The Isovist_App uses the OpenGL standard to massively parallelise spatial calculations via algorithmic methods designed to run on high-performance modern graphics processor devices. Doing so allows production of a pixel-fine field of quantitative results, across hundreds of thousands of points, in near real-time. 

Drivers for OpenGL are usually bundled with standard operating system graphics driver support software. In some instances, users may need to update such drivers. The software performs optimally on computer systems with discrete graphics cards, such as an NVidia GForce GT7XX, AMD Radeon R9 M370X, or higher specification. It has a best functionality on contemporary MacBook Pro machines; is known to work well on Dell XPS 15 series laptops; and should be operable on most Windows PC workstations with a contemporary 3d rendering setup. 

Older machines may struggle to deliver the performance levels required to run the Isovist_App well. Proceed with caution if this is you.