In the field of 3D computer graphics, the unified shader model (known in Direct3D 10 as "Shader Model 4.0") refers to a form of shader hardware in a graphical processing unit (GPU) where all of the shader stages in the rendering pipeline (geometry, vertex, pixel, etc.)
In the domain of 3D computer graphics, the unified shader model is a term used in Direct3D 10 to describe a form of GPU hardware that encompasses all shader stages within the rendering pipeline, including geometry, vertex, and pixel processing.