Typically this is done by using a look-up table to convert the 8-bit gamma encoded intensities to 10-bit (or more) linear intensities. You can use the same look

Typically this is done by using a look-up table to convert the 8-bit gamma encoded intensities to 10-bit (or more) linear intensities. You can use the same look-up table for R, G, and B. Alpha should be linear.