diff --git a/src/gallium/auxiliary/util/u_blitter.h b/src/gallium/auxiliary/util/u_blitter.h
index a7dfa47eaca..b9d07efd049 100644
--- a/src/gallium/auxiliary/util/u_blitter.h
+++ b/src/gallium/auxiliary/util/u_blitter.h
@@ -72,13 +72,11 @@ struct blitter_context
     *
     * \param type   Semantics of the attributes "attrib".
     *               If type is UTIL_BLITTER_ATTRIB_NONE, ignore them.
-    *               If type is UTIL_BLITTER_ATTRIB_COLOR, the attributes
-    *               make up a constant RGBA color, and should go
-    *               to the GENERIC0 varying slot of a fragment shader.
-    *               If type is UTIL_BLITTER_ATTRIB_TEXCOORD, {a1, a2} and
-    *               {a3, a4} specify top-left and bottom-right texture
-    *               coordinates of the rectangle, respectively, and should go
-    *               to the GENERIC0 varying slot of a fragment shader.
+    *               If type is UTIL_BLITTER_ATTRIB_TEXCOORD_XY or
+    *               UTIL_BLITTER_ATTRIB_TEXCOORD_XYZW, attrib stores the
+    *               2-component or 4-component texture coordinates of the
+    *               rectangle, and should go to the GENERIC0 varying slot of a
+    *               fragment shader.
     *
     * \param attrib See type.
     *