This works because the real-time lightmaps only store indirect lighting (meaning there are no sharp direct shadows). For example, a detailed tiled floor with separate charts for each tile takes up an unnecessarily high number of texels, but joining them into a single chart results in far fewer texels. The time taken to do the precompute phase is proportional to the number of texels you feed in. This makes lighting more consistent across the model, makes the texel distribution more even, and avoids wasting texels on small details.
Its purpose is to simplify the UV unwrap, which reduces the chart count (and thus texel count). The feature is intended to optimize charting for real-time GI only. Note that disabling this option does not allow the authored UVs to flow straight to Enlighten repacking is still applied. Optimize Realtime UVs enables Enlighten’s UV optimization feature. See in Glossary contains an option called Optimize Realtime UVs. The Mesh Renderer A mesh component that takes the geometry from the Mesh Filter and renders it at the position defined by the object’s Transform component. The only difference is the chart packing: Asset source: Lee Perry Smith, VizArtOnline Optimizing Realtime UVs If the Smoothing Angle is set to 180 degrees, no cuts are made, and the UVs are the same as they were in Autodesk® Maya®. When packing with a 40-degree Smoothing Angle, the hard angles in the model are preserved, and extra charts are created: Asset source: Lee Perry Smith, VizArtOnline Otherwise, both GI and regular shading may have undesired lighting effects. In order to get good results with imported normals, you need to manually make the cuts along hard edges, and pay attention to how the DCC is inserting duplicate vertices.
To avoid this, you can choose to author and import normals (see documentation on Normal maps to learn more about surface normals). If you set Normals to Calculate, breaks are made wherever the angle between adjacent triangles exceeds the Smoothing Angle value. Tangents appear when a key is selected in the Curves view, or when a key is selected in the Curve Editor. See in Glossary, Tangents One of two handles that controls the shape of the animation curve before and after a key. Unity uses normals to determine object orientation and apply shading.
The Mesh Importer settings that relate to this are Normals The direction perpendicular to the surface of a mesh, represented by a Vector. UVs in Autodesk® Maya®Ī high smoothing angle does not preserve hard cuts in the model, and both the shading and GI look different as a result. The image below shows an example of this. See in Glossary, because the UVs are used directly and not repacked. Lightmaps are overlaid on top of scene geometry to create the effect of lighting. However, these cuts normally go unnoticed when you bake the lightmap A pre-rendered texture that contains the effects of light sources on static objects in the scene. These duplicated vertices create extra islands (unconnected groups) in your UVs. See in Glossary importer might introduce extra vertices in places where the Mesh has hard edges. Nurbs, Nurms, Subdiv surfaces must be converted to polygons. Unity supports triangulated or Quadrangulated polygon meshes. Meshes make up a large part of your 3D worlds. However, the DCC or Unity Mesh The main graphics primitive of Unity. By default, a chart is defined by a set of connected vertices. See in Glossary, it is very important to understand how UV charts are detected.
This section explains why.īecause real-time UVs are repacked by Enlighten The lighting system by Geomerics used in Unity for computing global illumination (GI). It’s important to note that when importing from Autodesk® Maya®, your UVs may not look exactly the same, even if you untick the Optimize Realtime UVs checkbox. See in Glossary, simulation, texturing and animation tools for visual effects artists, modellers and animators (see It is often used by Unity developers for advanced graphics work, which is then imported into Unity. By default, the main camera in Unity renders its view to the screen.
AUTODESK MAYA 2018 MANUAL SOFTWARE
Autodesk® Maya® is a 3D computer animation software by Autodesk, with powerful modeling, rendering The process of drawing graphics to the screen (or to a render texture).
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