Autodesk 12812-051462-9011 User Guide 3 - Page 978

Now the Render Setup dialog contains 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 rollout on page 6316. Rendering with the mental ray Renderer Rendering menu/main toolbar > Render Setup > Render Setup dialog > Common panel > Assign Renderer rollout > Choose mental ray Renderer as the Production renderer. To use the mental ray translator and renderer, you must first choose mental ray as the production renderer, as described the "Procedures" section below. Once you have chosen mental ray rendering, the Render Setup dialog displays panels and rollouts that control the mental ray renderer. Common Parameters Rollout When you render with mental ray, controls on the Render Setup dialog > Common panel > Common Parameters rollout remain the same, and function just as they do with the default scanline renderer. Limitations The mental ray renderer does not support certain rendering features, as described here. ■ Output dithering options aren't supported (in Main menu > Customize > Preferences > Preference Settings dialog > Rendering panel > Output Dithering group). ■ The mental ray renderer does not fully support G-buffer options in post processing and image file output. The mental ray renderer generates all required G-buffer channels, but does not include transparency information. If two transparent objects overlap each other, the mental ray render generates information only for the frontmost object. ■ When you use a bitmap as an environment (that is, as a background), the mental ray renderer samples and filters it. This can result in unwanted blurring. To prevent background blurring, render the scene against a solid-color background, and then composite the rendered scene with the background image. mental ray Renderer | 6233