/**
 * A texture is a container for texel data that can be utilized in a fragment shader. Typically,
 * the texel data represents an image that is mapped over geometry.
 *
 * @category Graphics
 */
export class Texture {
    /**
     * Create a new Texture instance.
     *
     * @param {import('./graphics-device.js').GraphicsDevice} graphicsDevice - The graphics device
     * used to manage this texture.
     * @param {object} [options] - Object for passing optional arguments.
     * @param {string} [options.name] - The name of the texture. Defaults to null.
     * @param {number} [options.width] - The width of the texture in pixels. Defaults to 4.
     * @param {number} [options.height] - The height of the texture in pixels. Defaults to 4.
     * @param {number} [options.depth] - The number of depth slices in a 3D texture (not supported by WebGl1).
     * @param {number} [options.format] - The pixel format of the texture. Can be:
     *
     * - {@link PIXELFORMAT_A8}
     * - {@link PIXELFORMAT_L8}
     * - {@link PIXELFORMAT_LA8}
     * - {@link PIXELFORMAT_RGB565}
     * - {@link PIXELFORMAT_RGBA5551}
     * - {@link PIXELFORMAT_RGBA4}
     * - {@link PIXELFORMAT_RGB8}
     * - {@link PIXELFORMAT_RGBA8}
     * - {@link PIXELFORMAT_DXT1}
     * - {@link PIXELFORMAT_DXT3}
     * - {@link PIXELFORMAT_DXT5}
     * - {@link PIXELFORMAT_RGB16F}
     * - {@link PIXELFORMAT_RGBA16F}
     * - {@link PIXELFORMAT_RGB32F}
     * - {@link PIXELFORMAT_RGBA32F}
     * - {@link PIXELFORMAT_ETC1}
     * - {@link PIXELFORMAT_PVRTC_2BPP_RGB_1}
     * - {@link PIXELFORMAT_PVRTC_2BPP_RGBA_1}
     * - {@link PIXELFORMAT_PVRTC_4BPP_RGB_1}
     * - {@link PIXELFORMAT_PVRTC_4BPP_RGBA_1}
     * - {@link PIXELFORMAT_111110F}
     * - {@link PIXELFORMAT_ASTC_4x4}
     * - {@link PIXELFORMAT_ATC_RGB}
     * - {@link PIXELFORMAT_ATC_RGBA}
     *
     * Defaults to {@link PIXELFORMAT_RGBA8}.
     * @param {string} [options.projection] - The projection type of the texture, used when the
     * texture represents an environment. Can be:
     *
     * - {@link TEXTUREPROJECTION_NONE}
     * - {@link TEXTUREPROJECTION_CUBE}
     * - {@link TEXTUREPROJECTION_EQUIRECT}
     * - {@link TEXTUREPROJECTION_OCTAHEDRAL}
     *
     * Defaults to {@link TEXTUREPROJECTION_CUBE} if options.cubemap is true, otherwise
     * {@link TEXTUREPROJECTION_NONE}.
     * @param {number} [options.minFilter] - The minification filter type to use. Defaults to
     * {@link FILTER_LINEAR_MIPMAP_LINEAR}.
     * @param {number} [options.magFilter] - The magnification filter type to use. Defaults to
     * {@link FILTER_LINEAR}.
     * @param {number} [options.anisotropy] - The level of anisotropic filtering to use. Defaults
     * to 1.
     * @param {number} [options.addressU] - The repeat mode to use in the U direction. Defaults to
     * {@link ADDRESS_REPEAT}.
     * @param {number} [options.addressV] - The repeat mode to use in the V direction. Defaults to
     * {@link ADDRESS_REPEAT}.
     * @param {number} [options.addressW] - The repeat mode to use in the W direction. Defaults to
     * {@link ADDRESS_REPEAT}.
     * @param {boolean} [options.mipmaps] - When enabled try to generate or use mipmaps for this
     * texture. Default is true.
     * @param {boolean} [options.cubemap] - Specifies whether the texture is to be a cubemap.
     * Defaults to false.
     * @param {number} [options.arrayLength] - Specifies whether the texture is to be a 2D texture array.
     * When passed in as undefined or < 1, this is not an array texture. If >= 1, this is an array texture.
     * (not supported by WebGL1). Defaults to undefined.
     * @param {boolean} [options.volume] - Specifies whether the texture is to be a 3D volume
     * (not supported by WebGL1). Defaults to false.
