Opening VSO Files

The VSO file type is primarily associated with DirectX.

VSO	File extension: VSO
	File type:	compiled vertex shader

What is a VSO file?

VSO files mostly belong to DirectX by Microsoft. VSO is a file extension for compiled vertex shaders. A vertex shader is a small assembly-language program containing color definitions, lighting effects, and data variables for the x and y coordinates of 2D objects and the x, y, and z coordinates for 3D objects. Vertex shaders VSO files are used by DirectX programs. When enabled, a VSO file replaces the transforms and lighting-computations of the fixed-function pipeline for vertices. SceniX, a 3D scene management engine by Nvidia also uses VSO files to store compiled vertex shaders. The VSO file extension is also associated with data files created using DreamPlan Home Design, a 3D home design/redecoration tool.

How to open VSO files

You need a suitable software like DirectX to open a VSO file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your VSO file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a VSO file directly in the browser:. Just drag the file onto this browser window and drop it.

Online VSO Text Viewer

Choose your .vso file to analyze

or drag and drop it here

Online File Viewer

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VSO file extension format:

If you know the file format, you can also find out how to open or edit the file. The initial characters of a file are called signature, sometimes also referred to as "magic bytes". The signature can be used to infer the file format. File extension, signature and file format must match; otherwise errors will occur when the file is opened. So a detailed analysis of a file is vital in order to determine the format and the associated program. Our evaluation of the VSO files is as follows:

As a file extension, VSO isn't very common and is used by different programs with different formats. But the following two file formats are common:

• 25% of all VSO files use the same file format, which can be identified by the letters "01 01 FE FF" at the beginning. If you open these files in a text editor, you will see only illegible characters. Most of these files are 96 bytes to 1 KB in size. The file type was primarily used more than 10 years ago. An example of a file name is blur.vso or nuke_cloud.vso. Files like these are about nuke, model, skin, shadow, cloud and motion.
• 15% of all VSO files start with the magic bytes DXBC, which are always the first bytes of this file format. The content consists of illegible binary data, which can only be read and interpreted by the associated programs. The files are on average 3 KB in size and range from 1 KB to 11 KB. The files contain the following words: DXBC and RDEF. Such VSO files store data about light, scenario, lighting and debug.

The remaining 60% of all VSO files are different files with different signatures, often e.g. config, MCVS and PSVSSv. Tagged as font, glsl, texture, report or reset. You can get all the details of your VSO file by dragging it onto this page or by clicking the button "Choose your .vso file to analyze" above.