/*
-----------------------------------------------------------------------------
This source file is part of OGRE
(Object-oriented Graphics Rendering Engine)
For the latest info, see http://www.ogre3d.org/

Copyright (c) 2000-2013 Torus Knot Software Ltd

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
-----------------------------------------------------------------------------
*/
#ifndef __D3D11MAPPINGS_H__
#define __D3D11MAPPINGS_H__

#include "OgreD3D11Prerequisites.h"
#include "OgreTextureUnitState.h"
#include "OgreRenderSystem.h"
#include "OgreRoot.h"
#include "OgreD3D11RenderSystem.h"

namespace Ogre 
{
	class D3D11Mappings
	{
	public:

		/// enum identifying D3D11 filter usage type
		enum eD3DFilterUsage
		{
			/// min filter
			D3D_FUSAGE_MIN,
			/// mag filter
			D3D_FUSAGE_MAG,
			/// mip filter
			D3D_FUSAGE_MIP
		};

		/// return a D3D11 equivalent for a Ogre ShadeOptions value
		//static DWORD get(ShadeOptions so);
		/// return a D3D11 equivalent for a Ogre LightTypes value
		//static D3DLIGHTTYPE get(Light::LightTypes lightType);
		/// return a D3D11 equivalent for a Ogre TexCoordCalsMethod value
		//static DWORD get(TexCoordCalcMethod m, const D3DCAPS9& caps);
		/// return a D3D11 equivalent for a Ogre TextureAddressingMode value
		static D3D11_TEXTURE_ADDRESS_MODE get(TextureUnitState::TextureAddressingMode tam);
		/// return a D3D11 equivalent for a Ogre LayerBlendType value
		static D3D11_BLEND get(LayerBlendType lbt);
		/// return a D3D11 equivalent for a Ogre LayerBlendOperationEx value
		//static DWORD get(LayerBlendOperationEx lbo, const D3DCAPS9& devCaps);
		/// return a D3D11 equivalent for a Ogre LayerBlendSource value
		//static DWORD get(LayerBlendSource lbs);
		/// return a D3D11 equivalent for a Ogre SceneBlendFactor value
		static D3D11_BLEND get(SceneBlendFactor sbf, bool forAlpha);
		/// return a D3D11 equivalent for a Ogre SceneBlendOperation value
		static D3D11_BLEND_OP get(SceneBlendOperation sbo);
		/// return a D3D11 equivalent for a Ogre CompareFunction value
		static D3D11_COMPARISON_FUNC get(CompareFunction cf);
		/// return a D3D11 equivalent for a Ogre CillingMode value
		static D3D11_CULL_MODE get(CullingMode cm, bool flip = false);
		/// return a D3D11 equivalent for a Ogre FogMode value
		//static D3DFOGMODE get(FogMode fm);
		/// return a D3D11 equivalent for a Ogre PolygonMode value
		static D3D11_FILL_MODE get(PolygonMode level);
		/// return a D3D11 equivalent for a Ogre StencilOperation value
		static D3D11_STENCIL_OP get(StencilOperation op, bool invert = false);
		/// return a D3D11 state type for Ogre FilterType value
		static DWORD get(FilterType ft);
		static D3D11_FILTER get(const FilterOptions minification, const FilterOptions magnification, const FilterOptions mips, const bool comparison = false);
		/// return the combination of D3DUSAGE values for Ogre buffer usage
		static DWORD get(HardwareBuffer::Usage usage);
		/// Get lock options
		static D3D11_MAP get(HardwareBuffer::LockOptions options, HardwareBuffer::Usage usage);
		/// Get index type
		static DXGI_FORMAT get(HardwareIndexBuffer::IndexType itype);
		static UINT getByteWidth(HardwareIndexBuffer::IndexType itype);
		static DXGI_FORMAT getFormat(HardwareIndexBuffer::IndexType itype);
		/// Get vertex data type
		static DXGI_FORMAT get(VertexElementType vType);
		/// Get vertex semantic
		static LPCSTR get(VertexElementSemantic sem);
		static VertexElementSemantic get(LPCSTR sem);
		/// Get dx11 color
		static void get(const ColourValue& inColour, float * outColour );


		/// utility method, convert D3D11 pixel format to Ogre pixel format
		static PixelFormat _getPF(DXGI_FORMAT d3dPF);
		/// utility method, convert Ogre pixel format to D3D11 pixel format
		static DXGI_FORMAT _getPF(PixelFormat ogrePF);
		//
		static D3D11_USAGE _getUsage(HardwareBuffer::Usage mUsage);
		static D3D11_USAGE _getUsage(int mUsage);
		static UINT _getAccessFlags(HardwareBuffer::Usage mUsage);
		static UINT _getAccessFlags(int mUsage);
		static bool _isDynamic(HardwareBuffer::Usage mUsage);

		static bool _isDynamic(int mUsage);

		/// utility method, find closest Ogre pixel format that D3D11 can support
		static PixelFormat _getClosestSupportedPF(PixelFormat ogrePF);

		static TextureType _getTexType(D3D11_SRV_DIMENSION type);

		static size_t _getSizeInBytes(PixelFormat pf, size_t xcount = 1, size_t ycount = 1);

		static UINT _getTextureBindFlags(DXGI_FORMAT format, bool isdynamic);
		static UINT _getTextureMiscFlags(UINT bindflags, TextureType textype, bool isdynamic);
	};
}
#endif
