CHANGELOG.md

Changelog

All notable changes to this package will be documented in this file.

The format is based on Keep a Changelog and this project adheres to Semantic Versioning.

[2.4.0-exp] - 2023-09-08

• fix: improvements to light color and value export
• fix: light import color space
• fix: sanitize alpha cutoff value before writing
• fix: convert light and material color spaces when exporting for animation
• add: allow choice between implicit and explicit queue and surface type control (experimental)

[2.3.1-exp] - 2023-08-26

• fix: restore ShouldExportTransform functionality on latest dev branch

[2.3.0-exp] - 2023-08-26

• fix: removed incorrect smoothness property from PBRGraph
• fix: wrong file extension when extracting textures (was ".mat", now ".asset")
• fix: ensure default glTF sampling settings on loaded textures (in case there is no sampling information in the gltf)
• change: warn when importing legacy KHR_materials_pbrSpecularGlossiness extension
• change: remove obsolete GLTFSceneImporter constructors
• change: adjusted repository structure for modern package formats
• change: removed legacy test files and legacy samples that were used for testing (tests should come back at a later point)
• change: removed legacy folders from repository
• add: gltf filename log output when textures or extensions can't be imported

[2.2.0-exp] - 2023-08-16

• fix: serialize/deserialize ExtTextureTransform for textures in material extensions
• fix: compiler warnings in unity 2023.1
• fix: animation interpolation on import (unwanted smoothing of animation curves)
• fix: blendshapes with sparse accessors on import (results in distorted meshes)
• fix: quantize decoding (wrong data type conversion)
• fix: when exporting baked humanoid animation data with KHR_animation_pointer enabled, additional tracks were created for the already baked animation
• fix: relative paths containing ".." were not resolved correctly when importing in the Editor
• change: add external images to import dependencies (was conflicting with the ktx2 importer)
• change: import non referenced materials and textures (Use GLTFSceneImporter.LoadUnreferencedImagesAndMaterials to enable it) - In editor import: default is true, runtime: false
• change: don't export submeshes with 0 vertices
• change: RoughRefractionFeature (RenderFeature) to support 2023.1
• add: uv channel support for export
• add: textures without names on import get a temp. name (will get removed on export again)
• add: clearcoat support (Normals are still not supported in pbrgraph shader)
• add: log error when trying to load exr textures (not supported)
• add: per texture transforms in pbrgraph (uv, rotation, scale/offset)
• add: stream length check in LoadBufferView, to prevent infinite loop when trying to read more data
• add: new import options in Gltf loading at runtime: Normals, Tangents, SwapUVs (see ImportOptions)
• add: meshOpt import support (requires package: com.unity.meshopt.decompress)

[2.1.2-exp] - 2023-08-03

• fix: export of humanoid animations where both transforms as well as blendshapes are animated

[2.1.1-exp] - 2023-07-31

• fix: export texture transform for metallicRoughness

[2.1.0-exp] - 2023-06-19

• add: draco import support (requires package: com.atteneder.draco)
• add: KTX2 import support (requires package: com.atteneder.ktx)

[2.0.4-exp] - 2023-06-02

• fix: sampled animations need individual GLTFAnimations since sampling another avatar is not transferrable
• fix: switching from URP/Lit or Standard to PBRGraph should set cutoff correctly so it matches the UI / shader expectations (#68)
• fix: conversion with _EMISSION keyword off was still setting emissive values (#86)
• fix: typo in TMPro shader (#83)
• fix: animated property validation was incorrect for 3-component color values and camera properties

[2.0.3-exp] - 2023-05-15

• fix: import path retargeting exception in some cases
• fix: Range shader property type was missing from propery validation
• feat: allow changing GLTFRecorderClip animation output name

[2.0.2-exp] - 2023-05-08

• remove: unnecessary forced texture transform setting
• fix: make sure default animation state is first in clip list on export
• fix: regarget animation clip paths when stripping empty hierarchy nodes
• fix: watch current render pipeline for changes so that we can trigger reimports
• fix: texture_ST properties aren't properly saved since ShaderGraph marks the textures as [NoScaleOffset} (IN-16486)
• fix: ArgumentException when animated property doesnt exist anymore on assigned shader where the PropertyType can not be resolved then

