webgl2-copytexsubimage2d-high-power-switch-does-not-crash.html

<html>
<head>
<script type="text/javascript">
let canvas;
let gl;
let tex;
let msrb;
let contextLost = false;
const sz = 16;  // Match the canvas' sizes below.

function send(str) {
  if (window.domAutomationController) {
    window.domAutomationController.send(str);
  } else {
    console.log(str);
  }
}

function initTexture() {
  tex = gl.createTexture();
  gl.bindTexture(gl.TEXTURE_2D, tex);
  gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA8, sz, sz, 0, gl.RGBA, gl.UNSIGNED_BYTE, null);
}

function animate() {
  // Copy from the framebuffer to the texture regardless of whether the context was lost.
  gl.copyTexSubImage2D(gl.TEXTURE_2D, 0, 0, 0, 0, 0, sz, sz);
  requestAnimationFrame(animate);
}

function onLoad() {
  canvas = document.getElementById("canvas1");
  canvas.addEventListener('webglcontextlost', function(e) {
    console.log('Context lost');
    e.preventDefault();
    contextLost = true;
  }, false);
  canvas.addEventListener('webglcontextrestored', function(e) {
    contextLost = false;

    // Wait a second before telling the harness that the test succeeded.
    setTimeout(() => { send("SUCCESS"); }, 1000);
  }, false);
  gl = canvas.getContext('webgl2', {powerPreference: "low-power"});
  initTexture();
  msrb = gl.createRenderbuffer();
  gl.bindRenderbuffer(gl.RENDERBUFFER, msrb);
  gl.renderbufferStorageMultisample(gl.RENDERBUFFER, 2, gl.RGBA8, 16, 16);
  gl.bindRenderbuffer(gl.RENDERBUFFER, null);
  let err = gl.getError();
  if (err != 0) {
    console.log("Error " + err + " allocating multisampled renderbuffer");
    send("FAILED");
    return;
  }
  requestAnimationFrame(animate);
  // Wait a second before telling the harness to switch to the high-performance GPU.
  setTimeout(() => { send("LOADED"); }, 1000);
}

function runTest() {
  let c2 = document.getElementById("canvas2");
  let gl = c2.getContext('webgl2', {powerPreference: "high-performance"});
}
</script>
</head>
<body onload="onLoad()">
<canvas id="canvas1" width="16px" height="16px"></canvas>
<canvas id="canvas2" width="16px" height="16px"></canvas>
<canvas id="canvas2d" width="16px" height="16px"></canvas>
</body>
</html>
chromium/content/test/data/gpu/webgl2-copytexsubimage2d-high-power-switch-does-not-crash.html
