cc/surfaces/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 "cc/surfaces/surface_display_output_surface.h"
   6
   7 #include "base/bind.h"
   8 #include "cc/output/compositor_frame.h"
   9 #include "cc/output/compositor_frame_ack.h"
  10 #include "cc/surfaces/display.h"
  11 #include "cc/surfaces/onscreen_display_client.h"
  12 #include "cc/surfaces/surface.h"
  13 #include "cc/surfaces/surface_manager.h"
  14
  15 namespace cc {
  16
  17 SurfaceDisplayOutputSurface::SurfaceDisplayOutputSurface(
  18     SurfaceManager* surface_manager,
  19     SurfaceIdAllocator* allocator,
  20     const scoped_refptr<ContextProvider>& context_provider)
  21     : OutputSurface(context_provider),
  22       display_client_(NULL),
  23       factory_(surface_manager, this),
  24       allocator_(allocator) {
  25   factory_.set_needs_sync_points(false);
  26   capabilities_.delegated_rendering = true;
  27   capabilities_.max_frames_pending = 1;
  28   capabilities_.adjust_deadline_for_parent = true;
  29   capabilities_.can_force_reclaim_resources = true;
  30   // Display and SurfaceDisplayOutputSurface share a GL context, so sync
  31   // points aren't needed when passing resources between them.
  32   capabilities_.delegated_sync_points_required = false;
  33 }
  34
  35 SurfaceDisplayOutputSurface::~SurfaceDisplayOutputSurface() {
  36   client_ = NULL;
  37   if (!surface_id_.is_null()) {
  38     factory_.Destroy(surface_id_);
  39   }
  40 }
  41
  42 void SurfaceDisplayOutputSurface::ReceivedVSyncParameters(
  43     base::TimeTicks timebase,
  44     base::TimeDelta interval) {
  45   CommitVSyncParameters(timebase, interval);
  46 }
  47
  48 void SurfaceDisplayOutputSurface::SwapBuffers(CompositorFrame* frame) {
  49   gfx::Size frame_size =
  50       frame->delegated_frame_data->render_pass_list.back()->output_rect.size();
  51   if (frame_size.IsEmpty() || frame_size != display_size_) {
  52     if (!surface_id_.is_null()) {
  53       factory_.Destroy(surface_id_);
  54     }
  55     surface_id_ = allocator_->GenerateId();
  56     factory_.Create(surface_id_);
  57     display_size_ = frame_size;
  58   }
  59   display_client_->display()->SetSurfaceId(surface_id_,
  60                                            frame->metadata.device_scale_factor);
  61
  62   client_->DidSwapBuffers();
  63
  64   scoped_ptr<CompositorFrame> frame_copy(new CompositorFrame());
  65   frame->AssignTo(frame_copy.get());
  66   factory_.SubmitFrame(
  67       surface_id_, frame_copy.Pass(),
  68       base::Bind(&SurfaceDisplayOutputSurface::SwapBuffersComplete,
  69                  base::Unretained(this)));
  70 }
  71
  72 bool SurfaceDisplayOutputSurface::BindToClient(OutputSurfaceClient* client) {
  73   DCHECK(client);
  74   DCHECK(display_client_);
  75   client_ = client;
  76   // Avoid initializing GL context here, as this should be sharing the
  77   // Display's context.
  78   return display_client_->Initialize();
  79 }
  80
  81 void SurfaceDisplayOutputSurface::ForceReclaimResources() {
  82   if (!surface_id_.is_null())
  83     factory_.SubmitFrame(surface_id_, nullptr, SurfaceFactory::DrawCallback());
  84 }
  85
  86 void SurfaceDisplayOutputSurface::ReturnResources(
  87     const ReturnedResourceArray& resources) {
  88   CompositorFrameAck ack;
  89   ack.resources = resources;
  90   if (client_)
  91     client_->ReclaimResources(&ack);
  92 }
  93
  94 void SurfaceDisplayOutputSurface::SwapBuffersComplete(SurfaceDrawStatus drawn) {
  95   if (client_ && !display_client_->output_surface_lost())
  96     client_->DidSwapBuffersComplete();
  97 }
  98
  99 }  // namespace cc