WebGLRenderer Async Methods in Three.js

Based on the provided context, there isn't a direct equivalent to computeAsync for the WebGLRenderer in Three.js. However, WebGLRenderer does offer some asynchronous methods that might help you achieve similar functionality:

Available Async Methods in WebGLRenderer

1. compileAsync(scene, camera, targetScene)

   • This is an asynchronous version of the .compile() method
   • Returns a Promise that resolves when the given scene can be rendered without unnecessary stalling due to shader compilation
   • Uses the KHR_parallel_shader_compile WebGL extension

2. readRenderTargetPixelsAsync(renderTarget, x, y, width, height, buffer, activeCubeFaceIndex)

   • Asynchronous, non-blocking version of .readRenderTargetPixels()
   • Returns a promise that resolves once the buffer data is ready to be used

Implementation Example

For WebGLRenderer, you could initialize it like this:

JAVASCRIPTCopied
const renderer = new THREE.WebGLRenderer({ 
  antialias: true
  // Note: trackTimestamp and forceWebGL are WebGPURenderer-specific options
});

// If you need to compile shaders asynchronously:
renderer.compileAsync(scene, camera).then(() => {
  // Scene is ready to render without stalling
  renderer.render(scene, camera);
});

Note that the WebGLRenderer doesn't have a direct equivalent to the computeAsync method you're using with WebGPURenderer. The computeAsync method appears to be specific to WebGPU for running compute shaders.

If you're trying to perform GPU computations in WebGL2, you might need to look into alternative approaches such as using render targets or exploring WebGL2 compute capabilities through custom shaders.