3D Compositing in <browser>, first draft.

content/common/browser_plugin_messages.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Multiply-included message header, no traditional include guard.
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/process.h"
+#include "content/common/browser_plugin_info.h"
 #include "content/common/content_export.h"
 #include "content/public/common/common_param_traits.h"
 #include "ipc/ipc_channel_handle.h"
 #include "ipc/ipc_message_macros.h"
 #include "ipc/ipc_message_utils.h"
 #include "ui/gfx/rect.h"
 #include "ui/gfx/size.h"
 #include "webkit/glue/webcursor.h"
 
 #undef IPC_MESSAGE_EXPORT
 #define IPC_MESSAGE_EXPORT CONTENT_EXPORT
 
 #define IPC_MESSAGE_START BrowserPluginMsgStart
 
 // Browser plugin messages
 
 // -----------------------------------------------------------------------------
 // These messages are from the embedder to the browser process.
 
+IPC_STRUCT_TRAITS_BEGIN(BrowserPluginHostMsg_Surface_Params)
+  IPC_STRUCT_TRAITS_MEMBER(gpu_process_id)
+  IPC_STRUCT_TRAITS_MEMBER(client_id)
+  IPC_STRUCT_TRAITS_MEMBER(context_id)
+  IPC_STRUCT_TRAITS_MEMBER(texture_id[0])
+  IPC_STRUCT_TRAITS_MEMBER(texture_id[1])
+  IPC_STRUCT_TRAITS_MEMBER(sync_point)
+IPC_STRUCT_TRAITS_END()
+
+IPC_STRUCT_TRAITS_BEGIN(BrowserPlugin_SwapInfo)
+  IPC_STRUCT_TRAITS_MEMBER(route_id)
+  IPC_STRUCT_TRAITS_MEMBER(gpu_host_id)
+IPC_STRUCT_TRAITS_END()
+
 // Tells the guest to focus or defocus itself.
 IPC_MESSAGE_ROUTED2(BrowserPluginHostMsg_SetFocus,
                     int /* instance_id */,
                     bool /* enable */)
 
 // Message payload includes:
 // 1. A blob that should be cast to WebInputEvent
 // 2. An optional boolean value indicating if a RawKeyDown event is associated
 //    to a keyboard shortcut of the browser.
 IPC_SYNC_MESSAGE_ROUTED0_2(BrowserPluginHostMsg_HandleInputEvent,
                            bool /* handled */,
                            WebCursor /* cursor */)
 
 // An ACK to the guest process letting it know that the embedder has handled
 // the previous frame and is ready for the next frame. If the guest sent the
 // embedder a bitmap that does not match the size of the BrowserPlugin's
 // container, the BrowserPlugin requests a new size as well.
 IPC_MESSAGE_ROUTED3(BrowserPluginHostMsg_UpdateRect_ACK,
                     int /* instance_id */,
                     int /* message_id */,
                     gfx::Size /* repaint_view_size */)
 
 // A BrowserPlugin sends this to the browser process when it wants to navigate
 // to a given src URL. If a guest WebContents already exists, it will navigate
 // that WebContents. If not, it will create the WebContents, associate it with
 // the BrowserPlugin's browser-side BrowserPluginHost as a guest, and navigate
 // it to the requested URL.
-IPC_MESSAGE_ROUTED3(BrowserPluginHostMsg_NavigateOrCreateGuest,
+IPC_MESSAGE_ROUTED4(BrowserPluginHostMsg_NavigateOrCreateGuest,
                     int /* instance_id*/,
                     long long /* frame_id */,
-                    std::string /* src */)
+                    std::string /* src */,
+                    BrowserPluginHostMsg_Surface_Params /* surface params */)

[scshunt, 2012/08/12 01:42:45]

Do we need to send surface parameters with every go? Does having this message be
transparent as to the presence of a guest preclude there from being a
distinction?

[scshunt, 2012/08/17 17:30:28]

A: Yes we do, since we want a new surface for cross-process nav so that we don't
have two renderers fighting on the same textures.

+
+IPC_MESSAGE_ROUTED2(BrowserPluginHostMsg_BuffersSwappedACK,
+                    BrowserPlugin_SwapInfo /* info */,
+                    uint32 /* sync_point */)
 
 // When a BrowserPlugin has been removed from the embedder's DOM, it informs
 // the browser process to cleanup the guest.
 IPC_MESSAGE_ROUTED1(BrowserPluginHostMsg_PluginDestroyed,
                     int /* instance_id */)
 
 // -----------------------------------------------------------------------------
 // These messages are from the guest renderer to the browser process
 
 IPC_STRUCT_BEGIN(BrowserPluginHostMsg_ResizeGuest_Params)
@@ skipping 58 matching lines @@
   // progress. If auto-resize is enabled, this should update the corresponding
   // view size.
   IPC_STRUCT_MEMBER(gfx::Size, view_size)
 
   // All the above coordinates are in DIP. This is the scale factor needed
   // to convert them to pixels.
   IPC_STRUCT_MEMBER(float, scale_factor)
 
   // Is this UpdateRect an ACK to a resize request?
   IPC_STRUCT_MEMBER(bool, is_resize_ack)
+
+  // Do we need to reply to it
+  IPC_STRUCT_MEMBER(bool, needs_ack)
 IPC_STRUCT_END()
 
 // When the user tabs to the end of the tab stops of a guest, the browser
 // process informs the embedder to tab out of the browser plugin.
 IPC_MESSAGE_CONTROL2(BrowserPluginMsg_AdvanceFocus,
                      int /* instance_id */,
                      bool /* reverse */)
 
+IPC_MESSAGE_CONTROL3(BrowserPluginMsg_BuffersSwapped,
+                     int /* instance_id */,
+                     uint64 /* surface_handle */,
+                     BrowserPlugin_SwapInfo /* info */)
+
+IPC_MESSAGE_CONTROL2(BrowserPluginMsg_SurfaceResize,
+                     int /* instance_id */,
+                     gfx::Size /* size */)
+
 // The guest has damage it wants to convey to the embedder so that it can
 // update its backing store.
 IPC_MESSAGE_CONTROL3(BrowserPluginMsg_UpdateRect,
                      int /* instance_id */,
                      int /* message_id */,
                      BrowserPluginMsg_UpdateRect_Params)