import type { GLTF, TypedArray } from '@gltf-transform/core';
export declare enum EncoderMethod {
    QUANTIZE = "quantize",
    FILTER = "filter"
}
export interface MeshoptBufferExtension {
    fallback?: boolean;
}
export declare enum MeshoptMode {
    ATTRIBUTES = "ATTRIBUTES",
    TRIANGLES = "TRIANGLES",
    INDICES = "INDICES"
}
export declare enum MeshoptFilter {
    /** No filter — quantize only. */
    NONE = "NONE",
    /** Four 8- or 16-bit normalized values. */
    OCTAHEDRAL = "OCTAHEDRAL",
    /** Four 16-bit normalized values. */
    QUATERNION = "QUATERNION",
    /** K single-precision floating point values. */
    EXPONENTIAL = "EXPONENTIAL"
}
export interface MeshoptBufferViewExtension {
    buffer: number;
    byteOffset: number;
    byteLength: number;
    byteStride: number;
    count: number;
    mode: MeshoptMode;
    filter?: MeshoptFilter;
}
/**
 * When using filters, the accessor definition written to the file will not necessarily have the
 * same properties as the input accessor. For example, octahedral encoding requires int8 or int16
 * output, so float32 input must be ignored.
 */
export interface PreparedAccessor {
    array: TypedArray;
    byteStride: number;
    normalized: boolean;
    componentType: GLTF.AccessorComponentType;
    min?: number[];
    max?: number[];
}