/**
 * Shared raster GPU styling pipeline — used by BOTH the COG layer (raster.ts)
 * and the Zarr layer (zarr.ts). Depends only on `@developmentseed/deck.gl-raster`
 * (the GPU modules), NOT on `@developmentseed/deck.gl-geotiff` or `zarrita`, so
 * neither lazy chunk drags the other's decoder in.
 *
 * The contract: a per-tile Float32 texture (single-band `r32float`, or three-
 * band `rgba32float`) plus the styling scalars, run through
 * FilterNoDataVal → LinearRescale → Colormap (single-band only). Restretch and
 * recolor are uniform-only updates on a fresh layer instance; the tile cache
 * survives because the getTileData callback that produced these textures is a
 * module-level stable reference in each layer.
 */
import type { Device, Texture } from "@luma.gl/core";
import { type RasterModule } from "@developmentseed/deck.gl-raster/gpu-modules";
/** A styled tile's GPU payload (satisfies deck.gl-raster's MinimalTileData + ours). */
export interface OmTileData {
    width: number;
    height: number;
    byteLength: number;
    texture: Texture;
    colormapTexture: Texture;
    bandCount: number;
    nodata: number | null;
}
/** The four styling scalars every raster source (COG, Zarr) exposes. */
export interface RasterStyle {
    /** Rescale window; both default to the 8-bit range when absent. */
    rescaleMin?: number | null;
    rescaleMax?: number | null;
    /** Sprite colormap name (single-band sources only). Unknown names warn + fall back to gray. */
    colormap?: string | null;
    /** Overrides the source's own nodata sentinel. */
    nodataOverride?: number | null;
}
export declare function getColormapTexture(device: Device): Promise<Texture>;
export declare function resolveColormapIndex(name: string): number;
/**
 * The styled render pipeline for one tile. Nodata tests the RAW datum, so it
 * precedes the rescale squash; the colormap runs only for single-band sources.
 */
export declare function buildRenderPipeline(tile: OmTileData, style: RasterStyle): {
    renderPipeline: RasterModule[];
};