Pipelined Rendering: App crashes when there is no camera

[cart]

Crashes with the following:

Oct 28 16:01:38.927 ERROR present_frames: wgpu_core::present: No work has been submitted for this frame    
Oct 28 16:01:38.932 ERROR present_frames: wgpu_core::present: No work has been submitted for this frame    
thread 'main' panicked at 'Failed to acquire next swap chain texture!: Timeout', pipelined/bevy_render2/src/view/window.rs:151:24

We should choose one of the following behaviors:

1. Don't call "present" when there is nothing to draw for a camera
2. Run a "clear color" pass anyway.

We should also print an error (once) when a camera is missing.

[louiidev]

Hey @cart, can I pick this one up?

[mockersf]

Not Cart, but yes please do! Be sure to fix it in pipelined-rendering branch, in pipelined/bevy_render2, not in crates/bevy_render

[louiidev]

Not Cart, but yes please do! Be sure to fix it in pipelined-rendering branch, in pipelined/bevy_render2, not in crates/bevy_render

thanks for the heads up

[cart]

Yup definitely feel free to pick this up. Sorry for the delay!

[Davier]

This panic also occurs for me in the pipelined_texture_atlas when compiled in debug mode (even though there is a camera). I believe it's fine in release mode because the texture is loaded in less than a few frames, so that there is something to draw.