     * @param {string} [options.type] - Specifies the texture type.  Can be:
     *
     * - {@link TEXTURETYPE_DEFAULT}
     * - {@link TEXTURETYPE_RGBM}
     * - {@link TEXTURETYPE_RGBE}
     * - {@link TEXTURETYPE_RGBP}
     * - {@link TEXTURETYPE_SWIZZLEGGGR}
     *
     * Defaults to {@link TEXTURETYPE_DEFAULT}.
     * @param {boolean} [options.fixCubemapSeams] - Specifies whether this cubemap texture requires
     * special seam fixing shader code to look right. Defaults to false.
     * @param {boolean} [options.flipY] - Specifies whether the texture should be flipped in the
     * Y-direction. Only affects textures with a source that is an image, canvas or video element.
     * Does not affect cubemaps, compressed textures or textures set from raw pixel data. Defaults
     * to false.
     * @param {boolean} [options.premultiplyAlpha] - If true, the alpha channel of the texture (if
     * present) is multiplied into the color channels. Defaults to false.
     * @param {boolean} [options.compareOnRead] - When enabled, and if texture format is
     * {@link PIXELFORMAT_DEPTH} or {@link PIXELFORMAT_DEPTHSTENCIL}, hardware PCF is enabled for
     * this texture, and you can get filtered results of comparison using texture() in your shader
     * (not supported by WebGL1). Defaults to false.
     * @param {number} [options.compareFunc] - Comparison function when compareOnRead is enabled
     * (not supported by WebGL1). Can be:
     *
     * - {@link FUNC_LESS}
     * - {@link FUNC_LESSEQUAL}
     * - {@link FUNC_GREATER}
     * - {@link FUNC_GREATEREQUAL}
     * - {@link FUNC_EQUAL}
     * - {@link FUNC_NOTEQUAL}
     *
     * Defaults to {@link FUNC_LESS}.
     * @param {Uint8Array[]|Uint16Array[]|Uint32Array[]|Float32Array[]|HTMLCanvasElement[]|HTMLImageElement[]|HTMLVideoElement[]|Uint8Array[][]} [options.levels]
     * - Array of Uint8Array or other supported browser interface; or a two-dimensional array
     * of Uint8Array if options.arrayLength is defined and greater than zero.
     * @param {boolean} [options.storage] - Defines if texture can be used as a storage texture by
     * a compute shader. Defaults to false.
     * @example
     * // Create a 8x8x24-bit texture
     * const texture = new pc.Texture(graphicsDevice, {
     *     width: 8,
     *     height: 8,
     *     format: pc.PIXELFORMAT_RGB8
     * });
     *
     * // Fill the texture with a gradient
     * const pixels = texture.lock();
     * const count = 0;
     * for (let i = 0; i < 8; i++) {
     *     for (let j = 0; j < 8; j++) {
     *         pixels[count++] = i * 32;
     *         pixels[count++] = j * 32;
     *         pixels[count++] = 255;
     *     }
     * }
     * texture.unlock();
     */
    constructor(graphicsDevice: import("./graphics-device.js").GraphicsDevice, options?: {
        name?: string;
        width?: number;
        height?: number;
        depth?: number;
        format?: number;
        projection?: string;
        minFilter?: number;
        magFilter?: number;
        anisotropy?: number;
        addressU?: number;
        addressV?: number;
        addressW?: number;
        mipmaps?: boolean;
        cubemap?: boolean;
        arrayLength?: number;
        volume?: boolean;
        type?: string;
        fixCubemapSeams?: boolean;
        flipY?: boolean;
        premultiplyAlpha?: boolean;
        compareOnRead?: boolean;
        compareFunc?: number;
        levels?: Uint8Array[] | Uint16Array[] | Uint32Array[] | Float32Array[] | HTMLCanvasElement[] | HTMLImageElement[] | HTMLVideoElement[] | Uint8Array[][];
        storage?: boolean;
    });
    /**
     * The name of the texture.
     *
     * @type {string}
     */
    name: string;
    /** @ignore */
    _gpuSize: number;
    /** @protected */
    protected id: number;
    /** @protected */
    protected _invalid: boolean;
    /** @protected */
    protected _lockedLevel: number;
    /** @protected */
    protected _lockedMode: number;
    /**
     * A render version used to track the last time the texture properties requiring bind group
     * to be updated were changed.
