Hi, in order to use bumpmapping as seen in lesson 22 you need the GL_EXT_texture_env_combine extension. The voodoo 3/3000 doesent seem to support this extension (cant be found using glGetString(GL_EXTENSIONS)). So how to do (if possible easy) bumpmapping with a voodoo3? Maybe use GL_EXT_texture_env_add? Anybody got any ideas? Thanks!