FX CSO
File conversion

Convert FX to CSO

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Is it possible to convert FX to CSO?
Yes - FX converts to CSO.

Compile the .fx to a binary compiled shader object (.cso/.fxo) using fxc.exe: fxc /T fx_2_0 /Fo out.fxo shader.fx for DX9, or /T fx_5_0 for DX11. The .cso is the GPU-ready bytecode that ships with a game.

Also to CSO: PBP

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Tested on macOS, Windows & Linux
Last verified Oct 2026

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How to convert FX to CSO

Converting a .FX file to .CSO lets you open the content in software that prefers the .CSO format, though some details may change compared with the original. We are still putting together the list of programs that handle .FX files.

A full step-by-step guide for this conversion is on the way; the information above is drawn straight from our database.

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