Changed pack alignment of GPU command buffer commands.

gpu/command_buffer/service/transfer_buffer_manager.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 "gpu/command_buffer/service/transfer_buffer_manager.h"
 
 #include <limits>
 
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/debug/trace_event.h"
 #include "base/process/process_handle.h"
+#include "gpu/command_buffer/common/cmd_buffer_common.h"
 #include "gpu/command_buffer/common/gles2_cmd_utils.h"
 
 using ::base::SharedMemory;
 
 namespace gpu {
 
 TransferBufferManagerInterface::~TransferBufferManagerInterface() {
 }
 
 TransferBufferManager::TransferBufferManager()
@@ skipping 45 matching lines @@
     DVLOG(0) << "Failed to map shared memory.";
     return false;
   }
 
   // If it could be mapped register the shared memory with the ID.
   Buffer buffer;
   buffer.ptr = duped_shared_memory->memory();
   buffer.size = size;
   buffer.shared_memory = duped_shared_memory.release();
 
+  // Check buffer alignment is sane.
+  DCHECK(!(reinterpret_cast<uintptr_t>(buffer.ptr) &
+           (kCommandBufferEntrySize - 1)));
+
   shared_memory_bytes_allocated_ += size;
   TRACE_COUNTER_ID1(
       "gpu", "GpuTransferBufferMemory", this, shared_memory_bytes_allocated_);
 
   registered_buffers_[id] = buffer;
 
   return true;
 }
 
 void TransferBufferManager::DestroyTransferBuffer(int32 id) {
@@ skipping 18 matching lines @@
 
   BufferMap::iterator it = registered_buffers_.find(id);
   if (it == registered_buffers_.end())
     return Buffer();
 
   return it->second;
 }
 
 }  // namespace gpu