render::view::RenderLayers does not affect SpriteBundle

[lostinnowhere314]

Bevy version

0.7.0

What you did and what went wrong

I was trying to adapt the render_to_texture.rs example to a 2-d example, and the error that occured is precisely the one that the example attributes to trying to write to and use the same texture in the same draw call. I was using a SpriteBundle to render the texture being drawn to, particularly.

Example

Here's a simple example (derived from the sprite.rs example) that illustrates this:

use bevy::prelude::*;
use bevy::render::view::RenderLayers;

fn main() {
    App::new()
        .add_plugins(DefaultPlugins)
        .add_startup_system(setup)
        .run();
}

fn setup(mut commands: Commands, asset_server: Res<AssetServer>) {
    commands.spawn_bundle(OrthographicCameraBundle::new_2d())
		.insert(RenderLayers::layer(0));
    commands.spawn_bundle(SpriteBundle {
        texture: asset_server.load("branding/icon.png"),
        ..default()
    })
		.insert(RenderLayers::layer(1));
}

The sprite should not render, according to the RenderLayer documentation; however, the result is that the sprite renders anyways.

Relevant system information

Windows 10, Rust version 1.61.0

AdapterInfo { name: "Intel(R)
UHD Graphics", vendor: 32902, device: 39745, device_type: IntegratedGpu, backend: Vulkan }

[james7132]

This should (?) be fixed by #3944 or some variant of it. @Weasy666 do you have time to finish up that PR?

[infmagic2047]

This is fixed by #4007, but there is currently some performance drop with that PR.

#3944 changes sprite extracting to use ComputedVisibility, but it will be set to true if the sprite is visible on at least one camera, so it does not help here.

[james7132]

This is fixed by #4007, but there is currently some performance drop with that PR.

#3944 changes sprite extracting to use ComputedVisibility, but it will be set to true if the sprite is visible on at least one camera, so it does not help here.

Left a suggestion on how to address the perf drop. That might help make it easier to work with.