Game Art Game Art MCQ 4 — Questions and Answers
Question 1: What is the significance of 'texel density' in game asset production?
- The number of triangles per texture
- The ratio of texture pixels per unit of world space, kept consistent for visual uniformity (Correct answer)
- The speed at which textures stream into memory
- The number of UV islands on a mesh
Correct answer: The ratio of texture pixels per unit of world space, kept consistent for visual uniformity
Consistent texel density ensures all surfaces in a scene appear equally sharp or blurry relative to their real-world size.
Question 2: Which shading model is most commonly used in modern AAA real-time game rendering?
- Phong
- Blinn-Phong
- Physically Based Rendering (PBR) (Correct answer)
- Flat shading
Correct answer: Physically Based Rendering (PBR)
PBR models how light physically interacts with surfaces using energy conservation, producing consistent results under varied lighting conditions.
Question 3: What is a 'bone' in the context of skeletal animation?
- A rigid polygon used as a collision proxy
- A transform node in a hierarchy that deforms bound mesh vertices (Correct answer)
- A texture layer used to simulate skin
- A keyframe that marks the start of an animation
Correct answer: A transform node in a hierarchy that deforms bound mesh vertices
Bones are hierarchical transform objects whose position and rotation drive vertex deformation through skin weight influences.
Question 4: What problem does mipmapping solve in real-time rendering?
- Z-fighting between overlapping polygons
- Aliasing and shimmering on textures viewed at oblique angles or from a distance (Correct answer)
- Overdraw caused by transparent surfaces
- Seams visible at UV island borders
Correct answer: Aliasing and shimmering on textures viewed at oblique angles or from a distance
Mipmaps are pre-filtered lower-resolution copies of a texture; the GPU samples the appropriate mip level to prevent high-frequency aliasing artifacts.
Question 5: In 2D animation, what is the 'onion skin' feature used for?
- Blending two sprite layers together
- Displaying ghost frames from previous and next keyframes to aid timing (Correct answer)
- Generating in-between frames automatically
- Masking parts of a sprite with alpha
Correct answer: Displaying ghost frames from previous and next keyframes to aid timing
Onion skinning shows translucent overlays of surrounding frames so animators can judge motion arcs and spacing without scrubbing the timeline.
Question 6: What is 'UV bleeding' and why is it a problem in lightmapped environments?
- Textures stretching beyond polygon boundaries due to incorrect seam placement
- Pixels from neighboring UV islands leaking into an island during texture baking, causing dark or colored edges (Correct answer)
- Overly saturated vertex colors on a baked mesh
- Texture coordinates wrapping outside the 0-1 space unintentionally
Correct answer: Pixels from neighboring UV islands leaking into an island during texture baking, causing dark or colored edges
UV bleeding occurs when the baking process samples pixels from adjacent UV islands, creating colored borders that become visible at runtime.
Question 7: Which render pipeline feature allows a game engine to defer lighting calculations until after all geometry is drawn?
- Forward rendering
- Deferred rendering (Correct answer)
- Ray casting
- Shadow mapping
Correct answer: Deferred rendering
Deferred rendering stores geometry data (normals, depth, albedo) in a G-buffer and applies all lighting in a post-pass, enabling many dynamic lights cheaply.
Game Art Game Art MCQ 4
What is the significance of 'texel density' in game asset production?