Improving canvas 2D performance by switching graphics rendering pipeline.

content/public/common/content_switches.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 "build/build_config.h"
 #include "content/public/common/content_switches.h"
 
 namespace switches {
 
 // The number of MSAA samples for canvas2D. Requires MSAA support by GPU to
@@ skipping 343 matching lines @@
 const char kEnableBrowserSideNavigation[]   = "enable-browser-side-navigation";
 
 // Enables display list based 2d canvas implementation. Options:
 //  1. Enable: allow browser to use display list for 2d canvas (browser makes
 //     decision).
 //  2. Force: browser always uses display list for 2d canvas.
 const char kEnableDisplayList2dCanvas[]     = "enable-display-list-2d-canvas";
 const char kForceDisplayList2dCanvas[]      = "force-display-list-2d-canvas";
 const char kDisableDisplayList2dCanvas[]    = "disable-display-list-2d-canvas";
 
+// Enables dynamic rendering pipeline switching to optimize the
+// performance of 2d canvas
+const char kEnableCanvas2dDynamicPipelineMode[] =
+    "enable-canvas-2d-dynamic-pipeline-mode";

[Justin Novosad, 2016/07/12 19:31:23]

pipeline->rendering
Pipeline is a loaded word that could easily be misinterpred in this case, let's
call this a rendering mode.

[sebastienlc, 2016/07/13 19:51:02]

Done.

+
 // Enable experimental canvas features, e.g. canvas 2D context attributes
 const char kEnableExperimentalCanvasFeatures[] =
     "enable-experimental-canvas-features";
 
 // Enables Web Platform features that are in development.
 const char kEnableExperimentalWebPlatformFeatures[] =
     "enable-experimental-web-platform-features";
 
 // Comma-separated list of feature names to enable. See also kDisableFeatures.
 const char kEnableFeatures[] = "enable-features";
@@ skipping 690 matching lines @@
 // the given directory. Used primarily to gather samples for IPC fuzzing.
 const char kIpcDumpDirectory[] = "ipc-dump-directory";
 
 // Specifies the testcase used by the IPC fuzzer.
 const char kIpcFuzzerTestcase[] = "ipc-fuzzer-testcase";
 #endif
 
 // Don't dump stuff here, follow the same order as the header.
 
 }  // namespace switches