cc: Partial tile update for one-copy raster.

content/browser/gpu/compositor_util.cc

Index: content/browser/gpu/compositor_util.cc
diff --git a/content/browser/gpu/compositor_util.cc b/content/browser/gpu/compositor_util.cc
index a652c39dbd9c6bc62ecff1ff5dc7a4e15dfb3486..6abe2e54172bf56a6be47b1a5030344008243cf6 100644
--- a/content/browser/gpu/compositor_util.cc
+++ b/content/browser/gpu/compositor_util.cc
@@ -268,6 +268,20 @@ bool IsZeroCopyUploadEnabled() {
   return command_line.HasSwitch(switches::kEnableZeroCopy);
 }
 
+bool HavePersistentGpuMemoryBuffers() {
+  // We don't need to support this for ZeroCopy as it can't do anything with it
+  // yet.
+  if (IsZeroCopyUploadEnabled())
+    return false;
+  const base::CommandLine& command_line =
+      *base::CommandLine::ForCurrentProcess();
+  if (command_line.HasSwitch(switches::kEnableNativeGpuMemoryBuffers)) {
+    // TODO(reveman): Need native support for this. crbug.com/489438
+    return false;
+  }
+  return true;
+}

[reveman, 2015/05/22 17:15:13]

How about we land the initial version of this with this function just returning
false and then we turn it on in a follow up patch?

[danakj, 2015/05/26 19:02:52]

Sure, if you like. That'll make reverts smaller.

[danakj, 2015/05/26 23:37:34]

Done.

+
 bool IsGpuRasterizationEnabled() {
   const base::CommandLine& command_line =
       *base::CommandLine::ForCurrentProcess();