[2.0.1-exp] - 2023-05-05

• add: sorting of animation clips
• change: dont export animation if expected channel count is not met (e.g. Vector2 has only one channel)
• fix: compilation warning
• fix: extracting multiple materials would throw error in serialized object access
• fix: "Calculate Mikktspace" tangents can be NaN in some cases
• internal: remove GradientSkybox shader from tests

[2.0.0-exp.2] - 2023-04-20

• fix: fresh project reimport was breaking ImportPlugin API
• fix: editor import in 2021.x, added ShaderGraph dependency now
• fix: blendshape frame weight was incorrectly calculated on export
• fix: player compilation
• change: bump Unity dependency to 2020.3

[2.0.0-exp] - 2023-04-18

• add: ImportPlugin API with GltfImportPlugin and GltfImportPluginContext for receiving callbacks during import

[1.24.1-pre] - 2023-04-17

• add: option to disable baking of AnimatorState speed value into animationclip
• fix: doublesided import when shader already had that set explicitly to false

[1.24.0-pre.3] - 2023-03-31

• fix: sampling animation rigging wasn't working anymore
• fix: added warning about obsolete code and what to do
• fix: exposed GLTFImporterHelper.TextureImportSettingsAreCorrect and GLTFImporterHelper.FixTextureImportSettings again

[1.24.0-pre.2] - 2023-03-28

• fix: nullref when importing files without animation in the editor

[1.24.0-pre] - 2023-03-27

• feat: allow Mecanim Humanoid import in Editor with Avatar creation
• feat: better structure for glTF importer with tabs
• fix: don't try to generate UV coordinates for non-triangle meshes
• fix: don't attempt to recalculate normals/tangents for non-triangle meshes
• fix: wrap material extraction in StartEditing/StopEditing calls (fixes #81)
• fix: imports that failed on first try (e.g. missing textures, other errors) would keep using the old asset identifier instead of defaulting to the new one
• fix: runtime recording of SkinnedMeshRenderers without blend shapes was failing in some cases (fixes #80)
• fix: disabling Volume from PBRGraph would still use volume values
• fix: imported animation blendshape frame weights were not roundtripping well
• fix: some animations not imported in Mecanim mode
• fix: compilation issues with ShaderGraph package not present

[1.23.1-pre] - 2023-03-15

• fix: ExportMesh not exporting submeshes in some cases
• fix: missing export mesh marker

[1.23.0-pre] - 2023-03-03

• fix: revert other possible modifications when recording animations
• fix: exporting animation curves failed for blendshape animations on missing targets
• fix: better info for which object has missing curves on animation export
• feat: transparent/double-sided materials can now be upgraded from 2020.x to 2021.x+

[1.22.4-pre] - 2023-02-25

• fix: revert prefab modifications when recording humanoid animation from prefab assets to work around AnimationMode limitations
• fix: creation of duplicated keyframe when there is only one keyframe
• change: clarify log for rotation animation export with wrong number of curves

[1.22.3-pre] - 2023-02-09

• fix: specular extension factor roundtrip was incorrect
• fix: MSFT_lods import created the wrong hierarchy and the culling option wasn't working
• fix: edge case in node/mesh imports in extensions that could lead to a stack overflow
• fix: calling GLTFImporterInspector.FixTextureImportSettings could result in an infite loop when called from an AssetPostprocessor

[1.22.2-pre] - 2023-02-04

• fix: set morph target names from mesh extras on import (#70, thanks @emperorofmars)

[1.22.1-pre] - 2023-02-04

• fix: broken texture references prevented files from loading entirely
• fix: .bin file was not properly registered as dependency for the imported .gltf asset
• fix: shader issue with instance ID transfer on 2021.x (#71, thanks @Jerem-35)
• fix: normal map colorspace was wrong on Mac in some cases (#74, thanks @robertlong)
• fix: ORM maps were exported with empty/unneeded alpha channel (#77, thanks @robertlong)

[1.22.0-pre] - 2023-02-01

• feat: expose ExportNode API
• feat: optionally calculate and place bounds markers in GltfRecorder for viewers that don't caclulate bounds from animated skinned meshes properly (experimental)

[1.21.1-pre] - 2023-01-20

• fix: animator being disabled after exporting humanoid animationclip
• fix: ignore MotionT and MotionQ on animator, can't be resolved for KHR_animation, seems to be a magic unity name
• fix: build error by accessing imageContentHash
• change: export HDR textures with zip compression by default

