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Frequently Asked Questions (FAQ)
Q1
Why do we need 3D graphics capability in our PC?
Answer
3D technology is becoming increasingly important (and common) not only in
games, but also in other applications such as VRML, which allows 3D scene
descriptions in Web applications. 3D technology is used for image editing,
modeling, and an increasing number of in home and business applications. In
games, as well as other applications, 3D acceleration not only allows better
visual qualities and more realistic scenery attributes than software alone, but it
also allows a higher frame rate, which translates into a more interactive
experience for the end user.
Q2
What does “Rendering Engine” mean?
Answer
“Rendering Engine” generically applies to the part of the graphics engine that
draws 3D primitives, usually triangles. In most implementations, the rendering
engine is responsible for interpolation of edges and "filling in" the triangle.
Q3
What does the set-up engine do in a graphics controller?
Answer
A set-up engine allows drivers to pass triangles in the form of raw vertex
information; whereas, most common designs force triangles to be pre-processed
for the rendering engine in terms of delta values for edges, color, and texture.
Q4
Why does a 3D graphics chip need to have both a rendering engine and a
setup engine?
Answer
Any “3D application”, a game, VRML, or modeling package, can benefit from 3D
rendering. This is especially true of an application that uses texturing
extensively, because texturing and texture filtering are very intensive operations
at the pixel level in terms of CPU operations and demands for memory
bandwidth. Without a set-up engine in a graphics controller, the CPU has to
calculate the delta values for edges, color, and textures; the drivers need to
handle ten (10) times more extensive data. This results in slower 3D pipeline
operations between the CPU and the graphics controller.
Q5
If we use powerful CPUs, such as a Pentium™ 200, can a standard 2D
graphics card achieve 3D performance?
Answer
