Cast tree shadows and bake cavity ambient occlusion #93

Merged

sermuns merged 1 commit from tree-shadows into main

2026-10-20 09:29:37 +00:00

sermuns commented

2026-10-20 09:23:15 +00:00

Owner

Two cheap lighting steps: static casters for the forest, and baked cavity AO.

Trees are now instanced casters in the one static campus shadow map, and the fitted shadow box includes the forest. This adds no per-frame work: the map is still built once.
Scene vertices carry a baked AO value (new vertex attribute at location 7). An analytic floor/ceiling term darkens interior walls and circulation, where the geometry already has a vertex at the junction. Ambient light is multiplied by it; direct sun still comes from the shadow map.
Exterior facades are excluded from the cavity term because they are one full-height quad, so darkening their corners would smear a gradient across the wall. Slabs and ground have no dense vertices for a contact term. The raycast bake remains the follow-up for the second half of #82.

Closes #80. Part of #82.

Checks

just check (fmt, clippy, workspace tests, deny)
cargo test -p liuverse-render --lib pipelines_build_without_binding_mismatches

Two cheap lighting steps: static casters for the forest, and baked cavity AO. - Trees are now instanced casters in the one static campus shadow map, and the fitted shadow box includes the forest. This adds no per-frame work: the map is still built once. - Scene vertices carry a baked AO value (new vertex attribute at location 7). An analytic floor/ceiling term darkens interior walls and circulation, where the geometry already has a vertex at the junction. Ambient light is multiplied by it; direct sun still comes from the shadow map. - Exterior facades are excluded from the cavity term because they are one full-height quad, so darkening their corners would smear a gradient across the wall. Slabs and ground have no dense vertices for a contact term. The raycast bake remains the follow-up for the second half of #82. Closes #80. Part of #82. ## Checks - `just check` (fmt, clippy, workspace tests, deny) - `cargo test -p liuverse-render --lib pipelines_build_without_binding_mismatches`

sermuns added 1 commit

2026-10-20 09:23:16 +00:00

(slop) cast tree shadows and bake cavity ambient occlusion 35c47defd1

Trees join the static shadow map as instanced casters, and the fitted box includes the forest. Scene vertices carry a baked AO value; an analytic floor/ceiling term darkens interior walls and circulation. Part of #82 (the raycast bake remains).

Closes #80.