Hello, I need to show an image (2D), in an OpenGL window, without any distorsion, and moreover, I must add graphics in front of this image (like two perpendicular lines crossing at the mouse position), what do you advise me? Raster, or texture mapping? And what about the graphics?
Thanks a lot…
Antoine Rennuit.
using textures usually is quicker. u need to set up an orthogonal projection matrix so 0,0 corresponds to the bottomleft of screen + screenwidth,screenheight is the topright. how to do this? check the faq. link first page