chrome/browser/gpu/gl_string_manager.cc

   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