/*
**  ClanLib SDK
**  Copyright (c) 1997-2020 The ClanLib Team
**
**  This software is provided 'as-is', without any express or implied
**  warranty.  In no event will the authors be held liable for any damages
**  arising from the use of this software.
**
**  Permission is granted to anyone to use this software for any purpose,
**  including commercial applications, and to alter it and redistribute it
**  freely, subject to the following restrictions:
**
**  1. The origin of this software must not be misrepresented; you must not
**     claim that you wrote the original software. If you use this software
**     in a product, an acknowledgment in the product documentation would be
**     appreciated but is not required.
**  2. Altered source versions must be plainly marked as such, and must not be
**     misrepresented as being the original software.
**  3. This notice may not be removed or altered from any source distribution.
**
**  Note: Some of the libraries ClanLib may link to may have additional
**  requirements or restrictions.
**
**  File Author(s):
**
**    Magnus Norddahl
*/

#pragma once

#include "API/Display/TargetProviders/element_array_buffer_provider.h"

namespace clan
{
	class D3DElementArrayBufferProvider : public ElementArrayBufferProvider
	{
	public:
		D3DElementArrayBufferProvider(const ComPtr<ID3D11Device> &device);
		~D3DElementArrayBufferProvider();
		void create(int size, BufferUsage usage);
		void create(void *data, int size, BufferUsage usage);

		ComPtr<ID3D11Buffer> &get_buffer(const ComPtr<ID3D11Device> &device);

		void upload_data(GraphicContext &gc, const void *data, int size);
		void copy_from(GraphicContext &gc, TransferBuffer &buffer, int dest_pos, int src_pos, int size);
		void copy_to(GraphicContext &gc, TransferBuffer &buffer, int dest_pos, int src_pos, int size);

	private:
		struct DeviceHandles
		{
			DeviceHandles(const ComPtr<ID3D11Device> &device) : device(device) { }
			ComPtr<ID3D11Device> device;
			ComPtr<ID3D11Buffer> buffer;
		};

		void device_destroyed(ID3D11Device *device);
		DeviceHandles &get_handles(const ComPtr<ID3D11Device> &device);

		static D3D11_MAP to_d3d_map_type(BufferAccess access);

		std::vector<std::shared_ptr<DeviceHandles> > handles;
		int size;
	};
}
