zig_workbench/BaseWebGPU/web.html at main · DarknessFX/zig_workbench · GitHub

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<!doctype html>
<html lang="en-us">
<head>
  <meta charset="utf-8">
  <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
  <title>BaseWebGPU</title>
  <style>
    body { width: 100vw; height: 100vh; overflow: hidden;}
    canvas { width: 100%; height: 100%; background-color: black;}
    body, canvas { margin: 0px; border: 0px; padding: 0px; };
  </style>
</head><body><script type="text/javascript">
// =====================================
const canvas = document.createElement("canvas");
canvas.setAttribute("id", "canvas");
document.body.appendChild(canvas);
// =======================================
  initWebGPU = async () => {
    // Check to ensure the user agent supports WebGPU
    if (!('gpu' in navigator)) {
      const msg = '⚠️ WebGPU is not available on this browser.';
      const pre = document.createElement('pre');
      pre.style.color = '#f00';
      pre.style.textAlign = 'center';
      pre.textContent = msg;
      document.body.appendChild(pre);
      console.error(msg);
      return false;
    }

    // disable canvas right-click
    canvas.oncontextmenu = (e) => e.preventDefault();

    // Request an adapter
    const adapter = await navigator.gpu.requestAdapter();
    if (!adapter) {
      console.error('No WebGPU adapters found.');
      return false;
    }

    // Request a device
    const device  = await adapter.requestDevice();
    device.lost.then((info) => {
      console.error(`WebGPU device was lost: ${info.message}`);
      device = null;

      if (info.reason != 'destroyed') {
        initWebGPU();
      }
    });

    // Set WebGPU device in Module
    Module.preinitializedWebGPUDevice = device;
    window.webgpuDevice = device;
    console.log("WebGPU device ready and stored as window.webgpuDevice");
    return true;
  }
  initWebGPU();
</script>{{{ SCRIPT }}}<script>
Module.onRuntimeInitialized = () => { BaseWebGPU.init(); };
</script></body></html>