Module systems 

Invariant systems of the Data layer (Substrate Pass).

Each module here defines one crate::ecs::DataSystemRegistration that gets dispatched by the engine in its declared crate::ecs::TickPhase. The dispatcher in khora-control discovers them automatically through inventory; nothing else needs to know about a new system except its own file.

Re-exports

pub use transform_propagation::transform_propagation_system;

Modules

asset_eviction

GPU asset eviction — reclaims orphaned GPU meshes/materials each frame.

audio_playback_writeback

Drains the AudioPlaybackWriteback slot the SpatialMixingLane wrote into during the CLAD descent and applies the per-source playback-state updates back to AudioSource components.

capture_previous_transform

Snapshots each simulated body’s world-space transform into the engine’s [TransformInterpolation] store so the render path can interpolate between the prior and current GlobalTransform for smooth motion at any frame rate.

ecs_maintenance

ECS maintenance — drains the queued cleanup / vacuum work each frame.

gpu_material_sync

CPU → GPU material sync — uploads each entity’s material (uniforms + PBR textures + group-2 bind group) to the device cache and tags the entity with HandleComponent<GpuMaterial>.

gpu_mesh_sync

CPU → GPU mesh sync — uploads any newly-spawned HandleComponent<Mesh> to the device cache and tags the entity with HandleComponent<GpuMesh>.

ibl_bake

One-time IBL environment bake, wired as a data-driven system.

physics_debug_extraction

Physics debug-render extraction — opt-in DataSystem.

physics_world_writeback

Pulls per-body transforms, kinematic results, and collision events from the physics provider back into the ECS World.

transform_propagation

Transform propagation — Transform → GlobalTransform for the scene hierarchy. Runs in TickPhase::PostSimulation, after app.update has mutated local Transforms and before extraction reads GlobalTransform.