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Using the internal display with an eGPU on a macbook with an OpenGL application  

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a3244563625323
(@a3244563625323)
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April 6, 2019 10:34 am  

Can anyone tell me if it's possible to get OpenGL applications, specifically Firestorm Viewer, working on the internal display of a macbook  using an eGPU? Apparently there are scripts that can force applications to use the eGPU but it's not clear if this will work with OpenGL applications as the official support is for Metal only.

If anyone could test this I would be very grateful, don't want to shell out for one of these things if it isn't going to do what I want it for.

Pending: Add my system information and expected eGPU configuration to my signature to give context to my posts


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theitsage
(@itsage)
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April 6, 2019 4:43 pm  

It should work like other OpenGL apps. Best to have the monitor connected the eGPU. I tried it just now and checked the app's Information to prefer external GPU. You can see it's using the Radeon VII eGPU. There's load on the D500 dGPU because my monitor is connected to it.

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a3244563625323
(@a3244563625323)
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April 18, 2019 10:30 am  

@theitsage Does it run on the internal display and is performance reasonable?

Pending: Add my system information and expected eGPU configuration to my signature to give context to my posts


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theitsage
(@itsage)
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April 18, 2019 1:04 pm  

Internal display acceleration should work with macOS Mojave. The performance would depend on your system and eGPU configuration. You have to try it out yourself to determine whether it's reasonable.

Best ultrabooks for eGPU use

eGPU enclosure buying guide

94 external GPU build guides


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a3244563625323
(@a3244563625323)
New Member
Joined: 2 months ago
Posts: 3
April 18, 2019 1:08 pm  

@theitsage i don’t have an eGPU to test with, which is why i’m asking. I’ve read that internal display acceleration only works with Metal and not with OpenGL, I’d like to know if this is correct before deciding whether to buy one.

Pending: Add my system information and expected eGPU configuration to my signature to give context to my posts


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