/// <summary>
/// Creates a new shader.
/// </summary>
/// <param name="gl">GL interface containing shader entry points.</param>
/// <param name="shaderType">Type of OpenGL shader to instantiate.</param>
/// <param name="code">Shader code.</param>
/// <exception cref="ArgumentNullException">Thrown if <see cref="gl"/> is null, or if <see cref="code"/> is null or empty.</exception>
protected Shader(IOpenGL30 gl, ShaderType shaderType, string code)
{
if(gl == null)
throw new ArgumentNullException("gl");
if(string.IsNullOrEmpty(code))
throw new ArgumentNullException("code");
_gl = gl;
Handle = gl.CreateShader((uint)shaderType);
if(Handle == 0)
throw new NoHandleCreatedException();
_shaderType = shaderType;
this._code = code;
}