Module shadows_lane 

Shadow lanes for [ShadowAgent].

Per the SAA lane model, each lane in this module is a distinct quality strategy, all implementing the same shadow domain:

• StandardShadowsLane — full quality (2048² atlas + 512² cube)
• MediumShadowsLane — same algorithm, half resolution (1024² + 256²)
• LowResShadowsLane — same algorithm, quarter resolution (512² + 128²)

All produce identical output types (ShadowGpuBindings + ShadowEntries); lit consumer lanes never need to know which one ran. The agent picks one per frame via apply_budget.

Shared infrastructure (atlas creation, pass recording, draw-cmd building) lives in algo as free functions that take dimensions as parameters — never as a config struct injected by the agent.

Modules

algo

Shadow rendering algorithm — free functions shared by every quality tier (StandardShadowsLane, LowResShadowsLane, future variants).

Structs

LowResShadowsLane

Low-resolution shadows: 512² × 4-layer 2D atlas + 128² × 4-cube cube atlas. Same algorithm and output types as super::StandardShadowsLane; just lower-resolution textures — VRAM ≈ 1.5 + 0.25 MiB instead of 64 + 24 MiB.

MediumShadowsLane

Medium-resolution shadows: 1024² × 4-layer 2D atlas + 256² × 4-cube cube atlas. Same algorithm and output types as super::StandardShadowsLane; half the per-side resolution — VRAM ≈ 16 + 6 MiB instead of 64 + 24 MiB.

StandardShadowsLane

Full-quality shadows: 2048² × 4-layer 2D atlas + 512² × 4-cube cube atlas. Drives the canonical CSM / spot perspective / 6-pass point pipeline; publishes a [khora_data::render::ShadowGpuBindings] bundle plus per-light entries into the per-frame lane context.

Constants

LOW_RES_STRATEGY_NAME

Stable strategy name advertised to the agent / GORNA.

MEDIUM_STRATEGY_NAME

Stable strategy name advertised to the agent / GORNA.

STANDARD_STRATEGY_NAME

Stable strategy name advertised to the agent / GORNA.