- Occlusion culling
- NavMesh Surface
- Light Mode: Baked
- Re-bake just one object in light mapping? (leaving the rest of the scene untouched).
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Occlusion cullingOcclusion culling is a process which prevents Unity from performing rendering The process of drawing graphics to the screen or to a render texture. By default, the main camera in Unity renders its view to the screen. More info See in Glossary calculations for GameObjects The fundamental object in Unity scenes, which can represent characters, props, scenery, cameras, waypoints, and more. More info See in Glossary that are completely hidden from view occluded by other GameObjects. Every frame, Cameras A component which creates an image of a particular viewpoint in your scene. The output is either drawn to the screen or captured as a texture. More info See in Glossary perform culling operations that examine the Renderers in the Scene A Scene contains the environments and menus of your game. Think of each unique Scene file as a unique level. In each Scene, you place your environments, obstacles, and decorations, essentially designing and building your game in pieces. More info See in Glossary and exclude cull those that do not need to be drawn. However, frustum culling does not check whether a Renderer is occluded by other GameObjects, and so Unity can still waste CPU and GPU time on rendering operations for Renderers that are not visible in the final frame. Occlusion culling stops Unity from performing these wasted operations. To determine whether occlusion culling is likely to improve the runtime performance of your Project, consider the following:. Occlusion culling generates data about your Scene in the Unity Editor, and then uses that data at runtime to determine what a Camera can see. The process of generating data is known as baking. When you bake occlusion culling data, Unity divides the Scene into cells and generates data that describes the geometry within cells, and the visibility between adjacent cells. Unity then merges cells where possible, to reduce the size of the generated data. To configure the baking process, you can change parameters in the Occlusion Culling windowand use Occlusion Areas in your Scene. At runtime, Unity loads this baked data into memory, and for each Camera that has its Occlusion Culling property enabled, it performs queries against the data to determine what that Camera can see. Note that when occlusion culling is enabled, Cameras perform both frustum culling and occlusion culling. Unity uses the Umbra library to perform occlusion culling. For links to articles with more information on Umbra, see the Additional resources page. Version: Language : English. Unity Manual. Unity User Manual Using an Oblique Frustum. Getting started with occlusion culling. Publication Date:
Light Mode: Baked
The NavMesh A mesh that Unity generates to approximate the walkable areas and obstacles in your environment for path finding and AI-controlled navigation. More info See in Glossary Surface component represents the walkable area for a specific NavMesh Agent type, and defines a part of the Scene A Scene contains the environments and menus of your game. Think of each unique Scene file as a unique level. In each Scene, you place your environments, obstacles, and decorations, essentially designing and building your game in pieces. More info See in Glossary where a NavMesh should be built. The NavMesh Surface component is not in the standard Unity install; see documentation on high-level NavMesh building components for information on how to access it. To use the NavMesh Surface component, navigate to GameObject The fundamental object in Unity scenes, which can represent characters, props, scenery, cameras, waypoints, and more. A Scene can contain multiple NavMesh Surfaces. Use the main settings for the NavMesh Surface component to filter the input geometry on a broad scale. They are dynamic users of the NavMesh, and so do not contribute to NavMesh building. Use the settings in the Debug Visualization section to diagnose any problems encountered during the NavMesh building process. The different tickboxes show each step of the NavMesh building process, including input scene voxelization Input Geometryregion splitting Regionscontour generation Contours and the NavMesh polygons Polygon Meshes. New Advanced Debug Visualization added in Version: Language : English. Unity Manual. Unity User Manual NavMesh building components. NavMesh Modifier. Publication Date: Use for bake settings and matching the NavMesh Agent to proper surfaces during pathfinding. Defines which GameObjects to use for baking. Define the layers on which GameObjects are included in the bake. In addition to Collect Objectsthis allows for further exclusion of specific GameObjects from the bake for example, effects or animated characters. This is set to Everything by default, but you can toggle following options on denoted by a tick or off individually: - Nothing automatically unticks all other options, turning them off - Everything automatically ticks all other options, turning them on - Default - TransparentFX - Ignore Raycast - Water - UI User Interface Allows a user to interact with your application. More info See in Glossary. Select which geometry to use for baking. Agents can move closer to the edge of the physical bounds of the environment with this option than they can with the Render Meshes option. Defines the area type generated when building the NavMesh. Controls how accurately Unity processes the input geometry for NavMesh baking this is a tradeoff inbetween speed and accuracy. Check the tickbox to enable. The default is unchecked disabled. For big open areas, using 1 or 2 voxels per radius speeds up baking. Tight indoor spots are better suited to smaller voxels, for example 4 to 6 voxels per radius. More than 8 voxels per radius does not usually provide much additional benefit. In order to make the bake process parallel and memory efficient, the Scene is divided into tiles for baking. The white lines visible on the NavMesh are tile boundaries. The default tile size is voxels, which provides a good tradeoff between memory usage and NavMesh fragmentation. To change this default tile size, check this tickbox and, in the Tile Size field, enter the number of voxels you want the Tile Size to be.
Re-bake just one object in light mapping? (leaving the rest of the scene untouched).
The process collects the Render Meshes and Terrains The landscape in your scene. More info See in Glossary of all Game Objects which are marked as Navigation Staticand then processes them to create a navigation mesh The main graphics primitive of Unity. Meshes make up a large part of your 3D worlds. Unity supports triangulated or Quadrangulated polygon meshes. Nurbs, Nurms, Subdiv surfaces must be converted to polygons. More info See in Glossary that approximates the walkable surfaces of the level. Building a NavMesh for your scene A Scene contains the environments and menus of your game. Think of each unique Scene file as a unique level. In each Scene, you place your environments, obstacles, and decorations, essentially designing and building your game in pieces. More info See in Glossary can be done in 4 quick steps:. The resulting NavMesh will be shown in the scene as a blue overlay on the underlying level geometry whenever the Navigation Window is open and visible. As you may have noticed in the above pictures, the walkable area in the generated NavMesh appears shrunk. The NavMesh represents the area where the center of the agent can move. However, the point interpretation allows for better runtime efficiency and also allows the designer to see immediately whether an agent can squeeze through gaps without worrying about its radius. Another thing to keep in mind is that the NavMesh is an approximation of the walkable surface. This can be seen for example in the stairs which are represented as a flat surface, while the source surface has steps. This is done in order to keep the NavMesh data size small. The side effect of the approximation is that sometimes you will need to have a little extra space in your level geometry to allows the agent to pass through a tight spot. When baking is complete, you will find a NavMesh asset file inside a folder with the same name as the scene the NavMesh belongs to. More info See in Glossary. Version: Language : English. Unity Manual. Unity User Manual Inner Workings of the Navigation System. NavMesh building components. Publication Date: