Zwift uses the OpenGL API to render the game and your computer's GPU must support a minimum of OpenGL 3.1 to meet the game's requirements. If you start the game and receive a warning message about your drivers only supporting OpenGL 2.1, it means one of two things:
- Your drivers are out of date.
- Your computer's GPU is below Zwift's minimum requirements.
An easy way to check is to go to your computer manufacturer's website and update your drivers to the newest version. If you're still receiving the warning, it's likely that your computer doesn't meet the minimum requirements.
For more information on determining if your computer meets Zwift's minimum requirements, see our FAQ.