[WIP] Not for review. Zero copy.

content/common/gpu/client/gpu_channel_host.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/common/gpu/client/gpu_channel_host.h"
 
 #include <algorithm>
 
 #include "base/bind.h"
 #include "base/debug/trace_event.h"
@@ skipping 29 matching lines @@
   scoped_refptr<GpuChannelHost> host = new GpuChannelHost(factory, gpu_info);
   host->Connect(channel_handle, shutdown_event);
   return host;
 }
 
 // static
 bool GpuChannelHost::IsValidGpuMemoryBuffer(
     gfx::GpuMemoryBufferHandle handle) {
   switch (handle.type) {
     case gfx::SHARED_MEMORY_BUFFER:
+#if defined(OS_LINUX)
+    case gfx::INTEL_DRM_BUFFER:
+#endif
 #if defined(OS_MACOSX)
     case gfx::IO_SURFACE_BUFFER:
 #endif
 #if defined(OS_ANDROID)
     case gfx::SURFACE_TEXTURE_BUFFER:
 #endif
       return true;
     default:
       return false;
   }
@@ skipping 223 matching lines @@
 #endif
 }
 
 int32 GpuChannelHost::ReserveTransferBufferId() {
   return next_transfer_buffer_id_.GetNext();
 }
 
 gfx::GpuMemoryBufferHandle GpuChannelHost::ShareGpuMemoryBufferToGpuProcess(
     gfx::GpuMemoryBufferHandle source_handle) {
   switch (source_handle.type) {
+#if defined(OS_LINUX)
+    case gfx::INTEL_DRM_BUFFER:
+#endif
     case gfx::SHARED_MEMORY_BUFFER: {
       gfx::GpuMemoryBufferHandle handle;
-      handle.type = gfx::SHARED_MEMORY_BUFFER;
+      handle.type = source_handle.type;
       handle.handle = ShareToGpuProcess(source_handle.handle);
       return handle;
     }
 #if defined(OS_MACOSX)
     case gfx::IO_SURFACE_BUFFER:
       return source_handle;
 #endif
 #if defined(OS_ANDROID)
     case gfx::SURFACE_TEXTURE_BUFFER:
       return source_handle;
@@ skipping 84 matching lines @@
 
   listeners_.clear();
 }
 
 bool GpuChannelHost::MessageFilter::IsLost() const {
   AutoLock lock(lock_);
   return lost_;
 }
 
 }  // namespace content