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,
+    const char* name) {
+  gl_ = resource_provider->ContextGL();
+  DCHECK(gl_);
+  gr_context_ = resource_provider->GrContext();
+  // TODO(alokp): Implement TestContextProvider::GrContext().
+  if (!gr_context_)
+    return;

[reveman, 2014/07/01 17:19:01]

looks wrong. you still want to call PushGroupMarkerEXT.

[sohanjg, 2014/07/02 07:40:37]

Done.

+
+  BeginGpuRaster(name);
+}
+
+ResourceProvider::ScopedGpuRaster::~ScopedGpuRaster() {
+  EndGpuRaster();
+}
+
+void ResourceProvider::ScopedGpuRaster::BeginGpuRaster(const char* name) {
+  gl_->PushGroupMarkerEXT(0, name);
+  gr_context_->resetContext();
+}
+
+void ResourceProvider::ScopedGpuRaster::EndGpuRaster() {
+  gr_context_->flush();

[reveman, 2014/07/01 17:19:01]

what if gr_context_ is NULL?

[sohanjg, 2014/07/02 07:40:37]

Done.

+  gl_->PopGroupMarkerEXT();
+}
+
 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 1025 matching lines @@
   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;
 }
 
 }  // namespace cc