UE Viewer, formerly known as "Unreal model viewer", is viewer for visual resources of games made with Unreal engine. Currently supported engine versions from 1 to 3, support for Unreal engine 4 is under development.

There's a place where you may discuss source code: gildor.org forums.

The source code is available on GitHub. You may either checkout it using any Git client, or download it as Zip file.

We are using own build system to compile UModel. You may find a Perl script in Tools/genmake. This script generates makefiles from some human-friendly project format. After that you may build generated makefile using 'nmake' for Visual Studio or 'make' for gcc.

UModel is compiled using Visual Studio. Currently build is performed with Visual C 2010, but in theory almost all Visual Studio versions should be supported (perhaps except Visual C 6.0 and Visual C 2001).

Build system utilizes GNU Tools for building, in particular - Bash and Perl. I've packaged Windows versions of such tools which was a part of MinGW/MSYS project. You get may everything you need for a build here. This page contains BuildTools.zip. You should download it and extract into some directory, let's say to C:\BuildTools. After that, put C:\BuildTools\bin to the system PATH variable. Also it is possible to create a batch file which will temporarily tune PATH and then execute build script. Here's an example of such file:

@echo off
set PATH=%PATH%;C:\BuildTools\bin
bash build.sh

To launch a build process without a batch, simply execute

bash build.sh

This system has everything what is required for build. You'll only need to install SDL2 development package (and of course gcc). To build UModel, execute from console

./build.sh

UModel uses custom CRT library for being able to link with MSVCRT.DLL. It is possible to statically link with you compiler's CRT by changing in common.project

LIBC = shared

to

LIBC = static

MSVCRT.DLL is choosen because it allows to reduce size of UModel distribution without needs to install compiler runtime libraries on system. You may disable MSVCRT.DLL linking by commenting out line

OLDCRT = 1

If you want to use MSVCRT.DLL, you should extract MSVCRT.zip archive available here to the directory LIBS one level above of UModel directory. So, the directory structure should look like this

/Libs
  /MSVCRT
    /include
    /lib
    msvcrt.project
/UModel
  /Core
  /Unreal
  ...
  build.sh
  ...

Also you may change MSVCRT library path by changing WDKCRT variable in common.project.

UModel was released without Visual Studio solution. By the way it is still possible to debug it within IDE. You may build Debug version of UModel by uncommenting #define MAX_DEBUG 1 in UmodelTool/Build.h and rebuilding the project. After that you'll get executable with optimizations disabled, and with some extra features. For example, if umodel.exe crashes, and it is started with -debug option, standard Windows window appears with offer to close program or debug it. You may choose "Debug with Visual Studio" there.

If you want to debug umodel.exe in VIsual Studio without having a crash, you may load it either from IDE (File | Open | Project/Solution, then select umodel.exe), or you may type

devenv umodel.exe

from console.

It is recommended to use Visual Studio 2013 because it has more advanced debugging features than previous studio versions. You may copy Tools/umodel.natvis file to C:\Users\Your_user_folder\My Documents\Visual Studio 20NN\Visualizers, and after that you'll be able to view TArray and FString structures during debug session.

TODO

/Core
  /GL
/Docs
/Exporters
/Libs
/MeshInstance
/obj
/Tools
  /CompatTable
  /MaxActorXImport
  /PackageExtract
  /PackageUnpack
/UI
/UmodelTool
/Unreal
  /Shaders
/Viewers