teaching machines

CS 455 Lecture 13 – Spotlight and Beyond Color Textures

March 5, 2013 by Chris Johnson. Filed under cs455, lectures, spring 2013.

Before Class

Spotlight

• Watch http://youtu.be/s7NbEbNJo28.
• Watch http://youtu.be/AA-HzRc3vyI.
• Watch http://youtu.be/4zAk0F0-4QA.
• Read chapter 3, section Simulating a Spotlight, pages 94-97.

Beyond Color Textures

• Watch http://youtu.be/U7RdV4X_Ml4.
• Watch http://youtu.be/W3vkBV-NgL8.
• Watch http://youtu.be/K76qRuyPUiI.
• Watch http://youtu.be/C3hVk47G5V4.
• Read chapter 4, sections Applying Multiple Textures and Using Alpha Maps, pages 111-116. 

In Class

• Write a renderer that casts a spotlight on a scene, but instead of illuminating the objects, it pulls the objects albedo out of a 1-D texture, which is indexed by the dot product of the light direction and negated spot direction. A couple of 1-D textures are in W455.