export declare abstract class TextureSource<T extends TexImageSource = TexImageSource> {
    abstract readonly isReady: boolean;
    abstract readonly width: number;
    abstract readonly height: number;
    abstract readonly data: T;
    readonly isPowerOfTwo: boolean;
    abstract update(): boolean;
    protected updatePowerOfTwo(): void;
}
export declare class TextureSourceImage extends TextureSource<HTMLImageElement> {
    get isReady(): boolean;
    get width(): number;
    get height(): number;
    readonly data: HTMLImageElement;
    constructor(data: HTMLImageElement);
    hasChanged: boolean;
    update(): boolean;
}
export declare class TextureSourceVideo extends TextureSource<HTMLVideoElement> {
    get isReady(): boolean;
    get width(): number;
    get height(): number;
    readonly data: HTMLVideoElement;
    constructor(data: HTMLVideoElement);
    private videoTime;
    update(): boolean;
}
export declare class TextureSourceData extends TextureSource<ImageBitmap | ImageData | HTMLCanvasElement | OffscreenCanvas> {
    get isReady(): boolean;
    get width(): number;
    get height(): number;
    readonly data: ImageBitmap | ImageData | HTMLCanvasElement | OffscreenCanvas;
    constructor(data: ImageBitmap | ImageData | HTMLCanvasElement | OffscreenCanvas);
    hasChanged: boolean;
    update(): boolean;
}
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