GPUQueue

Instance properties

label

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

Instance methods

copyExternalImageToTexture()

Copies a snapshot taken from a source image, video, or canvas into a given GPUTexture.

onSubmittedWorkDone()

Returns a Promise that resolves when all the work submitted to the GPU via this GPUQueue at the point the method is called has been processed.

submit()

Schedules the execution of command buffers represented by one or more GPUCommandBuffer objects by the GPU.

writeBuffer()

Writes a provided data source into a given GPUBuffer.

writeTexture()

Writes a provided data source into a given GPUTexture.

Examples

In our basic render demo, we define some vertex data in a Float32Array that we'll use to draw a triangle:

const vertices = new Float32Array([
  0.0, 0.6, 0, 1, 1, 0, 0, 1, -0.5, -0.6, 0, 1, 0, 1, 0, 1, 0.5, -0.6, 0, 1, 0,
  0, 1, 1,
]);

To use this data in a render pipeline, we need to put it into a GPUBuffer. First we'll create the buffer:

const vertexBuffer = device.createBuffer({
  size: vertices.byteLength, // make it big enough to store vertices in
  usage: GPUBufferUsage.VERTEX | GPUBufferUsage.COPY_DST,
});

To get the data into the buffer we can use the writeBuffer() function, which lets the user agent determine most efficient way to copy the data over:

device.queue.writeBuffer(vertexBuffer, 0, vertices, 0, vertices.length);

Later on, a set of commands is encoded 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()]);

Specifications

Browser compatibility

See also

• The WebGPU API