code: public static JCGLBlendEquation blendEquationFromGL(
      final int e)
    {
      switch (e) {
        case GL14.GL_FUNC_ADD:
          return JCGLBlendEquation.BLEND_EQUATION_ADD;
        case GL14.GL_MAX:
          return JCGLBlendEquation.BLEND_EQUATION_MAXIMUM;
        case GL14.GL_MIN:
          return JCGLBlendEquation.BLEND_EQUATION_MINIMUM;
        case GL14.GL_FUNC_REVERSE_SUBTRACT:
          return JCGLBlendEquation.BLEND_EQUATION_REVERSE_SUBTRACT;
        case GL14.GL_FUNC_SUBTRACT:
          return JCGLBlendEquation.BLEND_EQUATION_SUBTRACT;
        default:
          throw new UnreachableCodeException();
      }
    }
docs: Convert blend equations from GL constants.
  
  @param e The GL constant
  
  @return The value