Mesa (master): gallium: comment/document usage flags

[Brian Paul]

Module: Mesa
Branch: master
Commit: 9f6990120ace5725e16ee2dd9a59da76fe1041cc
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=9f6990120ace5725e16ee2dd9a59da76fe1041cc

Author: Brian Paul <brianp at vmware.com>
Date:   Wed Feb 24 08:59:49 2010 -0700

gallium: comment/document usage flags

---

 src/gallium/include/pipe/p_screen.h |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)

diff --git a/src/gallium/include/pipe/p_screen.h b/src/gallium/include/pipe/p_screen.h
index 48625bf..e4a9222 100644
--- a/src/gallium/include/pipe/p_screen.h
+++ b/src/gallium/include/pipe/p_screen.h
@@ -121,7 +121,9 @@ struct pipe_screen {
 
    void (*texture_destroy)(struct pipe_texture *pt);
 
-   /** Get a surface which is a "view" into a texture */
+   /** Get a 2D surface which is a "view" into a texture
+    * \param usage  bitmaks of PIPE_BUFFER_USAGE_* read/write flags
+    */
    struct pipe_surface *(*get_tex_surface)(struct pipe_screen *,
                                            struct pipe_texture *texture,
                                            unsigned face, unsigned level,