Repo created

libs/drape/attribute_provider.hpp

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+#pragma once
+
+#include "drape/binding_info.hpp"
+#include "drape/pointers.hpp"
+
+#include <vector>
+
+namespace dp
+{
+class AttributeProvider
+{
+public:
+  AttributeProvider(uint8_t streamCount, uint32_t vertexCount);
+
+  bool IsDataExists() const;
+  uint32_t GetVertexCount() const;
+
+  uint8_t GetStreamCount() const;
+  void const * GetRawPointer(uint8_t streamIndex);
+  BindingInfo const & GetBindingInfo(uint8_t streamIndex) const;
+
+  void Advance(uint32_t vertexCount);
+
+  void InitStream(uint8_t streamIndex, BindingInfo const & bindingInfo, ref_ptr<void> data);
+
+  void Reset(uint32_t vertexCount);
+  void UpdateStream(uint8_t streamIndex, ref_ptr<void> data);
+
+private:
+  uint32_t m_vertexCount;
+
+  struct AttributeStream
+  {
+    BindingInfo m_binding;
+    ref_ptr<void> m_data;
+  };
+  std::vector<AttributeStream> m_streams;
+#ifdef DEBUG
+  void CheckStreams() const;
+  void InitCheckStream(uint8_t streamIndex);
+  std::vector<bool> m_checkInfo;
+#endif
+};
+}  // namespace dp