Files

Philip Rideout b9efd4fbf0 gltfio Android: Fix double free error.

The custom release callback that I provided was in the wrong place; it
was only being used for a path string, not the actual buffer content.
The cgltf API is a bit awkward in this area.

No need to update RELEASE_NOTES because this will be cherry picked to
the RC branch, which is where the bug introduced.

Fixes #5918.

2022-08-15 16:02:31 -07:00

include/gltfio

gltfio: add 'detach' methods to allow ownership transfer

2022-08-09 14:28:15 -07:00

materials

skip clear coat if material.clearCoat is null

2022-08-01 10:22:03 -07:00

src

gltfio Android: Fix double free error.

2022-08-15 16:02:31 -07:00

CMakeLists.txt

WASM: Allow clients to enable pthreads.

2022-08-12 15:43:00 -07:00

README.md

gltfio: Rename all plugin classes to have "provider" suffix.

2022-06-06 16:25:02 -07:00

README.md

Description

gltfio is a loader library that consumes gltf or glb content and produces Filament objects. For usage details, see the docstring for AssetLoader.

gltfio has two plug-in interfaces, TextureProvider and MaterialProvider. Filament ships with several ready-to-go implementations described below.

MaterialProvider creates Filament materials in response to certain glTF requirements.
- UbershaderProvider loads pre-built materials.
- JitShaderProvider builds materials at run time using the filamat library.
TextureProvider creates and populates Filament Texture objects.
- StbProvider uses the STB library to read PNG and JPEG files.
- Ktx2Provider uses the BasisU library to read KTX2 files.

UbershaderProvider

UbershaderProvider is a ready-to-go implementation of the MaterialProvider interface that should be used in applications that need fast startup times. There is no material compilation that occurs at run time, but the shaders might be relatively large and complex.

At load time, the ubershader loader consumes an ubershader archive which is a precompiled set of materials bundled with formal descriptions of the glTF features that they support.

The uberz command line tool consumes a list of .spec and .filamat files and produces a single .uberz file. For details on these two file formats, see the README in libs/uberz.