Autodesk 62205-051408-9001 User Guide - Page 908

B Combustion and 3ds Max Several Combustion features use this extra information. Although the information for these channels is called a layer in 3ds Max, it is not related to layers in a composite. When a 3D scene contains objects that occlude each other, a 3D Post filter may need information about what is behind each object. For example, if you remove a tree from a forest scene using G-Buffer Extract, you want the rest of the forest to appear behind it, not a black occlusion. To set an object to render extra information when rendered: 1. In 3ds Max, select and right-click the object, then choose Object Properties from the menu that appears. 2. In the Rendering Control group box of the Object Properties dialog, enable Render Occluded Objects. For example, you can have more than one Z buffer layer. The first layer shows the Z values of the first objects you see in the scene. Where objects are hidden, the second layer shows the Z values of the objects behind the ones in the first layer. This continues until you reach the 'back' of the scene. Render Elements Rollout on 3ds Max Render Scene Dialog 3. Make sure that the number of Object IDs under G-Buffer Object Channel is sufficient for the scene you are rendering. By default the number is set to 10. Using Render Elements Another way to use Combustion with 3ds Max is to render 3ds Max scene elements, such as Refraction and Shadows, as individual image files in a composite and generate a Combustion workspace. This feature does not rely on the extra information in G-Buffer channels. Instead, the individual render passes are saved as separate files and then a After you select render elements, you can choose to have 3ds Max generate a Combustion workspace. 892