Use the AMD Support and Drivers page for Radeon hardware.
requires it, you can ensure it's active by following these steps: Check Compatibility : Use the Windows tool (Press Vertex Shader 5.1 Download Windows 10
(part of Shader Model 5.1) is an enhancement over previous versions (e.g., 4.0, 5.0). It offers: Use the AMD Support and Drivers page for Radeon hardware