//      set.
//  cubefaces
//      allows specification of which faces of the cube-map to generate.
//      D3DX_DEFAULT, 0, and DDSCAPS2_CUBEMAP_ALLFACES all mean
//      "create all 6 faces of the cubemap". Any combination of
//      DDSCAPS2_CUBEMAP_POSITIVEX, DDSCAPS2_CUBEMAP_NEGATIVEX,
//      DDSCAPS2_CUBEMAP_POSITIVEY, DDSCAPS2_CUBEMAP_NEGATIVEY,
//      DDSCAPS2_CUBEMAP_POSITIVEZ, or DDSCAPS2_CUBEMAP_NEGATIVEZ, is
//      valid.
//  colorEmptyFaces
//      allows specification of the color to use for the faces that were not
//      specified in the cubefaces parameter.
//  pWidth
//      width in pixels; 0 or NULL is unacceptable
//      returns corrected width
//  pHeight       
//      height in pixels; 0 or NULL is unacceptable
//      returns corrected height
//  pPixelFormat
//      surface format. D3DX_DEFAULT is unacceptable.
//      returns actual format that was used
//  pDDPal
//      DDraw palette that is set (if present) on paletted surfaces.
//      It is ignored even if it is set, for non-paletted surfaces.
//  ppDDSurf
//      the ddraw surface that will be created
//  pNumMipMaps
//      the number of mipmaps generated for a particular face of the 
//      cubemap.
//
//  Notes: See notes for D3DXCheckTextureRequirements. 
//-------------------------------------------------------------------------
HRESULT WINAPI 
    D3DXCreateCubeMapTexture( LPDIRECT3DDEVICE7     pd3dDevice,
                              LPDWORD               pFlags, 
                              DWORD                 cubefaces,
                              D3DCOLOR              colorEmptyFaces,
                              LPDWORD               pWidth,  
                              LPDWORD               pHeight,  
                              D3DX_SURFACEFORMAT    *pPixelFormat,
                              LPDIRECTDRAWPALETTE   pDDPal,
                              LPDIRECTDRAWSURFACE7* ppDDSurf,
                              LPDWORD               pNumMipMaps);


//-------------------------------------------------------------------------
// D3DXCreateTextureFromFile: Create a texture object from a file or from the 
// -------------------------  resource. Only BMP and DIB are supported from the
//                            resource portion of the executable.
//
// Parameters:
//
//  pd3dDevice
//      The D3D device with which the texture is going to be used.
//  pFlags   
//      allows specification of D3DX_TEXTURE_NOMIPMAP
//      D3DX_TEXTURE_NOMIPMAP may be returned in the case where mipmap creation 
//      is not supported. Additionally, D3DX_TEXTURE_STAGE<n> can be specified
//      to indicate which texture stage the texture is for e.g. 
//      D3D_TEXTURE_STAGE1 indicates that the texture is for use with texture 
//      stage one. Stage Zero is the default if no TEXTURE_STAGE flags are
//      set.
//  pWidth  
//      Width in pixels. If 0 or D3DX_DEFAULT, the width will be taken 
//      from the file
//      returns corrected width
//  pHeight   
//      Height in pixels. If 0 or D3DX_DEFAULT, the height will be taken 
//      from the file
//      returns corrected height
//  pPixelFormat
//      If D3DX_SF_UNKNOWN is passed in, pixel format closest to the bitmap 
//      will be chosen
//      returns actual format that was used
//  pDDPal
//      DDraw palette that is set (if present) on paletted surfaces.
//      It is ignored even if it is set, for non-paletted surfaces.
//  ppDDSurf
//      The ddraw surface that will be created.
//  pNumMipMaps
//      The number of mipmaps generated.
//  pSrcName
//      File name. BMP, DIB, DDS, are supported. 
//      
//      TGA is supported for the following cases: 16, 24, 32bpp direct color and 8bpp palettized. 
//      Also, 8, 16bpp grayscale is supported. RLE versions of the above 
//      TGA formats are also supported. ColorKey and Premultiplied Alpha 
//      are not currently supported for TGA files.
//      returns created format
//
//  Notes: See notes for D3DXCheckTextureRequirements. 
//-------------------------------------------------------------------------
HRESULT WINAPI 
    D3DXCreateTextureFromFile( LPDIRECT3DDEVICE7     pd3dDevice,
                               LPDWORD               pFlags, 
                               LPDWORD               pWidth,  
                               LPDWORD               pHeight,  
                               D3DX_SURFACEFORMAT*   pPixelFormat,
                               LPDIRECTDRAWPALETTE   pDDPal,
                               LPDIRECTDRAWSURFACE7* ppDDSurf,
                               LPDWORD               pNumMipMaps,
                               LPSTR                 pSrcName,
                               D3DX_FILTERTYPE       filterType);

