* Add support for sheenColor and sheenRoughness
This work is necessary to support the glTF extension KHR_materials_sheen.
This change effectively adds the specular lobe from the cloth material
model to the base material model. The cloth model remains useful for
its extra subsurface color feature but also because it's cheaper.
* Add support for KHR_materials_sheen to gltfio
* Update documentation
* Document default shading values
This chooses type=THIN, mode=SCREENSPACE, and blending=TRANSPARENT.
Due to sampler overload, we print a friendly error message and enable a
fallback if the user tries to simultaneously enable ubershader mode, the
clearcoat extension, and the transmission extension.
To see proof that this works, use gltf_viewer with -u and examine the
node hierarchy. You will now see the correct material names instead of
the ubershader names.
This is 466 KB insted of the usual 850 KB. It assumes that users do not
need spec-gloss, non-lit, or a special transparency mode.
(uncompressed SO size on arm64)
We can add a new maven project for this next week.
Replace with forward declarations if needed and includes in .cpp that
now need them.
The idea here is to have our headers have the least amount of impact as
possible on our clients (e.g. compilation time).
Inspired by our recent scissor change (#1639) but motivated by gltfio,
which was forced to create a ton of ubershaders (see #1562).
Tested with:
gltf_viewer -u ../glTF-Sample-Models/2.0/TextureSettingsTest/glTF/TextureSettingsTest.gltf
* MaterialInstance now has setMaskThreshold for convenience.
* Materials now support dynamic doubleSided property.
This does not change the format of material packages because they
already have both getDoubleSided() and getDoubleSidedSet().
The only way in which this change could impact existing applications is
that materials that explicity set doubleSided to "false" will now
respect the material's culling mode, rather than forcing it to NONE.
Fixes gltf_viewer with littlest_tokyo in ubershader mode.
Fixes#963.
* JNI for dynamic material properties.
* Add underscore prefix to internal material params.
* Remove un-needed mat info field.
