app/node_modules/@babylonjs/core/Materials/iEffectFallbacks.d.ts

import type { Effect } from "./effect";
/**
 * Interface used to define common properties for effect fallbacks
 */
export interface IEffectFallbacks {
    /**
     * Removes the defines that should be removed when falling back.
     * @param currentDefines defines the current define statements for the shader.
     * @param effect defines the current effect we try to compile
     * @returns The resulting defines with defines of the current rank removed.
     */
    reduce(currentDefines: string, effect: Effect): string;
    /**
     * Removes the fallback from the bound mesh.
     */
    unBindMesh(): void;
    /**
     * Checks to see if more fallbacks are still available.
     */
    hasMoreFallbacks: boolean;
}