Let's run through the entire plane check even when the plane is invisible due to zero constant alpha. This makes for more consistent behaviour since we check the src/dst coordinates, stride etc. against the hardware limits. Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20181018195921.9898-2-ville.syrjala@linux.intel.com Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>