Autodesk 12812-051462-9011 User Guide 3 - Page 979

■ Sometimes when you render objects that have no thickness, or an Extrude modifier with zero thickness, the mental ray renderer generates rendering artifacts that appear as streaks. In some cases, you can fix this by turning on Force 2-Sided on the Render Setup dialog's Common Parameters rollout. If the streaks persist, give the object or the Extrude modifier a nonzero thickness. See also: ■ Sampling Quality Rollout (mental ray Renderer) on page 6272 ■ Camera Effects Rollout (mental ray Renderer) on page 6283 ■ Caustics and Global Illumination Rollout (mental ray Renderer) on page 6306 ■ Final Gather Rollout (mental ray Renderer) on page 6295 ■ Shadows & Displacement Rollout (mental ray Renderer) on page 6292 ■ Rendering Algorithms Rollout (mental ray Renderer) on page 6277 ■ Translator Options Rollout (mental ray Renderer) on page 6316 ■ Distributed Bucket Rendering Rollout (mental ray Renderer) on page 6326 Procedures To use the mental ray renderer: 1 Choose Rendering menu > Render Setup. The Render Setup dialog opens. 2 On the Common panel, open the Assign Renderer rollout, then click the "..." button for the Production renderer. The Choose Renderer dialog is displayed. 3 On the Choose Renderer dialog, highlight mental ray Renderer and then click OK. Now, when you render, the Render Setup dialog appears with the mental ray controls. You can choose to render the scene with the built-in mental ray renderer, or simply to translate the scene and save it in an MI on page 8044 file that you can render later, perhaps on a different system. Controls for choosing whether to render, save to an MI file, or both, are on the Translator Options on page 6316 rollout. 6234 | Chapter 20 Rendering