The camera moves primarily in +X (drift = uTime * uSpeed * 0.45)
with a slight +Z component (drift * 0.7). A square 9x9 mosaic
wastes half its tiles behind the camera. A corridor shape with
13 tiles along travel (X) and 5 tiles perpendicular (Z) uses 65
tiles to cover the same useful area — and refetches happen only
when the camera approaches the forward edge, not all four sides.
- GROUND_CORRIDOR_X = 13 (≈13s of forward travel at uSpeed=1)
- GROUND_CORRIDOR_Z = 5
- GROUND_BUFFER_X = 2, GROUND_BUFFER_Z = 1
- Shader uniform uGroundSize is now vec2 (sizeX, sizeZ)
- UV mapping: gUv = (hitPoint - centre) / size + 0.5 with per-axis size
Richard Zink
47f2c16eba