import type { GPUVegaCanvasContext } from '../types/context.js';
/** Every shader source, by the name marks ask for. */
declare const BUILDERS: {
    BlendComposite: (blend: string) => string;
    Curve: (blend: string, kind?: string) => string;
    GradientFill: (blend: string) => string;
    Image: (blend: string) => string;
    MaskComposite: (blend: string) => string;
    Rect: (blend: string) => string;
    Rule: (blend: string) => string;
    SLine: (blend: string) => string;
    SolidFill: (blend: string) => string;
    Symbol: (blend: string) => string;
    SymbolSdf: (blend: string, shape?: string) => string;
    SymbolShape: (blend: string) => string;
    Text: (blend: string) => string;
};
/** A builder name, optionally followed by a sub-variant after a colon. */
export type ShaderKey = keyof typeof BUILDERS | `${keyof typeof BUILDERS}:${string}`;
/**
 * The compiled module for one shader variant, built on first use and cached on
 * the context for the life of the device. `key` names a builder, optionally
 * followed by a sub-variant after a colon.
 *
 * Building on demand rather than up front matters: a chart uses a handful of
 * these, and compiling every blend mode of every shader would put the cost of
 * shaders nobody draws into the first frame.
 */
export declare function shaderModule(ctx: GPUVegaCanvasContext, device: GPUDevice, key: ShaderKey, blend: string): GPUShaderModule;
export {};