mojo/cc/output_surface_mojo.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 "mojo/cc/output_surface_mojo.h"
   6
   7 #include "cc/output/compositor_frame.h"
   8 #include "cc/output/output_surface_client.h"
   9 #include "mojo/converters/geometry/geometry_type_converters.h"
  10 #include "mojo/converters/surfaces/surfaces_type_converters.h"
  11
  12 namespace mojo {
  13
  14 OutputSurfaceMojo::OutputSurfaceMojo(
  15     OutputSurfaceMojoClient* client,
  16     const scoped_refptr<cc::ContextProvider>& context_provider,
  17     SurfacePtr surface,
  18     uint32_t id_namespace)
  19     : cc::OutputSurface(context_provider),
  20       output_surface_mojo_client_(client),
  21       surface_(surface.Pass()),
  22       id_allocator_(id_namespace) {
  23   capabilities_.delegated_rendering = true;
  24   capabilities_.max_frames_pending = 1;
  25 }
  26
  27 OutputSurfaceMojo::~OutputSurfaceMojo() {
  28 }
  29
  30 void OutputSurfaceMojo::ReturnResources(Array<ReturnedResourcePtr> resources) {
  31 }
  32
  33 bool OutputSurfaceMojo::BindToClient(cc::OutputSurfaceClient* client) {
  34   surface_.set_client(this);
  35   return cc::OutputSurface::BindToClient(client);
  36 }
  37
  38 void OutputSurfaceMojo::SwapBuffers(cc::CompositorFrame* frame) {
  39   gfx::Size frame_size =
  40       frame->delegated_frame_data->render_pass_list.back()->output_rect.size();
  41   if (frame_size != surface_size_) {
  42     if (!surface_id_.is_null()) {
  43       surface_->DestroySurface(SurfaceId::From(surface_id_));
  44     }
  45     surface_id_ = id_allocator_.GenerateId();
  46     surface_->CreateSurface(SurfaceId::From(surface_id_),
  47                             Size::From(frame_size));
  48     output_surface_mojo_client_->DidCreateSurface(surface_id_);
  49     surface_size_ = frame_size;
  50   }
  51
  52   surface_->SubmitFrame(SurfaceId::From(surface_id_), Frame::From(*frame));
  53
  54   client_->DidSwapBuffers();
  55   client_->DidSwapBuffersComplete();
  56 }
  57
  58 }  // namespace mojo