The UV Tiles  node is similar to the Tile Grid Image node. The difference is the Tile Grid Image node provides a Border mode for determining texture map behavior when the texture maps fall outside the specified UV space whereas the UV Tiles node provides an Empty Tile Color parameter for determining texture map behavior when the texture maps fall outside the specified UV space. Both nodes define UDIM-like offsets in OctaneRender®. Also known as U-Dimension, the primary reason for UDIMs is image texture resolution, where specific grids are used for different parts of an object, such as a head and body specified in different UV space and texture sets. Both nodes will reference UDIMs as a sequentially numbered image sequence, making working with said maps in applications like Nuke or After Effects a very simple process, since these maps are treated like typical rendered frames in these applications.


There are two different naming syntaxes for the tiled textures:

  • name_%u_%v.ext  (U is the row and V is the column number — they can start from 1.)
  • name_%i.ext (i is an index of images and should start at 1001.)  Note that file naming is depending to row size.

After selecting the UV Tiles node, go to the Node Inspector and click on the Load Images icon to select and load images into the grid (figure 1).

UV Tiles Parameters

Power- Controls image brightness. Lower values cause the image to appear darker. When used as a bump map, this setting alters the bump height on the surface.

Color Space - Specifies the color space for the imported image.

Legacy Gamma - Controls input image luminance, and tunes or color-corrects images if needed, however, this parameter is only used when the Color Space is set to Linear sRGB+Legacy.

Invert - Inverts the texture values.

Linear RGB Invert - Inverts the image after conversion to linear sRGB color space.

Gamma - Controls the input image luminance, and it also tunes or color-corrects the image.

Invert - Inverts the texture values.

UV Transform - Positions, rotates, and scales the surface texture.

Projection - Accepts OctaneRender® Projection nodes. If nothing is connected to this input, the image texture uses the surface's UV texture coordinates by default. This also changes the UV set if the original surface contains more than one UV set. For more details, see the OctaneRender Projection Node topic in this manual.

Empty Tile Color - Specifies the color to use when a tile is empty.