How is the OpenCL function utilised with DxO PhotoLab?

This information applies to version(s): 1, 2, 3, 4, 5, 6

When activated in the preferences, OpenCL is used for rendering export images, as well as for displaying RAW previews when the zoom level is above 75%. This is only the case if our benchmark has determined that OpenCL performance is superior to CPU processing.