detect-webgl.js

const canvas = document.createElement("canvas");
const gl = canvas.getContext("webgl") || canvas.getContext("experimental-webgl");
if (gl) {
  const debugInfo = gl.getExtension("WEBGL_debug_renderer_info");
  if (debugInfo) {
    const renderer = gl.getParameter(debugInfo.UNMASKED_RENDERER_WEBGL);
    console.log("WebGL renderer:", renderer);
    // If renderer string contains "SwiftShader" or "Software", hardware acceleration may be disabled.
  } else {
    console.log("WEBGL_debug_renderer_info not available.");
  }
} else {
  console.log("WebGL not supported.");
}