"description":"This is an RGB 3-channel image (defaults to uniform alpha of 1.0), or an RGBA 4-channel image, or a 4 value array for a uniform color with alpha.",
"description":"1-channel layer image or a single value in this JSON file for a uniform heightmap. This layer and the \"normal\" layer should not both be defined at the same time.",
"description":"This is a 3-channel image (or 4-channel where the 4th channel is ignored) or a 3-value array for a uniform MER. RGB images map Red to Metalness, Green to Emissive, and Blue to Roughness.",
"description":"This is a 4-channel image or a 4-value array for a uniform MERS. RGBA images map Red to Metalness, Green to Emissive, Blue to Roughness and Alpha to Subsurface.",
"anyOf":[
{
"$ref":"#/definitions/file_name"
},
{
"$ref":"#/definitions/rgba"
}
]
},
"normal":{
"title":"Normal Map",
"description":"This is a 3-channel normal map image (or 4-channel where the 4th channel is ignored). This layer and the \"heightmap\" layer should not both be defined at the same time.",