1 files changed, 21 insertions, 0 deletions
diff --git a/src/glsl/ir.cpp b/src/glsl/ir.cpp
index dad58deeb97..99dceacf85f 100644
--- a/src/glsl/ir.cpp
+++ b/src/glsl/ir.cpp
@@ -1778,3 +1778,24 @@ ir_rvalue::as_rvalue_to_saturate()
 
    return NULL;
 }
+
+
+unsigned
+vertices_per_prim(GLenum prim)
+{
+   switch (prim) {
+   case GL_POINTS:
+      return 1;
+   case GL_LINES:
+      return 2;
+   case GL_TRIANGLES:
+      return 3;
+   case GL_LINES_ADJACENCY:
+      return 4;
+   case GL_TRIANGLES_ADJACENCY:
+      return 6;
+   default:
+      assert(!"Bad primitive");
+      return 3;
+   }
+}