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@tolokoban/tgd

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ToloGameDev library for WebGL2

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import { TgdEvent } from "./../event/index.js"; import { isWebglImage } from "./../types/index.js"; import { webglTextureParametersSet, } from "./../webgl/index.js"; export class TgdTexture2D { constructor(context, storage) { this.eventChange = new TgdEvent(); this._texture = null; this._width = 0; this._height = 0; const { gl } = context; this.gl = gl; this.name = `Texture2D/${TgdTexture2D.counter++}`; const texture = gl.createTexture(); if (!texture) throw new Error("Unable to create a WebGLTexture!"); this._texture = texture; this.setParams({ magFilter: "LINEAR", minFilter: "LINEAR", wrapS: "REPEAT", wrapT: "REPEAT", wrapR: "REPEAT", }); this.storage = Object.assign({ width: 1, height: 1, internalFormat: "RGBA8", levels: 1, flipY: false }, storage); gl.pixelStorei(gl.UNPACK_FLIP_Y_WEBGL, this.storage.flipY); if (typeof (storage === null || storage === void 0 ? void 0 : storage.width) === "number" && typeof (storage === null || storage === void 0 ? void 0 : storage.height) === "number") { this.resize(storage === null || storage === void 0 ? void 0 : storage.width, storage === null || storage === void 0 ? void 0 : storage.height); } } delete() { this.gl.deleteTexture(this.glTexture); } get width() { return this._width; } get height() { return this._height; } resize(width, height) { if (width === this.width && height === this.height) return; const { gl, storage } = this; this._width = storage.width = width; this._height = storage.height = height; const { internalFormat, levels } = this.storage; if (internalFormat.startsWith("COMPRESSED_")) { // We need to load an extension for that. const extension = gl.getExtension("WEBGL_compressed_texture_etc"); if (!extension) throw new Error('Your browser does not support extension "WEBGL_compressed_texture_etc" on this device!'); } this.bind(); gl.texStorage2D(gl.TEXTURE_2D, levels, gl[internalFormat], width, height); } get glTexture() { if (this._texture) return this._texture; throw new Error(`Texture "${this.name}" has been deleted!`); } bind() { this.gl.bindTexture(this.gl.TEXTURE_2D, this.glTexture); } loadBitmap(bmp, options = {}) { if (!bmp) return this; if (!isWebglImage(bmp)) { bmp.then(data => this.loadBitmap(data)).catch(error => console.error("Unable to load texture BMP:", error)); return this; } const { storage, gl } = this; const { level = 0 } = options; this._width = bmp.width; this._height = bmp.height; this.bind(); gl.texImage2D(gl.TEXTURE_2D, level, gl[storage.internalFormat], gl[figureOutCompatibleFormat(storage.internalFormat)], gl.UNSIGNED_BYTE, bmp); this.eventChange.dispatch(this); return this; } loadData(data, options) { const { level = 0, width, height, // internalFormat, // format, // offset = 0, } = options; const { gl } = this; this.bind(); gl.texImage2D(gl.TEXTURE_2D, level, gl.RGB, //gl[internalFormat], width, height, 0, gl.RGB, // gl[format], gl.UNSIGNED_BYTE, data // offset ); this.eventChange.dispatch(this); return this; } /** * * @param unit Unit to link the texture to * @param program The program that owns the uniform to update * @param uniformName The uniform that hold the texture */ activate(unit, program, uniformName) { const { gl } = this; gl.activeTexture(gl.TEXTURE0 + unit); this.bind(); if (program && uniformName) { program.uniform1i(uniformName, unit); } return this; } generateMipmap() { const { gl } = this; this.bind(); gl.generateMipmap(gl.TEXTURE_2D); return this; } setParams(parameters) { this.bind(); webglTextureParametersSet(this.gl, parameters); return this; } set textureBaseLevel(value) { const { gl } = this; this.bind(); gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_BASE_LEVEL, value); } get textureBaseLevel() { const { gl } = this; this.bind(); return gl.getTexParameter(gl.TEXTURE_2D, gl.TEXTURE_BASE_LEVEL); } set textureMaxLevel(value) { const { gl } = this; this.bind(); gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAX_LEVEL, value); } get textureMaxLevel() { const { gl } = this; this.bind(); return gl.getTexParameter(gl.TEXTURE_2D, gl.TEXTURE_MAX_LEVEL); } getParameter(parameter) { const { gl, glTexture } = this; gl.bindTexture(gl.TEXTURE_2D, glTexture); const value = gl.getTexParameter(gl.TEXTURE_2D, gl[parameter]); return value; } } TgdTexture2D.counter = 0; const COMPATIBLE_FORMATS = [ [ "RGB", new Set([ "RGB", "RGB8", "RGB565", "SRGB8", "RGB8_SNORM", "RGB565", "R11F_G11F_B10F", "RGB9_E5", "RGB16F", "R11F_G11F_B10F", "RGB9_E5", "RGB32F", "RGB16F", "R11F_G11F_B10F", "RGB9_E5", ]), ], [ "RGBA", new Set([ "RGBA", "RGBA8", "RGB5_A1", "RGBA4", "SRGB8_ALPHA8", "RGBA8_SNORM", "RGBA4", "RGB5_A1", "RGB10_A2", "RGB5_A1", "RGBA16F", "RGBA32F", "RGBA16F", ]), ], ["RG", new Set(["RG8"])], ["RED", new Set(["R8"])], ]; function figureOutCompatibleFormat(internalFormat) { for (const [format, internalFormats] of COMPATIBLE_FORMATS) { if (internalFormats.has(internalFormat)) return format; } throw new Error(`There is no compatible format for internalFormat "${internalFormat}" and type "UNSIGNED_BYTE"!`); } //# 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