BLEND_CONTROL_DEPENDENT
background[0] |= BLEND_CONTROL_DEPENDENT;
background[1] |= BLEND_CONTROL_DEPENDENT;
background[2] |= BLEND_CONTROL_DEPENDENT;
background[2] |= BLEND_CONTROL_DEPENDENT;
background[i] |= BLEND_CONTROL_DEPENDENT;
background[2] |= BLEND_CONTROL_DEPENDENT;