Defer initializing the CopyTextureCHROMIUMResourceManager

gpu/command_buffer/service/gles2_cmd_decoder.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/gles2_cmd_decoder.h"
 
 #include <stdio.h>
 
 #include <algorithm>
 #include <list>
@@ skipping 1999 matching lines @@
 
   if (!group_->Initialize(disallowed_features, allowed_extensions)) {
     LOG(ERROR) << "GpuScheduler::InitializeCommon failed because group "
                << "failed to initialize.";
     group_ = NULL;  // Must not destroy ContextGroup if it is not initialized.
     Destroy(true);
     return false;
   }
   CHECK_GL_ERROR();
 
-  copy_texture_CHROMIUM_.reset(new CopyTextureCHROMIUMResourceManager());
-  copy_texture_CHROMIUM_->Initialize();
-  CHECK_GL_ERROR();
-
   disallowed_features_ = disallowed_features;
 
   vertex_attrib_manager_.reset(new VertexAttribManager());
   vertex_attrib_manager_->Initialize(group_->max_vertex_attribs());
 
   query_manager_.reset(new QueryManager(this, feature_info_));
 
   util_.set_num_compressed_texture_formats(
       validators_->compressed_texture_format.GetValues().size());
 
@@ skipping 6465 matching lines @@
   }
 
   // Check that this type of texture is allowed.
   if (!texture_manager()->ValidForTarget(GL_TEXTURE_2D, level, source_width,
                                          source_height, 1)) {
     SetGLError(GL_INVALID_VALUE,
              "glCopyTextureCHROMIUM: Bad dimensions");
     return;
   }
 
+  // Defer initializing the CopyTextureCHROMIUMResourceManager until it is
+  // needed because it takes 10s of milliseconds to initialize.
+  if (!copy_texture_CHROMIUM_.get()) {
+    CopyRealGLErrorsToWrapper();
+    copy_texture_CHROMIUM_.reset(new CopyTextureCHROMIUMResourceManager());
+    copy_texture_CHROMIUM_->Initialize();
+    RestoreCurrentFramebufferBindings();
+    if (PeekGLError() != GL_NO_ERROR)
+      return;
+  }
+
   GLenum dest_type;
   GLenum dest_internal_format;
   bool dest_level_defined = dest_info->GetLevelSize(GL_TEXTURE_2D, level,
                                                     &dest_width,
                                                     &dest_height);
 
   if (dest_level_defined) {
     dest_info->GetLevelType(GL_TEXTURE_2D, level, &dest_type,
                             &dest_internal_format);
   } else {
@@ skipping 212 matching lines @@
   BindAndApplyTextureParameters(info);
 }
 
 // Include the auto-generated part of this file. We split this because it means
 // we can easily edit the non-auto generated parts right here in this file
 // instead of having to edit some template or the code generator.
 #include "gpu/command_buffer/service/gles2_cmd_decoder_autogen.h"
 
 }  // namespace gles2
 }  // namespace gpu