3D shapes example running quite slow. | Bevy | Page 1

inland shoal · 2024-01-20T06:28:20.684Z

- I do have the optimizations specified in the bevy book enabled, but I am not dynamically linking. though this is a runtime issue I believe. - I have not precisely measured the frame rate but its taking longer than a second. - I'm using the DirectX 12 backend with 8gb of ram and an integrated GPU, I have run more complex scenes with the same Integrated GPU and it ran around 50FPS, though I was not using bevy. - I have also tried compiling in release hoping its an issue with the debug build, there was no difference at all. I have directly copy pasted [the 3d shapes example](https://github.com/bevyengine/bevy/blob/main/examples/3d/3d_shapes.rs) into my main.rs file.

inland shoal Jan 20, 2024, 6:28 AM

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I do have the optimizations specified in the bevy book enabled, but I am not dynamically linking. though this is a runtime issue I believe.
I have not precisely measured the frame rate but its taking longer than a second.
I'm using the DirectX 12 backend with 8gb of ram and an integrated GPU, I have run more complex scenes with the same Integrated GPU and it ran around 50FPS, though I was not using bevy.
I have also tried compiling in release hoping its an issue with the debug build, there was no difference at all.
I have directly copy pasted the 3d shapes example into my main.rs file.

GitHub

bevy/examples/3d/3d_shapes.rs at main · bevyengine/bevy

A refreshingly simple data-driven game engine built in Rust - bevyengine/bevy

stone dawn Jan 21, 2024, 12:39 AM

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What do the wgpu logs say your graphics adapter is?

inland shoal Jan 21, 2024, 5:26 AM

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stone dawn What do the wgpu logs say your graphics adapter is?

(please ping when replying)
I'll check, gonna take a while until it compiles since im on windows

stone dawn Jan 21, 2024, 5:40 AM

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inland shoal (please ping when replying) I'll check, gonna take a while until it compiles sin...

There's been some posts about this (cargo vs rust-analyzer building with diff flags, which may be worth googling [specifically for bevy])

inland shoal Jan 21, 2024, 5:43 AM

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Interesting

inland shoal Jan 21, 2024, 5:48 AM

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stone dawn What do the wgpu logs say your graphics adapter is?

2024-01-21T05:44:10.796221Z  INFO bevy_winit::system: Creating new window "App" (0v0)
2024-01-21T05:44:19.108520Z  INFO bevy_render::renderer: AdapterInfo { name: "Microsoft Basic Render Driver", vendor: 5140, device: 140, device_type: Cpu, driver: "", driver_info: "", backend: Dx12 }
2024-01-21T05:44:31.686221Z  INFO bevy_diagnostic::system_information_diagnostics_plugin::internal: SystemInfo { os: "Windows 10 Pro", kernel: "19045", cpu: "Intel(R) Core(TM) i5-2320 CPU @ 3.00GHz", core_count: "4", memory: "7.9 GiB" }

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I don't see my gpu model anywhere

stone dawn Jan 21, 2024, 6:08 AM

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This may be your problem it looks like you’re rendering on cpu

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I don’t really use windows much, but there’s probs stuff in your power management that you’ll need to set to performance

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And or manually look for how to force your discrete GPU to run

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should see stuff like this: ```shell
2024-01-21T06:09:50.698555Z INFO bevy_render::renderer: AdapterInfo { name: "NVIDIA TITAN RTX", vendor: 4318, device: 7682, device_type: DiscreteGpu, driver: "NVIDIA", driver_info: "545.29.06", backend: Vulkan }

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obviously AMD for an amd card

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or INTEL for an intel ARC one

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etc etc

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I also do not mean to be rude or cruel, but a 10yo CPU is going to be difficult to make heavy stuff with

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(not suggesting for a moment that anyone can be so lucky as to have whatever cpu/gpu combo they want)

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just that, you may have to curb the expectations of reaching say 144fps on a AAA 3d game that you make yourself

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(on that machine)

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I have the same issue when I try to do bevy work on my 2013 macbook 😦

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it's just... almost unusable

inland shoal Jan 21, 2024, 6:31 AM

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stone dawn And or manually look for how to force your discrete GPU to run

ah, its rendering on the CPU, makes sense.
idk what discrete GPU means but if its the one you can install/upgrade then I don't have it, I have the integrated one, which I think shouldn't register as the cpu.

inland shoal Jan 21, 2024, 6:32 AM

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stone dawn I also do not mean to be rude or cruel, but a 10yo CPU is going to be difficult ...

LOL dw you were not, and you're absolutely right

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I don't really expect anything above 60FPS tbh, because that's the max fps I could consistently get on similar code (using other libs)

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and bevy 2D actually runs faster than that i believe,

inland shoal Jan 21, 2024, 6:33 AM

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stone dawn I have the same issue when I try to do bevy work on my 2013 macbook 😦

OOF

inland shoal Jan 21, 2024, 6:34 AM

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inland shoal ``` 2024-01-21T05:44:10.796221Z INFO bevy_winit::system: Creating new window "A...

holy crap it still haven't finished compiling since it started when i sent this message

stone dawn Jan 21, 2024, 6:50 AM

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yeah i think my Shadplay project is a 25min cold build on my mbp 😦

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#wrekt

inland shoal Jan 21, 2024, 7:18 AM

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linux ftw

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also rust-analyzer is as slow as I remember it being months ago

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why is that

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Also it did launch but

stone dawn Jan 21, 2024, 7:27 AM

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yeah I have that problem too 😦

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I think it's specific to vscode+windows?

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but I use helix so cannot say for sure

inland shoal Jan 21, 2024, 7:30 AM

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stone dawn I think it's specific to vscode+windows?

How did you know i was using vscode

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I'll try it on linux and see if anything changes

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also weird enough before i set it to directx12 it used the opengl backend (which the drivers of I don't have installed) but instead of failing like it used to, it started using directx12 through ANGLE

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I am not linking to angle, and I also don't have the dlls installed globally or in the project root

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idk what's going on

stone dawn Jan 21, 2024, 7:37 AM

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inland shoal How did you know i was using vscode

From the problem you were describing -- i recall reading it in bevy/general

inland shoal Jan 21, 2024, 7:37 AM

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Ah

stone dawn Jan 21, 2024, 7:38 AM

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You could try going through and disabling the lighting etc

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that should make it muccccch faster

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this one yeah? https://github.com/bevyengine/bevy/blob/main/examples/3d/3d_scene.rs

GitHub

bevy/examples/3d/3d_scene.rs at main · bevyengine/bevy

A refreshingly simple data-driven game engine built in Rust - bevyengine/bevy

inland shoal Jan 21, 2024, 7:38 AM

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yep

stone dawn Jan 21, 2024, 7:38 AM

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change the PbrBundle's to MaterialmeshBundles

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they have the same fields

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also disable the shadows

inland shoal Jan 21, 2024, 7:39 AM

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the M in mesh feels like it has to be capitalized

stone dawn Jan 21, 2024, 7:39 AM

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soz i'm on phone so probs not typing the exact thing you'll have to get outta the docs

inland shoal Jan 21, 2024, 7:39 AM

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oki

stone dawn Jan 21, 2024, 7:40 AM

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you could try disabling plugins from the Default ones too

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the syntax iirc is ...disable::<ThisPlugin>()

inland shoal Jan 21, 2024, 7:41 AM

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I see

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i am tempted to disable bevy rendering entirely and use something like bgfx

#3D shapes example running quite slow.