bevyengine/bevy · error · DrawError

Failed to get execute view query

Error message

Failed to get execute view query

What it means

DrawError::InvalidViewQuery is returned by RenderCommandState::draw (draw.rs:336) when fetching the view entity with the RenderCommand's ViewQuery fails with QueryDoesNotMatch or AliasedMutability. The view entity is alive in the render world but does not satisfy the component/filter requirements the command declared, so the command cannot run.

Source

Thrown at crates/bevy_render/src/render_phase/draw.rs:48

        reason = "The parameters here are intentionally unused by the default implementation; however, putting underscores here will result in the underscores being copied by rust-analyzer's tab completion."
    )]
    fn prepare(&mut self, world: &'_ World) {}

    /// Draws a [`PhaseItem`] by issuing zero or more `draw` calls via the [`TrackedRenderPass`].
    fn draw<'w>(
        &mut self,
        world: &'w World,
        pass: &mut TrackedRenderPass<'w>,
        view: Entity,
        item: &P,
    ) -> Result<(), DrawError>;
}

#[derive(Error, Debug, PartialEq, Eq)]
pub enum DrawError {
    #[error("Failed to execute render command {0:?}")]
    RenderCommandFailure(&'static str),
    #[error("Failed to get execute view query")]
    InvalidViewQuery,
    #[error("View entity not found")]
    ViewEntityNotFound,
}

/// Stores all [`Draw`] functions for the [`PhaseItem`] type.
///
/// For retrieval, the [`Draw`] functions are mapped to their respective [`TypeId`]s.
pub struct DrawFunctionsInternal<P: PhaseItem> {
    pub draw_functions: Vec<Box<dyn Draw<P>>>,
    pub indices: TypeIdHashMap<DrawFunctionId>,
}

impl<P: PhaseItem> DrawFunctionsInternal<P> {
    /// Prepares all draw function. This is called once and only once before the phase begins.
    pub fn prepare(&mut self, world: &World) {
        for function in &mut self.draw_functions {
            function.prepare(world);

View on GitHub (pinned to 396ca72708)

Solutions

1. Make optional components Option<&T> / Option<&mut T> in the ViewQuery so views lacking them still match.
2. Ensure the required component is actually extracted to the render world (add it in your extract system or via RequiredComponents on the extracted view).
3. Do not share one command between phases whose views differ; queue a per-phase command whose ViewQuery matches that phase's views.
4. Handle the error by skipping the view for the frame while logging which command/view mismatched.

Example fix

// before: view query requires a component only some views have
type ViewQuery = (&'static ExtractedView, &'static CustomViewData);

// after: make it optional so non-matching views still pass the query
// (handle None inside render())
type ViewQuery = (&'static ExtractedView, Option<&'static CustomViewData>);

// Run the same view query the command will use, before rendering:
let view_ok = view_query.get_manual(&render_world, view_entity).is_ok();
if !view_ok {
    warn!("view {view_entity:?} does not match ViewQuery; skipping");
}

match render_phase.render(&mut pass, &world, view) {
    Err(DrawError::InvalidViewQuery) => warn!("view query mismatch for {view:?}"),
    Err(other) => error!("{other:?}"),
    Ok(()) => {}
}

When it happens

Trigger: A RenderCommand's associated ViewQuery requires components (e.g. ExtractedView, ViewUniformOffset, or a custom view component) that the view entity in the render world lacks, or a filter that excludes that view; self.view.get_manual(world, view) returns QueryDoesNotMatch during RenderPhase::render.

Common situations: Custom render commands shared between view types (main camera vs shadow vs prepass views) where only some carry the required component; plugins that forget to extract their view component into the render world; adding a component to ViewQuery that is attached to the camera in the main world but never extracted.

Related errors

• View entity not found
• Union types are not supported yet.
• Expected a Template type path
• Can only derive VariantDefaults for enums
• Cannot call `ReflectComponent::reflect_mut` on component {na

AI-assisted analysis of bevyengine/bevy@396ca72708 (2026-08-20). Data as JSON: /api/errors/126ef79864d9bbf3. Report an issue: GitHub.