The great thing about Iray, is that we can create realistic looking renders without having to muck around too much with lighting. Another really big advantage of Iray, is that we can get pretty good render results in a fairly short amount of time, if we have a good nVidia graphics card.
In order to change the classification string of a particular shading node, you must edit the mentalrayCustomNodeClass.
To check the classification string of a shading node, use the following MEL command: In addition, if your shader links against mayabase.
Add the following line to your Maya.
This file defines the classification string for mental ray shaders. This swatch appears in the Hypershade and in the Attribute Editor if you define a custom AE template.
Viewing your custom mental ray shader in the scene view in shaded mode The scene view attempts to implement a simple Phong shading model to display custom shaders.
The hardware shader looks for specific attributes to fulfill the requirements of the Phong model. At a minimum, the requirements for the Diffuse channel should be satisfied. The Diffuse channel of the Phong model are driven by any of these attributes if they exist on the shader if more than one exist, then the first of the list is used.
The attribute must be of type color. This attribute must be a color. These must be scalar float attributes. It must be a scalar float value. Example shader For an example of a shader that implements all of the above, refer to:Nov 08, · Writing mental ray Shaders If this is your first visit, be sure to check out the FAQ by clicking the link above.
You may have to register before you . Mental ray is a rendering engine that is built into Maya (and possible Max as well). I don't know a whole lot about C4D, but I believe it uses V-Ray (although 3ds Max might use it now too), which is a great rendering engine.
For more information on the syntax for writing custom mental ray shaders, see mental ray shader language extensions. File swatch vs.
Interactive swatch The classification string of the shading node determines whether the swatch is a file swatch or an interactive swatch. The whole point about this lens shader business is to cast a seminal viewing ray using mi_trace_eye().
And since this function requires its last two arguments to be in internal space, we make sure it gets what it wants with lines 22 and Rusty metal shader for mental ray maya for Maya.
Rusty metal shader for mental ray maya. Details; The shader is % procedural which means that it uses only 3d-textures and that (mental ray ). To open the file in maya check "Ignore Version" in options/5(11).
For Maya mental ray Render Settings, see the following topics: Render Settings: mental ray tabs in Maya About the Render Settings mental ray tabs in Maya Set up your render using mental ray for Maya Set up mental ray scene passes The mental ray tabs consists of five tabs: Passes tab, Features tab, Quality tab, Indirect Lighting tab, and Options tab.