Texture Mapping

My next feature was implementing diffuse texture mapping. In this image, in addition to the mirror and glass spheres, we see a diffuse billiard ball (although it should be partially specular) and a diffuse earth. The texture mapping fits in mostly well with the global illumination except for a weird artifact where the right side of the ceiling has a large square section that is a separate color then the rest of the ceiling. I am currently looking into why this might be an issue.

Stay tuned for my shadow photon optimization coming next...