gpu: reference target surfaces through a globally unique surface id.

content/browser/renderer_host/render_widget_host_view_aura.cc

 // 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.
 
 #include "content/browser/renderer_host/render_widget_host_view_aura.h"
 
 #include "base/logging.h"
 #include "content/browser/renderer_host/backing_store_skia.h"
 #include "content/browser/renderer_host/render_widget_host.h"
 #include "content/browser/renderer_host/web_input_event_aura.h"
@@ skipping 328 matching lines @@
   } else {
     window_->layer()->SetExternalTexture(NULL);
   }
 #endif
 }
 
 void RenderWidgetHostViewAura::AcceleratedSurfaceBuffersSwapped(
     const GpuHostMsg_AcceleratedSurfaceBuffersSwapped_Params& params,
     int gpu_host_id) {
 #if defined(UI_COMPOSITOR_IMAGE_TRANSPORT)
-  current_surface_ = params.surface_id;
+  current_surface_ = params.surface_handle;
   UpdateExternalTexture();
 
   if (!window_->layer()->GetCompositor()) {
     // We have no compositor, so we have no way to display the surface.
     // Must still send the ACK.
     RenderWidgetHost::AcknowledgeSwapBuffers(params.route_id, gpu_host_id);
   } else {
     gfx::Size surface_size =
-        accelerated_surface_containers_[params.surface_id]->GetSize();
+        accelerated_surface_containers_[params.surface_handle]->GetSize();
     window_->SchedulePaintInRect(gfx::Rect(surface_size));
 
     // Add sending an ACK to the list of things to do OnCompositingEnded
     on_compositing_ended_callbacks_.push_back(
         base::Bind(&RenderWidgetHost::AcknowledgeSwapBuffers,
                    params.route_id, gpu_host_id));
     ui::Compositor* compositor = window_->layer()->GetCompositor();
     if (!compositor->HasObserver(this))
       compositor->AddObserver(this);
   }
 #else
   NOTREACHED();
 #endif
 }
 
 void RenderWidgetHostViewAura::AcceleratedSurfacePostSubBuffer(
     const GpuHostMsg_AcceleratedSurfacePostSubBuffer_Params& params,
     int gpu_host_id) {
 #if defined(UI_COMPOSITOR_IMAGE_TRANSPORT)
-  current_surface_ = params.surface_id;
+  current_surface_ = params.surface_handle;
   UpdateExternalTexture();
 
   if (!window_->layer()->GetCompositor()) {
     // We have no compositor, so we have no way to display the surface
     // Must still send the ACK
     RenderWidgetHost::AcknowledgePostSubBuffer(params.route_id, gpu_host_id);
   } else {
     gfx::Size surface_size =
-        accelerated_surface_containers_[params.surface_id]->GetSize();
+        accelerated_surface_containers_[params.surface_handle]->GetSize();
 
     // Co-ordinates come in OpenGL co-ordinate space.
     // We need to convert to layer space.
     window_->SchedulePaintInRect(gfx::Rect(
         params.x,
         surface_size.height() - params.y - params.height,
         params.width,
         params.height));
 
     // Add sending an ACK to the list of things to do OnCompositingEnded
     on_compositing_ended_callbacks_.push_back(
         base::Bind(&RenderWidgetHost::AcknowledgePostSubBuffer,
                    params.route_id, gpu_host_id));
     ui::Compositor* compositor = window_->layer()->GetCompositor();
     if (!compositor->HasObserver(this))
       compositor->AddObserver(this);
   }
 #else
   NOTREACHED();
 #endif
 }
 
 #if defined(UI_COMPOSITOR_IMAGE_TRANSPORT)
 void RenderWidgetHostViewAura::AcceleratedSurfaceNew(
       int32 width,
       int32 height,
-      uint64* surface_id,
-      TransportDIB::Handle* surface_handle) {
+      uint64* surface_handle,
+      TransportDIB::Handle* shm_handle) {
   scoped_refptr<AcceleratedSurfaceContainerLinux> surface(
       AcceleratedSurfaceContainerLinux::Create(gfx::Size(width, height)));
-  if (!surface->Initialize(surface_id)) {
+  if (!surface->Initialize(surface_handle)) {
     LOG(ERROR) << "Failed to create AcceleratedSurfaceContainer";
     return;
   }
-  *surface_handle = surface->Handle();
+  *shm_handle = surface->Handle();
 
-  accelerated_surface_containers_[*surface_id] = surface;
+  accelerated_surface_containers_[*surface_handle] = surface;
 }
 
-void RenderWidgetHostViewAura::AcceleratedSurfaceRelease(uint64 surface_id) {
-  if (current_surface_ == surface_id) {
+void RenderWidgetHostViewAura::AcceleratedSurfaceRelease(
+    uint64 surface_handle) {
+  if (current_surface_ == surface_handle) {
     current_surface_ = gfx::kNullPluginWindow;
     // Don't call UpdateExternalTexture: it's possible that a new surface with
     // the same ID will be re-created right away, in which case we don't want to
     // flip back and forth. Instead wait until we got the accelerated
     // compositing deactivation.
   }
-  accelerated_surface_containers_.erase(surface_id);
+  accelerated_surface_containers_.erase(surface_handle);
 }
 #endif
 
 void RenderWidgetHostViewAura::SetBackground(const SkBitmap& background) {
   RenderWidgetHostView::SetBackground(background);
   host_->SetBackground(background);
 #if defined(UI_COMPOSITOR_IMAGE_TRANSPORT)
   window_->layer()->SetFillsBoundsOpaquely(background.isOpaque());
 #endif
 }
@@ skipping 471 matching lines @@
 // static
 void RenderWidgetHostView::GetDefaultScreenInfo(
     WebKit::WebScreenInfo* results) {
   const gfx::Size size = gfx::Screen::GetPrimaryMonitorSize();
   results->rect = WebKit::WebRect(0, 0, size.width(), size.height());
   results->availableRect = results->rect;
   // TODO(derat): Don't hardcode this?
   results->depth = 24;
   results->depthPerComponent = 8;
 }