OgreD3D11Texture.h

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/*
-----------------------------------------------------------------------------
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 __D3D11TEXTURE_H__
#define __D3D11TEXTURE_H__

#include "OgreD3D11Prerequisites.h"
#include "OgreTexture.h"
#include "OgreRenderTexture.h"

#if OGRE_PLATFORM == OGRE_PLATFORM_WIN32 && !defined(_WIN32_WINNT_WIN8)
    #ifndef USE_D3DX11_LIBRARY
        #define USE_D3DX11_LIBRARY
    #endif
#endif

namespace Ogre {
    class D3D11Texture : public Texture
    {
    protected:
        // needed to store data between prepareImpl and loadImpl
        typedef SharedPtr<vector<MemoryDataStreamPtr>::type > LoadedStreams;

        D3D11Device &   mDevice;    

        //LPDIRECT3D11              *mpD3D;
        // 1D texture pointer
        ID3D11Texture1D *mp1DTex;
        // 2D texture pointer
        ID3D11Texture2D *mp2DTex;
        ID3D11Texture3D *mp3DTex;   
        ID3D11Resource  *mpTex;     

        ID3D11ShaderResourceView* mpShaderResourceView;

        bool mAutoMipMapGeneration;

        template<typename fromtype, typename totype>
        void _queryInterface(fromtype *from, totype **to)
        {
            HRESULT hr = from->QueryInterface(__uuidof(totype), (void **)to);

            if(FAILED(hr) || mDevice.isError())
            {
                this->freeInternalResources();
                String errorDescription = mDevice.getErrorDescription();
                OGRE_EXCEPT(Exception::ERR_RENDERINGAPI_ERROR, "Can't get base texture\nError Description:" + errorDescription, 
                    "D3D11Texture::_queryInterface" );
            }
        }

#ifdef USE_D3DX11_LIBRARY       
        void _loadDDS(DataStreamPtr &dstream);
#endif
        void _create1DResourceView();
        void _create2DResourceView();
        void _create3DResourceView();

        // is dynamic
        bool mIsDynamic; 

        String                          mCubeFaceNames[6];
        //D3DDEVICE_CREATION_PARAMETERS mDevCreParams;
        DXGI_FORMAT                     mBBPixelFormat;
        //D3DPOOL                           mD3DPool;
        //D3DCAPS9                      mDevCaps;
        // Dynamic textures?
        bool                            mDynamicTextures;
        typedef vector<HardwarePixelBufferSharedPtr>::type SurfaceList;
        SurfaceList                     mSurfaceList;

        D3D11_SHADER_RESOURCE_VIEW_DESC mSRVDesc;
        void _loadTex(LoadedStreams & loadedStreams);

        void _create1DTex();
        void _create2DTex();
        void _create3DTex();

        DXGI_FORMAT _chooseD3DFormat();

        void createInternalResources(void);
        void createInternalResourcesImpl(void);
        void freeInternalResources(void);
        void freeInternalResourcesImpl(void);
        void _setSrcAttributes(unsigned long width, unsigned long height, unsigned long depth, PixelFormat format);
        void _setFinalAttributes(unsigned long width, unsigned long height, unsigned long depth, PixelFormat format, UINT miscflags);

        String _getCubeFaceName(unsigned char face) const
        { assert(face < 6); return mCubeFaceNames[face]; }

        void _createSurfaceList(void);


        void prepareImpl(void);
        void unprepareImpl(void);
        void loadImpl();
        void postLoadImpl();

        LoadedStreams mLoadedStreams;
        LoadedStreams _prepareNormTex();
        LoadedStreams _prepareVolumeTex();
        LoadedStreams _prepareCubeTex();
    public:
        D3D11Texture(ResourceManager* creator, const String& name, ResourceHandle handle,
            const String& group, bool isManual, ManualResourceLoader* loader, 
            D3D11Device & device);
        ~D3D11Texture();

        void copyToTexture( TexturePtr& target );
        void loadImage( const Image &img );


        HardwarePixelBufferSharedPtr getBuffer(size_t face, size_t mipmap);

        ID3D11Resource *getTextureResource() 
        { assert(mpTex); return mpTex; }
        ID3D11ShaderResourceView *getTexture() 
        { assert(mpShaderResourceView); return mpShaderResourceView; }
        /*/// retrieves a pointer to the normal 1D/2D texture
        IDirect3DTexture9 *getNormTexture()
        { assert(mpNormTex); return mpNormTex; }
        IDirect3DCubeTexture9 *getCubeTexture()
        { assert(mpCubeTex); return mpCubeTex; }
        */


        bool releaseIfDefaultPool(void);
        bool recreateIfDefaultPool(D3D11Device & device);

        ID3D11Texture1D * GetTex1D() {return mp1DTex;};
        ID3D11Texture2D * GetTex2D() {return mp2DTex;};
        ID3D11Texture3D * GetTex3D() {return mp3DTex;};

        D3D11_SHADER_RESOURCE_VIEW_DESC getShaderResourceViewDesc() const;

        bool HasAutoMipMapGenerationEnabled() const { return mAutoMipMapGeneration; }

    };

    class D3D11RenderTexture : public RenderTexture
    {
        D3D11Device & mDevice;
        ID3D11RenderTargetView * mRenderTargetView;
        ID3D11DepthStencilView * mDepthStencilView;
    public:
        D3D11RenderTexture(const String &name, D3D11HardwarePixelBuffer *buffer, D3D11Device & device );
        virtual ~D3D11RenderTexture();

        void rebind(D3D11HardwarePixelBuffer *buffer);

        virtual void getCustomAttribute( const String& name, void *pData );

        bool requiresTextureFlipping() const { return false; }
    };

}

#endif