[1.21.0-pre] - 2023-01-14

• feat: allow aborting export when not in Play Mode and meshes are not readable - seems to be a random Unity synchronization context issue
• fix: don't export unsupported light types (e.g. area light has type "rectangle" which is not supported in glTF)
• fix: Export human motion translation
• fix: prevent exporting the same baked humanoid clip for different avatars, needs individual clips since we're baking them (not retargeting at runtime)
• fix: reusing animation clips between objects with different hierarchies caused some targets to be missing, depending on export order
• change: remove warning for KHR_animation_pointer resolving when the unresolved object is a transform, that's part of core

[1.20.3-pre] - 2023-01-13

• fix: wrong texture name in Texture Transform check
• fix: better check if a texture is a normal map and needs the right import settings
• fix: uris with escaped characters didn't correctly import in the editor

[1.20.2-pre] - 2023-01-12

• fix: export of color animations where only one channel is animated
• fix: order of animationcurve properties when exporing animated colors in component where e.g. a user started by animating a single channel first (e.g. alpha) and later added keyframes for other channels

[1.20.1-pre] - 2023-01-10

• fix: issue with exporting shared texture samplers in some cases
• fix: weights on skinned meshes shouldn't be resolved by custom KHR_animation_pointer resolvers as they're part of the core spec
• change: remove logs when caching data
• change: move cache clear button into settings
• add: KHR_materials_clearcoat roundtrip support (no in-editor visualization yet)

[1.20.0-pre] - 2023-01-04

• add: caching of texture bytes on disc for faster export (can be disabled in UnityGLTFSettings)

[1.19.1-pre] - 2023-01-03

• add: AfterPrimitiveExport event

[1.19.0-pre] - 2022-12-14

• add: spritesheet keyframe animation export
• change: print warning when animation pointer cant be resolved and add filtering of objects that cant be resolved before building animation data
• fix: index discrepancy between _exportedMaterials and _root.Materials lead to wrong texture indices being returned in some cases
• fix: don't write and declare IOR when it's at the default value
• fix: importing textures with names resulted in those names not being used (only image names were used)
• fix: importing files without baseMap but using texture transforms for normal or emissive would result in texture transforms not being used

[1.18.5-pre] - 2022-12-02

• fix: default material was missing in build

[1.18.4-pre] - 2022-12-02

• fix: GLTFRecorder didn't properly record with animation pointer off anymore
• fix: unified access to SkinnedMeshRenderer weights on export
• fix: nullrefs in ExportPlan with missing SkinnedMeshRenderer
• feat: allow passing custom settings into GLTFRecorder

[1.18.3-pre] - 2022-11-14

• fix: disabled MeshRenderers and SkinnedMeshRenderers were not exported despite ExportDisabledGameObjects being on
• fix: sample root transform as well in Humanoid export to prevent shifting it around when recording

[1.18.2-pre] - 2022-11-10

• fix: exception thrown when trying to add a material instance id twice

[1.18.1-pre] - 2022-11-09

• fix: ExportMeshes was not exporting new meshes since the internal material check didn't let it through

[1.18.0-pre] - 2022-11-07

• fix: blend shape weight animation wasn't properly exported in some cases
• fix: IOR extension may end up as null when IOR was animated
• fix: rough refracton LOD access is now affected by alpha blending
• feat: HDR render textures can be exported now
• feat: add ExportMesh(Mesh) API as convenience helper
• feat: add material remapping to glTF/GLB importer
• chore: code cleanup for rough refraction and material inspector
• change: animation export code paths have been consolidated, less differences between KHR_animation_pointer and regular export
• change: bumped min Unity version to 2019.4

[1.17.2-pre] - 2022-10-21

• fix: set linear export setting before accessing texture exporter settings for unknown textures

[1.17.1-pre] - 2022-10-19

• fix: glb export now using utf8 (no BOM)
• fix: simplify and fix normals export

[1.17.0-pre] - 2022-10-12

• add: import options for animation loop and re-enable by default for Mecanim
• fix: reimport assets when colorspace changes
• fix: texture map type needs to be passed into UniqueTexture, otherwise textures used for different things don't get exported correctly
• fix: bake smoothness values into roughness map if there's no good conversion
• fix: alpha cutout export on BiRP
• fix: base color warning should only be shown for transparent objects
• fix: improve alpha cutout inspector for 2020.3
• fix: smoothness was inverted / removed even if no smoothness map existed
• change: refactor TextureMapType to contain options for conversion to clean up export and introduce ability to convert smoothness
• change: refactor textureSlots, usage of textureSlot names and how they should be called

