1 files changed, 11 insertions, 0 deletions
diff --git a/src/gallium/auxiliary/util/u_format.h b/src/gallium/auxiliary/util/u_format.h
index 84f16d503d7..dc777c35c19 100644
--- a/src/gallium/auxiliary/util/u_format.h
+++ b/src/gallium/auxiliary/util/u_format.h
@@ -544,6 +544,17 @@ util_format_is_depth_and_stencil(enum pipe_format format)
           util_format_has_stencil(desc);
 }
 
+
+/**
+ * Calculates the MRD for the depth format. MRD is used in depth bias
+ * for UNORM and unbound depth buffers. When the depth buffer is floating
+ * point, the depth bias calculation does not use the MRD. However, the
+ * default MRD will be 1.0 / ((1 << 24) - 1).
+ */
+double
+util_get_depth_format_mrd(enum pipe_format format);
+
+
 /**
  * Return whether this is an RGBA, Z, S, or combined ZS format.
  * Useful for initializing pipe_blit_info::mask.