets; part of #206)
• IMaterialGenerator was extended with support for points topology
• (Export) GameObjectExportSettings.DisabledComponents to explicitely enable export of disabled components (e.g. MeshRenderer, Camera, or Light)
• (Export) ExportSettings.ComponentMask to include or exclude components from export based on type
• (Export) GameObjectExportSettings.LayerMask to include or exclude GameObjects from export based on their layer
• (Import) Async instantiation methods. This helps to ensure a stable frame rate when loading bigger glTF scenes (#205)
• GltfGlobals is public now
• GameObjectInstantiator.SceneTransform is public now

Changed

• The API was changed considerably to conform closer to Unity's coding standard and the Microsoft's Framework Design Guidelines. Some notable items:
  • PascalCase on properties
  • Removed direct access to fields
  • More consistent naming of assemblies, namespaces, classes, constants, static members, etc.
  • Removed majority of Rider code analysis warnings and suggestions
• Converted a lot of unintentionally public classes, types and properties to internal ones
• Replaced CollectingLogger.item with .Count and .Items iterator
• Moved logging related code into GLTFast.Logging namespace
• Renamed Schema.RootChild to Schema.NamedObject and made it abstract
• Converted GameObjectInstantiator.Settings to InstantiationSettings
• Removed RenderPipelineUtils.DetectRenderPipeline in favor of RenderPipelineUtils.RenderPipeline
• Additional methods/properties (e.g. from class GameObjectInstantiator) are virtual, so they can be overriden
• GltfImport implements IDisposable now (#194)
• Support for PNG/Jpeg textures (via built-in packages Unity Web Request Texture and Image Conversion) is now optional (#321)
• Root entity created by GltfEntityAsset will inherit its GameObject's name, position, rotation and scale (at instantiation time)
• Removed GltfImport.GetAccessor from public API (to be replace by a better API; see #426 for details)
• Converted emissiveFactor shader property from low to high dynamic range (HDR) and removed the now obsolete emissiveIntensity shader property (float)
• Shader keyword _UV_ROTATION was replaced by _TEXTURE_TRANSFORM, which now controls tiling, offset and rotation all together
• Animation is not played by default anymore (check the upgrade guide on how to restore this behavior; #339)
• (Import) Deprecated existing, sync instantiation methods in favor of new async ones
• KTX textures load much smoother thanks to bumping KtxUnity to 1.3.0 or 2.2.1
• Sped up loading of external KTX textures by avoid making a redundant memory copy.
• IDownload does not derive from IEnumertor anymore
• (Import) Successfully tested mesh primitive draw mode lines and removed error message about it being untested
• (Export) Disabled components (e.g. MeshRenderer, Camera, or Light) are not exported by default (see also: new GameObjectExportSettings.DisabledComponents setting to get old behavior)
• (Export) GameObjects with tag EditorOnly (including children) don't get exported (similar to building a scene)
• Added optional CancellationToken parameter to async import/export methods. This is preparation work for proper cancellation. Does not work as expected just yet.
• Refactored Assembly Definitions
  • glTFastSchema was merged into glTFast and thus removed
  • glTFastEditor was renamed to glTFast.Editor
  • glTFastEditorTests was renamed to glTFast.Editor.Tests
• GltfAsset.FullUrl is public now (convenient for some tests)
• IInstantiator changes
  • IInstantiator.BeginScene signature dropped third parameter AnimationClip[] animationClips that was depending on built-in Animation module to be enabled.
  • IInstantiator.AddAnimation was added. Only available when built-in Animation module is enabled.
• Converted properties that were hiding conversion logic or caching into methods
  • Accessor: typeEnum to GetAttributeType/SetAttributeType
  • BufferView: modeEnum to GetMode
  • BufferView: filterEnum to GetFilter
  • AnimationChannelTarget: pathEnum to GetPath
  • AnimationSampler: interpolationEnum to GetInterpolationType
  • Camera: typeEnum to GetCameraType/SetCameraType
  • LightPunctual: typeEnum to GetLightType/SetLightType
  • Material: alphaModeEnum to GetAlphaMode/SetAlphaMode
• Moved some nested classes into dedicated files and up the namespace hierarchy
  • GameObjectInstantiator.SceneInstance is now GameObjectSceneInstance
  • ImportSettings.NameImportMethod is now NameImportMethod
  • InstantiationSettings.SceneObjectCreation is now SceneObjectCreation
• HttpHeader's properties are readonly now. A constructor was added as compensation.

Removed

• Obsolete code
  • GltfImport.Destroy (was renamed to GltfImport.Dispose)
  • GLTFast.GltFast (was renamed to GltfImport)
  • GltfImport.InstantiateGltf (was replaced by InstantiateMainScene and InstantiateScene)
  • Remains of Basis Universal extension draft state
    • Schema.Image.extensions
    • Schema.Image.ImageExtension
    • Schema.Image.ImageKtx2

Fixed

• Shader graphs' BaseColor, BaseColorTexture and vertex color calculations are now in correct color space
• Export MeshRenderer where number of materials does not match number of submeshes (thanks @DanDovi for #428)
• Shaders and shader graphs now have a proper main color and main texture assigned (except legacy shader graphs where this is not supported)
• No more redundant default (fallback) materials are being generated
• (JSON parsing) Potential NPDR when just one of many node extensions is present (#464)
• (Import) Draco meshes are correctly named (#527)
• (Import) Gracefully fallback to loading textures from byte arrays if UnityWebRequestTexture module is not enabled and trigger a warning.
• (Import) GltfBoundsAsset.Load properly passes on the logger now.
• (Import) Exception upon loading a file that uses the KHR_animation_pointer extension.

glTFast 4.9.1

Changed

• (Import) An Animator component is added to the scene root GameObject when Mecanim is used as animation method (thanks @hybridherbst for #519). This is convenient at design-time and a preparation for Playable API support.
• (Import) Frame rate improvement when using Draco compression (thanks @hybridherbst for #520).