gallium: create helper for swrast+xlib combination

Several targets may want to reuse this code.  It's pretty simple, not
sure if this is really a win.

2 files changed, 7 insertions, 5 deletions

diff --git a/src/gallium/state_trackers/glx/xlib/xm_api.c b/src/gallium/state_trackers/glx/xlib/xm_api.c
index b8647d71c6..568bc6e962 100644
--- a/src/gallium/state_trackers/glx/xlib/xm_api.c
+++ b/src/gallium/state_trackers/glx/xlib/xm_api.c
@@ -63,7 +63,7 @@
 #include "pipe/p_screen.h"
 #include "pipe/p_context.h"
 
-#include "xm_winsys.h"
+#include "xm_public.h"
 #include <GL/glx.h>
 
 
diff --git a/src/gallium/state_trackers/glx/xlib/xm_winsys.h b/src/gallium/state_trackers/glx/xlib/xm_public.h
index 648f1c90ef..ac6a8ffb27 100644
--- a/src/gallium/state_trackers/glx/xlib/xm_winsys.h
+++ b/src/gallium/state_trackers/glx/xlib/xm_public.h
@@ -29,11 +29,13 @@
 #ifndef XM_WINSYS_H
 #define XM_WINSYS_H
 
-struct pipe_context;
-struct pipe_screen;
-struct pipe_surface;
-struct xlib_drawable;
+struct xm_driver;
 
+/* This is the driver interface required by the glx/xlib state tracker. 
+ */
+struct xm_driver {
+   struct pipe_screen *(*create_pipe_screen)( Display *display );
+};
 
 extern void
 xmesa_set_driver( const struct xm_driver *driver );