GPU: getPreferredCanvasFormat() method

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The getPreferredCanvasFormat() method of the GPU interface returns the optimal canvas texture format for displaying 8-bit depth, standard dynamic range content on the current system.

This is commonly used to provide a GPUCanvasContext.configure() call with the optimal format value for the current system. This is recommended — if you don't use the preferred format when configuring the canvas context, you may incur additional overhead, such as additional texture copies, depending on the platform.

Syntax

js
getPreferredCanvasFormat()

Parameters

None.

Return value

A string indicating a canvas texture format. The value can be rgba8unorm or bgra8unorm.

Exceptions

None.

Examples

js
const canvas = document.querySelector("#gpuCanvas");
const context = canvas.getContext("webgpu");

context.configure({
  device,
  format: navigator.gpu.getPreferredCanvasFormat(),
  alphaMode: "premultiplied",
});

Specifications

See also