Major visual artifacts when running the pipelined renderer examples

[setzer22]

Bevy version

Using the main branch, as of today: f512c853d7e5bcf91c8d411aa4c5ae3058220da8

Operating system & version

OS: Manjaro (rolling), kernel version: 5.13.19-2, using the amdgpu open source driver.
GPU: Radeon RX 6600XT

What you did

1. Clone latest main branch, after the pipelined renderer has been merged.
2. Compile and run one of the examples, e.g. cargo run --example 3d_scene_pipelined.

What you expected to happen

A regular-looking 3d scene would be visible on screen.

What actually happened

The 3d scene shown was full of visual artifacts and incorrect colors:

Additional information

I have verified that other wgpu-based applications work fine on my machine by testing the examples in https://github.com/gfx-rs/wgpu

[mockersf]

@superdump could it be related to #3186?

[setzer22]

I have tested this on two other machines:

• On a laptop with same OS, but with a Amd Vega 7 integrated graphics, I get very similar artifacts.
• On a different laptop, also same OS, but with a Nvidia 1050Ti (mobile) GPU, I didn't get any artifacts.

[superdump]

@superdump could it be related to #3186?

Yup. Certainly could be given the bug fixed by that simply means that it reads the shadow map value from uninitialised memory.

[superdump]

Or it could be just a holiday disco ball mode. :)

[mockersf]

#3186 has been merged, could you retry with latest main?

[setzer22]

Looks like it's fixed 👍 Thanks for the quick response!