Pass contrastExp as calculated in lut to debayer params not the raw contrast. This way we calculate contrastExp once per frame in lut and pass the calculated value into the shaders, instead of passing contrast and calculating contrastExp once per pixel in the shaders. Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org> Reviewed-by: Milan Zamazal <mzamazal@redhat.com> Tested-by: Robert Mader <robert.mader@collabora.com> Tested-by: Hans de Goede <johannes.goede@oss.qualcomm.com> # ThinkPad T14s gen 6 (arm64) ov02c10 + X1c gen 12 ov08x40 Tested-by: Kieran Bingham <kieran.bingham@ideasonboard.com> # Lenovo X13s Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>