Part 3/3 (RWH/IOSurface) of adding with device scale factor to transport surfaces

content/common/gpu/image_transport_surface_mac.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/common/gpu/image_transport_surface.h"
 
 #include "base/mac/scoped_cftyperef.h"
 #include "base/memory/scoped_ptr.h"
 #include "content/common/gpu/gpu_messages.h"
 #include "ui/gfx/native_widget_types.h"
@@ skipping 112 matching lines @@
     GpuChannelManager* manager,
     GpuCommandBufferStub* stub,
     gfx::PluginWindowHandle handle)
     : gfx::NoOpGLSurfaceCGL(gfx::Size(1, 1)),
       backbuffer_suggested_allocation_(true),
       frontbuffer_suggested_allocation_(true),
       fbo_id_(0),
       texture_id_(0),
       io_surface_handle_(0),
       context_(NULL),
-      scale_factor_(1),
+      scale_factor_(1.f),
       made_current_(false),
       is_swap_buffers_pending_(false),
       did_unschedule_(false) {
   helper_.reset(new ImageTransportHelper(this, manager, stub, handle));
 }
 
 IOSurfaceImageTransportSurface::~IOSurfaceImageTransportSurface() {
   Destroy();
 }
 
@@ skipping 82 matching lines @@
 
 bool IOSurfaceImageTransportSurface::SwapBuffers() {
   DCHECK(backbuffer_suggested_allocation_);
   if (!frontbuffer_suggested_allocation_)
     return true;
   glFlush();
 
   GpuHostMsg_AcceleratedSurfaceBuffersSwapped_Params params;
   params.surface_handle = io_surface_handle_;
   params.size = GetSize();
+  params.scale_factor = scale_factor_;
   params.latency_info = latency_info_;
   helper_->SendAcceleratedSurfaceBuffersSwapped(params);
 
   DCHECK(!is_swap_buffers_pending_);
   is_swap_buffers_pending_ = true;
   return true;
 }
 
 bool IOSurfaceImageTransportSurface::PostSubBuffer(
     int x, int y, int width, int height) {
   DCHECK(backbuffer_suggested_allocation_);
   if (!frontbuffer_suggested_allocation_)
     return true;
   glFlush();
 
   GpuHostMsg_AcceleratedSurfacePostSubBuffer_Params params;
   params.surface_handle = io_surface_handle_;
   params.x = x;
   params.y = y;
   params.width = width;
   params.height = height;
   params.surface_size = GetSize();
+  params.surface_scale_factor = scale_factor_;
   params.latency_info = latency_info_;
   helper_->SendAcceleratedSurfacePostSubBuffer(params);
 
   DCHECK(!is_swap_buffers_pending_);
   is_swap_buffers_pending_ = true;
   return true;
 }
 
 std::string IOSurfaceImageTransportSurface::GetExtensions() {
   std::string extensions = gfx::GLSurface::GetExtensions();
@@ skipping 214 matching lines @@
           manager, stub, surface.get(), false));
   }
 }
 
 // static
 void ImageTransportSurface::SetAllowOSMesaForTesting(bool allow) {
   g_allow_os_mesa = allow;
 }
 
 }  // namespace content