WebGL1Renderer now faster than WebGLRenderer after browser update

Hi!

I was using Three.js this month for testing and everything was fine.

After I update Brave, today, all my code was running really slow, from 59 fps to 14-15 fps The issue happened in both of the video cards in the notebook:

• Intel HD Graphics 630 1536 MB
• Radeon Pro 560 4 GB

Tried a lot of tests:

• Updated r138 to r139: still slow
• Put just 4 objects in scene: still slow
• Changed WebGLRenderer to WebGL1Renderer: got speed back!

The renderer init code before: const renderer = new THREE.WebGLRenderer({ antialias: true, powerPreference: "high-performance" });

This is what the renderer init code looks now: const renderer = new THREE.WebGL1Renderer({ antialias: true, powerPreference: "high-performance" });

Maybe it’s a Chromium 99 vs 100 issue? Can try to test in real Chrome browser and supply a full source code with different models if needed

To Reproduce

Brave macOS version with the WebGLRenderer slow and WebGL1Renderer fast: Version 1.37.109 Chromium: 100.0.4896.60 (Official Build) (x86_64) Download link: https://github.com/brave/brave-browser/releases/tag/v1.37.109

Brave macOS version with both WebGLRenderer and WebGL1Renderer fast: Version 1.36.117 Chromium: 99.0.4844.74 (Official Build) (x86_64) Download link: https://github.com/brave/brave-browser/releases/tag/v1.36.117

Platform:

• Device: Desktop
• OS: macOS (12.3 (21E230))
• Browser: Chromium based
• Three.js version: r138 and r139

[Mugen87]

Closing. This issue can’t be fixed in three.js.

I suggest you report the issue at https://bugs.chromium.org/p/chromium/issues/list or continue the discussion at https://github.com/brave/brave-browser/issues/22030.

[LeviPesin]

This appears to be some other Chromium 100 bug, not https://github.com/brave/brave-browser/issues/22030.