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diff --git a/doc/resources.md b/doc/resources.md
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+++ b/doc/resources.md
@@ -51,6 +51,7 @@ white except normals are zero.
| `g_double_sided` | | |
| `va_position` | `Res<[Vec3]>` | |
| `va_normal` | `Res<[Vec3]>` | |
+| `va_tangent` | `Res<[Vec3]>` | |
| `va_texcoord` | `Res<[Vec2]>` | |
| `va_roughness` | `Res<[Float]>` | |
| `va_metallic` | `Res<[Float]>` | |
@@ -67,6 +68,7 @@ white except normals are zero.
| `tex_emission` | `Res<Texture>` | Use color channels |
| `tex_thickness` | `Res<Texture>` | Use green channel |
| `tex_occlusion` | `Res<Texture>` | Use red channel |
+| `hint_mirror` | | |
- **Attenuation**: Attenuation coefficient for each color channel due to
scattering within the material volume expressed as e-folding distance (m^-1).
@@ -82,6 +84,9 @@ white except normals are zero.
shaders are applied. See [KHR_materials_unlit]
- **Double Sided**: Disable backface culling for this mesh. Equivalent to
`material.doubleSided` of glTF 2.0.
+- **Mirror Hint**: Suggest a client to render reflections of this surface
+ properly e.g. show use a texture that shows output of another render pass from
+ the mirrors perspective. It can be assumed that the mesh is on a single plane.
## LightPart