[1.16.3-pre] - 2022-10-06

• fix: KHR_animation_pointer bug with re-used animations targeting properties on nodes

[1.16.2-pre] - 2022-09-30

• fix: blend shapes and blend shape animations were not imported (note: sparse accessor import not working yet)
• fix: allow doublesided and transparent import on 2020.3 URP with PBRGraph
• fix: make RegisterPrimitivesWithNode API public, belongs to ExportMesh
• fix: UnlitGraph used wrong texture transform in some cases
• fix: BiRP texture import on legacy shaders in < 2020.3 had flipped texture transforms
• fix: ExporterMaterials compilation issue on 2018.x
• fix: some TMPro materials were exported incorrectly

[1.16.1-pre] - 2022-09-25

• fix: first-time import was failing to find shaders on 2020.x in some cases
• fix: TMPro texture conversion one export was blurry at the bottom of the texture
• fix: transmission/volume mat was incorrectly imported
• fix: transparency was incorrectly imported on 2020.x
• fix: material validation on 2021.x wasn't properly turning transparency on for some imports
• fix: no compilation errors on 2018.4 + 2019.4

[1.16.0-pre] - 2022-09-21

• fix: checking materials for _ST shader properties was failing on specific Unity versions
• fix: AnimationPointerResolver was warning in cases that are allowed / no warning needed
• fix: build compilation issues on 2022+
• fix: default scene name differed from glTFast, which broke switching importers. Both use "Scene" now
• fix: import warnings for metallicRoughness texture swizzling only print when a metallicRoughness texture is actually used
• feat: tangents are recalculated on import now
• feat: TMPro meshes export with baked texture now instead of SDF texture
• feat: added AfterTextureExportDelegate/BeforeTextureExportDelegate and UniqueTexture hash for modifying textures on export
• change: explicit bool option to turn KHR_materials_volume export on and off
• change: removed outdated samples from package
• change: if a mesh in the glTF doesn't specify a name it will import without name now instead of using a default name

[1.15.0-pre] - 2022-09-13

• fix: workaround for ShaderGraph bug on 2021.2+ that breaks defining baseColorTexture_ST manually
• fix: workaround for Unity regression in 2022.1+ where checking material properties returns wrong results in some cases
• feat: allow exporting of Humanoid animation clips (get baked to generic)
• change: texture aniso values >= 1 now result in LinearMipmapLinear filtering to match visual result in Unity better

[1.14-0-pre] - 2022-09-11

• fix: log error instead of exception for missing textures on export
• feat: allow referencing GameObjects for KHR_animation_pointer
• change: animated fields with KHR_animation_pointer now try to find their correct Unity properties instead of the serialized field (m_ prefix disappears)

[1.13.0-pre] - 2022-09-05

• add: preliminary HDR texture export in EXT_texture_exr extension
• fix: Unity Editor module related issues
• fix: wrongly exporting two keyframes for animations with only one keyframe
• fix: children of lights and cameras were inverted

[1.12.2-pre] - 2022-08-29

• fix: KHR_animation_pointer export where member is declared on base type

[1.12.1-pre] - 2022-08-23

• fix: nullref in export of missing mesh

[1.12.0-pre] - 2022-08-23

• fix: emissive color alpha was set to 1 in some roundtrip cases when it should have been 0
• fix: nullref in import when glTF had null textures (against the spec, but other viewers tolerate it)
• fix: unlit double sided was incorrectly imported in BiRP
• fix: PBRGraphUI didn't properly draw infos for SkinnedMeshRenderer
• fix: added safeguards against Shader.Find not working in first imports (fixes #51)
• fix: textures without mipmaps should export closer to intended now
• fix: missing pbrMetallicRoughness property was treated incorrectly
• fix: BeforeSceneExport was missing from gltf+bin exports
• feat: warn in PBRGraphGUI when UV0 isn't present (fixes #52)
• feat: texture channel swizzling on URP/Lit > PBRGraph material conversion in 2022.1+
• feat: expose ExportMesh API using UniquePrimitive array to export arbitrary meshes from extensions (#55, thanks @robertlong)
• feat: GLTFSettings can now be passed into GLTFSceneExporter directly, falls back to project settings if none are provided
• remove: public settings API on GLTFSceneExporter is now gone. Pass in custom settings via ExportOptions if needed.

