Texture ripper v3

Anonymous

Views 664

Visibility Private

Expires Never

Created September 2023

1

// ==UserScript==
// @name        SketchfabTextureDump_V3
// @namespace   Violentmonkey Scripts
// @match       *://*.sketchfab.com/3d-models/**
// @match       *://*.sketchfab.com/models/**
// @grant       none
// @version     0.0.3
// @author      krapnik
// @create-time 2023/7/31 22:59:46
// @license     MIT
// @run-at      document-start
// ==/UserScript==
(function () {

function addDownloadBtn() {
    let btn = document.createElement("button");
    btn.innerHTML = "download";
    btn.style.position = "absolute"
    btn.style.top = "0"
    btn.style.left = "0"
    document.body.appendChild(btn);
    btn.onclick = dumpWebGLTextureData;
  }

let webGLTextureIdx = 0;
  let webGLTextureMap = {};
  document.addEventListener("DOMContentLoaded", function () {
    var str = document.querySelector("#js-dom-data-prefetched-data").innerHTML.replace("\x3C!--", "").replace("-->", "").replaceAll("&#34;", "\"");
    var prefetchedData = JSON.parse(str);
    let context = prefetchedData.embedOptions.webgl2 ? WebGL2RenderingContext : WebGLRenderingContext;
    hookWebGLRenderingContext(context);
  }, false);

function hookWebGLRenderingContext(context) {
    //createTexture
    let glCreateTexture = context.prototype.createTexture;
    context.prototype.createTexture = function (...args) {
      let texture = glCreateTexture.apply(this, args);
      texture.name = webGLTextureIdx;
      texture.gl = this;
      webGLTextureMap[`${webGLTextureIdx}`] = texture;
      webGLTextureIdx++;
      return texture;
    };

//bindTexture
    let glBindTexture = context.prototype.bindTexture;
    context.prototype.bindTexture = function (...args) {
      let target = args[0], texture = args[1];
      if (texture) {
        texture.target = target;
      }
      glBindTexture.apply(this, args);
    };

let glDeleteTexture = context.prototype.deleteTexture;
    context.prototype.deleteTexture = function (...args) {
      // do notthing
    };

//texImage
    let lstTexture;
    let glTexImage2D = context.prototype.texImage2D;
    let hasCoverTex = 0;
    let isAllTextureCover = false;
    context.prototype.texImage2D = function (...args) {
      let texture = this.getParameter(this.TEXTURE_BINDING_2D) || this.getParameter(this.TEXTURE_BINDING_CUBE_MAP);
      let argments = parseTexImage2dArgs(args);
      if (texture.target == argments.target) {
        texture.args = argments;
        let { width, height, src } = argments;
        if (
          width > MIN_TEXTURE_WIDTH &&
          height > MIN_TEXTURE_HEIGHT &&
          (width & width - 1) === 0 &&
          (height & height - 1) === 0 &&
          texture.target === this.TEXTURE_2D
        ) {
          if (src) {
            // let textureName = getFileNameByLink(src);
            texture.src = argments.src;
            lstTexture.lst = texture.name;
            hasCoverTex++;
            _log(`【origin texture cover】 total:${originTextureArr.length} count:${hasCoverTex}`);
            if (originTextureArr.length == hasCoverTex) {
              isAllTextureCover = true;
              _log('all files are ready! click the 【download】 button');
              addDownloadBtn();
            }
          }
          lstTexture = texture;
        }
      }
      glTexImage2D.apply(this, args);
    };
  }

function getNameById(uid) {
    let name;
    let texture = originTextureArr.find((t) => {
      return t.uid == uid;
    });
    if (texture) {
      name = texture.name;
    }
    return name;
  }

window.dumpWebGLTextureData = dumpWebGLTextureData;
})();

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