cc: Hide Gpu Rasterization details in Resource Provider.

cc/resources/resource_provider.cc

 // Copyright 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 "cc/resources/resource_provider.h"
 
 #include <algorithm>
 #include <limits>
 
 #include "base/containers/hash_tables.h"
@@ skipping 1211 matching lines @@
   ResourceProvider::PopulateSkBitmapWithResource(
       &sk_bitmap_, resource_provider->LockForWrite(resource_id));
   DCHECK(valid());
   sk_canvas_.reset(new SkCanvas(sk_bitmap_));
 }
 
 ResourceProvider::ScopedWriteLockSoftware::~ScopedWriteLockSoftware() {
   resource_provider_->UnlockForWrite(resource_id_);
 }
 
+ResourceProvider::ScopedGpuRaster::ScopedGpuRaster(
+    ResourceProvider* resource_provider)
+    : resource_provider_(resource_provider) {
+  resource_provider_->BeginGpuRaster();
+}
+
+ResourceProvider::ScopedGpuRaster::~ScopedGpuRaster() {
+  resource_provider_->EndGpuRaster();
+}
+
 ResourceProvider::ResourceProvider(OutputSurface* output_surface,
                                    SharedBitmapManager* shared_bitmap_manager,
                                    int highp_threshold_min,
                                    bool use_rgba_4444_texture_format,
                                    size_t id_allocation_chunk_size,
                                    bool use_distance_field_text)
     : output_surface_(output_surface),
       shared_bitmap_manager_(shared_bitmap_manager),
       lost_output_surface_(false),
       highp_threshold_min_(highp_threshold_min),
@@ skipping 1024 matching lines @@
 GLES2Interface* ResourceProvider::ContextGL() const {
   ContextProvider* context_provider = output_surface_->context_provider();
   return context_provider ? context_provider->ContextGL() : NULL;
 }
 
 class GrContext* ResourceProvider::GrContext() const {
   ContextProvider* context_provider = output_surface_->context_provider();
   return context_provider ? context_provider->GrContext() : NULL;
 }
 
+void ResourceProvider::BeginGpuRaster() {
+  GLES2Interface* gl = ContextGL();
+  DCHECK(gl);
+
+  // TODO(alokp): Use a trace macro to push/pop markers.
+  // Using push/pop functions directly incurs cost to evaluate function
+  // arguments even when tracing is disabled.
+  gl->PushGroupMarkerEXT(0, "GpuRasterization");
+
+  class GrContext* gr_context = GrContext();
+  if (gr_context)
+    gr_context->resetContext();
+}
+
+void ResourceProvider::EndGpuRaster() {
+  GLES2Interface* gl = ContextGL();
+  DCHECK(gl);
+
+  class GrContext* gr_context = GrContext();
+  if (gr_context)
+    gr_context->flush();
+
+  // TODO(alokp): Use a trace macro to push/pop markers.
+  // Using push/pop functions directly incurs cost to evaluate function
+  // arguments even when tracing is disabled.
+  gl->PopGroupMarkerEXT();
+}
+
 }  // namespace cc