custom_post_processing crashes with bloom added

[meowette]

Bevy version and features

bevy commit ea8f22e (latest as of report)
also tested in 0.17.0

Relevant system information

tested on windows 11 23h2 and cachyos 0.18.3 (kernel: 6.17.1-2-cachyos)

rustc 1.90.0 (1159e78c4 2025-09-14)
cargo 1.90.0 (840b83a10 2025-07-30)

AdapterInfo { name: "NVIDIA GeForce RTX 3060 Ti", vendor: 4318, device: 9353, device_type: DiscreteGpu, driver: "NVIDIA", driver_info: "580.95.05", backend: Vulkan }

What you did

Added Bloom::default() to the camera in the custom_post_processing example, even a minimal shader causes a crash.

bevy/examples/shader_advanced/custom_post_processing.rs

Line 302 in ea8f22e

commands.spawn((

commands.spawn((
    Camera3d::default(),
    Transform::from_translation(Vec3::new(0.0, 0.0, 5.0)).looking_at(Vec3::default(), Vec3::Y),
    Camera {
        clear_color: Color::WHITE.into(),
        ..default()
    },
    Bloom::default(),
    // Add the setting to the camera.
    // This component is also used to determine on which camera to run the post processing effect.
    PostProcessSettings {
        intensity: 0.02,
        ..default()
    },
));

shader i also tested with

#import bevy_core_pipeline::fullscreen_vertex_shader::FullscreenVertexOutput

@fragment
fn fragment(in: FullscreenVertexOutput) -> @location(0) vec4<f32> {
    return vec4<f32>(
        0.0,
        0.0,
        0.0,
        1.0
    );
}

What went wrong

crashes almost instantly when shader gets loaded

Additional information

2025-10-12T17:04:20.968842Z ERROR wgpu::backend::wgpu_core: Handling wgpu errors as fatal by default

thread '<unnamed>' panicked at /home/fee/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/wgpu-26.0.1/src/backend/wgpu_core.rs:2391:18:
wgpu error: Validation Error

Caused by:
  In a CommandEncoder
    In a pass parameter
      Encoder is invalid


note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
Encountered a panic in system `Enable the debug feature to see the name`!

thread '<unnamed>' panicked at /home/fee/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/wgpu-hal-26.0.4/src/vulkan/instance.rs:192:58:
Trying to destroy a SurfaceAcquireSemaphores that is still in use by a SurfaceTexture

full crashlog: https://pastebin.com/raw/sbQ8tR0c

[ChristopherBiscardi]

On my phone so I don't have links ready, but bloom adds HDR and iirc the default texture used isn't the HDR one.

[ChristopherBiscardi]

confirmed that this is what was happening here. The fix is to use the hdr texture format if you're using HDR features on the camera.

// format: TextureFormat::bevy_default(),
format: ViewTarget::TEXTURE_FORMAT_HDR,

I've put up a PR saying as much in the comments of the example

[meowette]

thank you for clarifying that! ^-^