Sampling color is a trickier problem that sampling coverage. To compute coverage, we only had to determine if the sample point was inside the triangle. However, computing the color of the triangle at a sample point, we need to determine what point on the triangle's surface covers the sample.

Sampling color is a trickier problem that sampling coverage. To compute coverage, we only had to determine if the sample point was inside the triangle. However, computing the color of the triangle at a sample point, we need to determine what point on the triangle's surface covers the sample.