What is the set of operations that are needed to perform to display a 3d representation over 2d screen?

Name the major stages of vertex transformations.

Name & give syntax of general purpose transformation commands.

Explain viewing & modeling transformations briefly.

What is projection transformation? Give difference between perspective & orthographic projections.

What do you understand by color perception?

What is difference between color index mode & RGBA mode?

How do we specify color of a geometrical object in both RGBA & color index mode?

What is a shading model? Why we need it? List shading models that are available in OpenGL.

What do you understand by hidden surface removal? Name few of algorithms used for the same.