cc: Trigger GPU rasterization based on a per-layer hint

content/browser/gpu/compositor_util.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 "content/browser/gpu/compositor_util.h"
 
 #include "base/command_line.h"
 #include "base/logging.h"
 #include "build/build_config.h"
 #include "cc/base/switches.h"
@@ skipping 251 matching lines @@
   if (enabled &&
       (!IsForceCompositingModeEnabled() || !IsThreadedCompositingEnabled())) {
     enabled = false;
     LOG(ERROR) << "Disabling delegated-rendering because it needs "
                << "force-compositing-mode and threaded-compositing.";
   }
 
   return enabled;
 }
 
+bool IsImplSidePaintingEnabled() {
+  const CommandLine& command_line = *CommandLine::ForCurrentProcess();
+
+  if (command_line.HasSwitch(switches::kDisableImplSidePainting))
+    return false;
+  else if (command_line.HasSwitch(switches::kEnableImplSidePainting))
+    return true;
+
+#if defined(OS_ANDROID)
+  return true;
+#else
+  return false;
+#endif
+}
+
 base::Value* GetFeatureStatus() {
   const CommandLine& command_line = *CommandLine::ForCurrentProcess();
   GpuDataManagerImpl* manager = GpuDataManagerImpl::GetInstance();
   std::string gpu_access_blocked_reason;
   bool gpu_access_blocked =
       !manager->GpuAccessAllowed(&gpu_access_blocked_reason);
 
   base::DictionaryValue* feature_status_dict = new base::DictionaryValue();
 
   bool eof = false;
   for (size_t i = 0; !eof; ++i) {
     const GpuFeatureInfo gpu_feature_info = GetGpuFeatureInfo(i, &eof);
     // force_compositing_mode status is part of the compositing status.
     if (gpu_feature_info.name == "force_compositing_mode")
       continue;
 
     std::string status;
     if (gpu_feature_info.disabled) {
       status = "disabled";
       if (gpu_feature_info.name == "css_animation") {
         status += "_software_animated";
       } else if (gpu_feature_info.name == "raster") {
-        if (cc::switches::IsImplSidePaintingEnabled())
+        if (IsImplSidePaintingEnabled())
           status += "_software_multithreaded";
         else
           status += "_software";
       } else {
         if (gpu_feature_info.fallback_to_software)
           status += "_software";
         else
           status += "_off";
       }
     } else if (manager->ShouldUseSwiftShader()) {
@@ skipping 21 matching lines @@
           status += "_threaded";
       }
       if (gpu_feature_info.name == "css_animation") {
         if (has_thread)
           status = "accelerated_threaded";
         else
           status = "accelerated";
       }
     }
     // TODO(reveman): Remove this when crbug.com/223286 has been fixed.
-    if (gpu_feature_info.name == "raster" &&
-        cc::switches::IsImplSidePaintingEnabled()) {
+    if (gpu_feature_info.name == "raster" && IsImplSidePaintingEnabled())
       status = "disabled_software_multithreaded";
-    }
     feature_status_dict->SetString(
         gpu_feature_info.name.c_str(), status.c_str());
   }
   return feature_status_dict;
 }
 
 base::Value* GetProblems() {
   GpuDataManagerImpl* manager = GpuDataManagerImpl::GetInstance();
   std::string gpu_access_blocked_reason;
   bool gpu_access_blocked =
@@ skipping 34 matching lines @@
   return problem_list;
 }
 
 base::Value* GetDriverBugWorkarounds() {
   base::ListValue* workaround_list = new base::ListValue();
   GpuDataManagerImpl::GetInstance()->GetDriverBugWorkarounds(workaround_list);
   return workaround_list;
 }
 
 }  // namespace content