@awayjs/stage/lib/webgl/CubeTextureWebGL.ts

Stage for AwayJS

import { ICubeTexture } from '../base/ICubeTexture';

import { TextureBaseWebGL } from './TextureBaseWebGL';
import { ContextWebGL } from './ContextWebGL';

export class CubeTextureWebGL extends TextureBaseWebGL implements ICubeTexture {

	private _textureSelectorDictionary: Array<number> = new Array<number>(6);

	public textureType: string = 'textureCube';
	private _size: number;

	constructor(context: ContextWebGL, size: number) {
		super(context);
		const gl = this._gl;
		this._size = size;
		this._glTexture = this._gl.createTexture();

		this._textureSelectorDictionary[0] = gl.TEXTURE_CUBE_MAP_POSITIVE_X;
		this._textureSelectorDictionary[1] = gl.TEXTURE_CUBE_MAP_NEGATIVE_X;
		this._textureSelectorDictionary[2] = gl.TEXTURE_CUBE_MAP_POSITIVE_Y;
		this._textureSelectorDictionary[3] = gl.TEXTURE_CUBE_MAP_NEGATIVE_Y;
		this._textureSelectorDictionary[4] = gl.TEXTURE_CUBE_MAP_POSITIVE_Z;
		this._textureSelectorDictionary[5] = gl.TEXTURE_CUBE_MAP_NEGATIVE_Z;
	}

	public uploadFromArray(array: Uint8Array | Array<number>, side: number, miplevel: number = 0, premultiplied: boolean = false): void {
		if (array.length != this._size * this._size * 4)
			throw new Error('Array is not the correct length for texture dimensions');

		if (array instanceof Array)
			array = new Uint8Array(array);

		this._gl.bindTexture(this._gl.TEXTURE_CUBE_MAP, this._glTexture);
		this._gl.pixelStorei(this._gl.UNPACK_PREMULTIPLY_ALPHA_WEBGL, premultiplied);
		this._gl.texImage2D(this._textureSelectorDictionary[side], miplevel, this._gl.RGBA, this._size, this._size, 0, this._gl.RGBA, this._gl.UNSIGNED_BYTE, array);
		this._gl.bindTexture(this._gl.TEXTURE_CUBE_MAP, null);
	}

	public uploadCompressedTextureFromArray(array: Uint8Array, offset: number /*uint*/, async: boolean = false): void {

	}

	public get size(): number {
		return this._size;
	}

	public generateMipmaps(): void {
		this._gl.bindTexture(this._gl.TEXTURE_CUBE_MAP, this._glTexture);
		this._gl.generateMipmap(this._gl.TEXTURE_CUBE_MAP);
		//this._gl.bindTexture( this._gl.TEXTURE_CUBE_MAP, null );
	}
}