Resolume Arena 6 relied on OpenGL 2.1. While stable, this architecture was built in the era of pixel shaders 3.0 and simple texture mapping. When Resolume Arena 7 launched, the development team at Resolume completely rewrote the rendering engine to leverage modern GPU features.
If you are a VJ, projection mapper, or live visual artist, you have likely encountered two critical pieces of technology: (the industry-standard VJ software) and OpenGL 4.1 (the graphics rendering API that powers its engine). resolume arena opengl 4.1