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I have a Dell XPS 15 under Ubuntu 20.04 with an Intel UHD 630 and Nvidia GTX 1050 configured in "on-demand" mode. In gaming it works properly. However when I use Firefox to load this demo under the Intel GPU, I can display up to 1000 fishes at 60FPS. Under the Nvidia GPU, it fluctuates between 20 and 30FPS, even with one fish. Under chromuim-based browser it's worse and limited at 15FPS.

Thanks by advance for your answers

strike2901
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2 Answers2

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Most probably, your browser is set not to use hardware acceleration. In Chrome navigate to Menu → Settings → Advanced → System and switch on Use hardware acceleration when available.

Error404
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Serg
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You're right, gpu acceleration is disabled under on-demand mode, in both web-base (chromium and firefox). It's probably due to an incompatibility. If I run all the system under the Nvidia GPU (performance mode), then the GPU acceleration is enabled and I can go up to 15000 fishes at 60FPS . So now I know that WebGL doesn't support Nvidia Prime on-demand mode.

However I'll go back to on-demand mode because the laptop is noisy and the battery doesn't hold charge for a long time in performance mode. For many WebGL apps, the Intel GPU is enough.

Thanks for your answer

strike2901
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