GPUDeviceLostInfo

Limited availability

This feature is not Baseline because it does not work in some of the most widely-used browsers.

Secure context: This feature is available only in secure contexts (HTTPS), in some or all supporting browsers.

Note: This feature is available in Web Workers.

The GPUDeviceLostInfo interface of the WebGPU API represents the object returned when the GPUDevice.lost Promise resolves. This provides information as to why a device has been lost.

See the GPUDevice.lost page for more information about "lost" state.

Instance properties

message Read only

A string providing a human-readable message that explains why the device was lost.

reason Read only

An enumerated value that defines the reason the device was lost in a machine-readable way.

Examples

js
async function init() {
  if (!navigator.gpu) {
    throw Error("WebGPU not supported.");
  }
  const adapter = await navigator.gpu.requestAdapter();
  if (!adapter) {
    throw Error("Couldn't request WebGPU adapter.");
  }
  // Create a GPUDevice
  let device = await adapter.requestDevice(descriptor);
  // Use lost to handle lost devices
  device.lost.then((info) => {
    console.error(`WebGPU device was lost: ${info.message}`);
    device = null;
    if (info.reason !== "destroyed") {
      init();
    }
  });
  // …
}

Specifications

Specification
WebGPU
# gpudevicelostinfo

Browser compatibility

See also