export declare enum RendererLayer {
    BACKGROUND = 0,
    ALPHA_TEST = 16,
    OPAQUE = 32,
    TRANSLUCENT = 128
}
export declare function makeDepthKey(depth: number, flipDepth: boolean, maxDepth?: number): number;
export declare function getSortKeyLayer(sortKey: number): number;
export declare function setSortKeyLayer(sortKey: number, layer: number): number;
export declare function setSortKeyProgramKey(sortKey: number, programKey: number): number;
export declare function setSortKeyBias(sortKey: number, bias: number): number;
export declare function makeSortKeyOpaque(layer: number, programKey: number): number;
export declare function setSortKeyOpaqueDepth(sortKey: number, depthKey: number): number;
export declare function makeSortKeyTranslucent(layer: number): number;
export declare function setSortKeyTranslucentDepth(sortKey: number, depthKey: number): number;
export declare function makeSortKey(layer: RendererLayer, programKey?: number): number;
export declare function setSortKeyDepthKey(sortKey: number, depthKey: number): number;
export declare function setSortKeyDepth(sortKey: number, depth: number, maxDepth?: number): number;
export declare function getSortKeyDepth(sortKey: number): number;
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