A realtime preview tool for projection mapping
C++ Makefile Objective-C++ GLSL


Virtual Mapper v2.1.3


Important: Latest version only supports macOS. Please use v0.9 if you use Windows.


Utility tool for projection mapping. You can preview 3d projected image in realtime while editing a net of screen. This app can receive image from applications supports Syphon or Spout (ex: After Effects, VDMX, Arena). This software is made using openFrameworks.

Develped by Baku Hashimoto


1. Export FBX Scene

Virtual Mapper will interpret a scene file with following rules:

  • All meshes whose name begins with screen will be interpreted as Screen and the software will replace its surface with a texture specified in Source menu.
  • Screen meshes must have UV coordinates.
  • All meshes whose name begins with guide will be interpreted as Guide.
  • Other meshes will be interpred as Stage.
  • Cameras will be imported and users can toggle them. (Orthographic camera does not supported currently.)
  • The software supports only diffuse and luminance color of material.
  • The software does not support animation, light, spline, and embed texture in FBX format.

Example: Cinema4D

Setup scene such like this:

Then export FBX from File > Export > FBX (*.fbx).

2. Setup an sender application

macOS (via Syphon)

There's several plugins for softwares below:

Other supporting softwares is here: Syphon official site.

Windows (via Spout)

You can download plugins from Spout official site.

3. Launch Virtual Mapper

  • Launch sender application and Virtual Mapper.
  • Load the FBX file from Scene > Open Scene
  • Select the applopriate input source.

NOTE: When you could not open the app and find below alert:

Please open System Preferences > Security & Privacy, and then click in Open Anyway.


Virtual Mapper is published under a MIT License. See the included LISENCE file.


  • Windows support
  • retina display support
  • add rendering options
  • add "export to image / video" feature
  • OSC / MIDI controlling feature