Determining the version of a shader is crucial for understanding its capabilities and ensuring compatibility with your graphics hardware and rendering pipeline. Shaders are programs that run on the graphics processing unit (GPU) to process graphical data, and different versions of shaders offer varying levels of functionality and support for specific features.
Knowing the shader version allows you to tailor your code to the specific capabilities of the GPU, optimizing performance and ensuring that your shaders run as intended. It also helps you stay up-to-date with the latest advancements in shader technology and take advantage of new features and improvements.