Agfdhyk

I'm trying to create an opengl program by reading a specific shader, which is nothing else than simple text.

This file is located directly within the src folders.

If I read my shader from my main application, no problems slash, backslash, File.separator or File.separatorChar:

• "ec/core/render/shaders/gl3/texture.vert"


• 
  "ec/core/render/shaders/gl3\texture.vert" double for escape


• "ec/core/render/shaders/gl3" + File.separator + "texture.vert"


• "ec/core/render/shaders/gl3" + File.separatorChar + "texture.vert"

but if I'm trying to load the shader from a dependency util:

        val fullShader = when {

            root.endsWith('/') || root.endsWith('\') -> "$root$shader"

            else -> root + '/' + shader // here

        }

then only the slash works. All the others options fire a NPE once createShaderFromPath is called and codeflow reaches this:

        val lines = ClassLoader.getSystemResourceAsStream(path).use {

            println(path)

            InputStreamReader(it).readLines()  // NPE

        }

Why?