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Crypthor

OpenGL OpenGL ( displaying text ) question ?

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Hi, i need your help with text displaying ( HUD drawing ) This steps are correct ? 1. DrawScene 2. ( turn off DepthTest ) 3. draw text 4. turn back DepthTest on In my programm texts displaying offscreen ! When i''m using glVertex2f( x, y ); x: (-1.0f ; 1.0f ) here is question : if x == -1.0f ( the screen coord. should be equal 0) and if x == 1.0f ; screen coord = 640, why this isn''t work. The screen X in case of x == -1.0f going off screen, why ? how to set that ( -1.0; 1.0 ) will be equal to ( 0; 640; )?? tnx !

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Guest Anonymous Poster
I think you should setup a 2d projection before drawing the hud, and the set it back to 3d again. It looks sometinhg like this:
[its the code i use]
XRES and YRES are global variables.
void SetIn2d()
{
glMatrixMode(GL_PROJECTION);
glLoadIdentity ();
glOrtho (0, XRES,YRES,0, -99999, 99999);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity ();
glDisable (GL_DEPTH_TEST);
glDisable (GL_CULL_FACE);
}

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