Computer Graphics MCQs with Answers
Practice important Computer Graphics MCQs with answers and explanations.
Chapter: 24
Q781:
What is the purpose of the ColorSpace tool?
A. To modify RGB values
B. To analyze oversaturated colors
C. To adjust brightness
D. To scale color values
Correct Answer:
B
Chapter: 24
Q782:
The equation for alpha blending involves combining the ________ color with the destination color.
A. Source
B. Input
C. Background
D. Final
Correct Answer:
A
Chapter: 24
Q783:
In the code example, what does the variable 'av' represent?
A. Alpha value
B. Blending factor
C. Transparency level
D. Color intensity
Correct Answer:
A
Chapter: 24
Q784:
In the given code, the final color value for red is computed as: p1->r = ________.
A. (av * p1->r) + (1 - av) * p2->r
B. (av * p1->r) - (1 - av) * p2->r
C. (1 - av) * p1->r + av * p2->r
D. p1->r + p2->r
Correct Answer:
A
Chapter: 24
Q785:
The Alpha value in the code is represented as a ________.
A. Byte
B. Integer
C. Float
D. String
Correct Answer:
C
Chapter: 24
Q786:
The blending formula in the code is used to blend two ________.
A. Images
B. Colors
C. Pixels
D. Layers
Correct Answer:
A
Chapter: 24
Q787:
Clamping color values causes ________ to be lost in the scene.
A. Subtle changes
B. Major color shifts
C. Brightness
D. Saturation
Correct Answer:
A
Chapter: 24
Q788:
The RGB values of a color are clamped between ________.
A. -1 and 1
B. 0 and 255
C. 0 and 1
D. -255 and 255
Correct Answer:
C
Chapter: 24
Q789:
What is the output of alpha blending with an alpha value of 0x00?
A. Completely transparent
B. Fully opaque
C. Half transparent
D. No change in transparency
Correct Answer:
A
Chapter: 24
Q790:
The alpha component affects the ________ of a color.
A. Transparency
B. Brightness
C. Saturation
D. Contrast
Correct Answer:
A
Chapter: 24
Q791:
Which technique is used to prevent a color from becoming too dark during clamping or scaling?
A. Clipping
B. Scaling
C. Clamping
D. Shifting
Correct Answer:
A
Chapter: 24
Q792:
When performing alpha blending, what happens if the destination blend factor is set to 0?
A. The new pixel is completely added
B. The new pixel is ignored
C. The colors are multiplied
D. The transparency is preserved
Correct Answer:
B
Chapter: 24
Q793:
In the given code example, the blending of colors is applied to a ________.
A. Bitmap
B. Triangle
C. Texture
D. Surface
Correct Answer:
A
Chapter: 24
Q794:
What happens when a color value exceeds the displayable range?
A. It gets clamped
B. It gets scaled
C. It gets clipped
D. It is ignored
Correct Answer:
A
Chapter: 24
Q795:
The ColorSpace tool helps to visually demonstrate the effect of ________.
A. Oversaturated colors
B. Clipping
C. Scaling
D. Clamping
Correct Answer:
A
Chapter: 24
Q796:
What is the primary issue with using scaling for color values?
A. It reduces contrast
B. It increases brightness
C. It affects transparency
D. It removes saturation
Correct Answer:
A
Chapter: 24
Q797:
Clamping to 1 or 0 in the color values results in ________ changes in the scene.
A. Loss of subtle effects
B. Enhanced details
C. Improved lighting effects
D. Improved rendering speed
Correct Answer:
A
Chapter: 24
Q798:
What does the RGB color model represent?
A. Colors as combinations of Red, Green, and Blue
B. A method of scaling color values
C. A way to measure contrast
D. A way to define alpha blending
Correct Answer:
A
Chapter: 24
Q799:
Darklights can be used to filter out specific ________ in a scene.
A. RGB colors
B. Light sources
C. Textures
D. Shapes
Correct Answer:
A
Chapter: 24
Q800:
The primary benefit of using clamping over scaling is ________.
A. Speed
B. Accuracy
C. Intensity
D. Saturation
Correct Answer:
A