To view the following attributes in the Attribute Editor, select an object and expand the Turtle section in its shape node.
Select TURTLE > Add Subdivision Attributes, to add the following attributes to the Attribute Editor window.
When enabled, Turtle uses subdivision. Turtle supports polygons with a maximum of 5 edges.
Controls the amount of subdivision that occurs. A higher value produces more polygons and a better result, but also uses more memory and increases render times.
When enabled, the corners of a open mesh remain sharp. A sphere is a closed mesh, a plane is an open mesh.
Select TURTLE > Add Render Stats Attributes to add the following attributes to the Attribute Editor window. This section sets general parameters for how objects interact with light.
The normals of a mesh can be smoothed at render time. The normals are then calculated as the average of all vertex normals at the same vertex. A threshold can be used to only include normals which have a similar direction. The threshold is given as the maximum angle in degrees, between two normals, under which they will be averaged.
For example, when using pre-tessellated displacement you often need a very high tessellation setting to get a smooth looking surface. By smoothing the normals on faces that don't have too sharp edges, you can get a smooth looking surface with much lower tessellation settings, saving both memory and render time.
When calculating surface transfer from a mesh with face normals you will not get a continuous sampling since the sampling is performed along the normals of the mesh. Enabling Smooth Normals produces a continuous sampling without having to alter the actual normals on the model.
Lets the object affect final gather calculations.
When enabled, the object keeps its final gather samples in RAM-memory between successive frames in an animation.
When enabled, the final gather solution is smoothed for the object. When disabled, the final gather smoothing is disabled, which might save render time in some situations.
If disabled, the object will be invisible for occlusion rays. Therefore, it will not cast any occlusion on other objects when the ilrOccSampler is used.
If disabled, the object will not receive any occlusion from other objects when the ilrOccSampler is used.
Enable Bias Shadow Rays to reduce shadow line artifacts on low-resolution geometry.
Selects the filter to use when querying the cache during rendering. None returns the closest cache point (unfiltered).
Lets you override the settings of the monte carlo attributes. For a full description of these attributes, see Global Illumination Tab.
Lets you override the settings of the global photon map attributes. For a full description of these attributes, see Global Illumination Tab.
Sets the number of photons to use when calculating global illumination effects. A higher number gives higher quality but takes a longer time to calculate.
Sets the maximum search radius to use when searching for photons during lighting calculations for global illumination effects. If the Photon Radius is set to r, photons within a sphere of radius r around the sample point will be used to calculate the light. If the Photon Radius is set to 0.0 a value will be calculated automatically based on the size of the scene. The automatic value will be printed out during rendering, which is a good starting value if the point spacing needs to be adjusted.
Lets you override the settings of the caustics attributes. For a full description of these attributes, see Global Illumination Map.
Influences the number of photons to use when calculating caustics effects, a higher number take more photons into account. Default value is 1.0.
Sets the maximum search radius to use when searching for photons during lighting calculations for caustics effects. If the Photon Radius is set to r, photons within a sphere of radius r around the sample point will be used to calculate the light. The radius is given in Maya units.
Select TURTLE > Add Bake Attributes to add the following attributes to the Attribute Editor window.
When enabled, lets you to override the settings of the texture baking attributes Bake Res X, Bake Res Y, and Bake Set Scale for a particular object. For a complete explanation of these attributes see