Game Art Game Texturing and Materials 3

Question 1

What is a 'height map' used for in game texturing pipelines?

Accepted Answer

Encoding surface elevation detail to drive parallax or displacement effects

Answer

Storing level terrain elevation data for the engine

Answer

Defining walkable areas on a mesh

Answer

Controlling the metallic value of a surface

Question 2

What does 'RGB channel packing' mean in game texture optimization?

Accepted Answer

Storing three separate grayscale maps (e.g., AO, roughness, metallic) in a single texture's RGB channels

Answer

Increasing the color depth of a texture to 32-bit

Answer

Combining multiple material IDs into one image

Answer

Splitting a texture atlas into three separate maps

Question 3

What is an 'emissive map' used for on a game asset?

Accepted Answer

Defining areas of the model that appear to glow or emit light independent of scene lighting

Answer

Storing how much light a surface absorbs

Answer

Controlling specular hotspot intensity

Answer

Encoding foam patterns on water surfaces

Question 4

What is 'texture compression' in game development and why is it important?

Accepted Answer

Encoding texture data in GPU-native formats to reduce VRAM usage without large quality losses

Answer

Reducing image resolution before importing into the engine

Answer

Combining multiple textures into one atlas

Answer

Removing UV seams to create smaller UV layouts

Question 5

What is the purpose of a 'trim sheet' in game environment art?

Accepted Answer

A single tileable texture strip containing multiple edge and surface detail variations reusable across many meshes

Answer

A reference guide for artists listing all approved color palettes

Answer

A UV layout template for character faces

Answer

A material blend mask for terrain transitions

Question 6

What does 'mipmap' refer to in game texturing?

Accepted Answer

A pre-calculated series of progressively smaller versions of a texture used at different viewing distances

Answer

A UV projection type for cylindrical objects

Answer

A specular mask for metallic surfaces

Answer

A color grading map applied in post-processing