Autodesk 12812-051462-9011 User Guide 3 - Page 971

Global Raytrace Engine Options group These options are comparable to the local options on Extended Parameters rollout on page 5502 and the Raytracer Controls rollout on page 5506. Their setting affects all Raytrace materials and Raytrace maps in the scene, unless you set local overrides. Enable Raytracing Turns the raytracer on or off. Default=on. Even with raytracing off, Raytrace material and Raytrace map still reflect and refract the environment, including both the environment map for the scene, and the environment map assigned to the Raytrace material. Raytrace Atmospherics Turns the raytracing of atmospheric effects on or off. Atmospheric effects include fire, fog, volume light, and so on. Default=on. Enable Self Reflect/Refract Turns self reflection/refraction on or off. Default=on. Can an object reflect itself? For example, a teapot's body reflects the teapot's handle, but a sphere will never reflect itself. If you don't need this effect, you can improve render time by turning off this toggle. TIP If you have a transparent object such as glass, and Enable Self Reflect/Refract is 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. Render objects inside raytraced objects Toggles the rendering of objects inside raytraced objects. Default=on. Render atmospherics inside raytraced objects Toggles the rendering of atmospheric effects inside raytraced objects. Atmospheric effects include fire, fog, volume light, and so on. Default=on. Enable Color Density / Fog Effects Toggles the color density and fog features. Acceleration Controls Opens the Raytracing Acceleration Parameters dialog on page 5518. 6226 | Chapter 20 Rendering