: This is a "make it work" tool, not a "make it fast" tool. You will likely be playing at 10–20 FPS, but for many, that is better than not playing at all. : It won't help you run modern AAA titles (like Cyberpunk 2077 ); it is strictly for reviving older software. Final Thoughts
This article is for educational and preservation purposes. Always respect software licenses and copyright laws when downloading legacy software.
Make sure you renamed the file exactly to d3d9.dll . Also, run the game in Windows 7 or Windows XP compatibility mode.
SwiftShader is a high-performance CPU-based implementation of Direct3D 9/10/11 and OpenGL ES 2.0/3.0. Version 2.1 is a very old release (dating back to around 2007–2009), originally from TransGaming Inc. (later open-sourced by Google).
Let’s set realistic expectations. SwiftShader 2.1 will turn your office PC into a gaming rig. Here’s what you can anticipate:
You could replace the system d3d9.dll in C:\Windows\System32\ , but this will break all other 3D applications. Avoid this method.