Fix ON_DEMAND_RENDER mode on Mac OSX....

core/cross/client.h

 /*
  * Copyright 2009, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
@@ skipping 246 matching lines @@
   //       modifies some HTML form text fields on render callback, which on
   //       Firefox causes a plugin invalidation and round and round we would
   //       go.
   void RenderClient(bool send_callback);
 
   // In some situations (on Mac OS X at least) calling the user's
   // render callback can cause OS events to be dispatched which cause
   // the plugin to become reentrant. Detect this at a higher level.
   bool IsRendering();
 
+  // Needs either ONDEMAND or CONTINOUS render.
+  bool NeedsRender();
+
   // If Renderer::max_fps has been set in RENDERMODE_CONTINUOUS mode, we don't
   // draw on each tick but just let new textures drive the rendering. There is
   // only one exception: if we haven't received any new textures for a while, we
   // still need to draw in order to trigger rendering callback. Since there
   // might be some UI depends on rendering callback.
   // This function determines if this has happened and if we need a draw.
   bool NeedsContinuousRender();
 
   // Sets the texture to use when a Texture or Sampler is missing while
   // rendering. If you set it to NULL you'll get an error if you try to render
@@ skipping 261 matching lines @@
 
   RenderSurface::Ref offscreen_render_surface_;
   RenderDepthStencilSurface::Ref offscreen_depth_render_surface_;
 
   DISALLOW_COPY_AND_ASSIGN(Client);
 };  // Client
 
 }  // namespace o3d
 
 #endif  // O3D_CORE_CROSS_CLIENT_H_