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title: "Render Elements in Solaris"
canonical: "https://documentation.chaos.com/space/VRAYHOUDINI/113279862/Render%20Elements%20in%20Solaris"
format: markdown
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This page provides information on V-Ray render elements (rendervars) in Solaris. Overview V-Ray render elements are added in Solaris through a Render Var LOP. Each render element requires a unique LOP and a specific Source Name that determines the type of V-Ray render element used. Once a render element is added, its parameters appear under a designated rollout in the V-Ray tab of the Render Var LOP. The parameters are similar to those of the various V-Ray render element nodes in the out network. Specific render elements such as the Beauty pass have a designated V-Ray LOP – V-Ray Standard Render Vars LOP. For more information, see the  V-Ray Standard Render Vars  page. Light Path expressions (LPEs) that have an equivalent V-Ray Light Select type are automatically translated to Light Selects. Such an example is the Indirect Diffuse Light Select type which corresponds to the C<RD>.+L Light Path Expression. You need to set the VRAY_USD_LPE_TO_LS environment variable to enable the automatic translation  with the following values: 0 – conversion is disabled 1 – conversion for the LIGHT types is enabled 2 – conversion for all types (LIGHT and SHADOW) For more information about LPEs, see the  Light Path Expressions  and  Advanced Light Path Expressions  pages. Workflow Create a  Render Var LOP  by right-clicking > Rendering > Render Var, and then navigate to its Standard tab. Type the name of the render element in the  Source Name . Note that you need to use a special naming convention. To find the proper name of each V-Ray render element, see the  table  below. Keep the  Source Type  as  Raw . This determines how the renderer interprets the source name. Set the  Data Type  and  Format  to  color4f . The Data Type defines what type of data is necessary for the V-Ray render element and determines the channel names in the output image. The Format defines the format of the data when saving the image. The V-Ray render element parameters appear in the LOP’s  V-Ray tab . There you can enable Deep Output, Filtering, or other settings that are available for the render element. By default, the parameters are set to do nothing and you need to override them in order to use them with the corresponding render element. See the  Creating and Setting Attributes section  below. All existing Render Var LOPs are collected with a Render Product LOP before output. Create a  Render Product LOP  with a right-click > Rendering > Render Product. In the  Ordered Render Vars , set the path to the Render Var that will be used in the final rendering. If there are multiple Render Vars and you want to include them all, use a * wildcard. The Render Product LOP is then used in combination with the  Render Settings LOP  for the final render. Click the image to enlarge it. Creating and Setting Attributes The parameters that correspond to a USD attribute have a pop-up menu that controls how the LOP node authors the attribute. Set or Create  – Sets the attribute to a given value, regardless of whether the attribute previously existed or not. Set if Exists  – Sets an attribute to the given value only if it previously existed. Use this option to make sure the attribute is set on primitives of the correct type. Block  – Makes the attribute appear to not exist so it takes on its default value. Do Nothing  – Does not affect the attribute, i.e. does not create or change the attribute in any way. Naming Render Element Source Name V-Ray Albedo Render Element albedo V-Ray Alpha Render Element alpha V-Ray Atmosphere Render Element atmosphere V-Ray Background Render Element  background V-Ray Bump Normals Render Element sampler:bumpNormal V-Ray Caustics Render Element caustics V-Ray Coat Render Element coat V-Ray Coat Glossiness Render Element coatGlossiness V-Ray Coat Reflection Render Element coatReflection V-Ray DR Bucket Render Element drBucket V-Ray Defocus Amount Render Element defocusAmount V-Ray Denoiser Render Element  denoiser V-Ray Diffue Render Element  diffuse V-Ray Diffuse Filter Render Element diffuseFilter V-Ray Direct Light Render Element directLighting V-Ray GI Render Element gi V-Ray Material ID Render Element materialID V-Ray Matte Shadow Render Element  matteShadow V-Ray Metalness Render Element metalness V-Ray Multi Matte Render Element multiMatte V-Ray Noise Level Render Element noiseLevel V-Ray Normals Render Element sampler:normal V-Ray Object ID Render Element nodeID V-Ray Object Slect Render Element objectSelect V-Ray Raw Diffuse Filter Render Element rawDiffuseFilter V-Ray Raw Direct Light Render Element rawDirectLighting V-Ray Raw GI Render Element rawGI V-Ray Raw Reflection Render Element rawReflection V-Ray Raw Reflection Filter Render Element rawReflectionFilter V-Ray Raw Refraction Render Element rawRefraction V-Ray Raw Refraction Filter Render Element rawRefractionFilter V-Ray Raw Shadow Render Element rawShadow V-Ray Raw Total Light Render Element rawTotalLighting V-Ray Refflection Render Element reflection V-Ray Reflection Filter Render Element reflectionFilter V-Ray Reflection Glossiness Render Element reflectionGlossiness V-Ray Reflection IOR Render Element reflectionIOR V-Ray Refraction Render Element refraction V-Ray Refraction Filter Render Element refractionFilter V-Ray Refraction Glossiness Render Element  refractionGlossiness V-Ray Render ID Render Element renderID V-Ray SSS Render Element sss V-Ray Sample Rate Render Element sampleRate V-Ray Self Illumination Render Element selfIllumination V-Ray Shadow Render Element shadow V-Ray Sheen Render Element sheen V-Ray Sheen Glossiness Render Element sheenGlossiness V-Ray Sheen Reflection Render Element sheenReflection V-Ray Specular Render Element specular V-Ray Toon Render Element toon V-Ray Total Lighting Render Element totalLighting V-Ray Unclamped Color Render Element unclampedColor V-Ray Velocity Render Element velocity V-Ray World Normals Render Element worldNormal V-Ray World Positions Render Element worldPositions V-Ray ZDepth Render Element zDepth Next: V-Ray Standard Render Vars