[1.11.0-pre] - 2022-07-27

• fix: converting PBRGraph and UnlitGraph to each other shouldn't warn
• fix: multiple animators referencing the same clip exported animations incorrectly with KHR_animation_pointer on
• fix: implemented partial animation target removal when some bindings animate missing objects
• change: asset identifier for imported assets is now an explicit option
• change: removed compilation flag to use new asset identifier, use the explicit option instead

[1.10.1-pre] - 2022-07-18

• fix: accessor submesh primtives were incorrectly assigned after internal duplication
• fix: don't add import dependency on shaders, load them by GUID instead
• fix: URI-escaped file names weren't always resolved correctly
• fix: some KHR_animation_pointer export type fixes (vec3 colors vs. vec4 colors)
• feat: add color helpers to PBRGraphGUI
• feat: add UnlitGraph for 2021.2+
• feat: new API, GetPrimitivesForMesh to add extensions to exported meshes (e.g. KHR_materials_variants)

[1.10.0-pre] - 2022-07-06

• fix: PBRGraph assignable again from shader dropdown
• fix: various KHR_animation_pointer fixes to extension usage and property names
• fix: compilation fixes for Unity 2018/2019
• feat: add helper, callbacks and script generator for shader conversion
• change: Importer/Exporter are now multiple partials
• change: change GetAnimationTargetIdFrom[..] to Get[..]Index to clarify what it does

[1.9.0-pre] - 2022-06-22

• fix: properly set BiRP ShaderGraph transparency keywords
• feat: PBRGraph property names now match glTF names directly (breaking change from 1.7.0+)
• feat: PBRGraph now has a custom shader GUI that also validates keywords

[1.8.1-pre] - 2022-06-22

• fixed: same animation used on different objects should result in different pointer values with KHR_animation_pointer used
• fixed: nullref when adding animation data for null object (e.g. unused property clip)
• fixed: too many nodes get overwritten by duplicate animations with animation pointer
• changed: GetAnimationId now takes root transform parameter
• fixed: previously seen KHR_animation_pointer is now added to resolve list (e.g. when using animations on multiple objects and animating component values)

[1.8.0-pre.2] - 2022-06-14

• fixed: OcclusionTexture tiling now defaults to (1,1)
• fixed: build errors on certain platforms

[1.8.0-pre] - 2022-06-10

• fixed: fixed package version, color space changes require minor version bump, not just patch
• fixed: C# version error on 2020.3

[1.7.1-pre.3] - 2022-06-10

• feat: show extensions and textures in importer inspector
• feat: export texture coord (UV0 / UV1) separately for "occlusionTexture" and "everything else", same as three.js
• fixed: editor import of .gltf files with textures now uses those textures directly instead of creating new ones
• fixed: exporting only includes extensions that are actually used or explicitly enabled
• fixed: no more differences in color space between exporting glTF + textures or glb with embedded textures
• fixed: importer properly declares shaders as dependencies, fixes library reimport errors

[1.7.1-pre.2] - 2022-06-08

• fixed: animation clip import in Editor working again

[1.7.1-pre] - 2022-06-07

• feat: sparse accessors import (partial)
• feat: UV rotation import/export (for baseColorTexture only right now)
• fixed: GLTFRecorderComponent error in play mode when only new input system is present
• fixed: animation export with KHR_animation_pointer and reused nodes
• fixed: passing invalid file names to Export could result in wrong buffer paths in JSON

[1.7.0-pre] - 2022-06-01

• feat: experimental support for KHR_animation_pointer
• feat: experimental URP (2020.3+) & BiRP (2021.2+) Shader Graph for export and import, UnityGLTF/PBRGraph
• feat: approximated support for exporting and importing KHR_materials_transmission, KHR_materials_volume, KHR_materials_ior, KHR_materials_iridescence, best used with UnityGLTF/PBRGraph
• feat: renderer features and post effect for rough refraction / transmission (for URP and BiRP)
• fixed: light and camera directions were flipped when animated
• fixed: normal textures were exported with wrong color space in .gltf
• fixed: WebRequestLoader edge case with relative paths
• improved: better heuristic for PBR material export and generally better glTF-related material property export

