export type ExternalParityMaterialExtension = "clearcoat" | "sheen" | "specular" | "transmission" | "volume" | "ior" | "anisotropy" | "iridescence" | "emissive-strength" | "texture-transform" | "multi-uv";
export interface ExternalParityMaterialExtensionState {
    readonly extension: ExternalParityMaterialExtension;
    readonly support: "supported" | "bounded" | "unsupported";
    readonly diagnostic: string;
}
export declare const EXTERNAL_PARITY_MATERIAL_EXTENSION_SUPPORT: readonly ExternalParityMaterialExtensionState[];
export declare function getExternalParityMaterialExtensionState(extension: ExternalParityMaterialExtension): ExternalParityMaterialExtensionState;
export declare function createExternalParityMaterialExtensionDiagnostics(requested: readonly ExternalParityMaterialExtension[]): readonly ExternalParityMaterialExtensionState[];
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