diff --git a/src/gallium/drivers/radeonsi/si_shader.h b/src/gallium/drivers/radeonsi/si_shader.h
index b4f0c42c14f..9a53b40128f 100644
--- a/src/gallium/drivers/radeonsi/si_shader.h
+++ b/src/gallium/drivers/radeonsi/si_shader.h
@@ -496,6 +496,10 @@ struct si_shader_info {
     * texunit + 1.
     */
    uint8_t writes_1_if_tex_is_1;
+
+   /* frag coord and sample pos per component read mask. */
+   uint8_t reads_frag_coord_mask;
+   uint8_t reads_sample_pos_mask;
 };
 
 /* A shader selector is a gallium CSO and contains shader variants and
diff --git a/src/gallium/drivers/radeonsi/si_shader_info.c b/src/gallium/drivers/radeonsi/si_shader_info.c
index 483777e0f22..65e00668143 100644
--- a/src/gallium/drivers/radeonsi/si_shader_info.c
+++ b/src/gallium/drivers/radeonsi/si_shader_info.c
@@ -557,6 +557,12 @@ static void scan_instruction(const struct nir_shader *nir, struct si_shader_info
          if (intr->intrinsic == nir_intrinsic_load_barycentric_at_sample)
             info->uses_interp_at_sample = true;
          break;
+      case nir_intrinsic_load_frag_coord:
+         info->reads_frag_coord_mask |= nir_ssa_def_components_read(&intr->dest.ssa);
+         break;
+      case nir_intrinsic_load_sample_pos:
+         info->reads_sample_pos_mask |= nir_ssa_def_components_read(&intr->dest.ssa);
+         break;
       case nir_intrinsic_load_input:
       case nir_intrinsic_load_per_vertex_input:
       case nir_intrinsic_load_input_vertex: