WebGPU: Texture component swizzle

Category: Graphics
Type: New or changed feature
Status: Proposed (Chrome Proposed)
Intent stage: None

Summary

Functionality added to the WebGPU spec after its first shipment in a browser. Allows GPUTextureViews to rearrange or replace the color components from texture's red/green/blue/alpha channels when accessed by a shader.

Motivation

The texture component swizzle optional feature allows for efficient, flexible, and robust texture sampling in WebGPU, enabling developers to optimize performance, correct component ordering mismatches, and reuse shader code across various texture formats. https://github.com/gpuweb/gpuweb/pull/5361

Standards & signals

Specification: https://gpuweb.github.io/gpuweb/#dom-gpufeaturename-texture-component-swizzle
Firefox: No signal
Safari: Closed Without a Position
Web developers: No signals
Tracking bug: https://issues.chromium.org/issues/414312052

Explainers: https://github.com/gpuweb/gpuweb/blob/main/proposals/texture-component-swizzle.md

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