You're looking for information on Swift Shader 2.0 and how to download it.
Step 2: Back up the original DLLs.
Rename the existing d3d9.dll or d3d8.dll to d3d9_backup.dll. This allows you to revert if something goes wrong.
DirectX 9.0 Compatibility: Supports many games designed for the DX9 era.
Where to get it
Do not click sponsored links on Google. Instead, search for "SwiftShader 2.0 GitHub releases" or look for community-verified uploads on Reddit's r/emulation or r/lowendgaming.
To get a legitimate copy, stick to these repositories: