title: What is OpenGL's method for assigning texture IDs?
body: <p>I have a function that loads a texture, and returns the newly generated <code>GLuint</code>. I need to know what I should return if it fails to load the texture. So if <code>glGenTextures</code> starts assigning texture IDs at 1, I could return <code>GL_FALSE</code>, etc.</p>