Starting object path – Allows to specify a starting path in the Alembic file; only objects below that path are rendered. The path may start with ABC/ or it may be omitted. Recompute bounding box – Enabling this forces V-Ray to recompute the bounding box for the geometry before rendering. When this is off, V-Ray uses the bounding box specified in the Alembic file. However, sometimes these bounding boxes are not correct, and in that case the rendering is also incorrect. To avoid such issues, enable this option. Note that this option might slow down the rendering. Instancing – When enabled, if there are multiple instances of an object it is loaded once and the memory is reused. Compute normals – This option allows you to force smooth normals on the geometry in case they were not originally smoothed. Smooth angle – When the Compute normals option is enabled, this specifies the angle below which normals are smoothed. Flip normals – Reverses the direction of the normals. Preview faces – Allows you to specify how many faces are going to be used to show a preview of the proxy in the view port. Preview hairs – Allows you to specify how many splines are going to be used to show a preview of the proxy hair in the view port. Hair width multiplier – This multiplier allows you to control the hair width during rendering. Preview particles – Allows you to specify how many particles to show in the viewports. Particle width multiplier – Controls the size of the particles when rendering. Velocity multiplier – Controls the length of the motion blur when rendering. Subdivide all meshes – Subdivide the meshes before rendering using the OpenSubdiv library. Subdivision level – The number of subdivision levels. Subdivide UVs – Allows you to choose whether or not the UVs of the object are subdivided at the borders. Preserve geometry borders – Specifies whether geometry borders are preserved or not. Preserve map borders – Specifies how to handle subdivisions of UV coordinates at UV seams when Subdivide UVs is enabled. The possible values are: None – UVs are always subdivided regardless of whether they are on a UV seam or not. Internal – Only preserve UVs if they are on an internal UV seam. All – Does not subdivide UVs on UV seams. |