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# Q100341: Tile rendering in Katana

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#### SUMMARY

This article describes how to render an image in multiple tiles using Katana in Batch Mode, and how to subsequently stitch the separate tiles together to form one complete image.

#### MORE INFORMATION

When an image is rendered in tiles, it is divided horizontally and vertically into smaller images referred to as tiles. These tiles are written out as separate files and then assembled into the final image.

In Katana, an image can be tile rendered by rendering each tile in Batch Mode from the command line, using the `--tile-render` option.

Once all tiles have been rendered, the `--tile-stitch` command is used to assemble them, followed by the `--tile-clean` command to delete the rendered separate tiles and leave only the final image.

The following is an example of terminal commands used to render 2x2 tiles for an image, then stitch them together and clean up the process:

    katana --batch --katana-file=/tmp/clean.katana --render-node=Render -t 1 --tile-render=0,0,2,2
    katana --batch --katana-file=/tmp/clean.katana --render-node=Render -t 1 --tile-render=0,1,2,2
    katana --batch --katana-file=/tmp/clean.katana --render-node=Render -t 1 --tile-render=1,0,2,2
    katana --batch --katana-file=/tmp/clean.katana --render-node=Render -t 1 --tile-render=1,1,2,2

    katana --batch --katana-file=/tmp/clean.katana --render-node=Render -t 1 --tile-render=0,0,2,2 --tile-stitch --tile-clean

NOTE: It is possible to run the `--tile-stitch` command without using `--tile-clean`, however `---tile-clean` will currently only work if it is preceded by `--tile-stitch`.

For more information on the syntax of these batch render options, please see the Katana Online Help on Batch Mode.