WebGPURenderer with WebGPU Backend: Clear color is not set correctly

[WestLangley]

Description

Clear Color is not set correctly when clear alpha < 1.

Compare WebGPURenderer with both WebGLRenderer and WebGPURenderer/WebGLBackend. The latter two appear to render the same, and I think they are correct.

Reproduction steps

Set clear alpha to less than 1.

Code

See fiddles.

Live example

WebGLRenderer (dev): https://jsfiddle.net/ofyu03vc/

WebGPURenderer (dev): https://jsfiddle.net/fbk0d8s9/

Screenshots

No response

Version

r169dev

Device

Desktop

Browser

Chrome

OS

MacOS