Is it possible to use a WebGL texture as an image.

[angad-k]

Hey there! I am working on a rust application that uses webgl calls through the websys crate to render 3d onto the screen. I have been trying since yesterday to integrate egui/eframe in the app but am having problems with displaying the 3d scene in egui. I am rendering the 3d scene to an offscreen texture and want to use it in egui as an image - however egui takes in a TextureId while I have a WebGlTexture which I want to use. Any way I could go about doing this?

[KentaTheBugMaker]

first you should reed examples/custom_3d_glow or examples/custom_3d_three.
You should use glow functions by following reasons .

• web_sys::WebGLxxxx is not supported directly but we support it via glow.
• glow naming is much better.
• you can access glow resources via eframe.

displaying textured rectangle instead of triangle in examples.

[angad-k]

What about egui_web? It appears to be discontinued now but it seems that it was written using plain webgl in Rust. Would that be useful for my case? - or is using glow the only way to go?

[KentaTheBugMaker]

egui_web is almost used as eframe backend due to complexity.
you can same job as webgl .
but maybe restrict js related jobs.

glow painter history on web.

status	experimental	default	only one	end of egui_web
date	2021/11/4	2021/12/31	2022/3/12	2022/5/1
commit number	#868	#1020	#1356	#1545

why old webgl1/webgl2 dropped.

removed egui_web's painter code is almost same as glow painter and backported from glow painter .

alternative solution.

some day wgpu will preferred.