Global Illumination Package is Emergent's support library for GI in Gamebryo. Since Emergent abandoned it with bugs, we fix them and provide fixed source code.

For Gamebryo version 3.1.1, install Emergent's LightSpeed Global Illumination Package 2.1.1. Beware, Emergent released more than one 2.1.1 version, the good one is from 2010-05-05, make sure you did not download it before 2010-05-05.

To fix your GI Package after installation,

copy our src\GIPackage\NiGIDescriptor.cpp over C:\Emergent\Integrations\LightSpeed_GlobalIllumination_2.1.1\Source\NiGIMaterial\NiGIDescriptor.cpp
open C:\Emergent\Integrations\LightSpeed_GlobalIllumination_2.1.1\Build\Win32\VC90\Gamebryo_GI.sln
change configuration to Shipping DLL and build