Tile Compression

cc/base/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 "cc/base/switches.h"
 
 #include "base/command_line.h"
 
 namespace cc {
 namespace switches {
@@ skipping 75 matching lines @@
 // Show rects in the HUD around damage as it is recorded into each render
 // surface.
 const char kShowSurfaceDamageRects[] = "show-surface-damage-rects";
 const char kUIShowSurfaceDamageRects[] = "ui-show-surface-damage-rects";
 
 // Show rects in the HUD around the screen-space transformed bounds of every
 // layer.
 const char kShowScreenSpaceRects[] = "show-screenspace-rects";
 const char kUIShowScreenSpaceRects[] = "ui-show-screenspace-rects";
 
+// Don't allow compressed textures for tiles.
+const char kDisableTileCompression[] = "disable-tile-compression";
+
+// Compress textures used for tiles if the gpu supports it.
+const char kEnableTileCompression[] = "enable-tile-compression";
+
+// Only compress non-urgent tiles, where the urgent level can be any of the
+// different bins found in ManagedTileBin. Defaults to -1 which means all bins.
+const char kTileCompressionThreshold[] = "tile-compression-threshold";
+
+// Set the preferred tile compression method.
+const char kTileCompressionMethod[] = "tile-compression-method";
+
+bool IsTileCompressionEnabled() {
+  const CommandLine& command_line = *CommandLine::ForCurrentProcess();
+
+  if (command_line.HasSwitch(switches::kDisableTileCompression))
+    return false;
+  else if (command_line.HasSwitch(switches::kEnableTileCompression))
+    return true;
+
+  return false;
+}
+
 // Show rects in the HUD around the screen-space transformed bounds of every
 // layer's replica, when they have one.
 const char kShowReplicaScreenSpaceRects[] = "show-replica-screenspace-rects";
 const char kUIShowReplicaScreenSpaceRects[] =
     "ui-show-replica-screenspace-rects";
 
 // Show rects in the HUD wherever something is known to be drawn opaque and is
 // considered occluding the pixels behind it.
 const char kShowOccludingRects[] = "show-occluding-rects";
 const char kUIShowOccludingRects[] = "ui-show-occluding-rects";
 
 // Show rects in the HUD wherever something is not known to be drawn opaque and
 // is not considered to be occluding the pixels behind it.
 const char kShowNonOccludingRects[] = "show-nonoccluding-rects";
 const char kUIShowNonOccludingRects[] = "ui-show-nonoccluding-rects";
 
 // Prevents the layer tree unit tests from timing out.
 const char kCCLayerTreeTestNoTimeout[] = "cc-layer-tree-test-no-timeout";
 
 // Makes pixel tests write their output instead of read it.
 const char kCCRebaselinePixeltests[] = "cc-rebaseline-pixeltests";
 
 }  // namespace switches
 }  // namespace cc