     *
     * @type {number}
     * @ignore
     */
    renderVersionDirty: number;
    /** @protected */
    protected _storage: boolean;
    device: import("./graphics-device.js").GraphicsDevice;
    _width: number;
    _height: number;
    _format: number;
    _compressed: boolean;
    _integerFormat: boolean;
    _volume: boolean;
    _depth: number;
    _arrayLength: number;
    _cubemap: boolean;
    fixCubemapSeams: boolean;
    _flipY: boolean;
    _premultiplyAlpha: boolean;
    _mipmaps: any;
    _minFilter: number;
    _magFilter: number;
    _anisotropy: number;
    _addressU: number;
    _addressV: number;
    _addressW: number;
    _compareOnRead: boolean;
    _compareFunc: number;
    type: string;
    projection: string;
    impl: any;
    profilerHint: any;
    _levels: Uint8Array<ArrayBufferLike>[] | Uint16Array<ArrayBufferLike>[] | Uint32Array<ArrayBufferLike>[] | Float32Array<ArrayBufferLike>[] | HTMLCanvasElement[] | HTMLImageElement[] | HTMLVideoElement[] | Uint8Array<ArrayBufferLike>[][];
    /**
     * Frees resources associated with this texture.
     */
    destroy(): void;
    /**
     * Resizes the texture. Only supported for render target textures, as it does not resize the
     * existing content of the texture, but only the allocated buffer for rendering into.
     *
     * @param {number} width - The new width of the texture.
     * @param {number} height - The new height of the texture.
     * @param {number} [depth] - The new depth of the texture. Defaults to 1.
     * @ignore
     */
    resize(width: number, height: number, depth?: number): void;
    /**
     * Called when the rendering context was lost. It releases all context related resources.
     *
     * @ignore
     */
    loseContext(): void;
    /**
     * Updates vram size tracking for the texture, size can be positive to add or negative to subtract
     *
     * @ignore
     */
    adjustVramSizeTracking(vram: any, size: any): void;
    propertyChanged(flag: any): void;
    /**
     * Returns number of required mip levels for the texture based on its dimensions and parameters.
     *
     * @ignore
     * @type {number}
     */
    get requiredMipLevels(): number;
    /**
     * Returns the current lock mode. One of:
     *
     * - {@link TEXTURELOCK_NONE}
     * - {@link TEXTURELOCK_READ}
     * - {@link TEXTURELOCK_WRITE}
     *
     * @ignore
     * @type {number}
     */
    get lockedMode(): number;
    /**
     * Sets the minification filter to be applied to the texture. Can be:
     *
     * - {@link FILTER_NEAREST}
     * - {@link FILTER_LINEAR}
     * - {@link FILTER_NEAREST_MIPMAP_NEAREST}
     * - {@link FILTER_NEAREST_MIPMAP_LINEAR}
     * - {@link FILTER_LINEAR_MIPMAP_NEAREST}
     * - {@link FILTER_LINEAR_MIPMAP_LINEAR}
     *
     * @type {number}
     */
    set minFilter(v: number);
    /**
     * Gets the minification filter to be applied to the texture.
     *
     * @type {number}
     */
    get minFilter(): number;
    /**
     * Sets the magnification filter to be applied to the texture. Can be:
     *
     * - {@link FILTER_NEAREST}
     * - {@link FILTER_LINEAR}
     *
     * @type {number}
     */
    set magFilter(v: number);
    /**
     * Gets the magnification filter to be applied to the texture.
     *
     * @type {number}
     */
    get magFilter(): number;
    /**
     * Sets the addressing mode to be applied to the texture horizontally. Can be:
     *
     * - {@link ADDRESS_REPEAT}
     * - {@link ADDRESS_CLAMP_TO_EDGE}
     * - {@link ADDRESS_MIRRORED_REPEAT}
     *
     * @type {number}
     */
    set addressU(v: number);
    /**
     * Gets the addressing mode to be applied to the texture horizontally.
     *
     * @type {number}
     */
    get addressU(): number;
    /**
     * Sets the addressing mode to be applied to the texture vertically. Can be:
     *
     * - {@link ADDRESS_REPEAT}
     * - {@link ADDRESS_CLAMP_TO_EDGE}
     * - {@link ADDRESS_MIRRORED_REPEAT}
     *
     * @type {number}
     */
    set addressV(v: number);
    /**
     * Gets the addressing mode to be applied to the texture vertically.
