The two images shown in Figure 3 below are both OpenGL scenes, which contain one plane and one spot light each. Explain the difference you see between the two images, why are they different? a) aUT...

answer for question 6a and 6b

Extracted text: The two images shown in Figure 3 below are both OpenGL scenes, which contain one plane and one spot light each. Explain the difference you see between the two images, why are they different? a) aUT spott swing GUT spot Figure 3: Lighting b) Explain how the Phong illumination model is extended in the global illumination ray-tracing algorithm to shade the box's surfaces. You may use a diagram to illustrate your answer.