BoxHelper - performance issue when updating on Safari.

Description of the problem

As the title says, Safari literally chokes itself, whenever I try to update BoundingBox of model like 3DBenchy (the framerate is at 4FPS at best). I tried on different Macs (El Capitan, Sierra, High Sierra, with and without external Video Card), and there was the same problem. Funnily enough, whenever i switch to a different browser (like Firefox or Google Chrome) it works with rock solid 60FPS on the same machine. Is there anything, that could be done, or I should just go to WebKit’s bugtracker? I’ve heard, that Safari does not have hardware support for WebGL - could that be the reason for this issue? And finally - thanks for awesome work on threejs 😃

• Example If you open the console, there is “API”, that you can mess around with:
• rotate = false disables rotation of object
• updateBox = false disables update of bounding box on every frame
• helper.update() updates bounding box
• loadStl(path) loads STL file from path (I’m not sure if it works). if called without parameter, it loads default file, which is 3DBenchy.stl.

Three.js version

• r93

Browser

• Safari

OS

• macOS (El Capitan, Sierra, High Sierra)

Hardware Requirements (graphics card, VR Device, …)

• I was able to reproduce this on every graphics card, that was built in every iMac/MacBook that i had access to.

[WestLangley]

@Mugen87 Can you replicate this issue on macOS using the fiddle I posted, which is considerably simpler than the OP’s.

[damoch]

I’ve reported this to WebKit’s bugtracker -> https://bugs.webkit.org/show_bug.cgi?id=186236