   2D x,y-positioned quads with GLUT..how?
  Hiho,here is what I want do do: drawing a 2D Quad (2 vertices) with a function like draw2DPixel(10,20) at X,Y-position 10,20 if I have a window of 320x240. I want to use GLUT for it (want to have it portable) and it has to be exact. How can this be done? All I used so far was 3D Stuff with 3D projection and 3D matrix-modes. Is 2D orthographic projection the right way? Thanks for ideas!Axel 
  May be you mean point sprites?   "C lets you shoot yourself in the foot rather easily. C++ allows you to reuse the bullet!"  ;  No..not Point Sprites. I used them a lot in 3D...I want to have full 2D like DirectX or a simple paint programm. If I set a pixel (a pixel will be a quad) at 10x and 10y then it has to be there, relative to the screen resolution without any perspective errors.Sounds difficult...? I dont know how to explain it else. Open GL is used for 2D CAD Programms too, this functionality is what I want. I can set Text with orthographic projection, works this mode with text only?   [edited by - axelfr on August 1, 2003 1:09:29 PM];  Ortho mode doesn''t only work with text, it works with any of the other gl commands as well.  Instead of using the glVertex3f() function to define points, use glVertex2f().  This should be what you want. 