     *
     * @type {number}
     */
    get addressV(): number;
    /**
     * Sets the addressing mode to be applied to the 3D texture depth. Can be:
     *
     * - {@link ADDRESS_REPEAT}
     * - {@link ADDRESS_CLAMP_TO_EDGE}
     * - {@link ADDRESS_MIRRORED_REPEAT}
     *
     * @type {number}
     */
    set addressW(addressW: number);
    /**
     * Gets the addressing mode to be applied to the 3D texture depth.
     *
     * @type {number}
     */
    get addressW(): number;
    /**
     * When enabled, and if texture format is {@link PIXELFORMAT_DEPTH} or
     * {@link PIXELFORMAT_DEPTHSTENCIL}, hardware PCF is enabled for this texture, and you can get
     * filtered results of comparison using texture() in your shader (not supported on WebGL1).
     *
     * @type {boolean}
     */
    set compareOnRead(v: boolean);
    /**
     * Gets whether you can get filtered results of comparison using texture() in your shader.
     *
     * @type {boolean}
     */
    get compareOnRead(): boolean;
    /**
     * Sets the comparison function when compareOnRead is enabled. Possible values:
     *
     * - {@link FUNC_LESS}
     * - {@link FUNC_LESSEQUAL}
     * - {@link FUNC_GREATER}
     * - {@link FUNC_GREATEREQUAL}
     * - {@link FUNC_EQUAL}
     * - {@link FUNC_NOTEQUAL}
     *
     * @type {number}
     */
    set compareFunc(v: number);
    /**
     * Sets the comparison function when compareOnRead is enabled.
     *
     * @type {number}
     */
    get compareFunc(): number;
    /**
     * Sets the integer value specifying the level of anisotropy to apply to the texture ranging
     * from 1 (no anisotropic filtering) to the {@link GraphicsDevice} property maxAnisotropy.
     *
     * @type {number}
     */
    set anisotropy(v: number);
    /**
     * Gets the integer value specifying the level of anisotropy to apply to the texture.
     *
     * @type {number}
     */
    get anisotropy(): number;
    /**
     * Sets whether the texture should generate/upload mipmaps.
     *
     * @type {boolean}
     */
    set mipmaps(v: boolean);
    /**
     * Gets whether the texture should generate/upload mipmaps.
     *
     * @type {boolean}
     */
    get mipmaps(): boolean;
    _needsMipmapsUpload: any;
    /**
     * Defines if texture can be used as a storage texture by a compute shader.
     *
     * @type {boolean}
     */
    get storage(): boolean;
    /**
     * The width of the texture in pixels.
     *
     * @type {number}
     */
    get width(): number;
    /**
     * The height of the texture in pixels.
     *
     * @type {number}
     */
    get height(): number;
    /**
     * The number of depth slices in a 3D texture.
     *
     * @type {number}
     */
    get depth(): number;
    /**
     * The pixel format of the texture. Can be:
     *
     * - {@link PIXELFORMAT_A8}
     * - {@link PIXELFORMAT_L8}
     * - {@link PIXELFORMAT_LA8}
     * - {@link PIXELFORMAT_RGB565}
     * - {@link PIXELFORMAT_RGBA5551}
     * - {@link PIXELFORMAT_RGBA4}
     * - {@link PIXELFORMAT_RGB8}
     * - {@link PIXELFORMAT_RGBA8}
     * - {@link PIXELFORMAT_DXT1}
     * - {@link PIXELFORMAT_DXT3}
     * - {@link PIXELFORMAT_DXT5}
     * - {@link PIXELFORMAT_RGB16F}
     * - {@link PIXELFORMAT_RGBA16F}
     * - {@link PIXELFORMAT_RGB32F}
     * - {@link PIXELFORMAT_RGBA32F}
     * - {@link PIXELFORMAT_ETC1}
     * - {@link PIXELFORMAT_PVRTC_2BPP_RGB_1}
     * - {@link PIXELFORMAT_PVRTC_2BPP_RGBA_1}
     * - {@link PIXELFORMAT_PVRTC_4BPP_RGB_1}
     * - {@link PIXELFORMAT_PVRTC_4BPP_RGBA_1}
     * - {@link PIXELFORMAT_111110F}
     * - {@link PIXELFORMAT_ASTC_4x4}>/li>
     * - {@link PIXELFORMAT_ATC_RGB}
     * - {@link PIXELFORMAT_ATC_RGBA}
     *
     * @type {number}
     */
    get format(): number;
    /**
     * Returns true if this texture is a cube map and false otherwise.
