Autodesk 12812-051462-9011 User Guide 3 - Page 762

IMPORTANT UV Coordinates on page 6013 and XYZ Coordinates on page 6017 are the only shaders with multiple return values provided with 3ds Max. You might encounter multiple return values in shaders provided with other shader libraries or custom shader code. XYZ Coordinate Shader (mental ray) Material Editor > Any shader with a Coords parameter or other vector value. > Click the shader button. > Material/Map Browser > XYZ Coordinate (3dsmax) Note: Shaders appear in the Browser only if the mental ray renderer is the currently active renderer. This shader is identical to the XYZ Generator shader on page 6013, except that it returns two values instead of one. ■ The XYZ coordinate (same value as XYZ Generator would return) This value is named XYZ. ■ The XYZ coordinate's derivative This value, also a vector, is named dXYZ. When you choose this shader, a Connect Parameter To Shader dialog on page 5981 is displayed, prompting you to choose which of the two values to use. You can later change the choice of value by using the "dot" button to the right of the main shader button. Interface The XYZ Coordinate shader has the same parameters as the XYZ Generator shader. See XYZ Generator Parameters Rollout on page 6014 for a description of the basic settings. Production Shaders The Production Shaders category of advanced mental ray shaders comprises several texture shaders, a lens shader, and two output shaders, all covered in this section. Also part of the Production Shaders library is the Matte/Shadow/Reflection material on page 5622. mental ray Shaders | 6017