In Unity's Lighting window, which parameter controls the detail of baked lighting textures?

• A. Ambient Lighting
• B. Lightmap Resolution
• C. Realtime GI
• D. Bake-related timing and samples

Answer: (B)

Baked lighting textures are stored as lightmaps, and the level of detail in those textures is controlled by the Lightmap Resolution setting. This value determines texel density — how many texture texels per unit of world space are baked into the lightmaps. A higher resolution means more texels to capture fine shading and small geometry details, resulting in crisper, more accurate baked lighting. A lower resolution makes lighting look blurrier or blockier but uses smaller lightmap textures and bakes faster.

Ambient Lighting affects the overall color and intensity of light in the scene, not the detail of the baked textures. Realtime GI handles dynamic lighting and indirect illumination, so it doesn’t govern baked texture detail. Bake-related timing and samples influence how long the bake takes and how many samples are used, not the texture's final resolution. If you need sharper baked lighting in key areas, increase the lightmap resolution; balance with memory and bake time requirements.