content/browser/compositor/gpu_browser_compositor_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/gpu_browser_compositor_output_surface.h"
   6
   7 #include "cc/output/compositor_frame.h"
   8 #include "cc/output/output_surface_client.h"
   9 #include "content/browser/compositor/reflector_impl.h"
  10 #include "content/browser/renderer_host/render_widget_host_impl.h"
  11 #include "content/common/gpu/client/context_provider_command_buffer.h"
  12 #include "content/public/browser/browser_thread.h"
  13 #include "gpu/command_buffer/client/context_support.h"
  14 #include "gpu/command_buffer/client/gles2_interface.h"
  15
  16 namespace content {
  17
  18 GpuBrowserCompositorOutputSurface::GpuBrowserCompositorOutputSurface(
  19     const scoped_refptr<ContextProviderCommandBuffer>& context,
  20     int surface_id,
  21     IDMap<BrowserCompositorOutputSurface>* output_surface_map,
  22     const scoped_refptr<ui::CompositorVSyncManager>& vsync_manager,
  23     scoped_ptr<cc::OverlayCandidateValidator> overlay_candidate_validator)
  24     : BrowserCompositorOutputSurface(context,
  25                                      surface_id,
  26                                      output_surface_map,
  27                                      vsync_manager),
  28       swap_buffers_completion_callback_(
  29           base::Bind(&GpuBrowserCompositorOutputSurface::OnSwapBuffersCompleted,
  30                      base::Unretained(this))) {
  31   overlay_candidate_validator_ = overlay_candidate_validator.Pass();
  32 }
  33
  34 GpuBrowserCompositorOutputSurface::~GpuBrowserCompositorOutputSurface() {}
  35
  36 CommandBufferProxyImpl*
  37 GpuBrowserCompositorOutputSurface::GetCommandBufferProxy() {
  38   ContextProviderCommandBuffer* provider_command_buffer =
  39       static_cast<content::ContextProviderCommandBuffer*>(
  40           context_provider_.get());
  41   CommandBufferProxyImpl* command_buffer_proxy =
  42       provider_command_buffer->GetCommandBufferProxy();
  43   DCHECK(command_buffer_proxy);
  44   return command_buffer_proxy;
  45 }
  46
  47 bool GpuBrowserCompositorOutputSurface::BindToClient(
  48     cc::OutputSurfaceClient* client) {
  49   if (!BrowserCompositorOutputSurface::BindToClient(client))
  50     return false;
  51
  52   GetCommandBufferProxy()->SetSwapBuffersCompletionCallback(
  53       swap_buffers_completion_callback_.callback());
  54   return true;
  55 }
  56
  57 void GpuBrowserCompositorOutputSurface::SwapBuffers(
  58     cc::CompositorFrame* frame) {
  59   DCHECK(frame->gl_frame_data);
  60
  61   GetCommandBufferProxy()->SetLatencyInfo(frame->metadata.latency_info);
  62
  63   if (reflector_.get()) {
  64     if (frame->gl_frame_data->sub_buffer_rect ==
  65         gfx::Rect(frame->gl_frame_data->size))
  66       reflector_->OnSwapBuffers();
  67     else
  68       reflector_->OnPostSubBuffer(frame->gl_frame_data->sub_buffer_rect);
  69   }
  70
  71   if (frame->gl_frame_data->sub_buffer_rect ==
  72       gfx::Rect(frame->gl_frame_data->size)) {
  73     context_provider_->ContextSupport()->Swap();
  74   } else {
  75     context_provider_->ContextSupport()->PartialSwapBuffers(
  76         frame->gl_frame_data->sub_buffer_rect);
  77   }
  78
  79   client_->DidSwapBuffers();
  80 }
  81
  82 void GpuBrowserCompositorOutputSurface::OnSwapBuffersCompleted(
  83     const std::vector<ui::LatencyInfo>& latency_info) {
  84 #if defined(OS_MACOSX)
  85   // On Mac, delay acknowledging the swap to the output surface client until
  86   // it has been drawn, see OnSurfaceDisplayed();
  87   NOTREACHED();
  88 #else
  89   if (BrowserThread::CurrentlyOn(BrowserThread::UI)) {
  90     RenderWidgetHostImpl::CompositorFrameDrawn(latency_info);
  91   } else {
  92     BrowserThread::PostTask(
  93         BrowserThread::UI,
  94         FROM_HERE,
  95         base::Bind(&RenderWidgetHostImpl::CompositorFrameDrawn, latency_info));
  96   }
  97   OnSwapBuffersComplete();
  98 #endif
  99 }
 100
 101 #if defined(OS_MACOSX)
 102 void GpuBrowserCompositorOutputSurface::OnSurfaceDisplayed() {
 103   cc::OutputSurface::OnSwapBuffersComplete();
 104 }
 105 #endif
 106
 107 }  // namespace content