On December 17, 1997, Microsoft and SGI initiated the Fahrenheit project, which was a joint effort with the goal of unifying the OpenGL and Direct3D interfaces (and adding a scene-graph API too).
O 17 de decembro de 1997 Microsoft e SGI iniciaron o proxecto Fahrenheit, esforzo cooperativo co obxectivo de unificar as interfaces de OpenGL e Direct3D (e engadir tamén unha API scene-graph).