content/browser/compositor/surface_display_output_surface.cc

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "content/browser/compositor/surface_display_output_surface.h"
   6
   7 #include "cc/output/compositor_frame.h"
   8 #include "cc/surfaces/display.h"
   9 #include "cc/surfaces/surface.h"
  10 #include "cc/surfaces/surface_manager.h"
  11
  12 namespace content {
  13
  14 SurfaceDisplayOutputSurface::SurfaceDisplayOutputSurface(
  15     cc::Display* display,
  16     cc::SurfaceManager* surface_manager,
  17     const scoped_refptr<cc::ContextProvider>& context_provider)
  18     : cc::OutputSurface(context_provider,
  19                         scoped_ptr<cc::SoftwareOutputDevice>()),
  20       display_(display),
  21       surface_manager_(surface_manager) {
  22   capabilities_.delegated_rendering = true;
  23   capabilities_.max_frames_pending = 1;
  24 }
  25
  26 SurfaceDisplayOutputSurface::~SurfaceDisplayOutputSurface() {
  27 }
  28
  29 void SurfaceDisplayOutputSurface::SwapBuffers(cc::CompositorFrame* frame) {
  30   gfx::Size frame_size =
  31       frame->delegated_frame_data->render_pass_list.back()->output_rect.size();
  32   display_->Resize(frame_size);
  33   cc::SurfaceId surface_id = display_->CurrentSurfaceId();
  34   cc::Surface* surface = surface_manager_->GetSurfaceForId(surface_id);
  35   if (!surface)
  36     return;
  37
  38   scoped_ptr<cc::CompositorFrame> frame_copy(new cc::CompositorFrame());
  39   frame->AssignTo(frame_copy.get());
  40   surface->QueueFrame(frame_copy.Pass());
  41
  42   if (!display_->Draw())
  43     return;
  44
  45   client_->DidSwapBuffers();
  46   client_->DidSwapBuffersComplete();
  47 }
  48
  49 }  // namespace content