//-------------------------------------------------------------------------
// D3DXLoadTextureFromFile: Load from a file into a mipmap level. Doing the 
// -----------------------  necessary color conversion and rescaling. File
//                          format support is identical to 
//                          D3DXCreateTextureFromFile's.
//
//  pd3dDevice
//      The D3D device with which the texture is going to be used.
// pTexture
//      a pointer to a DD7Surface which was created with either 
//      CreateTextureFromFile or CreateTexture.
// mipMapLevel
//      indicates mipmap level
//      Note: 
//          1. Error if mipmap level doesn't exist
//          2. If D3DX_DEFAULT and equal number of mipmap levels exist
//             then all the source mip-levels are loaded
//          3. If the source has mipmaps and the dest doesn't, use the top one
//          4. If the dest has miplevels and source doesn't, we expand
//          5. If there are unequal numbers of miplevels, we expand
// pSrcName
//      File name. BMP, DIB, DDS, are supported. 
//      For details on TGA support, refer to the comments for 
//      D3DXCreateTextureFromFile
// pSrcRect
//      the source rectangle or null (whole surface)
// pDestRect
//      the destination rectangle or null (whole surface)
// filterType 
//      filter used for mipmap generation
//-------------------------------------------------------------------------
HRESULT WINAPI 
    D3DXLoadTextureFromFile( LPDIRECT3DDEVICE7    pd3dDevice,
                             LPDIRECTDRAWSURFACE7 pTexture,
                             DWORD                mipMapLevel,
                             LPSTR                pSrcName, 
                             RECT*                pSrcRect, 
                             RECT*                pDestRect,
                             D3DX_FILTERTYPE      filterType);

//-------------------------------------------------------------------------
// D3DXLoadTextureFromSurface: Load from a DDraw Surface into a mipmap level. 
// --------------------------  Doing the necessary color conversion.
//
//  pd3dDevice
//      The D3D device with which the texture is going to be used.
// pTexture
//      a pointer to a DD7Surface which was created with either 
//      CreateTextureFromFile or CreateTexture.
// mipMapLevel
//      indicates mipmap level
//      Note: 
//          1. Error if mipmap level doesn't exist
//          2. If D3DX_DEFAULT and equal number of mipmap levels exist
//             then all the source mip-levels are loaded
//          3. If the source has mipmaps and the dest doesn't, use the top one
//          4. If the dest has miplevels and source doesn't, we expand
//          5. If there are unequal numbers of miplevels, we expand
// pSurfaceSrc
//      the source surface
// pSrcRect
//      the source rectangle or null (whole surface)
// pDestRect
//      the destination rectangle or null (whole surface)
// filterType 
//      filter used for mipmap generation
//-------------------------------------------------------------------------
HRESULT WINAPI 
    D3DXLoadTextureFromSurface( LPDIRECT3DDEVICE7    pd3dDevice,
                                LPDIRECTDRAWSURFACE7 pTexture,
                                DWORD                mipMapLevel,
                                LPDIRECTDRAWSURFACE7 pSurfaceSrc, 
                                RECT*                pSrcRect, 
                                RECT*                pDestRect,
                                D3DX_FILTERTYPE      filterType);

//-------------------------------------------------------------------------
// D3DXLoadTextureFromMemory: Load a mip level from memory. Doing the necessary
// -------------------------  color conversion.
//
//  pd3dDevice
//      The D3D device with which the texture is going to be used.
// pTexture
//      a pointer to a DD7Surface which was created with either 
//      CreateTextureFromFile or CreateTexture.
// mipMapLevel
//      indicates mipmap level
//      Note: 
//          1. Error if mipmap level doesn't exist
//          2. If D3DX_DEFAULT and equal number of mipmap levels exist
//             then all the source mip-levels are loaded
//          3. If the source has mipmaps and the dest doesn't, use the top one
//          4. If the dest has miplevels and source doesn't, we expand
//          5. If there are unequal numbers of miplevels, we expand
// pMemory
//      pointer to source memory from which the texture will be loaded
// pDDPal
//      DirectDraw Palette, that the app passes in optionally if the memory is 
//      supposed to be paletteized.
// srcPixelFormat
//      PixelFormat of the source.
// srcPitch
//      The pitch of the memory or D3DX_DEFAULT (based on srcPixelFormat)
// pDestRect
//      The destination rectangle or null (whole surface)
// filterType 
//      filter used for mipmap generation
// 
// Assumptions: The source (memory) is loaded in full
//-------------------------------------------------------------------------
HRESULT WINAPI 
    D3DXLoadTextureFromMemory( LPDIRECT3DDEVICE7    pd3dDevice, 
                               LPDIRECTDRAWSURFACE7 pTexture,
                               DWORD                mipMapLevel, 
                               LPVOID               pMemory,
                               LPDIRECTDRAWPALETTE  pDDPal,
                               D3DX_SURFACEFORMAT   srcPixelFormat,
                               DWORD                srcPitch,
                               RECT*                pDestRect,
                               D3DX_FILTERTYPE      filterType);

#ifdef __cplusplus
}
#endif //__cplusplus    

//-------------------------------------------------------------------------
// Flags for texture create functions; applies to 
// D3DXCreateTexture, D3DXCreateCubeMapTexture and D3DXCreateTextureFromFile.
//

// Flag to indicate that mipmap generation is not desired.
#define D3DX_TEXTURE_NOMIPMAP  (1 << 8)

// Flags to indicate which texture stage the texture is
// intended for use with. Specifying the stage is necessary at
// texture creation time for HW devices that expose the
// D3DDEVCAPS_SEPARATETEXTUREMEMORIES bit in their D3DDEVICEDESC
// structure.
#define D3DX_TEXTURE_STAGE0    (0)
#define D3DX_TEXTURE_STAGE1    (1)
#define D3DX_TEXTURE_STAGE2    (2)
#define D3DX_TEXTURE_STAGE3    (3)
#define D3DX_TEXTURE_STAGE4    (4)
#define D3DX_TEXTURE_STAGE5    (5)
#define D3DX_TEXTURE_STAGE6    (6)
#define D3DX_TEXTURE_STAGE7    (7)

// Mask to extract the texture stage value out of the flags to
// the texture create functions.
#define D3DX_TEXTURE_STAGE_MASK (0x7)

#endif //__D3DXCORE_H__