Index: gpu/command_buffer/common/value_state.h |
diff --git a/gpu/command_buffer/common/value_state.h b/gpu/command_buffer/common/value_state.h |
new file mode 100644 |
index 0000000000000000000000000000000000000000..478924581b8a13b45d8afd9cfce38f7cbd38b8b5 |
--- /dev/null |
+++ b/gpu/command_buffer/common/value_state.h |
@@ -0,0 +1,46 @@ |
+// Copyright (c) 2014 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_COMMON_VALUE_STATE_H_ |
+#define GPU_COMMAND_BUFFER_COMMON_VALUE_STATE_H_ |
+ |
+#include "base/containers/hash_tables.h" |
+#include "base/memory/ref_counted.h" |
+#include "gpu/gpu_export.h" |
+ |
+namespace gpu { |
+ |
+// Used to maintain Valuebuffer state, exposed to browser to |
+// support passing ValueStates via IPC. |
+union GPU_EXPORT ValueState { |
+ float float_value[4]; |
+ int int_value[4]; |
+}; |
+ |
+// Refcounted wrapper for a hash_map of subscription targets to ValueStates |
+class GPU_EXPORT ValueStateMap : public base::RefCounted<ValueStateMap> { |
+ public: |
+ ValueStateMap(); |
+ |
+ // Returns NULL if there is not ValueState for the target |
+ const ValueState* GetState(unsigned int target) const; |
+ |
+ void UpdateState(unsigned int target, const ValueState& state); |
+ |
+ protected: |
+ virtual ~ValueStateMap(); |
+ |
+ private: |
+ friend class base::RefCounted<ValueStateMap>; |
+ |
+ typedef base::hash_map<unsigned int, ValueState> Map; |
+ |
+ Map state_map_; |
+ |
+ DISALLOW_COPY_AND_ASSIGN(ValueStateMap); |
+}; |
+ |
+} // namespace gpu |
+ |
+#endif // GPU_COMMAND_BUFFER_COMMON_VALUE_STATE_H_ |