Increase GPU transfer buffer alignment to 16 bytes.

gpu/command_buffer/client/gles2_implementation.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_GLES2_IMPLEMENTATION_H_
 #define GPU_COMMAND_BUFFER_CLIENT_GLES2_IMPLEMENTATION_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 140 matching lines @@
   // used for testing only. If more things are reseved add them here.
   static const unsigned int kStartingOffset = kMaxSizeOfSimpleResult;
 
   // Size in bytes to issue async flush for transfer buffer.
   static const unsigned int kSizeToFlush = 256 * 1024;
 
   // The bucket used for results. Public for testing only.
   static const uint32_t kResultBucketId = 1;
 
   // Alignment of allocations.
-  static const unsigned int kAlignment = 4;
+  static const unsigned int kAlignment = 16;
 
   // GL names for the buffers used to emulate client side buffers.
   static const GLuint kClientSideArrayId = 0xFEDCBA98u;
   static const GLuint kClientSideElementArrayId = 0xFEDCBA99u;
 
   // Number of swap buffers allowed before waiting.
   static const size_t kMaxSwapBuffers = 2;
 
   GLES2Implementation(GLES2CmdHelper* helper,
                       ShareGroup* share_group,
@@ skipping 701 matching lines @@
 
 inline bool GLES2Implementation::GetTexParameterivHelper(
     GLenum /* target */, GLenum /* pname */, GLint* /* params */) {
   return false;
 }
 
 }  // namespace gles2
 }  // namespace gpu
 
 #endif  // GPU_COMMAND_BUFFER_CLIENT_GLES2_IMPLEMENTATION_H_