A fool must now and then be right by change! Concept 1 : What's the difference? A Lit Sphere vs. an Unlit One ========================================= Idea: ===== Lighting and its appropriate use can create very real effects when rendering 3D. The simple example to your left shows a sphere rendered with some light sources enabled. Disable the light sources and see the effect. It does look terrible does'nt it? Enabling / Disabling Lighting ============================= As shown lighting is enabled by calls to : glEnable(GL_LIGHTING) glEnable(GL_LIGHT0) Lighting will not be enabled unless the above calls are made. Here GL_LIGHT0 represents the first light source. OpenGL allows for eight lights in your scene. The constants used to refer to them are GL_LIGHT0, GL_LIGHT1, GL_LIGHT2 and so on. To disable a light source use the following : glDisable(GL_LIGHT0); To disable lighting completely use the following: glDisable(GL_LIGHTING);