[1.6.1-pre.3] - 2022-05-10

• feat: allow replacing logger for GLTFSceneExporter with a custom one, allows to reduce number of logs
• feat: added more ProfilerMarkers
• removed: removed submodules from repository to make usage as submodule in other projects easier
• fixed: bad performance in GLTFRecorder when recording lots of animation and/or Blendshape weights
• fixed: some mismatched ProfilerMarker.Begin/End calls
• fixed: less allocations when writing accessors

[1.6.1-pre.2] - 2022-05-06

• feat: allow recording root object in worldspace in GLTFRecorder

[1.6.1-pre] - 2022-05-06

• feat: added experimental support for KHR_animation_pointer in-editor animation export (for select properties), can be turned on in ProjectSettings/UnityGltf
• feat: added scene export as GLB (fixes #22)
• fixed: roundtrip issues with glTFast when alpha testing is used
• fixed: no build errors in Samples anymore
• fixed: allow exporting skinned mesh animations even when the mesh isn't readable (bone animation is then still exported)

[1.6.0-pre] - 2022-04-28

• feat: added WebGL import support (export was already supported)
• feat: added WebGL animation export support
• feat: added onLoadComplete action to GLTFComponent
• feat: added ProfilerMarkers for export
• feat: import support for KHR_materials_emissive_strength
• changed: replaced FileLoader/WebRequestLoader with simpler UnityWebRequestLoader for better platform support. Use the previous ones if you need streaming.
• removed: removed unused shader variants from BiRP shaders
• fixed: sparse accessor JSON is properly parsed (no sparse accessor import support yet though)
• fixed: no more validation errors regarding minMag filters, bufferView.byteStride for animation samplers, bufferView.target for index/vertex data
• fixed: only export KHR_materials_emissive_strength if emissive intensity > 1
• fixed: URP roundtrip now works with glTFast imports (#42)
• fixed: better handling of filenames for glTF + bin + textures export (#41, #40)
• fixed: add vertex color alpha support, add _EmissionMap_ST support to BiRP shader
• fixed: exporting Prefab assets directly from Project Window wasn't working properly when ExportDisabled was off
• fixed: regression with serialization and roundtrip behaviour of spotlights

[1.5.0-pre.2] - 2022-04-20

• fixed: incorrect UV offset for tiled textures on export in some cases
• feat: show exported glTF/GLB in explorer after exporting via Menu Item
• feat: expose API for GetAnimationId for custom export logic

[1.5.0-pre] - 2022-04-08

• added: dialogue window will ask when meshes are not readable at runtime in the editor
• added: more samples regarding custom material extension export
• changed: more GltfSceneExporter methods are now public to allow for custom extension exporting
• changed: moving back to proper versioning; big jump from 1.0 to 1.5 to show that lots of changes have happened
• fixed: no more ScriptedImporter collisions between UnityGltf, glTFast and Siccity glTF
• fixed: corrected some export callback orders
• fixed: random hangs when importing .gltf files via ScriptedImporter
• fixed: correctly importing wrapModeS and wrapModeT now
• fixed: correctly importing Mask mode and cutoff now

[1.0.4-preview.35] - 2022-03-11

• added better logs for unsupported animation tracks on export
• added public methods in GLTFSceneExporter to allow for custom animation export
• added first batch of samples for custom extensions export
• fixed: Auto Referenced is back on on AsmDefs to keep legacy behaviour
• fixed: first timeline keyframe was exported incorrectly in some cases
• fixed: skins should be exported even when animation export is off
• fixed: animation clips shouldn't be exported when exporting from Timeline recorder
• fixed: MetallicGlossMap scale was incorrectly exported in some cases

[1.0.4-preview.34] - 2022-02-23

• added Accessor reuse between exported animations when they come from the same AnimationClip/speed pair
• added optional project setting to export animation clips with unique names (lots of viewers don't support that)
• fixed animation clips being merged when the same clip was used in multiple Animators

[1.0.4-preview.33] - 2022-02-21

• added export option to merge animator states with identical names into one animation
• fixed export of multiple animations when they had the same name (was implicitly merged before, now explicit)
• fixed export of multiple animations when they had the same animator state name but different speeds

[1.0.4-preview.32] - 2022-02-10

• fixed compilation issues on older Unity versions
• fixed exporting in memory to GLB byte array
• fixed dependency to Timeline and some modules not being clear / not guarded
• fixed Readme containing outdated install instructions
• fixed compiler errors when building to some platforms

