declare module BABYLON {
    class GradientMaterial extends PushMaterial {
        private _maxSimultaneousLights;
        maxSimultaneousLights: number;
        topColor: Color3;
        topColorAlpha: number;
        bottomColor: Color3;
        bottomColorAlpha: number;
        offset: number;
        scale: number;
        smoothness: number;
        disableLighting: boolean;
        private _scaledDiffuse;
        private _renderId;
        constructor(name: string, scene: Scene);
        needAlphaBlending(): boolean;
        needAlphaTesting(): boolean;
        getAlphaTestTexture(): Nullable<BaseTexture>;
        isReadyForSubMesh(mesh: AbstractMesh, subMesh: SubMesh, useInstances?: boolean): boolean;
        bindForSubMesh(world: Matrix, mesh: Mesh, subMesh: SubMesh): void;
        getAnimatables(): IAnimatable[];
        dispose(forceDisposeEffect?: boolean): void;
        clone(name: string): GradientMaterial;
        serialize(): any;
        getClassName(): string;
        static Parse(source: any, scene: Scene, rootUrl: string): GradientMaterial;
    }
}