WebGPU on the Raspberry Pi 4

I wonder if there is hope for WebGPU in a web browser running on the Raspberry Pi 4?

There is no Vulkan driver available, nor is there OpenGL. Instead, there is an OpenGL ES 3.1 driver (compute shaders) in the final stages of development, and work has begun to support OpenGL ES 3.2 (geometry shaders). So my question is whether OpenGL ES 3.1/3.2 is good enough to support WebGPU?

https://www.raspberrypi.org/blog/vc4-and-v3d-opengl-drivers-for-raspberry-pi-an-update/

Mozilla's gfx-rs/wgpu project says nothing about OpenGL ES 3.1 support. I do see some kind of OpenGL support in the underlying gfx-hal library, but nothing is being promised for wgpu. So maybe there will be no Firefox support.

Google's Dawn project says "OpenGL as best effort where available". There is no mention of version numbers, though. Will Dawn support OpenGL ES 3.1/3.2?