/**
 * rgui WebGPU renderer — first increment: background + readable-grid
 * dots/field on the GPU.
 *
 * The grid is the one element whose instance count scales without bound
 * (every readable grid point on screen, ×2 levels, plus field tails), so it
 * moves to instanced SDF quads first. Graph content keeps rendering on the
 * 2D canvas above with a transparent background; later increments can move
 * wires and node blocks behind this same seam.
 */
import { type ViewTransform } from "../core/grid.js";
import { type RgRule } from "../core/rule.js";
import { type RgTheme } from "../core/theme.js";
import type { FieldSource } from "./canvas2d.js";
export interface WebGPUGridRenderer {
    /** resolves true when the pipeline is live, false when unavailable */
    ready: Promise<boolean>;
    render(t: ViewTransform): void;
    resize(): void;
    destroy(): void;
}
export declare function createWebGPUGridRenderer(canvas: HTMLCanvasElement, rule?: RgRule, field?: () => FieldSource[], 
/** z of the field arrows: +1 = at the viewer (⊙), -1 = into the screen (⊗) */
zDir?: () => number, 
/** global lateral field direction from the viewport 3-D rotation */
fieldTilt?: () => readonly [number, number], maxDpr?: number, 
/** live theme object (mutated by viewer.setTheme); colors read per frame */
theme?: RgTheme, 
/**
 * background clear; false = transparent underlay (page shows through);
 * a getter re-reads per frame. Default: the theme background.
 */
background?: string | false | (() => string | false)): WebGPUGridRenderer;
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