Deferred rendering example fails on WebGL2

[DGriffin91]

Bevy main 889d88c

Tested in chrome and firefox on linux. I believe this issue can also affect webgpu or other platforms with a texture binding limit of 16. I tried it with webgpu on chrome on windows and it did run as the browser returned 48 from maxSampledTexturesPerShaderStage rather than the default of 16.

This is not a duplicate of #23627 or #23956

The deferred rendering example works as expected in firefox and chrome on linux with WebGL2 in bevy 0.18.1

AdapterInfo { name: "ANGLE (NVIDIA Corporation, NVIDIA GeForce RTX 4070 Ti SUPER/PCIe/SSE2, OpenGL ES 3.2)", vendor: 4318, device: 0, device_type: Other, device_pci_bus_id: "", driver: "", driver_info: "WebGL 2.0 (OpenGL ES 3.0 Chromium)", backend: Gl, subgroup_min_size: 4, subgroup_max_size: 128, transient_saves_memory: false }

Caused by: In Device::create_pipeline_layout 
Too many bindings of type SampledTextures in Stage ShaderStages(FRAGMENT) 
limit is 16, count was 18. Check the limit max_sampled_textures_per_shader_stage passed to Adapter::request_device

[beicause]

The deferred_rendering example on webgl2 doesn't work for me either in 0.18.1 or #23982 with DistantceFog and EnvironmentMapLight disabled.

Also DepthPrepass doesn't work on webgl2 #9710

[DGriffin91]

The 0.18 deferred rendering example is working for me on WebGL2 on:

• Windows in both Firefox and Chrome
• Linux in both Firefox and Chrome
• MacOS in Firefox, Chrome, and Safari

Re: #9710 the depth prepass does work on WebGL2 despite this warning (and has worked for a very long time). Sampling from the depth prepass doesn't work because of missing functionality in wgpu, but that's not what the the warning is about. And the deferred pass gets around this limitation by encoding the depth in the gbuffer.

Windows 11, Chrome, GTX1050

M1 Mac Mini, Safari

Arch Linux, Firefox, RTX4070

I also tested on linux building/serving 0.18.1 directly in addition to testing from the website.

[beicause]

I tested it on linux, chrome and firefox, AMD iGPU and the rendering is incorrect. However it works on my Android Chrome and Firefox. So there may be another machine-specific issue.