Somehow I knew that my search for what algorithm GPUs use for sRGB conversion would turn up an answer from nprofile1qy2hwumn8ghj7un9d3shjtnddaehgu3wwp6kyqpqykddq7nmfd8cd0hupl8fnsmmuhtg55zusm6de4fjecmrhsx4x97qs0t3wn (nprofile…t3wn)
https://medium.com/@tomforsyth/the-srgb-learning-curve-773b7f68cf7a