From 191863995a6be24fcf67642a81463e5e7df3b02a Mon Sep 17 00:00:00 2001
From: David Rose <david@ddrose.com>
Date: Mon, 9 Jan 2012 23:47:25 +0000
Subject: [PATCH] CallbackGraphicsWindow for Windows

---
 panda/src/wgldisplay/wglGraphicsPipe.cxx | 14 ++++++++++++++
 panda/src/wgldisplay/wglGraphicsPipe.h   |  1 +
 2 files changed, 15 insertions(+)

diff --git a/panda/src/wgldisplay/wglGraphicsPipe.cxx b/panda/src/wgldisplay/wglGraphicsPipe.cxx
index 18d5209257..73ce3383b9 100644
--- a/panda/src/wgldisplay/wglGraphicsPipe.cxx
+++ b/panda/src/wgldisplay/wglGraphicsPipe.cxx
@@ -234,6 +234,20 @@ make_output(const string &name,
   return NULL;
 }
 
+////////////////////////////////////////////////////////////////////
+//     Function: wglGraphicsPipe::make_callback_gsg
+//       Access: Protected, Virtual
+//  Description: This is called when make_output() is used to create a
+//               CallbackGraphicsWindow.  If the GraphicsPipe can
+//               construct a GSG that's not associated with any
+//               particular window object, do so now, assuming the
+//               correct graphics context has been set up externally.
+////////////////////////////////////////////////////////////////////
+PT(GraphicsStateGuardian) wglGraphicsPipe::
+make_callback_gsg(GraphicsEngine *engine) {
+  return new wglGraphicsStateGuardian(engine, this, NULL);
+}
+
 
 ////////////////////////////////////////////////////////////////////
 //     Function: wglGraphicsPipe::format_pfd_flags
diff --git a/panda/src/wgldisplay/wglGraphicsPipe.h b/panda/src/wgldisplay/wglGraphicsPipe.h
index 20af81b45f..ed631e3a55 100644
--- a/panda/src/wgldisplay/wglGraphicsPipe.h
+++ b/panda/src/wgldisplay/wglGraphicsPipe.h
@@ -44,6 +44,7 @@ protected:
                                          GraphicsOutput *host,
                                          int retry,
                                          bool &precertify);
+  virtual PT(GraphicsStateGuardian) make_callback_gsg(GraphicsEngine *engine);
 
 private: