import type { ShaderSpec } from "./shader-manifest";
type GL = WebGL2RenderingContext | WebGLRenderingContext;
export declare class ShaderRegistry {
    private _gl;
    private _programs;
    constructor(gl: GL);
    /**
     * Compile + link every program in `specs` eagerly. Used by
     * `WebGLContextManager` when constructed with `precompile: true`
     * so the first-frame path doesn't pay the compile cost inline.
     *
     * Compilation is synchronous and serial — single-digit ms per
     * program on a modern GPU. With `KHR_parallel_shader_compile`
     * (browser-supported but not yet wired here) the work could be
     * dispatched to driver threads; today we accept the wall-time
     * cost in exchange for simpler code and a deterministic init.
     */
    precompile(specs: readonly ShaderSpec[]): void;
    getOrCreate(name: string, vertSrc: string, fragSrc: string): WebGLProgram;
    releaseAll(): void;
}
export {};