Hello, I can''t define correctly the blending intensity, it''s all the time too transparent did you have any idea how I can correct it ? I do this in InitGL glDepthFunc(GL_LEQUAL); glEnable(GL_DEPTH_TEST); glClearDepth(1.0); glShadeModel(GL_SMOOTH); glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST); glColor4f(1.0f,1.0f,1.0f,0.5f); // changing the alpha doesn''t change the blending intensity glBlendFunc(GL_SRC_ALPHA,GL_ONE); thanks