///////////////////////////////////////////////////////////////////////////
//
//  Copyright (C) 1999 Microsoft Corporation.  All Rights Reserved.
//
//  File:       d3dx8core.h
//  Content:    D3DX core types and functions
//
///////////////////////////////////////////////////////////////////////////

#include "d3dx8.h"

#ifndef __D3DX8CORE_H__
#define __D3DX8CORE_H__


///////////////////////////////////////////////////////////////////////////
// ID3DXBuffer:
// ------------
// The buffer object is used to return arbitrary lenght data.
///////////////////////////////////////////////////////////////////////////

typedef interface ID3DXBuffer ID3DXBuffer;
typedef interface ID3DXBuffer *LPD3DXBUFFER;

// {932E6A7E-C68E-45dd-A7BF-53D19C86DB1F}
DEFINE_GUID(IID_ID3DXBuffer, 
0x932e6a7e, 0xc68e, 0x45dd, 0xa7, 0xbf, 0x53, 0xd1, 0x9c, 0x86, 0xdb, 0x1f);

DECLARE_INTERFACE_(ID3DXBuffer, IUnknown)
{
    // IUnknown
    STDMETHOD(QueryInterface)(THIS_ REFIID iid, LPVOID *ppv) PURE;
    STDMETHOD_(ULONG, AddRef)(THIS) PURE;
    STDMETHOD_(ULONG, Release)(THIS) PURE;

    // ID3DXBuffer
    STDMETHOD_(LPVOID, GetBufferPointer)(THIS) PURE;
    STDMETHOD_(DWORD, GetBufferSize)(THIS) PURE;
};





///////////////////////////////////////////////////////////////////////////
// ID3DXFont:
// ----------
// Font objects contain the textures and resources needed to render
// a specific font on a specific device.
//
// Begin -
//    Prepartes device for drawing text.  This is optional.. if DrawText
//    is called outside of Begin/End, it will call Begin and End for you.
//
// DrawText -
//    Draws formatted text on a D3D device.  Some parameters are 
//    surprisingly similar to those of GDI's DrawText function.  See GDI 
//    documentation for a detailed description of these parameters.
//
// End -
//    Restores device state to how it was when Begin was called.
///////////////////////////////////////////////////////////////////////////

typedef interface ID3DXFont ID3DXFont;
typedef interface ID3DXFont *LPD3DXFONT;


// {2D501DF7-D253-4414-865F-A6D54A753138}
DEFINE_GUID( IID_ID3DXFont,
0x2d501df7, 0xd253, 0x4414, 0x86, 0x5f, 0xa6, 0xd5, 0x4a, 0x75, 0x31, 0x38);


DECLARE_INTERFACE_(ID3DXFont, IUnknown)
{
    // IUnknown
    STDMETHOD(QueryInterface)(THIS_ REFIID iid, LPVOID *ppv) PURE;
    STDMETHOD_(ULONG, AddRef)(THIS) PURE;
    STDMETHOD_(ULONG, Release)(THIS) PURE;

    // ID3DXFont
    STDMETHOD(GetDevice)(THIS_ LPDIRECT3DDEVICE8* ppDevice) PURE;
    STDMETHOD(GetLogFont)(THIS_ LOGFONT* pLogFont) PURE;

    STDMETHOD(Begin)(THIS) PURE;

    STDMETHOD_(INT, DrawTextA)(THIS_ LPCSTR  pString, INT Count, LPRECT pRect, DWORD Format, D3DCOLOR Color) PURE;
    STDMETHOD_(INT, DrawTextW)(THIS_ LPCWSTR pString, INT Count, LPRECT pRect, DWORD Format, D3DCOLOR Color) PURE;

    STDMETHOD(End)(THIS) PURE;
};

#ifndef DrawText
#ifdef UNICODE
#define DrawText DrawTextW
#else
#define DrawText DrawTextA
#endif
#endif


#ifdef __cplusplus
extern "C" {
#endif //__cplusplus

HRESULT WINAPI
    D3DXCreateFont(
        LPDIRECT3DDEVICE8   pDevice,
        HFONT               hFont,
        LPD3DXFONT*         ppFont);


HRESULT WINAPI
    D3DXCreateFontIndirect(
        LPDIRECT3DDEVICE8   pDevice,
        CONST LOGFONT*      pLogFont,
        LPD3DXFONT*         ppFont);

#ifdef __cplusplus
}
#endif //__cplusplus







///////////////////////////////////////////////////////////////////////////
// ID3DXSprite:
// ------------
// This object intends to provide an easy way to drawing sprites using D3D.
//
// Begin - 
//    Prepares device for drawing sprites
//
// Draw, DrawAffine, DrawTransform
//    Draws a sprite in screen-space.  Before transformation, the sprite is
//    the size of SrcRect, with its top-left corner at the origin (0,0).  
//    The color and alpha channels are modulated by Color.
//
// End - 
//     Restores device state to how it was when Begin was called.
///////////////////////////////////////////////////////////////////////////

typedef interface ID3DXSprite ID3DXSprite;
typedef interface ID3DXSprite *LPD3DXSPRITE;


