Using OpenColorIO

Setting up OpenColorIO

By default, the OpenColorIO features are not immediately usable. A config .ocio file is required alongside a number of supporting files such as lookup tables.

The OpenColorIO website (http://www.opencolorio.org) contains some sample configurations that provide a number of suitable input and output profiles, including several Academy Colour (ACES) configurations.

To configure OpenColorIO:

1. Download your preferred configuration and decompress it into a folder.
2. Rename the configuration file to config.ocio if it is not already named that.
3. From the home screen, tap Settings and navigate to the Colour section.
4. Select Choose OCIO Package, then navigate to the folder where your config.ocio file is stored.
5. Tap Open.

OpenColorIO will now be configured. Open any 32-bit document to preview additional viewing options.

Using OpenColorIO

OpenColorIO is exposed in Affinity apps through two methods:

• The View Tool will contain additional preview options that only become available with a valid OpenColorIO configuration. These can be used to achieve a non-destructive, colour managed workflow.
• An OCIO adjustment layer (see OCIO Adjustment) can be added to losslessly convert between colour spaces. You can have multiple OCIO adjustment layers within a document, which allows you to accommodate composite layers from different colour spaces. An example layer stack might be (in hierarchical order):
  • OCIO Adjustment—from Utility - Linear - sRGB back to Role - scene_linear
  • sRGB Pixel Layer—composite element
  • OCIO Adjustment—from Role - scene_linear to Utility - Linear - sRGB
  • Pixel Layer—original layer