WebGPURenderer: wrong update of compressed textures

[vlucendo]

Description

Updating compressed textures with the contents of others of different formats by copying them fails sometimes and have visual errors, but the same functionality works fine in WebGL. This functionality is often used when creating an empty texture while the asset loads, and then copying the loaded data to it once it's available.

I created a couple of fiddles with webgpu and webgl to compare. Webgpu only updates 3 times instead of 4 and displays a wrong texture.

Reproduction steps

(see fiddles)

• Create an empty compressed texture
• Update it by copying others

Code

See fiddles

Live example

• WebGPU fiddle
• WebGL fiddle

Screenshots

No response

Version

r170

Device

Desktop

Browser

Chrome

OS

Windows

[vlucendo]

I updated the links to show an example of textures displaying wrong as well.