Add optimization for CHROMIUM_subscribe_uniform extension.

gpu/command_buffer/service/context_group.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 "gpu/command_buffer/service/context_group.h"
 
 #include <algorithm>
 #include <string>
 
 #include "base/command_line.h"
@@ skipping 14 matching lines @@
 #include "ui/gl/gl_implementation.h"
 
 namespace gpu {
 namespace gles2 {
 
 ContextGroup::ContextGroup(
     const scoped_refptr<MailboxManager>& mailbox_manager,
     const scoped_refptr<MemoryTracker>& memory_tracker,
     const scoped_refptr<ShaderTranslatorCache>& shader_translator_cache,
     const scoped_refptr<FeatureInfo>& feature_info,
+    const scoped_refptr<SubscriptionRefSet>& subscription_ref_set,
     const scoped_refptr<ValueStateMap>& pending_valuebuffer_state,
     bool bind_generates_resource)
     : mailbox_manager_(mailbox_manager),
       memory_tracker_(memory_tracker),
       shader_translator_cache_(shader_translator_cache),
+      subscription_ref_set_(subscription_ref_set),
       pending_valuebuffer_state_(pending_valuebuffer_state),
       enforce_gl_minimums_(CommandLine::ForCurrentProcess()->HasSwitch(
           switches::kEnforceGLMinimums)),
       bind_generates_resource_(bind_generates_resource),
       max_vertex_attribs_(0u),
       max_texture_units_(0u),
       max_texture_image_units_(0u),
       max_vertex_texture_image_units_(0u),
       max_fragment_uniform_vectors_(0u),
       max_varying_vectors_(0u),
       max_vertex_uniform_vectors_(0u),
       max_color_attachments_(1u),
       max_draw_buffers_(1u),
       program_cache_(NULL),
       feature_info_(feature_info),
       draw_buffer_(GL_BACK) {
   {
     if (!mailbox_manager_.get())
       mailbox_manager_ = new MailboxManagerImpl;
+    if (!subscription_ref_set_.get())
+      subscription_ref_set_ = new SubscriptionRefSet();
     if (!pending_valuebuffer_state_.get())
       pending_valuebuffer_state_ = new ValueStateMap();
     if (!feature_info.get())
       feature_info_ = new FeatureInfo;
     TransferBufferManager* manager = new TransferBufferManager();
     transfer_buffer_manager_.reset(manager);
     manager->Initialize();
   }
 }
 
@@ skipping 52 matching lines @@
 
   buffer_manager_.reset(
       new BufferManager(memory_tracker_.get(), feature_info_.get()));
   framebuffer_manager_.reset(
       new FramebufferManager(max_draw_buffers_, max_color_attachments_));
   renderbuffer_manager_.reset(new RenderbufferManager(
       memory_tracker_.get(), max_renderbuffer_size, max_samples,
       depth24_supported));
   shader_manager_.reset(new ShaderManager());
   valuebuffer_manager_.reset(
-      new ValuebufferManager(pending_valuebuffer_state_.get()));
+      new ValuebufferManager(subscription_ref_set_.get(),
+                             pending_valuebuffer_state_.get()));
 
   // Lookup GL things we need to know.
   const GLint kGLES2RequiredMinimumVertexAttribs = 8u;
   if (!QueryGLFeatureU(
       GL_MAX_VERTEX_ATTRIBS, kGLES2RequiredMinimumVertexAttribs,
       &max_vertex_attribs_)) {
     LOG(ERROR) << "ContextGroup::Initialize failed because too few "
                << "vertex attributes supported.";
     return false;
   }
@@ skipping 241 matching lines @@
     GLenum pname, GLint min_required, uint32* v) {
   uint32 value = 0;
   GetIntegerv(pname, &value);
   bool result = CheckGLFeatureU(min_required, &value);
   *v = value;
   return result;
 }
 
 }  // namespace gles2
 }  // namespace gpu