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      1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #include "chrome/browser/gpu/gl_string_manager.h"
      6 
      7 #include "base/prefs/pref_registry_simple.h"
      8 #include "base/prefs/pref_service.h"
      9 #include "chrome/browser/browser_process.h"
     10 #include "chrome/common/pref_names.h"
     11 #include "content/public/browser/gpu_data_manager.h"
     12 
     13 // static
     14 void GLStringManager::RegisterPrefs(PrefRegistrySimple* registry) {
     15   registry->RegisterStringPref(prefs::kGLVendorString, std::string());
     16   registry->RegisterStringPref(prefs::kGLRendererString, std::string());
     17   registry->RegisterStringPref(prefs::kGLVersionString, std::string());
     18 }
     19 
     20 GLStringManager::GLStringManager() {
     21 }
     22 
     23 GLStringManager::~GLStringManager() {
     24 }
     25 
     26 void GLStringManager::Initialize() {
     27   // On MacOSX or Windows, preliminary GPUInfo is enough.
     28 #if defined(OS_LINUX)
     29   // We never remove this observer from GpuDataManager.
     30   content::GpuDataManager::GetInstance()->AddObserver(this);
     31 
     32   PrefService* local_state = g_browser_process->local_state();
     33   if (!local_state)
     34     return;
     35 
     36   gl_vendor_ = local_state->GetString(prefs::kGLVendorString);
     37   gl_renderer_ = local_state->GetString(prefs::kGLRendererString);
     38   gl_version_ = local_state->GetString(prefs::kGLVersionString);
     39 
     40   if (!gl_vendor_.empty() || !gl_renderer_.empty() || !gl_version_.empty()) {
     41     content::GpuDataManager::GetInstance()->SetGLStrings(
     42         gl_vendor_, gl_renderer_, gl_version_);
     43   }
     44 #endif
     45 }
     46 
     47 void GLStringManager::OnGpuInfoUpdate() {
     48   std::string gl_vendor, gl_renderer, gl_version;
     49   content::GpuDataManager::GetInstance()->GetGLStrings(
     50       &gl_vendor, &gl_renderer, &gl_version);
     51 
     52   PrefService* local_state = g_browser_process->local_state();
     53   if (!local_state)
     54     return;
     55 
     56   if (!gl_vendor.empty() && gl_vendor != gl_vendor_) {
     57     gl_vendor_ = gl_vendor;
     58     local_state->SetString(prefs::kGLVendorString, gl_vendor_);
     59   }
     60   if (!gl_renderer.empty() && gl_renderer != gl_renderer_) {
     61     gl_renderer_ = gl_renderer;
     62     local_state->SetString(prefs::kGLRendererString, gl_renderer_);
     63   }
     64   if (!gl_version.empty() && gl_version != gl_version_) {
     65     gl_version_ = gl_version;
     66     local_state->SetString(prefs::kGLVersionString, gl_version_);
     67   }
     68 }
     69 
     70