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-rw-r--r--src/intel/isl/isl_surface_state.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/src/intel/isl/isl_surface_state.c b/src/intel/isl/isl_surface_state.c
index c7b220b73fb..29ec289a5d9 100644
--- a/src/intel/isl/isl_surface_state.c
+++ b/src/intel/isl/isl_surface_state.c
@@ -537,6 +537,12 @@ isl_genX(surf_fill_state_s)(const struct isl_device *dev, void *state,
#if GEN_GEN >= 7
if (info->aux_surf && info->aux_usage != ISL_AUX_USAGE_NONE) {
+ /* The docs don't appear to say anything whatsoever about compression
+ * and the data port. Testing seems to indicate that the data port
+ * completely ignores the AuxiliarySurfaceMode field.
+ */
+ assert(!(info->view->usage & ISL_SURF_USAGE_STORAGE_BIT));
+
struct isl_tile_info tile_info;
isl_surf_get_tile_info(dev, info->aux_surf, &tile_info);
uint32_t pitch_in_tiles =