SeabedFloraActor scatters seagrass tufts on flat sand in the lit band and
sea fans on rock between 15 and 60 m, deterministically from the site id,
one MultiMesh per tile and kind, with procedural alpha-cut meshes and
textures (SeabedFloraAssets), vertex sway and wrapped lighting, no
collision and no sonar presence. Placement reads the field arrays
directly and runs on the worker thread pool. The seabed shader grows
turf algae on sunlit rock, coralline crusts in patches and encrusting
sponges in the shade, fading out between 40 and 75 m. The water-column
optics move to a shared shader include.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Tiles holding a slope over 35 degrees are meshed at two vertices per cell
on a clamped Catmull-Rom surface that passes through every grid node, so
cliffs and ledges lose the facets of the heightfield grid while the
collision stays on the grid. The domain field exposes the smooth
elevation and a separable, per-phase-weighted block sampler with linear
edge extrapolation and a one-cell margin for continuous normals; the actor
samples tiles on the worker thread pool and builds meshes afterwards.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
A FogVolume covering the site carries a fog shader whose scattering albedo
follows the same spectral transmittance as the seabed and whose density
grows below the reference depth, so haze darkens and turns indigo with
depth around every object; the global volumetric density moves into the
volume and the far depth fog only covers what lies beyond 128 m. Sand
ripples are bent by a slow domain warp, blended with a larger ripple
scale and faded out between 40 and 60 m, which hides the 3.2 m tiling.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Strata gain a dip, a slow seeded warp that bends and notches the beds, and
a per-bed thickness and hardness jitter with ordered boundaries, so walls
never invert. BoulderField gains an angularity parameter: elongated
super-ellipse slabs with flat tops, sharp shoulders, random heading and
tilt, footprint area preserved. Both sites are re-baked with the new
settings; the coral heads stay rounded.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
The seabed shader applies per-channel Beer-Lambert transmittance relative
to a 24 m reference depth: the scalar part dims the directional light in a
custom light() function and the sky ambient through AO, the chroma part
tints the albedo, and artificial lights are left untouched for the
submarine's projectors. Sky, fog and sun are cooled and the sun softened
so the plateau reads green-blue, the canyon floor cold blue and the
drop-off foot near-indigo.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
The environment declared the sky as its ambient source without a sky, so
shadowed faces received no ambient light. A procedural underwater sky now
feeds ambient and reflections; the directional light is steeper and
stronger with 70 % soft shadows; SSAO, filmic tonemapping, aerial
perspective and tinted volumetric fog complete the pass.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Rock is normal-mapped triplanar in world space at two scales, sand carries an
oriented ripple normal map on the xz plane, and a grain map drives detail
occlusion, albedo mottling and roughness. The three maps are seamless,
seeded, mipmapped textures built synchronously by SeabedDetailTextures, so
no asset is needed and builds are deterministic. The mesh has no tangents:
perturbed normals are computed in world space and written to NORMAL.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Strata now take a world rectangle, so the 4 m ledges cover the whole break
and talus south of z = 118 m without touching la Saignée or the landmarks.
Roughness gains octave and fractal-type parameters; a SlopeRoughness
modifier roughens rock faces only. Both sites are re-baked with hummocks
from 250 m down to 5 m. The secondary item, the first debris piece and one
safe-route waypoint move a few metres to keep their contracts.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
