Uploaded May 2026 | Updated September 2026, 2 weeks ago
Ever built an infinite terrain system and noticed something weird at extreme distances? The terrain looks fine in wireframe, but the textures start stretching in weird diagonal patterns? This bug cost me hours to track down, and the root cause surprised me.
In this video, I debug a really tricky floating-point precision bug in my WorldGen infinite terrain system. The terrain geometry is perfect — but the UV coordinates lose precision at 2M+ units from world origin, causing textures to stretch unevenly in a checkerboard pattern. I walk through my entire debugging process — including the wrong turns I took (it's not the noise, not the mesh, not the material) — and show exactly what causes the stretching. Most importantly: how a single-line fix solved it completely.
This is a lesson in methodical debugging, floating-point precision, and why local coordinates matter more than you think. If you're building an open-world game in Unreal Engine, you'll probably hit this exact same issue.
**V1.6 also adds:**
- Dynamic road expansion — roads now generate in newly discovered chunks
- Erosion safeguard — stable terrain at all recommended resolutions
- Verified on UE5.5, 5.6, 5.7 — production-ready for Fab marketplace
No loading screens, no baking, no pre-built heightmaps. Drop one actor into your level, assign a material, hit Play — and your terrain will stream seamlessly even at extreme world distances.
────────────────────────────────────────
🌍 GET WORLDGEN V1.6
────────────────────────────────────────
► Get it on FAB: fab.com/listings/e4e93fbe-9326-40b8-a043-a809f788306a
► Project File: patreon.com/posts/157587427
► Free Playable Demo: patreon.com/posts/156846235
► Full Documentation: https://1drv.ms/f/c/a3cb1733695c0eb1/IgCUKg1xo8bFSbsWWElg7Db6AV2LhXbQgNwm2EQwHDPCpEo?e=d7AxMR
────────────────────────────────────────
🎮 ALL FEATURES (V1.0 - V1.6)
────────────────────────────────────────
✔ Infinite chunk streaming — actor pool, no spawn/destroy overhead
✔ Fully async mesh generation — game thread never blocked
✔ Dynamic terrain LOD — high-detail near, low-poly far (V1.5)
✔ Seamless LOD transitions — no visible pop-in or seams (V1.5)
✔ Far terrain rendering — ultra-low-poly distant chunks for massive view distances (V1.5)
✔ **Floating-point precision fix — eliminates texture stretching at extreme distances (NEW in V1.6)**
✔ **Dynamic road expansion — roads now generate in newly discovered chunks (NEW in V1.6)**
✔ **Erosion safeguard — auto-disabled at low resolution to prevent artifacts (NEW in V1.6)**
✔ Layered noise stack — Perlin, OpenSimplex2, Cellular, Ridged Multi, Domain Warp
✔ Continental masking — mountains only appear where land is
✔ Biome blending — blend weights baked into vertex colors (Grass / Rock / Snow / Beach / Underwater)
✔ Foliage system — HISM scatter on thread pool, driven by BiomeFoliageAsset data assets
✔ Dense grass system — ISM ground cover on radius-based world-snapped grid
✔ Per-asset grass radius, resolution, density, slope, collision control
✔ Slope Sink Depth — auto-corrects floating blades on slopes
✔ Hydraulic erosion — particle droplet simulation carves natural valleys and ridges
✔ Terrain deformation — sculpt with spherical brushes in real-time
✔ Fixed texture world scale — independent of tile size and resolution
✔ Fixed foliage grid — independent of mesh resolution
✔ Road network — A* terrain-following roads with corridor flattening (V1.6: now with dynamic expansion)
✔ Multiplayer support — terrain streams around all connected players with LOD awareness
✔ Dedicated server optimization — collision-only geometry, zero foliage/grass on servers
✔ Per-player gravity delay — applied per player including late joiners
✔ Water plane with configurable update interval
✔ Seamless chunk normals — no visible tile seams
✔ Full C++ source included
✔ **Verified on UE 5.4, 5.5, 5.6, 5.7 — zero errors/warnings (V1.6)**
────────────────────────────────────────
🎓 WHAT YOU'LL LEARN
────────────────────────────────────────
✓ How floating-point precision breaks at extreme world distances
✓ Methodical debugging approach for visual artifacts
✓ Local vs world coordinates in procedural mesh generation
✓ Why static meshes don't have this problem
✓ How to spot and fix precision loss in your own code
✓ The importance of using relative coordinates in mesh data
────────────────────────────────────────
🎮 SUPPORT & COMMUNITY
────────────────────────────────────────
► Patreon (project files, early access): patreon.com/cw/CodeLikeMe
► Subscribe for more UE5 dev content: youtube.com/codelikeme
► Email: teez.mrt@gmail.com
────────────────────────────────────────
#UnrealEngine #UE5 #GameDev #ProceduralGeneration #IndieDev #OpenWorld #TerrainGeneration #FloatingPointPrecision #BugFix #Debugging #CppPlugin #WorldGen #ProceduralTerrain #DeveloperTools #UnrealEngine5 #TerrainStreaming #InfiniteWorlds #GameEngineering
Ever built an infinite terrain system and noticed something weird at extreme distances? The terrain looks fine in wireframe, but the textures start stretching in weird diagonal patterns? This bug cost me hours to track down, and the root cause surprised me.
