I''m writing a 3d game using opengl and I''m having trouble keeping a 2d bitmap such a player score at the same positon on the screen as the camera changes positon. Does any one know how I should go about doing this? or where I could find and example of some code that changes the 3d perspective with out affecting 2d game information on the screen? Help me! Please!

Switch to orto projection when rendering 2d.

glOrtho(0, 640, 480, 0, -2, 2);

this would make:

0, 0 --------------- 640, 0

SCREEN

480, 0 ------------- 640, 480

glVertex2i( 0, 0 ) .....



void glOrtho(
GLdouble left,
GLdouble right,
GLdouble bottom,
GLdouble top,
GLdouble near,
GLdouble far
);

Parameters

- left, right
The coordinates for the left and right vertical clipping planes.

- bottom, top
The coordinates for the bottom and top horizontal clipping planes.

- near, far
The distances to the nearer and farther depth clipping planes. These distances are negative if the plane is to be behind the viewer.