Mesa (gallium-0.2): util: add reduced prim helper

[Keith Whitwell]

Module: Mesa
Branch: gallium-0.2
Commit: bc0e00ad42ee651701ef1e211d36ee92acf18d6f
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=bc0e00ad42ee651701ef1e211d36ee92acf18d6f

Author: Keith Whitwell <keithw at vmware.com>
Date:   Mon Jan 19 19:43:21 2009 +0000

util: add reduced prim helper

---

 src/gallium/auxiliary/util/u_prim.h |   16 ++++++++++++++++
 1 files changed, 16 insertions(+), 0 deletions(-)

diff --git a/src/gallium/auxiliary/util/u_prim.h b/src/gallium/auxiliary/util/u_prim.h
index e45e84d..d7c3995 100644
--- a/src/gallium/auxiliary/util/u_prim.h
+++ b/src/gallium/auxiliary/util/u_prim.h
@@ -119,4 +119,20 @@ static INLINE boolean u_trim_pipe_prim( unsigned pipe_prim, unsigned *nr )
 }
 
 
+static INLINE boolean u_reduced_prim( unsigned pipe_prim )
+{
+   switch (pipe_prim) {
+   case PIPE_PRIM_POINTS:
+      return PIPE_PRIM_POINTS;
+
+   case PIPE_PRIM_LINES:
+   case PIPE_PRIM_LINE_STRIP:
+   case PIPE_PRIM_LINE_LOOP:
+      return PIPE_PRIM_LINES;
+
+   default:
+      return PIPE_PRIM_TRIANGLES;
+   }
+}
+
 #endif