diff --git a/src/broadcom/compiler/v3d_compiler.h b/src/broadcom/compiler/v3d_compiler.h
index 43c4d0fbacc..8b5805652ba 100644
--- a/src/broadcom/compiler/v3d_compiler.h
+++ b/src/broadcom/compiler/v3d_compiler.h
@@ -986,6 +986,8 @@ struct v3d_vs_prog_data {
         /* Value to be programmed in VCM_CACHE_SIZE. */
         uint8_t vcm_cache_size;
 
+        bool writes_psiz;
+
         /* Maps the nir->data.location to its
          * nir->data.driver_location. In general we are using the
          * driver location as index (like vattr_sizes above), so this
diff --git a/src/broadcom/compiler/vir.c b/src/broadcom/compiler/vir.c
index c59a8aac434..288a0d692d4 100644
--- a/src/broadcom/compiler/vir.c
+++ b/src/broadcom/compiler/vir.c
@@ -792,6 +792,9 @@ v3d_vs_set_prog_data(struct v3d_compile *c,
         if (prog_data->uses_iid)
                 prog_data->vpm_input_size++;
 
+        prog_data->writes_psiz =
+            c->s->info.outputs_written & (1 << VARYING_SLOT_PSIZ);
+
         /* Input/output segment size are in sectors (8 rows of 32 bits per
          * channel).
          */