Handling PostProcessingUtils Import in Three.js with Vite

You're encountering an issue with importing the GTAONode component because it depends on PostProcessingUtils which is not exported from the standard Three.js package but is available in the WebGPU version.

The Problem

The error occurs because:

1. GTAONode is importing PostProcessingUtils directly from 'three'
2. In the standard Three.js package, this export doesn't exist
3. The official examples work because they use an importmap that points 'three' to the WebGPU version

Solution for Vite

Since you're using Vite, you need to set up proper aliases in your Vite configuration to point to the WebGPU version of Three.js. Here's how you can modify your vite.config.js:

JAVASCRIPTCopied
import { defineConfig } from 'vite';
import path from 'path';

export default defineConfig({
  resolve: {
    alias: {
      'three': path.resolve(__dirname, 'node_modules/three/build/three.module.js'),
      'three/webgpu': path.resolve(__dirname, 'node_modules/three/build/three.webgpu.module.js'),
      // When importing from addons, use the WebGPU version
      'three/addons/': path.resolve(__dirname, 'node_modules/three/examples/jsm/')
    }
  }
});

Then, in your application code, you need to make sure you're importing from the WebGPU version when needed:

JAVASCRIPTCopied
// For standard Three.js components
import * as THREE from 'three';

// For WebGPU-specific components
import { ao } from 'three/addons/tsl/display/GTAONode.js';

Alternative Approach

If the above doesn't work, you might need to create a custom import for the WebGPU version:

JAVASCRIPTCopied
// Import the WebGPU version of Three.js
import * as THREE from 'three/webgpu';

// Then import the addon
import { ao } from 'three/addons/tsl/display/GTAONode.js';

Remember that version consistency is crucial - make sure all your Three.js imports are from the same version to avoid compatibility issues.