Game Viewport Widget

Game Viewport Widget (UGameViewportWidget) renders a real-time 3D viewport inside UMG. No scene capture, render target, or material setup — drag Game Viewport Widget from the palette, tune post-process and FOV in the Details panel, and drive camera or visibility from Blueprint at runtime.

Demo content lives under GameViewportUMG/ (DemoMap, WBP_Viewport, WBP_SampleWidget).

Architecture

flowchart TB
  subgraph umg [UMG hierarchy]
    Parent[Your User Widget]
    GVW[UGameViewportWidget]
    Overlay[Optional overlay widgets via Add Content Widget]
  end
  subgraph render [Viewport]
    Slate[SCustomGameViewport]
    World[Live world render]
  end
  Parent --> GVW
  GVW --> Slate --> World
  GVW --> Overlay

What is included

Item	Path	Purpose
Widget class	UGameViewportWidget	Palette widget under Game Viewport Widget
Demo map	DemoMap	Example level
Sample overlay	WBP_SampleWidget	Widget rendered on top of the viewport
Sample host	WBP_Viewport	Example UMG layout

Pathfinding flow (camera)

sequenceDiagram
  participant Game as Your logic
  participant GVW as GameViewportWidget
  participant PCM as Player Camera Manager
  Game->>GVW: Set Camera Location / Rotation
  alt Follow player
    GVW->>PCM: Read camera transform each frame
  else Custom camera
    GVW->>GVW: Use override location / rotation
  end
  GVW->>GVW: Render viewport

Guides

Page	Description
Getting started	Add widget to UMG and tune Details panel
Custom widgets	Overlay UMG on the viewport
Transparent viewport	Alpha and post-process setup
Overview	Demo, actor isolation, custom camera
Widget reference	Properties, view modes, Blueprint API

Shipped defaults

Setting	Default	Notes
Is Active	true	Keeps viewport ticking when visible
View Mode	Lit	See EViewportViewMode
Show Overlay Text	—	View mode label overlay
Field Of View	—	Perspective FOV (disabled in ortho)
Anti Aliasing Method	—	Prefer None or FXAA for performance
Use Orthographic Projection	false	Toggle with Toggle Orthographic