When I try to use the Gamma LUT IP, Vivado 2018.1 requires a license for this IP.
However I cannot find any license/evaluation license in my account.
How can I use the Gamma LUT IP?
In Vivado 2018.1, the Gamma LUT IP is incorrectly dependent on the Test Pattern Generator (TPG) license.
A solution is to use the TPG License which is provided at no cost.
The steps to generate the TPG license are covered in (Xilinx Answer 71085).