CS 431/636 - Advanced Rendering Techniques

Add refractive transmission to your Hall shading model.

• k_s - specular coefficient
• I_Lj - color of light j
• C_s - specular color of object
• cos(φ) - (H ⋅ N)
• n - specular highlight (shininess) parameter
• k_d - diffuse coefficient
• C_d - diffuse color of object
• cos(ϑ) - (N ⋅ L)
• k_t - transmissive coefficient
• C_t - transmissive color of object
• cos(α) - (T ⋅ L)
• m - transmissive highlight parameter
• I_r - color value returned by reflected ray
• I_t - color value returned by refracted ray
• I_a - color of ambient light
• k_s + k_d+ k_t = 1

Create a scene that contains at least two spheres and three non-box triangle meshes, at least one of which is refractive, and at least one white light. Also add a "floor" that your shadows can be seen on. Be sure to position your objects in way that something is seen through your refractive object(s). Also use adaptive supersampling with two levels of subdivision.

Post your image (in TIFF or PNG format) in its native resolution (i.e. don't set their size in html) on a web site, with the associated computation time and shading parameter values.

Tell me what file contains your refraction code.

Upload your software to WebCT.

E-mail the URL of the web site to david AT cs DOT drexel DOT edu before the deadline (6/5/09).

You can find SMF triangle mesh models here.

Last modified on May 24, 2007.