The label read-only property of the GPUComputePassEncoder interface is a string providing a label that can be used to identify the object, for example in GPUError messages or console warnings.

This can be set by providing a label property in the descriptor object passed into the originating GPUCommandEncoder.beginComputePass() call, or you can get and set it directly on the GPUComputePassEncoder object.

A string. If no label value has previously been set, getting the label returns an empty string.

Setting and getting a label via GPUComputePassEncoder.label:

const commandEncoder = device.createCommandEncoder();
const passEncoder = commandEncoder.beginComputePass();

passEncoder.label = "mycomputepassencoder";
console.log(passEncoder.label); // "mycomputepassencoder"

Setting a label via the originating GPUCommandEncoder.beginComputePass() call, and then getting it via GPUComputePassEncoder.label:

const commandEncoder = device.createCommandEncoder();
const passEncoder = commandEncoder.beginComputePass({
  label: "mycomputepassencoder",
});

console.log(passEncoder.label); // "mycomputepassencoder"

• The WebGPU API