From 97225a96a6f7032273c225e525678d3dc9433cc8 Mon Sep 17 00:00:00 2001
From: Neil Roberts <neil@linux.intel.com>
Date: Thu, 3 Jun 2010 15:06:47 +0100
Subject: [PATCH] Add _cogl_texture_2d_externally_modified

_cogl_texture_2d_externally_modified is a function specific to the
CoglTexture2D texture backend that should be called whenever the
contents of the texture are modified without the backend knowing about
it. It simply marks the mipmap tree as invalid.
---
 clutter/cogl/cogl/cogl-texture-2d-private.h | 11 +++++++++++
 clutter/cogl/cogl/cogl-texture-2d.c         |  9 +++++++++
 2 files changed, 20 insertions(+)

diff --git a/clutter/cogl/cogl/cogl-texture-2d-private.h b/clutter/cogl/cogl/cogl-texture-2d-private.h
index fc9db8148..33c71efe0 100644
--- a/clutter/cogl/cogl/cogl-texture-2d-private.h
+++ b/clutter/cogl/cogl/cogl-texture-2d-private.h
@@ -67,4 +67,15 @@ _cogl_texture_2d_new_from_bitmap (CoglHandle       bmp_handle,
                                   CoglTextureFlags flags,
                                   CoglPixelFormat  internal_format);
 
+/*
+ * _cogl_texture_2d_externally_modified:
+ * @handle: A handle to a 2D texture
+ *
+ * This should be called whenever the texture is modified other than
+ * by using cogl_texture_set_region. It will cause the mipmaps to be
+ * invalidated
+ */
+void
+_cogl_texture_2d_externally_modified (CoglHandle handle);
+
 #endif /* __COGL_TEXTURE_2D_H */
diff --git a/clutter/cogl/cogl/cogl-texture-2d.c b/clutter/cogl/cogl/cogl-texture-2d.c
index a7bcbf322..3c33a7557 100644
--- a/clutter/cogl/cogl/cogl-texture-2d.c
+++ b/clutter/cogl/cogl/cogl-texture-2d.c
@@ -320,6 +320,15 @@ _cogl_texture_2d_new_from_bitmap (CoglHandle       bmp_handle,
   return _cogl_texture_2d_handle_new (tex_2d);
 }
 
+void
+_cogl_texture_2d_externally_modified (CoglHandle handle)
+{
+  if (!cogl_is_texture_2d (handle))
+    return;
+
+  COGL_TEXTURE_2D (handle)->mipmaps_dirty = TRUE;
+}
+
 static int
 _cogl_texture_2d_get_max_waste (CoglTexture *tex)
 {