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Showing content from http://developer.mozilla.org/en-US/docs/Web/API/GPUDevice/createCommandEncoder below:

GPUDevice: createCommandEncoder() method - Web APIs

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The createCommandEncoder() method of the GPUDevice interface creates a GPUCommandEncoder, used to encode commands to be issued to the GPU.

createCommandEncoder()
createCommandEncoder(descriptor)

descriptor Optional

An object containing the following properties:

label Optional

A string providing a label that can be used to identify the object, for example in GPUError messages or console warnings.

A GPUCommandEncoder object instance.

In our basic render demo, several commands are recorded via a GPUCommandEncoder created via createCommandEncoder():

// …

// Create GPUCommandEncoder
const commandEncoder = device.createCommandEncoder();

// Create GPURenderPassDescriptor to tell WebGPU which texture to draw into, then initiate render pass
const renderPassDescriptor = {
  colorAttachments: [
    {
      clearValue: clearColor,
      loadOp: "clear",
      storeOp: "store",
      view: context.getCurrentTexture().createView(),
    },
  ],
};

const passEncoder = commandEncoder.beginRenderPass(renderPassDescriptor);

// Draw a triangle
passEncoder.setPipeline(renderPipeline);
passEncoder.setVertexBuffer(0, vertexBuffer);
passEncoder.draw(3);

// End the render pass
passEncoder.end();

// …

The commands encoded by the GPUCommandEncoder are recoded into a GPUCommandBuffer using the GPUCommandEncoder.finish() method. The command buffer is then passed into the queue via a submit() call, ready to be processed by the GPU.

device.queue.submit([commandEncoder.finish()]);

Note: Study the WebGPU samples to find more command encoding examples.

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