A .VSH file is most widely used for vertex shader code that the GPU executes to transform vertices into final screen space using model/world/view/projection matrices and to pass forward helpful information like texture coordinates, normals, and colors, but since `.vsh` isn’t a formal universal standard, some projects may adopt it for non-shader content.

To confirm what your .VSH file really is, the quickest method is to inspect it directly in a text editor and look for shader-like syntax—GLSL hints like `vec3` or `gl_Position`, or HLSL indicators such as `float4x4` along with semantics like `SV_Position`—and then study its folder placement, especially if it appears in directories such as `materials` or alongside files like `.fsh` or `.ps`, while also searching the project for any "vertex shader" or "load shader" references tied to its name.

If a text editor shows garbled data or blank boxes instead of code, the file is probably binary, such as a compiled shader blob or a protected asset used by an engine, so identifying it depends on checking the extension as a clue, examining the binary signature, reviewing surrounding files, and finding where the project loads it, with these steps typically revealing what the `. For more in regards to VSH file structure review our own webpage. VSH` file represents.

The ".vsh" extension acts mostly as a shorthand, not because any authoritative standard requires it, and its "v" for vertex plus "sh" for shader helps people instantly identify that it holds vertex-shader code, especially when matched with something like .fsh for a fragment shader to show how files pair up in the graphics pipeline.

Another reason the ".vsh" extension persists comes from automated shader processing, where asset pipelines or mod loaders depend on extensions to locate and compile shader files, and using a dedicated suffix avoids confusion with normal code; different environments settled on variants like .fx/.shader, and ".vsh" fit well as a simple naming scheme that clearly marks vertex shaders.

Because this is all convention-based, you’ll notice many stylistic differences where teams pick extensions according to shader stage, engine preference, or historical tooling needs, meaning two ".vsh" files might both represent vertex shaders yet contain totally different styles—GLSL syntax, HLSL syntax, or engine-preprocessed code—so ultimately ".vsh" simply aids clarity and tooling rather than serving as a strict standard.