• converter: Re-sample animations on import instead of assuming one data value per frame (note: CUBICSPLINE is not supported yet)
• converter: Allow non-standard absolute paths in image URIs

• converter: Fix urllib.parse import
• converter: Save space when storing animation data when all frames for a channel have the same value

Converter

• Fix skinned meshes with a transformed root node

Converter

• Fix error when a collision shape's bounding box contains a zero dimension
• Fix loading textures with spaces in the file path

CLI

• Fix paths when copying textures
• Make dst option (use src with .bam extension as the default)
• Remove deprecated --physics-engine flag

Other

• Re-add Python 3.8 support
• gltf.converter and gltf.loader are now explicitly marked private

Converter

• Do a better job combining associated GeomNodes under Characters
• Fix loading textures from cache (fixes #118)

CLI

• Fix paths on Windows

Converter

• Stop using load_prc_file_data() (fixes #109)
• Make GltfSettings a mutable dataclass
• Remove gltf.patch_loader()
• Support KHR_materials_ior, set default refractive index to 1.5
• Make inverseBindMatrices optional on skins (fixes #111)
• Remove convert() function
• Rename GltfSettings.animations to GltfSettings.skip_animations (defaults to False)
• Remove writing_bam/copy_lights hack (we no longer support the older Panda3D versions that required these)
• Stop using model-path to find/load textures (fixes #115)
• Stop writing embedded textures to disk (this was in addition to being embedded in the BAM file)
• Remove outdir and replace indir with filepath/filedir
• Add flatten_nodes option that attempts to flatten the output node hierarchy (fixes #101)
• Handle case where glTF extras is not an object/dict (fixes #112)
• Put morph targets on separate GeomVertexArray (fixes #117)

Loader

• Stop using an intermediate BAM file (fixes #116)
• Load settings from ConfigVars and remove GltfLoader.global_settings

CLI

• Show defaults in help/usage text
• Add --collision-shapes option to replace --physics-engine, which is now deprecated (fixes #100)
• Convert src and dst to absolute paths

Other

• Move load_model() from converter to loader (still available as gltf.load_model())

Converter

• Reparent GeomNodes to physics nodes
• Generate quad CollisionPolygons where possible
• Use correct array type for AnimChannelScalarTable.set_table()
• Allow for byteOffset to be optional in accessor and bufferView
• Set correct contents on transform_weight/_index columns
• Fix import of padded vertex columns
• Support application/gltf-buffer for uri
• Force normalization of joint weights
• Fix morph targets when mesh does not specify default weights
• Fix morph targets when neither weights nor targetNames is given
• Use new Panda3D 1.10.8 M_emission mode
• Make sure texture modes are set for all textures

Converter

• Fix objects without emission texture being invisible with alpha on
• Fix punctual light direction in Y-up scenes (#81)
• Support KHR_texture_transform
• Generate flat normals when no normals are present
• Support spotlight falloff
• Fix emission not working without emissiveTexture in simplepbr

Viewer

• Don't create a PointLight if the model already has a light
• When parenting lights to render, maintain absolute transform

Converter

• Add option to save animations to separate files
  • This is can be accessed via the CLI using --animations separate

Converter

• Disable back-face culling on double-sided materials
  • Note: Blender materials are double-sided by default, so this may break some currently working setups
• Fix black objects when using fix-function pipeline or auto-shader along with PBR materials
• Allow empty scenes without Geoms
• Fix component sizes in mesh data buffers

Converter

• Add texture and material attribs to fallback RenderState
• Add option to convert PBR glTF materials to "legacy" materials
  • This is best effort and data will be lost
  • Exposed in GltfSettings as legacy_materials (defaults to False)
  • Exposed in gltf2bam as --legacy-materials flag

Converter

• Add support for joint/bone parents
• Add support for PANDA3D_physics_collision_shapes extension (includes new intangible setting)
• Fix errors when using double-precision builds of Panda3D
• Fix ZeroDivisionError when loading single-frame animations
• Fix loading meshes with no indices
• Fix loading model tangents on Z-up files
• Fix generating tangents on Z-up files
• Fix the sign on generated bi-tangents

Converter

• Fix error when no top-level extensions object is present
• Fix crash when using Panda3D compiled with double-precision floats
• Add support for emission maps
• Fix direction and lens view vector for directional lights
• Do not assign empty TransformBlendTable if a Geom does not have a transform_blend column

Viewer

• Improved default camera position and view
• Add work-around to make lights from the model work
• Upgrade to panda3d-simplepbr>=0.6 for emission and occlusion map support
• Shortcuts added to toggle various render features:
  • n: toggle normal maps
  • e: toggle emission maps
  • o: toggle occlusion maps
  • a: toggle ambient light

Other

• Add --version flag to CLI
• Use GltfLoader.global_settings if gltf_settings is None for patch_loader()

Viewer

• Toggle wireframe view with w
• Toggle textures with t
• Dump scene graph to standard out with shift-l
• Dump analysis of the scene graph to standard out with shift-a

Converter

• Fix an issue where morph targets would no longer be bound after saving and loading to model cache

Converter

• Add --no-srgb option to skip making sRGB textures (not spec-complaint, but may be useful for some workflows)
• Add options to copy textures
• Add support for morph targets and animations
• Add support for multiple meshes using the same skin
• Add support for skeletons with multiple root bones
• Fix some transformation issues with characters
• Fix color of fallback normal map
• Fix texture stage order (make it deterministic)
• Fix fallback textures not getting saved to BAM files

Many thanks to @el-dee and @rdb who did most of the work for this release!

Converter

• Faster loading of bin files
• Support loading supplied tangents
• Calculate tangents if they are missing
  • NOTE: this is still WIP and not spec-compliant
• Support loading normal maps
• More axis-conversion fixes

Viewer

• The default camera will now look at the loaded model

Viewer

• Move rendering and shaders to a new, separate panda3d-simplepbr
• Updates from panda3d-simplepbr:
  • Better support for OpenGL 2.1 hardware
  • Multi-sample Anti-aliasing

Conversion

• Initial support for KHR_lights_punctual extension
• Fix bad file paths for Python 3.5
• Fix bad file paths for Windows

Viewer

• Do not load models from the model cache
• Support OpenGL 2.1 hardware

Other

• Register glb as a file extension for the Python loader

Fix packaging shader files for gltf-viewer

Initial release