I am bitmap masking. My problem is I made a crosshair and can see all parts of crosshair bitmap. I use a white background bitmap with black as the actuall parts of the crosshair as the mask. I use a green crosshair with black background as the image that is masked. My code: //inside DrawGLScene // Crosshair glDisable(GL_DEPTH_TEST); glLoadIdentity(); glEnable(GL_BLEND); glTranslatef(0.0f,0.0f,-25.0f);//Translate into screen glBlendFunc(GL_DST_COLOR,GL_ZERO);//Blend screen color With zero (Black) glBindTexture(GL_TEXTURE_2D, texture[16]);//crosshair_mask.bmp glBegin(GL_QUADS); // Start Drawing A Textured Quad glTexCoord2d(1,1); glVertex2f(1,1); glTexCoord2d(1,0); glVertex2f(1,-1); glTexCoord2d(0,0); glVertex2f(-1,-1); glTexCoord2d(0,1); glVertex2f(-1,1); glEnd(); glBlendFunc(GL_ONE,GL_ONE); glBindTexture(GL_TEXTURE_2D,texture[1]);//crosshair.bmp glBegin(GL_QUADS); glTexCoord2d(1,1); glVertex2f(1,1); glTexCoord2d(1,0); glVertex2f(1,-1); glTexCoord2d(0,0); glVertex2f(-1,-1); glTexCoord2d(0,1); glVertex2f(-1,1); glEnd();