[1.0.4-preview.31] - 2022-02-08

• added ability to record and export blend shapes at runtime
• fixed settings not being loaded from Resources correctly at runtime
• fixed another case of duplicate recorded keyframes

[1.0.4-preview.30] - 2022-02-08

• added start events to recorder, made key methods virtual
• fixed GLTF recorder component global shortcuts; now uses regular keycode during play mode

[1.0.4-preview.29] - 2022-02-07

• added GLTFRecorderComponent to record at runtime
• renamed recorder files to follow existing filenames
• fixed compilation warning in GLTFSceneImporter
• fixed: create export directory if it doesn't exist
• fixed: blendshape export was missing flag to export no blendshapes at all
• fixed: in some cases would attempt to record duplicate timestamps which is not allowed
• fixed build error from GLTFSceneExporter

[1.0.4-preview.28] - 2022-02-07

• added glTF Timeline exporter track that allows for both editor and runtime animation export
• added ability to export RenderTextures instead of erroring out, these can be exported for a while now
• added export callbacks and made an initial set of export methods public to enable custom export extensions (similar to three.js export callbacks)
• added export generator name
• fixed URP/Unlit color not being exported
• fixed light intensity values being incorrect depending on Unity settings
• fixed removeEmptyRootObjects on import not actually removing empty root objects
• fixed warning when exporting texture transforms if _MainTex_ST is present but _MainTex isn't
• fixed non-specific textures using the wrong export type in some cases, asking the AssetImporter now if one exists
• changed menu items, export options are now in "Assets/UnityGltf/" instead of a toplevel "GLTF" menu

[1.0.4-preview.27] - 2021-12-02

• fixed _scaleFactor not being applied to child transform positions for editor import
• fixed roundtrip issues when exporting models that have been imported by UnityGLTF or glTFast
• fixed metallicGlossMap being in the wrong color space on export if emission texture was also used
• fixed light/occlusion map being in the wrong color space during roundtrip

[1.0.4-preview.26] - 2021-11-16

• fixed objects with EditorOnly tag being exported, are skipped now

[1.0.4-preview.25] - 2021-11-12

• fixed imported object names potentially not being unique
• fixed normal map export format when build target is Android
• fixed export of animations when multiple exported objects share the same animation name (gets merged on export now)
• moved GLTF serialization from DLL to package to improve platform support (Unity will compile this for all platforms, no need for special DLLs)
• added sparse accessor export for blendshape positions/normals
• added ability to generate secondary UVs in UnityGLTF importer
• added warning when trying to use KTX2 textures which is currently not supported

[1.0.4-preview.24] - 2021-06-14

• fix: don't attempt to export blendshape normals/tangents when mesh doesn't have them
• fix: warn and skip null bones in SkinnedMeshRenderer export
• added: settings for determining texture export type (png/jpeg depending on alpha channel) and JPEG quality
• added: setting to determine if vertex colors should be exported

[1.0.4-preview.23] - 2021-05-28

• fixed animation export from legacy Animation component
• fixed exporting blendshapes for meshes that don't have bones
• fixed empty textures being generated on import
• fixed emission keyword missing on material import when only color but no texture was set
• fixed metallic and fade export not being correct in some cases
• added option to select which properties (normals/tangents) to export with blendshapes

[1.0.4-preview.22] - 2021-05-04

• fixed ScriptedImporter not importing meshes from SkinnedMeshRenderers
• fixed ScriptedImporter not importing AnimationClips
• fixed ScriptedImporter changing material names on import
• fixed blend shape data being exported multiple times when meshes have multiple submeshes
• added blendshape animation export

[1.0.4-preview.21] - 2021-04-26

• fixed settings file directory not being created on settings file creation

[1.0.4-preview.20] - 2021-04-24

• added settings provider to change GLTF settings from Project Settings/UnityGLTF
• added settings for control over object export based on visibility (Camera.cullingMask) and active state (GameObject.activeInHierarchy)
• changed: experimental texture-from-disk export is now disabled by default
• fixed exporting GameObjects with names that contain invalid filename characters
• fixed normal sampling in built-in pipeline which most likely was never correct with scaled normals
• fixed texture sampling for export/import that resulted in incorrect Point sampling in some cases
• fixed some issues with exporting skinned mesh renderers
• fixed regression with multi material/submesh export

