Re-normalizing
Re-normalizing means resetting the length of each normal in the map to 1. A normal mapping shader takes the three color channels of a normal map and combines them to create the direction and length of each pixel's normal. These normals are then used to apply the scene lighting to the mesh. However if you edit normal maps by hand or if you blend multiple normal maps together this can cause those lengths to change. Most shaders expect the length of the normals to always be 1 (normalized), but some are written to re-normalize the normal map dynamically (for example, 3ds Max's Hardware Shaders do re-normalize)." |
9:39 PM
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- Samantha Bratton left the Main Room. ( 9:45 PM ) -