The field is in multiples of 4 like regular QPitch.
---
 src/intel/isl/isl_surface_state.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/intel/isl/isl_surface_state.c 
b/src/intel/isl/isl_surface_state.c
index fc7e1ba..ed964bd 100644
--- a/src/intel/isl/isl_surface_state.c
+++ b/src/intel/isl/isl_surface_state.c
@@ -385,7 +385,7 @@ isl_genX(surf_fill_state_s)(const struct isl_device *dev, 
void *state,
        * in units of samples on the main surface.
        */
       s.AuxiliarySurfaceQPitch =
-         isl_surf_get_array_pitch_sa_rows(info->aux_surf);
+         isl_surf_get_array_pitch_sa_rows(info->aux_surf) >> 2;
       s.AuxiliarySurfaceBaseAddress = info->aux_address;
       s.AuxiliarySurfaceMode = isl_to_gen_aux_mode[info->aux_usage];
 #else
-- 
2.5.0.400.gff86faf

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