20 Computer Graphics Questions & Answers – Quiz 3 Flashcards

Which of the following are types of emissive displays?
A. LED
B. LCD
C. Plasma Panel
D. CRT

Which of the following is true about non-emissive displays?
A. They generate light to create images
B. They convert light to graphics pattern on screen through some optical effects
C. They do not involve any light in image formation

Electrothermal printing methods are used to create patterns on a _______ sensitive paper.
A. water
B. ink
C. plasma
D. heat

GPU at any instant can process a subset of all the screen pixel positions. This is called as
A. sub shader
B. fragment shader
C. pixel shader
D. grid shader

The term “shader programming” can also be referred to as: (Choose all that apply).
A. Graphics hardware programming
B. CPU programming
C. GPU programming
D. General-purpose programming

Fragment shaders perform computations in pixel processing stage to determine how each pixel is shaded, how texture is applied and ______.
A. if a pixel should be drawn
B. if vertex should be added

What does GLUT stand for?
A. Graphics Library Utility Toolkit
B. General Library Utility Toolkit
C. OpenGL Utility Toolkit
D. Graphics Utility Toolkit

GLUT provides a library of functions for interacting with any screen-windowing system.
A. True
B. False

Which among the following is not an example of General Programming Package for computer graphics?
A. OpenGL
B. CAD packages for medical
C. CAD packages for architectural

Frame buffer is only a part of video memory. We also require memory to store object definitions.
A. True
B. False

In the Cohen-Sutherland algorithm, how many bit codes are used to represent a region?
A. 2-bit
B. 4-bit
C. 8-bit
D. 16-bit

Match the following.
I. Line, II. Convex fill-area, III. Convex and concave fill-area
A. Sutherland-Hodgeman algorithm, B. Cohen-Sutherland algorithm, C. Weiler-Atherton Algorithm

Cohen-Sutherland line clipping algorithm in 3D divides the view coordinate space into _________ coded regions.
A. 4
B. 9
C. 16
D. 27

‘Back Face Elimination’ is required for ____________________.
a. hidden surface removal
b. fill-area clipping
c. both hidden surface removal and fill-area clipping

HSR method broadly of TWO types: ________space method and image space method
a. unhidden
b. plane
c. hidden
d. object

The Z-buffer method can be used on transparent surfaces for hidden surface removal.
a. True
b. False

Coherence properties in hidden surface removal include:
a. Object coherence
b. Depth coherence
c. Texture coherence
d. Frame coherence

Depth Sorting (Painter’s) algorithm works at
a. image space
b. object space
c. both image and object spaces
d. neither image space nor object space

Warnock’s Algorithm is a __________ method. clipping area subdivision
a. clipping
b. area subdivision

In Warnock’s Algorithm, if the current square region does not contain any surface, we assign the background color.
a. True
b. False