Lys is an ultra-fast GPU powered solution that sets the standard for generating Radiance, Irradiance and Specular textures from panoramic, Sphere or 2d cube map cross source textures for use with HDR Image Based Lighting. With the ability to convert, manipulate and tweak your source images in real-time, generate Radiance, Irradiance and Specular textures on the fly and choose between Cosine weight