// {E8691849-87B8-4929-9050-1B0542D5538C}
DEFINE_GUID( IID_ID3DXSprite, 
0xe8691849, 0x87b8, 0x4929, 0x90, 0x50, 0x1b, 0x5, 0x42, 0xd5, 0x53, 0x8c);


DECLARE_INTERFACE_(ID3DXSprite, IUnknown)
{
    // IUnknown
    STDMETHOD(QueryInterface)(THIS_ REFIID iid, LPVOID *ppv) PURE;
    STDMETHOD_(ULONG, AddRef)(THIS) PURE;
    STDMETHOD_(ULONG, Release)(THIS) PURE;

    // ID3DXSprite
    STDMETHOD(GetDevice)(THIS_ LPDIRECT3DDEVICE8* ppDevice) PURE;

    STDMETHOD(Begin)(THIS) PURE;

    STDMETHOD(Draw)(THIS_ LPDIRECT3DTEXTURE8  pSrcTexture, 
        CONST RECT* pSrcRect, CONST D3DXVECTOR2* pScaling, 
        CONST D3DXVECTOR2* pRotationCenter, FLOAT Rotation, 
        CONST D3DXVECTOR2* pTranslation, D3DCOLOR Color) PURE;

    STDMETHOD(DrawTransform)(THIS_ LPDIRECT3DTEXTURE8 pSrcTexture, 
        CONST RECT* pSrcRect, CONST D3DXMATRIX* pTransform, 
        D3DCOLOR Color) PURE;

    STDMETHOD(End)(THIS) PURE;
};


#ifdef __cplusplus
extern "C" {
#endif //__cplusplus


HRESULT WINAPI
    D3DXCreateSprite(
        LPDIRECT3DDEVICE8   pDevice,
        LPD3DXSPRITE*       ppSprite);

#ifdef __cplusplus
}
#endif //__cplusplus





///////////////////////////////////////////////////////////////////////////
// ID3DXRenderToSurface:
// ---------------------
// This object abstracts rendering to surfaces.  These surfaces do not 
// necessarily need to be render targets.  If they are not, a compatible
// render target is used, and the result copied into surface at end scene.
///////////////////////////////////////////////////////////////////////////

typedef struct _D3DXRTS_DESC
{
    UINT                Width;
    UINT                Height;
    D3DFORMAT           Format;
    BOOL                DepthStencil;
    D3DFORMAT           DepthStencilFormat;

} D3DXRTS_DESC;


typedef interface ID3DXRenderToSurface ID3DXRenderToSurface;
typedef interface ID3DXRenderToSurface *LPD3DXRENDERTOSURFACE;


// {69CC587C-E40C-458d-B5D3-B029E18EB60A}
DEFINE_GUID( IID_ID3DXRenderToSurface, 
0x69cc587c, 0xe40c, 0x458d, 0xb5, 0xd3, 0xb0, 0x29, 0xe1, 0x8e, 0xb6, 0xa);


DECLARE_INTERFACE_(ID3DXRenderToSurface, IUnknown)
{
    // IUnknown
    STDMETHOD(QueryInterface)(THIS_ REFIID iid, LPVOID *ppv) PURE;
    STDMETHOD_(ULONG, AddRef)(THIS) PURE;
    STDMETHOD_(ULONG, Release)(THIS) PURE;

    // ID3DXRenderToSurface
    STDMETHOD(GetDevice)(THIS_ LPDIRECT3DDEVICE8* ppDevice) PURE;
    STDMETHOD(GetDesc)(THIS_ D3DXRTS_DESC* pDesc) PURE;

    STDMETHOD(BeginScene)(THIS_ LPDIRECT3DSURFACE8 pSurface, CONST D3DVIEWPORT8* pViewport) PURE;
    STDMETHOD(EndScene)(THIS) PURE;
};


#ifdef __cplusplus
extern "C" {
#endif //__cplusplus

HRESULT WINAPI
    D3DXCreateRenderToSurface(
        LPDIRECT3DDEVICE8       pDevice,
        UINT                    Width,
        UINT                    Height,
        D3DFORMAT               Format,
        BOOL                    DepthStencil,
        D3DFORMAT               DepthStencilFormat,
        LPD3DXRENDERTOSURFACE*  ppRenderToSurface);

#ifdef __cplusplus
}
#endif //__cplusplus



///////////////////////////////////////////////////////////////////////////
// ID3DXRenderToEnvMap:
// --------------------
///////////////////////////////////////////////////////////////////////////

typedef struct _D3DXRTE_DESC
{
    UINT        Size;
    D3DFORMAT   Format;
    BOOL        DepthStencil;
    D3DFORMAT   DepthStencilFormat;
} D3DXRTE_DESC;


typedef interface ID3DXRenderToEnvMap ID3DXRenderToEnvMap;
typedef interface ID3DXRenderToEnvMap *LPD3DXRenderToEnvMap;

