OpenGL does generate error codes.
see glGetError()
If you do ANYTHING wrong, an error code is generated.
When glGetError()=GL_NONE there is no error, otherwise it's an error code that matches some other symbolic constant such as GL_INVALID etc. You should be checking the errors to make sure your display was set up right etc and there was nothing that went wrong. If you keep tabs on the errors it might clue you in as to what exact instruction(s) are causing problems.
see glGetError()
If you do ANYTHING wrong, an error code is generated.
When glGetError()=GL_NONE there is no error, otherwise it's an error code that matches some other symbolic constant such as GL_INVALID etc. You should be checking the errors to make sure your display was set up right etc and there was nothing that went wrong. If you keep tabs on the errors it might clue you in as to what exact instruction(s) are causing problems.