Make transfer buffer reallocate at default size.

gpu/command_buffer/client/transfer_buffer.h

 // 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.
 
 #ifndef GPU_COMMAND_BUFFER_CLIENT_TRANSFER_BUFFER_H_
 #define GPU_COMMAND_BUFFER_CLIENT_TRANSFER_BUFFER_H_
 
 #include "../../gpu_export.h"
 #include "../common/buffer.h"
 #include "../common/compiler_specific.h"
@@ skipping 74 matching lines @@
 };
 
 // Class that manages the transfer buffer.
 class GPU_EXPORT TransferBuffer : public TransferBufferInterface {
  public:
   TransferBuffer(CommandBufferHelper* helper);
   virtual ~TransferBuffer();
 
   // Overridden from TransferBufferInterface.
   virtual bool Initialize(
-      unsigned int buffer_size,
+      unsigned int default_buffer_size,
       unsigned int result_size,
       unsigned int min_buffer_size,
       unsigned int max_buffer_size,
       unsigned int alignment,
       unsigned int size_to_flush) OVERRIDE;
   virtual int GetShmId() OVERRIDE;
   virtual void* GetResultBuffer() OVERRIDE;
   virtual int GetResultOffset() OVERRIDE;
   virtual void Free() OVERRIDE;
   virtual bool HaveBuffer() const OVERRIDE;
@@ skipping 12 matching lines @@
   void ReallocateRingBuffer(unsigned int size);
 
   void AllocateRingBuffer(unsigned int size);
 
   CommandBufferHelper* helper_;
   scoped_ptr<AlignedRingBuffer> ring_buffer_;
 
   // size reserved for results
   unsigned int result_size_;
 
+  // default size. Size we want when starting or re-allocating
+  unsigned int default_buffer_size_;
+
   // min size we'll consider successful
   unsigned int min_buffer_size_;
 
   // max size we'll let the buffer grow
   unsigned int max_buffer_size_;
 
   // alignment for allocations
   unsigned int alignment_;
 
   // Size at which to do an async flush. 0 = never.
@@ skipping 83 matching lines @@
   }
 
   unsigned int num_elements() const {
     return size() / sizeof(T);
   }
 };
 
 }  // namespace gpu
 
 #endif  // GPU_COMMAND_BUFFER_CLIENT_TRANSFER_BUFFER_H_