From 10d81f466794c61c11225c94b2125bf2dd23748e Mon Sep 17 00:00:00 2001
From: Brian Paul <brianp@vmware.com>
Date: Mon, 31 Aug 2009 19:26:00 -0600
Subject: mesa: added _mesa_is_stencil_format()

---
 src/mesa/main/image.c | 16 ++++++++++++++++
 src/mesa/main/image.h |  3 +++
 2 files changed, 19 insertions(+)

diff --git a/src/mesa/main/image.c b/src/mesa/main/image.c
index d77c593ac7..006a55116b 100644
--- a/src/mesa/main/image.c
+++ b/src/mesa/main/image.c
@@ -688,6 +688,22 @@ _mesa_is_depth_format(GLenum format)
 }
 
 
+/**
+ * Test if the given image format is a stencil format.
+ */
+GLboolean
+_mesa_is_stencil_format(GLenum format)
+{
+   switch (format) {
+      case GL_STENCIL_INDEX:
+      case GL_DEPTH_STENCIL:
+         return GL_TRUE;
+      default:
+         return GL_FALSE;
+   }
+}
+
+
 /**
  * Test if the given image format is a YCbCr format.
  */
diff --git a/src/mesa/main/image.h b/src/mesa/main/image.h
index 20459a5f1e..a082f37457 100644
--- a/src/mesa/main/image.h
+++ b/src/mesa/main/image.h
@@ -63,6 +63,9 @@ _mesa_is_index_format(GLenum format);
 extern GLboolean
 _mesa_is_depth_format(GLenum format);
 
+extern GLboolean
+_mesa_is_stencil_format(GLenum format);
+
 extern GLboolean
 _mesa_is_ycbcr_format(GLenum format);
 
-- 
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