![]() They are also specific to the mesh they were generated on, applying a NM from one figure to another can produce strange results.įor Firefly the level of detail may be dependent on the shading rate as textures are averaged across a micro-polygon. Normal maps require software to generate, as already mentioned they are useful for transferring detail from a high res model to a lower res model. The difference between the two is a bump map contains a height value that the render engine uses to modify the base normal where as the normal map contains a vector (XYZ = RGB) baked in when the map was generated. This allows the render engine to calculate a unique normal for each pixel of the bitmap giving the impression of higher res detail. The angle of a surface is stored as the normal vector, each face of a mesh has a normal and without any mapping the render engine will use this to calculate the output pixel intensity.īump and normal maps both generate detail by modifying the base normal of a surface using a uv mapped bitmap that overlays the base mesh. A surface pointing directly at a light will receive more light energy than a surface turned away. How bright a surface appears in a render is determined by its angle to the light. One the PhysicalSurface panel, you use the connecting node name NormalMap. In the Material Room, if you use the PoserSurface panel, you connect your normal map to the Gradient_Mode Node and use the Tangent Space Normal Map setting. ![]() Those that I mentioned are programs that come to mind, however, there are much more available if you conduct a search. And there is an online site which can convert your maps and allow you to save the results to your hard drive, also free (). I believe they might be offering a free version. ShaderMap is another program which can also create multiple maps although it is not free but modestly priced. ![]() Materialize is another free software which can create several different type maps including normal maps. GIMP has a plugin which is easy to use, I believe Blender might be capable of doing it also, although there is a steep learning curve. ![]() There are several programs which can create normal maps from diffuse texture, some freeware and others not. ![]()
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