material-attributes#
Code |
NVM.001 |
---|---|
Validator |
|
Compatibility |
rtx |
Tags |
🔑 |
Summary#
Materials must specify additional “non-visual” material attributes
Description#
Materials bound to geometry prims with computed purpose “render” or “default” must have non-visual material attributes assigned to specify additional properties that affect non-visual sensor response.
Why is it required?#
NVIDIA RTX requires these attributes to simulate non-visual sensors
Special material properties affect sensor behavior. Attributes are spectrally dependent behavior that define how the a base substrate material is composited or layered with additional data driving response functions.
Required for accurate simulation of retroreflective surfaces
Needed for single-sided or transparent materials
Examples#
# Invalid: No attributes specified
def Material "BadMaterial" (
prepend apiSchemas = ["MaterialBindingAPI"]
)
{
token omni:simready:nonvisual:base = "aluminum"
token omni:simready:nonvisual:coating = "clearcoat"
}
# Valid: Attributes specified
def Material "GoodMaterial" (
prepend apiSchemas = ["MaterialBindingAPI"]
)
{
token omni:simready:nonvisual:base = "aluminum"
token omni:simready:nonvisual:coating = "clearcoat"
token[] omni:simready:nonvisual:attributes = ["retroreflective", "single_sided"]
}
How to comply#
Set omni:simready:nonvisual:attributes on materials
Use valid attribute types:
none
emissive
retroreflective
single_sided
visually_transparent