UE5 World Partition Calculator v2.2

// Unreal Engine

WORLDPARTITION

Landscape Calculator

ARTIST MODE 🎨

v2.2 · UE 5.8 REAL-TIME ANALYSIS

Terrain Type

🌲 Landscape 🪨 Mesh Terrain (UE5.8)

Mesh Terrain uses baked texture arrays + Nanite clusters instead of per-vertex height/weightmaps.

Hardware & Platform ▸

Platform Preset

⚠ Platform presets auto-fill CPU and GPU fields.
Platform preset values are approximate — always profile on target hardware.

CPU

GPU

VRAM (GB)

TeraFLOPS

System Memory (RAM GB)

World Partition

Grid Size (1–16)

↳ N×N streaming cells — total = Grid²

Region Size (4–64)

↳ WP cells per HLOD region — capped at Grid Size

Scale (UE units · 100 = 1 m/quad)

Section Size (quads)

Quads per section edge

Sections per Component

Sections per component

↳ 2×2 = smoother LOD transitions, more draw calls

Number of Components

X (1–256)

Y (1–256)

Quick Presets

Streaming Distance

Streaming Distance (cells, 1–8)

↳ How many WP cells in each direction to keep loaded around player

Material Budget

Paint Layers (1–16)

Bit Depth Settings

Heightmap Bit Depth

↳ 16-bit = UE default · 65,536 height levels

Weightmap Bit Depth

↳ 8-bit = UE default · 256 blend levels per layer

Runtime Virtual Texture (RVT)

Enable RVT layer rendering

↳ Replaces weightmap sampling with Runtime Virtual Texture pages

Virtual Texture Resolution

↳ Virtual address space — not fully resident in VRAM at once

RVT Layers (1–4)

Page Pool / Layer (MB)

↳ Page pool = actual VRAM committed per RVT layer on GPU

Nanite & Rendering

Enable Nanite Landscape (UE 5.4+)

↳ Replaces traditional LOD with virtualized mesh geometry

Virtual Shadow Maps (VSM)

↳ High-quality shadows — increases per-component shadow geometry cost

Collision

Collision Mode

↳ Simple = convex approx · Complex = full heightfield · Per-Poly = exact mesh (expensive!)

Resolution & Components ▾

World Size ▾

Streaming Memory Profile ▾

Memory & VRAM ▾

Heightmap

Heightmap — all bit depths compared

Bit Depth	Bytes / Vertex	Precision	Total Size	Notes
8-bit	1 B	—	—	Visible terracing at normal scales
16-bit	2 B	—	—	UE default — production standard
32-bit	4 B	—	—	Float precision — rarely needed

Weightmaps

Weightmap — all bit depths compared (per layer)

Bit Depth	Bytes / Vertex / Layer	Blend Steps	Size / Layer	All Layers Total
8-bit	1 B	256	—	—
16-bit	2 B	65,536	—	—
32-bit	4 B	float	—	—

Summary

Streaming Memory · per WP Cell

Memory · per HLOD Region

Collision Memory ▾

World Partition Streaming ▾

View Distance & LOD / HLOD Transitions

Approx. Distance	Render State	Description

Resource Budget ▾

CPU (Compute)–%

Memory (RAM)–%

GPU - Compute (TFLOPs)–%

GPU - VRAM–%

Storage / Streaming Bandwidth (Landscape requirements only)

Peak Read Size (per chunk)

MB burst capacity

Cook / Import Time Estimator ▸

⚠ Estimates assume NVMe SSD + modern 8-core CPU. HDD: ×5 import time. Actual times vary ±50% based on system, UE version, and project complexity.

Point Density ▸

Geometry ▸

Runtime Virtual Texture — VRAM ▸

RVT vs Weightmap approach — VRAM comparison

Approach	VRAM (layers)	Scales with resolution?	Fixed overhead?	Verdict
Weightmaps	—	Yes — vertex-linear	No	—
RVT page pool	—	No — fixed pool	Yes	—

LayerInfo & Weightmap Textures ▸

◉ LIVE

LANDSCAPE COMPONENTS — WP CELLS HLOD REGION