vray的材质和贴图技术（Material and texturing techniques for vray）.docVIP

vray的材质和贴图技术（Material and texturing techniques for vray） Fourth lesson: material and mapping techniques for VRay I. VRay package material VRay package material is mainly used for global control material light, caustic and invisible. That is, through the Vray wrapping material, you can convert standard material to the type of material supported by the VRay renderer. A material is too bright or too overflow in the scene, nesting this material. You can control the generation / acceptance of GI values. Most are used to control materials with self luminous properties and too high saturation. [basic material] - used to set nested material [global illumination] - sets the global light and its intensity [receive global illumination] - sets the reception of global light and its intensity [] - set the material produced defocus is caustics. [] - set the material receiving defocusing whether to receive caustics. [] - set or caustics multiplier receiving caustics strength [matte object] - sets the objects surface as a material with a shaded mask property that renders the object invisible when rendered, but the object still appears in reflection / refraction, and still produces indirect illumination. [Alpha allocation] - sets the strength of the object displayed in the Alpha channel. When the light value is 1, the object is displayed normally in the Alpha channel. When the value is 0, the object is not displayed in the Alpha channel completely. [shadow] - controls whether the mask object receives shadow effects produced by direct illumination. [influence Alpha] - sets whether direct illumination affects the Alpha channel of the mask object. [color] - the shadow color that is used to control objects that are wrapped in material. [brightness] - used to control the intensity of mask objects receiving shadows. [reflection value] used to control the degree of reflection of a mask object. [refractive index] - used to control the degree of refraction of a mask. [global light number] - u