Final Answer:
The primary job of the Vertex Shader is to tell OpenGL how to transform the vertices of 3D objects in a graphics scene.
Step-by-step explanation:
The Vertex Shader is a key component in the graphics pipeline of a rendering system, such as OpenGL. Its primary responsibility is to process each vertex of a 3D object, applying transformations like translation, rotation, and scaling. These transformations are essential for positioning and orienting the object in a 3D space. The Vertex Shader also deals with lighting calculations and other per-vertex operations. By providing instructions on how to manipulate individual vertices, the Vertex Shader contributes to the creation of the final image displayed on the screen. In summary, the Vertex Shader serves as a crucial stage in the rendering process, defining the geometry and appearance of 3D objects in a graphics scene.