Large plane / object causing drop in performance, especially on mobile

[dror-g]

Bevy version

0.12 / 0.12.1

Relevant system information

Rust 1.73 and 1.76.0-nightly, build on Ubuntu 22.04, run on Android 9, 12, 14.

Issue exists on:
AdaptAdapterInfo { name: "ANGLE (Qualcomm, Adreno (TM) 618, OpenGL ES 3.2)", vendor: 20803, device: 0, device_type: IntegratedGpu, driver: "", driver_info: "", backend: [Gl | Vulkan] }

AdapterInfo { name: "Mali-G710", vendor: 5045, device: 2824994820, device_type: IntegratedGpu, driver: "Mali-G710", driver_info: "v1.r43p0-01eac0.ff5c643eda65d3f5ba9886fdffb12673", backend: Vulkan }

AdapterInfo { name: "Mali-T720", vendor: 5045, device: 0, device_type: IntegratedGpu, driver: "", driver_info: "", backend: [Gl | Vulkan] }

Works better, but still exists on:
AdapterInfo { name: "Intel(R) HD Graphics", vendor: 32902, device: 0, device_type: IntegratedGpu, driver: "", driver_info: "", backend: [Gl | Vulkan] }

AdapterInfo { name: "NVIDIA GeForce GTX 1650 with Max-Q Design", vendor: 4318, device: 8081, device_type: DiscreteGpu, driver: "NVIDIA", driver_info: "545.23.08", backend: [Gl | Vulkan]}

What you did

Created a simple scene with a large(-ish) Mesh - Plane or big Box with size 128, to serve as ground, camera looking at objects placed on it.
many_foxes or animated_fox will cause issue as well.

What went wrong

Got terrible performance on mobile devices. i.e:
Samsung Galaxy A71, Qualcomm, Adreno 618:
2 fps on wasm builds, 11 fps on aarch64-linux-android apk.

Google Pixel 7a, Mali-G710:
11 fps on wasm builds, 30 fps on aarch64-linux-android apk.

Laptop with Nvidia / Intel HD was also affected, but to a smaller degree:
100 fps with plain, 300+ fps without it.

This is with a single DirectionalLight with shadows_enabled: false.

Workaround

Problem fixed by hiding Plane using visibility: Visibility::Hidden.
now getting 100+ fps on android, 300+ on laptop.

Also mitigated somewhat by leaving Plane visible, but setting StandardMaterial { unlit: true }.
Gets me 40 fps on android.

Additional information

I couldn't understand why I'm getting such poor performance until accidentally set the camera to negative Y and looked at plane from below and suddenly fps was fine..

I think it is related to issue #6542. very similar. perhaps that issue is not limited to AMD gpus.
Issue #7456 might also be related.

It might be that the problem exists on multiple GPUs, mobile or otherwise, and simply unnoticed on PC/Laptop.

To reproduce attempt to open a wasm or android build with a Plane / Box of size 128 and above and compare fps with it visible and hidden.

Thank you!!

[irate-devil]

Duplicate of #10338. Thanks for the extra info :)