GPU Support

[milesway]

Hi,

I currently use const { createCanvas } = require('node-canvas-webgl/lib') to create a PNG screenshot image of whatever drawing on the canvas, using:

const canvas = createCanvas(width, height);
const renderer = new THREE.WebGLRenderer({ canvas });

const imageStream = canvas.createPNGStream({
        bufsize: 4096,
        compressionLevel: compressionLevel,
        progressive: false
      });
      
const chunks = [];
      
imageStream.on('data', chunk => {
     chunks.push(chunk);
     });

However, I realize that all computing is done on the CPU, and it is extremely resource-consuming.

My code runs well without xvfb-run by using the X server on a virtual display, which should give GPU access to all node packages.

Is there anything to do to put the computing on GPU, not CPU? Or is it supported, but my system configuration is somehow blocking it from accessing GPU?

Thanks!