sky/index.html at main · cloudsbelow/sky · GitHub

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<!doctype html>

<html>
  <head>
    <meta charset="utf-8">
    <title>WebGPU</title>
    <style>
      .debugTab {
        position:absolute;
        top: -21px;
        height: 20px;
        left: 0px;

        display: flex;
        flex-direction: row;
        padding-left: 20px;
        border: 1px solid white;
      }
      .debugTab div {
        background-color: lightgray;
        width:30px;
        text-align: center;
        margin:1px 1px 1px 0px;
      }
    </style>
  </head>
  <body style="background-color:#121c25">
    <div>
      <canvas width="720" height="480" style="border:1px solid white" id="cmain"></canvas>
    </div>
    <div id="debugWrapper"></div>

    <script src="util/verbose.js"></script>
    <script src="util/debugCanv.js"></script>
    <script src="util/util.js"></script>
    <script src="util/noise.js"></script>

    <script src="modules/sky.js"></script>

    <script src="passes/atm.js"></script>
    <script src="passes/test.js"></script>
    <script>
let canvasFormat = null;
let bgs={};
let objs={};
let wgsl={};
let vals={};

function start(callback){
  const canvas = document.getElementById("cmain");
  if (!navigator.gpu) {
    throw new Error("WebGPU not supported on this browser.");
  }
  navigator.gpu.requestAdapter().then((adapter)=>{
    if (!adapter) {
      throw new Error("No appropriate GPUAdapter found.");
    }
    adapter.requestDevice().then((device)=>{
      const context = canvas.getContext("webgpu");
      canvasFormat = navigator.gpu.getPreferredCanvasFormat();
      context.configure({
        device: device,
        format: canvasFormat,
      });
      objs.device=device;
      callback(device, context, canvas);
    });
  });
}

function init(device, context, canvas){
  const gSky = skyFn(device, true);

  const camUnif = device.createBuffer({
    label: "Camera Uniform",
    size: 16*(4*2+1),
    usage: GPUBufferUsage.UNIFORM | GPUBufferUsage.COPY_DST,
  });
  bgs.cam = c_bg(c_bgl(device, "camera bgl", [{r:"b"}]),
    "camera bg", [{buffer:camUnif}]);

  const noiseTex = gNoise(device, /*wgsl*/`
    vec4f(
      remap(grad3tf(c/32,d/32,vec3u(0,0,0),7),-1,1,
            1-vorn3tf(c/32,d/32,vec3u(0,0,0)),1),
      1-vorn3tf(c/32,d/32,vec3u(0,0,0)),
      1-vorn3tf(c/16,d/16,vec3u(0,0,0)),
      1-vorn3tf(c/8,d/8,vec3u(0,0,0)),
    ).xyzw
  `, [128,128,128], "rgba8unorm");
  //const tPipe = mTestPipe(device, context, canvas, noiseTex);
  const mSky = mSkyPipe(device, context, canvas);

  let frameInSec = 0;
  let oldSec = Date.now();
  vals.szen = 0.1;
  const frame = ()=>{
    frameInSec++;
    if(Date.now()-oldSec>1000){
      if(frameInSec<25) console.log(frameInSec);
      frameInSec = 0;
      oldSec = Date.now();
    }
    c_upd();
    device.queue.writeBuffer(camUnif, 0, b_cc(
      m4_pers(_cam),
      m4_invpersl(_cam),
      (Date.now()/10000)%1
    ));
    setSunPos(device, Math.max(10,_cam.loc[1]),vals.szen??Date.now()/5000);

    const encoder = device.createCommandEncoder();
    gSky(encoder);
    mSky(encoder);
    device.queue.submit([encoder.finish()]);

    requestAnimationFrame(frame);
  }
  requestAnimationFrame(frame);
}

start(init);
    </script>
  </body>
</html>


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