NvidiaWarp-GarmentCode/exts/omni.warp/data/scenes/assets/materials/particle_material.usda

#usda 1.0
(
    defaultPrim = "World"
    upAxis = "Y"
)

def Xform "World"
{
    def Material "ParticleMaterial"
    {
        token outputs:mdl:displacement.connect = </World/ParticleMaterial/Shader.outputs:out>
        token outputs:mdl:surface.connect = </World/ParticleMaterial/Shader.outputs:out>
        token outputs:mdl:volume.connect = </World/ParticleMaterial/Shader.outputs:out>

        def Shader "Shader"
        {
            uniform token info:implementationSource = "sourceAsset"
            uniform asset info:mdl:sourceAsset = @OmniPBRBase.mdl@
            uniform token info:mdl:sourceAsset:subIdentifier = "OmniPBRBase"

            float inputs:specular_level = 0 (
                customData = {
                    float default = 0.5
                    dictionary soft_range = {
                        float max = 1
                        float min = 0
                    }
                }
                displayGroup = "Reflectivity"
                displayName = "Specular"
                doc = "The specular level (intensity) of the material"
                hidden = false
            )
            token outputs:out (
                renderType = "material"
            )
        }
    }
}