3D Modeling 3D Modeling Materials & Texturing 2 — Questions and Answers
Question 1: What is texture baking in 3D production?
- Compressing textures for export
- Rendering lighting and surface details from a high-poly mesh onto a low-poly mesh's UV map (Correct answer)
- Applying textures permanently to geometry
- Converting procedural textures to bitmaps
Correct answer: Rendering lighting and surface details from a high-poly mesh onto a low-poly mesh's UV map
Texture baking transfers detail (normals, AO, color) from a high-resolution model onto a texture map for use on a low-poly version.
Question 2: What is a Displacement map used for in 3D rendering?
- Move vertices in the UV layout
- Physically push geometry based on grayscale texture values at render time (Correct answer)
- Replace missing textures
- Apply procedural noise to materials
Correct answer: Physically push geometry based on grayscale texture values at render time
A Displacement map actually moves surface geometry at render time based on pixel values, unlike Normal maps which only fake it.
Question 3: In texturing, what does 'tiling' refer to?
- Splitting a texture into separate image files
- Repeating a texture pattern across a surface multiple times (Correct answer)
- Aligning UV islands in rows
- Baking multiple passes into one map
Correct answer: Repeating a texture pattern across a surface multiple times
Tiling repeats a texture seamlessly across a surface, allowing small textures to cover large surfaces without stretching.
Question 4: What is a Subsurface Scattering (SSS) shader used to simulate?
- Refraction of light through glass
- Light penetrating and scattering inside translucent materials like skin or wax (Correct answer)
- Reflections on metallic surfaces
- Soft shadows from area lights
Correct answer: Light penetrating and scattering inside translucent materials like skin or wax
SSS simulates light entering a surface, scattering beneath it, and exiting at a different point, crucial for realistic skin rendering.
Question 5: What resolution is commonly used for game-ready textures to balance quality and performance?
- 512x512 only
- 2048x2048 (2K) (Correct answer)
- 8192x8192 (8K)
- 128x128
Correct answer: 2048x2048 (2K)
2K (2048x2048) textures are the standard balance between visual quality and GPU memory usage in modern game production.
Question 6: What does the term 'texel density' refer to in game art production?
- Number of texture layers on a surface
- Uniform distribution of texture resolution per unit of world space across assets (Correct answer)
- Texture file compression ratio
- Number of UV islands per mesh
Correct answer: Uniform distribution of texture resolution per unit of world space across assets
Texel density measures how many texture pixels cover a unit of world space, ensuring consistent resolution across all game assets.
3D Modeling 3D Modeling Materials & Texturing 2
What is texture baking in 3D production?