Enabled – Enables the Wrapper options. Main Generated GI Mult. – A multiplier for the amount GI generated by the material. Received GI Mult. – A multiplier for the amount GI received by the material. Generated Caustics Mult. – A multiplier for the amount of caustics generated by the material. Received Caustics Mult. – A multiplier for the amount of caustics received by the material. Subdivs Mult. – A multiplier for the subdivisions of all secondary ray tracing done for the particular surface. Matte Properties Alpha Contribution – Determines the appearance of the object in the alpha channel of the rendered image. A value of 1.0 means the alpha channel is derived from the transparency of the base material. A value of 0.0 means the object does not appear in the alpha channel at all and shows the alpha of the objects behind it. A value of -1.0 means that the transparency of the base material is cut out from the alpha of the objects behind. Matte objects are typically given an alpha contribution of -1.0. Note that this option is independent of the Matte surface option (i.e. a surface can have an alpha contribution of -1.0 without being a matte surface). Generate Render Elements – When enabled, V-Ray generates zDepth, velocity, extra tex and multi matte render element for matte objects. When this check box is disabled V-Ray does not generate any render elements for matte objects. Matte Surface – Makes the material appear as a matte material, which shows the background, instead of the base material, when viewed directly. Note that the base material is still used for things like GI, caustics, reflections, etc. Shadows – When enabled, makes shadow visible on the matte surface. Affect Alpha – When enabled, makes shadows affect the alpha contribution of the matte surface. Areas in perfect shadow produce white alpha, while completely unoccluded areas produce black alpha. Shadow Tint – An optional tint for the shadows on the matte surface. Shadow Brightness – An optional brightness parameter for the shadows on the matte surface. A value of 0.0 makes the shadows completely invisible, while a value of 1.0 shows the full shadows. Reflection Amount – Shows the reflections from the base material. Refraction Amount – Shows the refractions from the base material. GI Amount – Determines the amount of GI shadows. Advanced Options Dive To Wrapper Node – Press this button to dive into the Complex Material network of nodes and select the Wrapper Node. |