Hey, guys, I seek arround in the forum for a while a got some source running up (mention it''s delphi :=) ) But it seems like the orgin of the screen (0/0) is at the left bottom... is that normally in OpenGl or is something wrong here? If not, any possbilitiy to translate the screen so, that the left top is the orgin? thx in advise, Phobeus --- glMatrixMode(GL_PROJECTION); glLoadIdentity; glOrtho(0,800,0,600,1,0); glMatrixMode(GL_MODELVIEW); glPolygonMode(GL_FRONT,GL_FILL); glLoadIdentity(); glDisable(GL_DEPTH_TEST); glDisable(GL_CULL_FACE); glTranslatef(0,0,-0.1); glEnable(GL_BLEND); glBindtexture(GL_TEXTURE_2D,texture[2]); glBegin(GL_QUADS); glTexCoord2f(0,0); glVertex2d(10,0); glTexCoord2f(1,0); glVertex2d(200,0); glTexCoord2f(1,1); glVertex2d(200,200); glTexCoord2f(0,1); glVertex2d(10,200); glEnd; glEnable(GL_CULL_FACE); glDisable(GL_BLEND); glEnable(GL_DEPTH_TEST); glPolygonMode(GL_FRONT,GL_FILL);