Adds MapBufferSubData and MapTexSubImage2D....

gpu/command_buffer/client/cmd_buffer_helper.h

 // Copyright (c) 2009 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.
 
 // This file contains the command buffer helper class.
 
 #ifndef GPU_COMMAND_BUFFER_CLIENT_CMD_BUFFER_HELPER_H_
 #define GPU_COMMAND_BUFFER_CLIENT_CMD_BUFFER_HELPER_H_
 
 #include <string.h>
@@ skipping 91 matching lines @@
 
   // Typed version of GetSpace for immediate commands.
   template <typename T>
   T& GetImmediateCmdSpaceTotalSize(size_t total_space) {
     COMPILE_ASSERT(T::kArgFlags == cmd::kAtLeastN, Cmd_kArgFlags_not_kAtLeastN);
     uint32 space_needed = ComputeNumEntries(total_space);
     void* data = GetSpace(space_needed);
     return *reinterpret_cast<T*>(data);
   }
 
+  int32 last_token_read() const {
+    return last_token_read_;
+  }
+
   error::Error GetError();
 
   // Common Commands
   void Noop(uint32 skip_count) {
     cmd::Noop& cmd = GetImmediateCmdSpace<cmd::Noop>(
         skip_count * sizeof(CommandBufferEntry));
     cmd.Init(skip_count);
   }
 
   void SetToken(uint32 token) {
@@ skipping 67 matching lines @@
                      uint32 shared_memory_id,
                      uint32 shared_memory_offset) {
     cmd::GetBucketData& cmd = GetCmdSpace<cmd::GetBucketData>();
     cmd.Init(bucket_id,
              offset,
              size,
              shared_memory_id,
              shared_memory_offset);
   }
 
+  CommandBuffer* command_buffer() const {
+    return command_buffer_;
+  }
+
  private:
   // Waits until get changes, updating the value of get_.
   void WaitForGetChange();
 
   // Returns the number of available entries (they may not be contiguous).
   int32 AvailableEntries() {
     return (get_ - put_ - 1 + usable_entry_count_) % usable_entry_count_;
   }
 
   // Synchronize with current service state.
   void SynchronizeState(CommandBuffer::State state);
 
   CommandBuffer* command_buffer_;
   Buffer ring_buffer_;
   CommandBufferEntry *entries_;
   int32 total_entry_count_;  // the total number of entries
   int32 usable_entry_count_;  // the usable number (ie, minus space for jump)
   int32 token_;
   int32 last_token_read_;
   int32 get_;
   int32 put_;
 
   friend class CommandBufferHelperTest;
   DISALLOW_COPY_AND_ASSIGN(CommandBufferHelper);
 };
 
 }  // namespace gpu
 
 #endif  // GPU_COMMAND_BUFFER_CLIENT_CMD_BUFFER_HELPER_H_