Autodesk 12812-051462-9011 User Guide 3 - Page 988

IMPORTANT To see the mental ray rollouts for lights, you must use mental ray Preferences on page 7787 to enable mental ray extensions. These rollouts appear only on the Modify panel, not on the Create panel. Camera Enhancements On the Parameters rollout on page 5210, a "Depth Of Field (mental ray)" choice appears on the Multi-Pass Effect drop-down list to support the mental ray renderer's depth-of-field effects. To use this, turn on both Enable in the camera's Multi-Pass Effect group (default=off), and Depth Of Field on the Render Setup dialog > Renderer panel > Camera Effects rollout on page 6283. You can also assign mental ray lens, output, and volume shaders to cameras. These controls are also on the Render Setup dialog > Camera Effects rollout. (This rollout also contains some contour-shading controls.) NOTE When you use the mental ray renderer, reflected or refracted light rays do not always respect a camera's clipping planes (set in the Clipping Planes group of the Parameters rollout). Also, large clipping-plane values can cause poor quality in the rendering of shadow maps. To fix this, narrow the clipping range or switch to ray-traced shadows. Material Editor Enhancements The Material Editor works as it does with the default scanline renderer. Certain materials and maps, or some of their controls, aren't supported by the mental ray renderer; see 3ds Max Materials in mental ray Renderings on page 6239. By default, the Material Editor sample slots use the currently active renderer: typically this is either the default scanline renderer or the mental ray renderer. You assign the renderer for sample slots with the Render Setup dialog > Common panel > Assign Renderer rollout on page 6135. When mental ray extensions are enabled (using mental ray Preferences on page 7787) and the mental ray renderer is active, the Material Editor displays these additional mental ray features: ■ A mental ray Connection rollout on page 5385 lets you add mental ray shaders to 3ds Max materials. ■ When you click a material's Type button, the Material/Map Browser displays additional mental ray materials on page 5543. ■ When you click a map or shader button, the Material/Map Browser displays additional mental ray shaders on page 5974. mental ray Renderer | 6243