In this video, I debug a really tricky floating-point precision bug in my WorldGen infinite terrain system. The terrain geometry is perfect — but the UV coordinates lose precision at 2M+ units from world origin, causing textures to stretch unevenly in a checkerboard pattern. I walk through my entire debugging process — including the wrong turns I took (it's not the noise, not the mesh, not the material) — and show exactly what causes the stretching. Most importantly: how a single-line fix solved it completely.
This is a lesson in methodical debugging, floating-point precision, and why local coordinates matter more than you think. If you're building an open-world game in Unreal Engine, you'll probably hit this exact same issue.
**V1.6 also adds:**
- Dynamic road expansion — roads now generate in newly discovered chunks
- Erosion safeguard — stable terrain at all recommended resolutions
- Verified on UE5.5, 5.6, 5.7 — production-ready for Fab marketplace
No loading screens, no baking, no pre-built heightmaps. Drop one actor into your level, assign a material, hit Play — and your terrain will stream seamlessly even at extreme world distances.
────────────────────────────────────────
🌍 GET WORLDGEN V1.6
────────────────────────────────────────
► Get it on FAB: fab.com/listings/e4e93fbe-9326-40b8-a043-a809f788306a
► Project File: patreon.com/posts/157587427
► Free Playable Demo: patreon.com/posts/156846235
► Full Documentation: https://1drv.ms/f/c/a3cb1733695c0eb1/IgCUKg1xo8bFSbsWWElg7Db6AV2LhXbQgNwm2EQwHDPCpEo?e=d7AxMR
────────────────────────────────────────
🎮 ALL FEATURES (V1.0 - V1.6)
────────────────────────────────────────
✔ Infinite chunk streaming — actor pool, no spawn/destroy overhead
✔ Fully async mesh generation — game thread never blocked
✔ Dynamic terrain LOD — high-detail near, low-poly far (V1.5)
✔ Seamless LOD transitions — no visible pop-in or seams (V1.5)
✔ Far terrain rendering — ultra-low-poly distant chunks for massive view distances (V1.5)
✔ **Floating-point precision fix — eliminates texture stretching at extreme distances (NEW in V1.6)**
✔ **Dynamic road expansion — roads now generate in newly discovered chunks (NEW in V1.6)**
✔ **Erosion safeguard — auto-disabled at low resolution to prevent artifacts (NEW in V1.6)**
✔ Layered noise stack — Perlin, OpenSimplex2, Cellular, Ridged Multi, Domain Warp
✔ Continental masking — mountains only appear where land is
✔ Biome blending — blend weights baked into vertex colors (Grass / Rock / Snow / Beach / Underwater)
✔ Foliage system — HISM scatter on thread pool, driven by BiomeFoliageAsset data assets
✔ Dense grass system — ISM ground cover on radius-based world-snapped grid
✔ Per-asset grass radius, resolution, density, slope, collision control
✔ Slope Sink Depth — auto-corrects floating blades on slopes
✔ Hydraulic erosion — particle droplet simulation carves natural valleys and ridges
✔ Terrain deformation — sculpt with spherical brushes in real-time
✔ Fixed texture world scale — independent of tile size and resolution
✔ Fixed foliage grid — independent of mesh resolution
✔ Road network — A* terrain-following roads with corridor flattening (V1.6: now with dynamic expansion)
✔ Multiplayer support — terrain streams around all connected players with LOD awareness
✔ Dedicated server optimization — collision-only geometry, zero foliage/grass on servers
✔ Per-player gravity delay — applied per player including late joiners
✔ Water plane with configurable update interval
✔ Seamless chunk normals — no visible tile seams
✔ Full C++ source included
✔ **Verified on UE 5.4, 5.5, 5.6, 5.7 — zero errors/warnings (V1.6)**
────────────────────────────────────────
🎓 WHAT YOU'LL LEARN
────────────────────────────────────────
✓ How floating-point precision breaks at extreme world distances
✓ Methodical debugging approach for visual artifacts
✓ Local vs world coordinates in procedural mesh generation
✓ Why static meshes don't have this problem
✓ How to spot and fix precision loss in your own code
✓ The importance of using relative coordinates in mesh data
────────────────────────────────────────
🎮 SUPPORT & COMMUNITY
────────────────────────────────────────
► Patreon (project files, early access): patreon.com/cw/CodeLikeMe
► Subscribe for more UE5 dev content: youtube.com/codelikeme
► Email: teez.mrt@gmail.com
────────────────────────────────────────
#UnrealEngine #UE5 #GameDev #ProceduralGeneration #IndieDev #OpenWorld #TerrainGeneration #FloatingPointPrecision #BugFix #Debugging #CppPlugin #WorldGen #ProceduralTerrain #DeveloperTools #UnrealEngine5 #TerrainStreaming #InfiniteWorlds #GameEngineering