[1.0.4-preview.18] - 2021-04-16

• CHANGED: package name is now back to org.khronos.unitygltf
• fixed missing mesh logging an error, is now a warning
• fixed property export order for URP shaders that also have built-in property fallbacks
• fixed export path omitting extensions for cases such as 15-1.0.3.glb
• fixed issue with shared meshes that have different materials not being properly exported (prefrontalcortex#15)
• added MenuItem validation methods to disable them if no valid object for export is selected
• added ability to export selected Prefabs from the Project window directly
• changed the GLTFImporter to overrideExt for 2020.1+ so that importer for .glb files can be chosen when multiple are present

[1.0.4-preview.17] - 2021-03-23

• fixed ACCESSOR_INDEX_PRIMITIVE_RESTART for meshes that have exactly 256 or 65536 vertices and used the wrong buffer type
• fixed vertex color import color space and alpha usage
• fixed incorrect keyframe values causing import abort, just warns now
• fixed GLB/GLTF export paths sometimes being incorrect (double or no extension)
• changed: GLB importer now embeds all meshes and textures as sub assets instead of putting them in the project; needs better importer inspector to allow for asset remapping.

[1.0.4-preview.16] - 2021-03-15

• fixed color space issues with vertex colors and emissive
• fixed export of UV offset/tiling for non-main textures
• fixed exporting materials as PBR when they have _Metallic and _Glossiness (required only _MetallicGlossMap before)

[1.0.4-preview.15] - 2021-02-23

• fixed issues with material export in URP where PBR wasn't properly detected and exported

[1.0.4-preview.14] - 2021-02-10

• fixed issues with KHR_materials_pbrSpecularGlossinessExtension and materials that don't have textures

[1.0.4-preview.13] - 2021-01-30

• fixed missing references in materials and prefabs
• fixed issue preventing build with UnityGLTF in project
• moved samples into subfolder
• added support for animation clip speed being set inside Animator States

[1.0.4-preview.12] - 2020-12-15

• fix compilation errors in GLTFSerialization.dll on recompiling
• fix Newtonsoft.Json being copied to output directory
• fix a number of animation export issues
• add KHR_materials_unlit extension import and export

[1.0.4-preview.11] - 2020-11-27

• fix KHR_lights_punctual extension always being set, even if no lights were exported
• fix invalid primitives being exported for meshes with 0 vertices
• removed export rotation offset that caused incorrect rotation in other softwares

[1.0.4-preview.10] - 2020-11-16

• fix error thrown when vertex arrays have 0 elements (this is valid in FBX)
• add light export/import extensions
• merged a number of PRs that fix nullrefs on export/import

[1.0.4-preview.9] - 2020-10-03

• merged in a number of material fix and null ref PRs
• add namespaces to scripts that didn't have them

[1.0.4-preview.8] - 2020-09-10

• built GLTFSerialization.dll against Newtonsoft.JSON 12.0.3
• removed Newtonsoft.JSON.dll from package
• added dependency on com.unity.nuget.newtonsoft-json@2.0.0
• added 2020.2 compatibility

[1.0.4-preview.7] - 2020-07-24

• fix sRGB/linear conversion for normal maps depending on Unity color space

[1.0.4-preview.6] - 2020-07-15

• fix sRGB/linear conversion for colors exported from Unity
• fix rotation order for 180° hack
• note: please use Linear color space, normal maps break in Gamma color space right now

[1.0.4-preview.5] - 2020-07-13

• hack: added 180° rotation on export (experimental), needs to be tested with animations, only works with a single root transform on export
• changed back to "preview" instead of "pfc" tag because stupid PackMan

[1.0.4-pfc.4] - 2020-07-12

• fix meta files for Tests folder

[1.0.4-pfc.2] - 2020-07-07

• fix build errors preventing builds
• fix PBR texture roundtrip with incorrect red channel

[1.0.4-pfc] - 2020-04-24

• lots of improvements to animation export
• automatic keyframe reduction
• BREAKING: disabled UV2 and vertex color export for web
• fixed texture export from memory instead of from disk
• fix breaking animations in SceneViewer due to omitted LINEAR sampler specification

[1.0.0-pfc.4] - 2020-01-16

• rebased all pfc feature branches on latest master
• back to org.khronos scope for easier switching between versions
• added animation export
• added PNG/JPG texture export from disk where available

[1.0.1] - 2019-04-03

• Upgraded to 2017.4
• Included various fixes (will update)
• Includes UPM package

[1.0.0] - 2018-09-21

• first built unity package release of UnityGLTF