Large worlds
Build and stream very large scenes: coordinate precision, cell streaming, mesh terrain, water bodies, Cesium 3D Tiles, and procedural content.
Compared with upstream O3DE (single-precision world path, heightfield Terrain only, no built-in World Streaming / Water), Dawn Engine ships an integrated large-world stack. Cesium 3D Tiles is built into the engine, wired to LargeWorld, and maintained as a first-class capability—the historical Cesium for O3DE community Gem is no longer actively maintained.
| Topic | Description |
|---|---|
| Double-precision rendering | Large world coordinates, render origin, and project settings, with API reference including HighPrecisionTransformBus. |
| World Streaming | Multi-chapter handbook: grid partitioning, bake, runtime streaming, HLOD, layers, multiplayer, and APIs. |
| PolyTerrain | True 3D mesh terrain handbook: modifiers, bake, heightfield coexistence, VT / PCG / streaming. |
| Water | Rivers, lakes, and oceans: waves, refraction, shore/flow bake, buoyancy, and surface queries. |
| Cesium 3D Tiles | Multi-chapter handbook: ion / URL tilesets, georeference, overlays, navigation, recipes, and API reference. |
| PCG (preview) | PolyTerrain PCG graphs available now; general-purpose PCG Gem planned. |
| ContentTools (preview) | Planned spline roads/pipelines, crowds, and volumetric sky content tools. |
Double-precision rendering
Learn how Dawn Engine keeps sub-millimeter precision at 100 km scale using CPU double world coordinates and render-origin-relative GPU submission.
World Streaming
Enable the WorldStreaming Gem, author and bake a partitioned world, and configure runtime streaming, HLOD, content layers, and multiplayer.
PolyTerrain
Enable the PolyTerrain Gem, author Poly Partitions with a non-destructive modifier stack, bake compiled sections, and coexist with heightfield terrain.
Water
Learn how to enable the Water Gem, author rivers, lakes, and oceans, configure wave assets and materials, bake flow and shore data, and use buoyancy and surface queries.
Cesium 3D Tiles
Enable the Cesium3DTiles Gem, configure Cesium ion, set up georeference and tilesets, drape imagery overlays, and navigate a WGS84 globe in Dawn Engine.
PCG
Preview of Dawn Engine procedural content generation—PolyTerrain PCG graphs already in engine, and the planned general-purpose PCG Gem roadmap.
ContentTools
Preview of planned open-world content tools for Dawn Engine—spline roads/pipelines, crowd simulation, and volumetric sky authoring and runtime.