GPUCommandEncoder.clearBuffer.https.html

<!DOCTYPE html>
<html>
<head>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
</head>
<body>
<script>
function optimizedMethodCall(commandEncoder, buffer, offset, size) {
    commandEncoder.clearBuffer(buffer, offset, size);
}

function test(t, hotLoop, commandEncoder, buffer, offset, size) {
  try {
    hotLoop(1, commandEncoder, buffer, offset, size);
  } catch(e) {
    assert_true(e instanceof TypeError);
    return;
  }
  assert_unreached("A TypeError should be thrown.");
}

promise_test(async t => {
  const adapter = await navigator.gpu.requestAdapter();
  assert_true(adapter instanceof GPUAdapter, 'Failed to request WebGPU adapter');
  const device = await adapter.requestDevice();
  assert_true(device instanceof GPUDevice, 'Failed to request WebGPU device');

  const encoder = device.createCommandEncoder();

  const buffer = device.createBuffer({
    size: 8,
    usage: GPUBufferUsage.COPY_SRC | GPUBufferUsage.COPY_DST,
  });

  function hotLoop(count, commandEncoder, buffer, offset, size) {
    for (let i = 0; i < count; ++i) {
      optimizedMethodCall(commandEncoder, buffer, offset, size);
    }
  }
  hotLoop(100, encoder, buffer, 4, 4);

  // Wait a bit for V8 to optimize. Then call again with an out-of-bounds value.
  // An exception should be thrown.
  await new Promise(resolve => t.step_timeout(resolve, 50));

  // kJSMaxInteger = 0x20000000000000 - 1;
  test(t, hotLoop, encoder, buffer, 0x20000000000000, 4);
  test(t, hotLoop, encoder, buffer, 4, 0x20000000000000);
});
</script>
</body>
</html>
chromium/third_party/blink/web_tests/wpt_internal/webgpu/fast_api/GPUCommandEncoder.clearBuffer.https.html
