Hi @AlexLee, While Parallels strives to provide the best Mac virtualization platform, Parallels Desktop for Mac is subject to a host operating system and its limitations. Unfortunately, the documentation for the macOS graphics driver API required to implement OpenGL support in macOS and Linux guest systems does not exist, meaning we are currently unable to create this functionality. We maintain a good relationship with Apple and have discussed the aforementioned concerns with them. We closely monitor any API Reference documentation changes at developer.apple.com in the hopes of receiving the required instructions from Apple, but we do not have them as of yet. Please rest assured that we do want to implement better graphics support for guest systems, and once we have the necessary documentation, we will create the functionality to do so. You may add titles of the OpenGL 3 applications, that you want to run in Parallels.
