Autodesk 12812-051462-9011 User Guide 3 - Page 701

TIP If you have a transparent object such as glass, and have self reflect/refract turned on, you don't have to make the object 2-sided on page 7893. The raytracer sees back faces when exiting refractive objects. Reflect/Refract Material IDs When on, the material reflects effects assigned to material IDs in the renderer's G-buffer on page 7991 on or off. Default=on. By default, Raytrace material and Raytrace map reflect effects assigned to a material's ID, so that G-buffer effects are not lost. For example, if a raytraced object reflects a lamp made to glow with the Video Post Glow filter (Lens Effects Glow), the reflection glows as well. Trace Mode group With options in this group, you select whether to cast reflected or refracted rays. Auto Detect If assigned to the material's Reflection component, the raytracer will reflect. If assigned to Refraction, it will refract. If you assign Raytrace to any other component, you have to manually specify whether you want reflected rays or refracted rays. (Default.) NOTE Auto Detect might fail when you use Raytrace map in a material with a strong bump map. When you use a strong bump map, choose one of the explicit options. Reflection Casts reflected rays off the object's surface. Refraction Casts refracted rays into or through the object's surface. NOTE Raytrace reflects and transmits the IDs in material effects channel on page 5348 (G-buffer on page 7991), so it can create glowing reflections, and so on. Local Exclude Click to display the local Include/Exclude dialog on page 5519. An object that is excluded locally is excluded from this map only. TIP Using exclusion lists is one of the best and simplest ways to speed up the raytracer. Background group Use Environment Settings Respects the environment settings of the current scene. Color Swatch Overrides the environment settings with the specified color. 5956 | Chapter 19 Material Editor, Materials, and Maps