import { InternalTexture } from "../../../Materials/Textures/internalTexture";
import type { Nullable } from "../../../types";
import type { DepthTextureCreationOptions } from "../../../Materials/Textures/textureCreationOptions";
import type { Scene } from "../../../scene";
declare module "../../abstractEngine" {
    interface AbstractEngine {
        /**
         * @internal
         */
        _setCubeMapTextureParams(texture: InternalTexture, loadMipmap: boolean, maxLevel?: number): void;
        /**
         * Creates a depth stencil cube texture.
         * This is only available in WebGL 2.
         * @param size The size of face edge in the cube texture.
         * @param options The options defining the cube texture.
         * @returns The cube texture
         */
        _createDepthStencilCubeTexture(size: number, options: DepthTextureCreationOptions): InternalTexture;
        /**
         * Creates a cube texture
         * @param rootUrl defines the url where the files to load is located
         * @param scene defines the current scene
         * @param files defines the list of files to load (1 per face)
         * @param noMipmap defines a boolean indicating that no mipmaps shall be generated (false by default)
         * @param onLoad defines an optional callback raised when the texture is loaded
         * @param onError defines an optional callback raised if there is an issue to load the texture
         * @param format defines the format of the data
         * @param forcedExtension defines the extension to use to pick the right loader
         * @param createPolynomials if a polynomial sphere should be created for the cube texture
         * @param lodScale defines the scale applied to environment texture. This manages the range of LOD level used for IBL according to the roughness
         * @param lodOffset defines the offset applied to environment texture. This manages first LOD level used for IBL according to the roughness
         * @param fallback defines texture to use while falling back when (compressed) texture file not found.
         * @param loaderOptions options to be passed to the loader
         * @param useSRGBBuffer defines if the texture must be loaded in a sRGB GPU buffer (if supported by the GPU).
         * @param buffer defines the data buffer to load instead of loading the rootUrl
         * @returns the cube texture as an InternalTexture
         */
        createCubeTexture(rootUrl: string, scene: Nullable<Scene>, files: Nullable<string[]>, noMipmap: boolean | undefined, onLoad: Nullable<(data?: any) => void>, onError: Nullable<(message?: string, exception?: any) => void>, format: number | undefined, forcedExtension: any, createPolynomials: boolean, lodScale: number, lodOffset: number, fallback: Nullable<InternalTexture>, loaderOptions: any, useSRGBBuffer: boolean, buffer: Nullable<ArrayBufferView>): InternalTexture;
        /**
         * Creates a cube texture
         * @param rootUrl defines the url where the files to load is located
         * @param scene defines the current scene
         * @param files defines the list of files to load (1 per face)
         * @param noMipmap defines a boolean indicating that no mipmaps shall be generated (false by default)
         * @param onLoad defines an optional callback raised when the texture is loaded
         * @param onError defines an optional callback raised if there is an issue to load the texture
         * @param format defines the format of the data
         * @param forcedExtension defines the extension to use to pick the right loader
         * @returns the cube texture as an InternalTexture
         */
        createCubeTexture(rootUrl: string, scene: Nullable<Scene>, files: Nullable<string[]>, noMipmap: boolean, onLoad: Nullable<(data?: any) => void>, onError: Nullable<(message?: string, exception?: any) => void>, format: number | undefined, forcedExtension: any): InternalTexture;
        /**
         * Creates a cube texture
         * @param rootUrl defines the url where the files to load is located
         * @param scene defines the current scene
         * @param files defines the list of files to load (1 per face)
         * @param noMipmap defines a boolean indicating that no mipmaps shall be generated (false by default)
         * @param onLoad defines an optional callback raised when the texture is loaded
         * @param onError defines an optional callback raised if there is an issue to load the texture
         * @param format defines the format of the data
         * @param forcedExtension defines the extension to use to pick the right loader
         * @param createPolynomials if a polynomial sphere should be created for the cube texture
         * @param lodScale defines the scale applied to environment texture. This manages the range of LOD level used for IBL according to the roughness
         * @param lodOffset defines the offset applied to environment texture. This manages first LOD level used for IBL according to the roughness
         * @returns the cube texture as an InternalTexture
         */
        createCubeTexture(rootUrl: string, scene: Nullable<Scene>, files: Nullable<string[]>, noMipmap: boolean, onLoad: Nullable<(data?: any) => void>, onError: Nullable<(message?: string, exception?: any) => void>, format: number | undefined, forcedExtension: any, createPolynomials: boolean, lodScale: number, lodOffset: number): InternalTexture;
        /** @internal */
        createCubeTextureBase(rootUrl: string, scene: Nullable<Scene>, files: Nullable<string[]>, noMipmap: boolean, onLoad: Nullable<(data?: any) => void>, onError: Nullable<(message?: string, exception?: any) => void>, format: number | undefined, forcedExtension: any, createPolynomials: boolean, lodScale: number, lodOffset: number, fallback: Nullable<InternalTexture>, beforeLoadCubeDataCallback: Nullable<(texture: InternalTexture, data: ArrayBufferView | ArrayBufferView[]) => void>, imageHandler: Nullable<(texture: InternalTexture, imgs: HTMLImageElement[] | ImageBitmap[]) => void>, useSRGBBuffer: boolean, buffer: Nullable<ArrayBufferView>): InternalTexture;
        /** @internal */
        _partialLoadFile(url: string, index: number, loadedFiles: ArrayBuffer[], onfinish: (files: ArrayBuffer[]) => void, onErrorCallBack: Nullable<(message?: string, exception?: any) => void>): void;
        /** @internal */
        _cascadeLoadFiles(scene: Nullable<Scene>, onfinish: (images: ArrayBuffer[]) => void, files: string[], onError: Nullable<(message?: string, exception?: any) => void>): void;
        /** @internal */
        _cascadeLoadImgs(scene: Nullable<Scene>, texture: InternalTexture, onfinish: Nullable<(texture: InternalTexture, images: HTMLImageElement[] | ImageBitmap[]) => void>, files: string[], onError: Nullable<(message?: string, exception?: any) => void>, mimeType?: string): void;
        /** @internal */
        _partialLoadImg(url: string, index: number, loadedImages: HTMLImageElement[] | ImageBitmap[], scene: Nullable<Scene>, texture: InternalTexture, onfinish: Nullable<(texture: InternalTexture, images: HTMLImageElement[] | ImageBitmap[]) => void>, onErrorCallBack: Nullable<(message?: string, exception?: any) => void>, mimeType?: string): void;
        /**
         * Force the mipmap generation for the given render target texture
         * @param texture defines the render target texture to use
         * @param unbind defines whether or not to unbind the texture after generation. Defaults to true.
         */
        generateMipMapsForCubemap(texture: InternalTexture, unbind?: boolean): void;
    }
}