import { AddressBus } from '../memory/address-bus';
import { Display } from './display';
export declare const PPU: {
    retrieveSprites: (oamSprites: ISprite[], line: number, spritesHeight: number) => ISprite[];
    readCgbPaletteColor: (palettes: number[], paletteIndex: number, colorIndex: number) => number[];
    renderLine: (display: Display, addressBus: AddressBus, line: number) => void;
};
export declare enum SPRITE_PRIORITY {
    ABOVE_BG = 0,
    BELOW_BG = 1,
}
export declare enum TILE_MAP {
    MAP_1 = 0,
    MAP_2 = 1,
}
export declare enum TILE_AREA {
    AREA_1 = 0,
    AREA_2 = 1,
}
export interface ISprite {
    y: number;
    x: number;
    tile: number;
    priority: SPRITE_PRIORITY;
    yFlip: boolean;
    xFlip: boolean;
    palette: number;
    vramBank: number;
    cgbPalette: number;
}