3D Texturing 3D Texturing 2

Question 1

What does the term 'texel density' refer to in 3D texturing?

Accepted Answer

The ratio of texture pixels to surface area in world space

Answer

Texel density describes how many texture pixels cover a given unit of real-world surface area, ensuring consistent detail across assets.

Question 2

Which blending mode in a PBR workflow allows you to combine two normal maps so both details are preserved?

Accepted Answer

Reoriented Normal Mapping (RNM)

Answer

Reoriented Normal Mapping (RNM) correctly combines two normal maps by reorienting one relative to the other, preserving both sets of surface details.

Question 3

In Substance Painter, what is the purpose of a 'Fill Layer'?

Accepted Answer

To apply a uniform color or texture value across the entire channel

Answer

A Fill Layer in Substance Painter applies a constant color, value, or texture uniformly to one or more material channels across the whole mesh.

Question 4

What artifact appears on a texture when mipmapping is disabled and the camera views a surface at a steep angle?

Accepted Answer

Aliasing / moiré pattern

Answer

Without mipmapping, high-frequency texture detail at oblique angles causes aliasing and moiré patterns because many texels map to few screen pixels.

Question 5

Which channel in a PBR metallic-roughness workflow stores how mirror-like a surface is?

Accepted Answer

Roughness

Answer

The Roughness channel controls the microsurface scattering of light; a value of 0 produces a mirror finish while 1 produces a fully diffuse surface.

3D Texturing Practice Test