Milan Zamazal
026ed62739
A colour correction matrix (CCM) is applied like this to an RGB pixel vector P: CCM * P White balance must be applied before CCM. If CCM is used, software ISP makes a combined matrix by multiplying the CCM by a white balance gains CCM-like matrix (WBG). The multiplication should be as follows to do it in the correct order: CCM * (WBG * P) = (CCM * WBG) * P The multiplication order in Lut software ISP algorithm is reversed, resulting in colour casts. Let's fix the order. Signed-off-by: Milan Zamazal <mzamazal@redhat.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Tested-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>