


The graphics cards that implement each model are listed below. Unity supports emulating two Shader models: Shader Model 2 and Shader Model 3.

Progressive Shader models have added support for longer Shader programs, more powerful branching instructions and other features, and these improvements have enabled parallel improvements in the graphics of games. The capabilities of the hardware have improved over time in phases, and the general set of features that were introduced with each phase is known as a Shader Model. The graphics hardware that ultimately renders a Scene is controlled by specialised graphic programs called Shaders.
