File Extension Database

Open CSO File

CSO files have two different applications registered, namely:

Compressed ISO Disk Image

In this section, the CSO file is an ISO-type compressed disk image file used to archive PlayStation Portable (PSP) games.

The CSO file can incorporate up to nine layers of compression, and is created by programs such as Prometeus and YACC (Yet Another CSO Compressor).

It is important to know that higher levels of compression can cause CSO disk images to load slowly.

Compiled Shader Object File

For this application, the CSO file is a compiled file created by HLSL or what is equal to High Level Shader Language, which is a shader language developed by Microsoft.

The CSO file contains a compiled hatch object, which is derived from an HLSL file, and retains the same name as the HLSL file but appears as a CSO file upon compilation in Microsoft Visual Studio, simply put, the CSO file is the output compiled from HLSL.

In the OpenGL SDK, CSO files can be compiled using the glCompileShader method. glCompileShader compiles the HLSL strings into the shader object.

Software to open a CSO file

Because CSO files are used for totally different utilities, you need to make sure of the CSO file type, and then have one of the following software packages:

PSP ISO Compressor
Yet Another CSO Compressor (Not Available)
High Level Shader Language

How Can I Open CSO File on Windows

We researched and learned that the best way to open CSO file is to find a CSO file in question in Windows OS File Explorer and double click on it to launch the corresponding application.
If a CSO file is not opened in an application and you instead get a "Windows can't open a file" error message you should try looking for an application which can open the file in question.
If you know the application which can open CSO file then run it and see if there is a File->Open main menu option in the application.
If you don't know the application which function as CSO file opener then try to search online for "CSO viewer", "application to open CSO file" or "open CSO file" queries in the search engine you like.
Install the application you found and check if it can open CSO file

How Can I Open CSO File on Mac OS

We recommend to find a CSO file in question in Mac OS Finder and double click on it to launch the corresponding application.
If a CSO file is not opened in a Mac OS application and you instead get a "There is no application set to open the file" error message you can click on "Search App Store" in the error dialog and Mac OS will show you applications compatible with CSO file.
If you know the Mac OS application which can work as CSO file opener you can choose the "Choose Application..." option in the error box to associate the file extension and open CSO file in it.
If you don't know the application which can open CSO file then try to search for "CSO viewer", "application to open CSO file" or "read CSO file" queries in the online search engine you like.
Install the application you found and check if it can read CSO file

How Can I Open CSO File on Android

If you downloaded a CSO file on Android device you can open it by following steps below:

In the Android apps list on your Android device find "My Files" or "File manager" app and tap to start it.
Tap on "Downloads" folder inside the app.
You should see your downloaded CSO file in that folder.
Tap on the file. If Android device supports opening the file you downloaded it will open in the corresponding app.
If file does not open you can look for the corresponding app that can open the file by searching Android App Store for the "CSO".
If you cannot open the file with the apps from Android App Store it is possible that the file could only be opened on desktop platforms such as Windows or Mac OS. Try searching for "CSO viewer", "CSO file reader" online and see if any desktop applications can open it.
It is also possible that the file you downloaded is outdated and is no longer supported.

How to Open CSO File on iPhone or iPad

To open CSO File on iOS device follow steps below:

We advies to open Files app on your iPhone or iPad device. You can find it by swiping down on the home screen and typing "Files" in the search bar.
Tap on the Downloads folder on the Files app home screen.
You will see all files that you recently downloaded. Tap on the CSO file to view it.
If you have the right app that can open it it will automatically launch and open your file.
If you don't have the app which can open it you need to serch Apple app store for "CSO". This way you can find apps which can open CSO files.
If this doesn't help it is possible that your file could be opened only by the desktop application. To find an app which can open it on desktop look for "CSO viewer" or "CSO file" online in your favorite search engine.

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