Struct GpuBreakdown 

pub struct GpuBreakdown {
    pub scene_ms: f32,
    pub shadow_ms: f32,
    pub oit_ms: f32,
    pub post_ms: f32,
    pub cull_ms: f32,
}

Per-pass split of GPU frame time, measured with TIMESTAMP_QUERY.

Each field is the GPU duration of one render pass in milliseconds, captured with timestamp queries around the pass. A field is 0.0 when that pass did not run this frame (for example shadow_ms when shadows are off or oit_ms when nothing transparent is drawn) or when the backend does not support TIMESTAMP_QUERY (the same condition that leaves FrameStats::gpu_frame_ms at None).

These passes are submitted in separate command buffers but resolved together, so the values are comparable. Like gpu_frame_ms, they lag one frame behind due to async readback. The passes measured here do not cover every GPU pass (decals, scatter, bloom, depth of field, and the final overlays are not split out), so the fields do not sum to the full frame GPU time; treat the remainder as those un-instrumented passes plus present.

Fields

scene_ms: f32

Main opaque HDR scene pass. This is the same span as FrameStats::gpu_frame_ms.

shadow_ms: f32

Directional shadow depth pass (all cascades rendered into the atlas).

oit_ms: f32

Order-independent transparency accumulation pass.

post_ms: f32

Tone-map and resolve pass that writes the final LDR image.

cull_ms: f32

Main-camera GPU cull dispatch: the cull_instances + write_indirect_args compute passes that produce the indirect draw args. 0.0 when GPU culling is off or the scene has no instanced batches. Shadow-cascade culls are not included here. Useful for checking whether the cull pass costs more than it saves on a given scene.

Trait Implementations

impl Clone for GpuBreakdown

fn clone(&self) -> GpuBreakdown

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for GpuBreakdown

impl Debug for GpuBreakdown

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for GpuBreakdown

fn default() -> GpuBreakdown

Returns the “default value” for a type.