     *
     * @type {boolean}
     */
    get cubemap(): boolean;
    get gpuSize(): number;
    /**
     * Returns true if this texture is a 2D texture array and false otherwise.
     *
     * @type {boolean}
     */
    get array(): boolean;
    /**
     * Returns the number of textures inside this texture if this is a 2D array texture or 0 otherwise.
     *
     * @type {number}
     */
    get arrayLength(): number;
    /**
     * Returns true if this texture is a 3D volume and false otherwise.
     *
     * @type {boolean}
     */
    get volume(): boolean;
    /**
     * Sets whether the texture should be flipped in the Y-direction. Only affects textures
     * with a source that is an image, canvas or video element. Does not affect cubemaps,
     * compressed textures or textures set from raw pixel data. Defaults to true.
     *
     * @type {boolean}
     */
    set flipY(flipY: boolean);
    /**
     * Gets whether the texture should be flipped in the Y-direction.
     *
     * @type {boolean}
     */
    get flipY(): boolean;
    _needsUpload: boolean;
    set premultiplyAlpha(premultiplyAlpha: boolean);
    get premultiplyAlpha(): boolean;
    /**
     * Returns true if all dimensions of the texture are power of two, and false otherwise.
     *
     * @type {boolean}
     */
    get pot(): boolean;
    get encoding(): "srgb" | "linear" | "rgbm" | "rgbe" | "rgbp";
    dirtyAll(): void;
    _levelsUpdated: boolean[] | boolean[][];
    _mipmapsUploaded: boolean;
    /**
     * Locks a miplevel of the texture, returning a typed array to be filled with pixel data.
     *
     * @param {object} [options] - Optional options object. Valid properties are as follows:
     * @param {number} [options.level] - The mip level to lock with 0 being the top level. Defaults
     * to 0.
     * @param {number} [options.face] - If the texture is a cubemap, this is the index of the face
     * to lock.
     * @param {number} [options.mode] - The lock mode. Can be:
     * - {@link TEXTURELOCK_READ}
     * - {@link TEXTURELOCK_WRITE}
     * Defaults to {@link TEXTURELOCK_WRITE}.
     * @returns {Uint8Array|Uint16Array|Uint32Array|Float32Array} A typed array containing the pixel data of
     * the locked mip level.
     */
    lock(options?: {
        level?: number;
        face?: number;
        mode?: number;
    }): Uint8Array | Uint16Array | Uint32Array | Float32Array;
    /**
     * Set the pixel data of the texture from a canvas, image, video DOM element. If the texture is
     * a cubemap, the supplied source must be an array of 6 canvases, images or videos.
     *
     * @param {HTMLCanvasElement|HTMLImageElement|HTMLVideoElement|HTMLCanvasElement[]|HTMLImageElement[]|HTMLVideoElement[]} source - A
     * canvas, image or video element, or an array of 6 canvas, image or video elements.
     * @param {number} [mipLevel] - A non-negative integer specifying the image level of detail.
     * Defaults to 0, which represents the base image source. A level value of N, that is greater
     * than 0, represents the image source for the Nth mipmap reduction level.
     */
    setSource(source: HTMLCanvasElement | HTMLImageElement | HTMLVideoElement | HTMLCanvasElement[] | HTMLImageElement[] | HTMLVideoElement[], mipLevel?: number): void;
    /**
     * Get the pixel data of the texture. If this is a cubemap then an array of 6 images will be
     * returned otherwise a single image.
     *
     * @param {number} [mipLevel] - A non-negative integer specifying the image level of detail.
     * Defaults to 0, which represents the base image source. A level value of N, that is greater
     * than 0, represents the image source for the Nth mipmap reduction level.
     * @returns {HTMLImageElement} The source image of this texture. Can be null if source not
     * assigned for specific image level.
     */
    getSource(mipLevel?: number): HTMLImageElement;
    /**
     * Unlocks the currently locked mip level and uploads it to VRAM.
     */
    unlock(): void;
    /**
     * Forces a reupload of the textures pixel data to graphics memory. Ordinarily, this function
     * is called by internally by {@link Texture#setSource} and {@link Texture#unlock}. However, it
     * still needs to be called explicitly in the case where an HTMLVideoElement is set as the
     * source of the texture.  Normally, this is done once every frame before video textured
     * geometry is rendered.
     */
    upload(): void;
    /**
     * Download texture's top level data from graphics memory to local memory.
     *
     * @ignore
     */
    downloadAsync(): Promise<void>;
}