It looks like you're trying to find a genuine download link for Pixel Shader 3.0 (often searched as "pixel shader 30") on Windows 10 64-bit.
Warning: It is extremely slow and usually results in unplayable frame rates (1–5 FPS). ⚠️ Avoiding Scams Avoid any website that asks you to: Disable your Antivirus to install a "Shader Fix." pixel shader 30 verified download windows 10 64 bit
What are Pixel Shaders?
Installation Instructions