// {9F6779E5-60A9-4d8b-AEE4-32770F405DBA}
DEFINE_GUID( IID_ID3DXRenderToEnvMap, 
0x9f6779e5, 0x60a9, 0x4d8b, 0xae, 0xe4, 0x32, 0x77, 0xf, 0x40, 0x5d, 0xba);


DECLARE_INTERFACE_(ID3DXRenderToEnvMap, IUnknown)
{
    // IUnknown
    STDMETHOD(QueryInterface)(THIS_ REFIID iid, LPVOID *ppv) PURE;
    STDMETHOD_(ULONG, AddRef)(THIS) PURE;
    STDMETHOD_(ULONG, Release)(THIS) PURE;

    // ID3DXRenderToEnvMap
    STDMETHOD(GetDevice)(THIS_ LPDIRECT3DDEVICE8* ppDevice) PURE;
    STDMETHOD(GetDesc)(THIS_ D3DXRTE_DESC* pDesc) PURE;

    STDMETHOD(BeginCube)(THIS_ 
        LPDIRECT3DCUBETEXTURE8 pCubeTex) PURE;

    STDMETHOD(BeginSphere)(THIS_
        LPDIRECT3DTEXTURE8 pTex) PURE;

    STDMETHOD(BeginHemisphere)(THIS_ 
        LPDIRECT3DTEXTURE8 pTexZPos,
        LPDIRECT3DTEXTURE8 pTexZNeg) PURE;

    STDMETHOD(BeginParabolic)(THIS_ 
        LPDIRECT3DTEXTURE8 pTexZPos,
        LPDIRECT3DTEXTURE8 pTexZNeg) PURE;

    STDMETHOD(Face)(THIS_ D3DCUBEMAP_FACES Face) PURE;
    STDMETHOD(End)(THIS) PURE;
};


#ifdef __cplusplus
extern "C" {
#endif //__cplusplus

HRESULT WINAPI
    D3DXCreateRenderToEnvMap(
        LPDIRECT3DDEVICE8       pDevice,
        UINT                    Size,
        D3DFORMAT               Format,
        BOOL                    DepthStencil,
        D3DFORMAT               DepthStencilFormat,
        LPD3DXRenderToEnvMap*   ppRenderToEnvMap);

#ifdef __cplusplus
}
#endif //__cplusplus



///////////////////////////////////////////////////////////////////////////
// Shader assemblers:
///////////////////////////////////////////////////////////////////////////

//-------------------------------------------------------------------------
// D3DXASM flags:
// --------------
//
// D3DXASM_DEBUG
//   Generate debug info.
//
// D3DXASM_SKIPVALIDATION
//   Do not validate the generated code against known capabilities and
//   constraints.  This option is only recommended when assembling shaders
//   you KNOW will work.  (ie. have assembled before without this option.)
//-------------------------------------------------------------------------

#define D3DXASM_DEBUG           (1 << 0)
#define D3DXASM_SKIPVALIDATION  (1 << 1)


#ifdef __cplusplus
extern "C" {
#endif //__cplusplus

//-------------------------------------------------------------------------
// D3DXAssembleShader:
// ------------------------
// Assembles an ascii description of a vertex or pixel shader into 
// binary form.
//
// Parameters:
//  pSrcFile
//      Source file name
//  pSrcData
//      Pointer to source code
//  SrcDataLen
//      Size of source code, in bytes
//  Flags
//      D3DXASM_xxx flags
//  ppConstants
//      Returns an ID3DXBuffer object containing constant declarations.
//  ppCompiledShader
//      Returns an ID3DXBuffer object containing the object code.
//  ppCompilationErrors
//      Returns an ID3DXBuffer object containing ascii error messages
//-------------------------------------------------------------------------

HRESULT WINAPI
    D3DXAssembleShaderFromFileA(
        LPCSTR                pSrcFile,
        DWORD                 Flags,
        LPD3DXBUFFER*         ppConstants,
        LPD3DXBUFFER*         ppCompiledShader,
        LPD3DXBUFFER*         ppCompilationErrors);

HRESULT WINAPI
    D3DXAssembleShaderFromFileW(
        LPCWSTR               pSrcFile,
        DWORD                 Flags,
        LPD3DXBUFFER*         ppConstants,
        LPD3DXBUFFER*         ppCompiledShader,
        LPD3DXBUFFER*         ppCompilationErrors);

#ifdef UNICODE
#define D3DXAssembleShaderFromFile D3DXAssembleShaderFromFileW
#else
#define D3DXAssembleShaderFromFile D3DXAssembleShaderFromFileA
#endif

HRESULT WINAPI
    D3DXAssembleShader(
        LPCVOID               pSrcData,
        UINT                  SrcDataLen,
        DWORD                 Flags,
        LPD3DXBUFFER*         ppConstants,
        LPD3DXBUFFER*         ppCompiledShader,
        LPD3DXBUFFER*         ppCompilationErrors);


#ifdef __cplusplus
}
#endif //__cplusplus


///////////////////////////////////////////////////////////////////////////
// Misc APIs:
///////////////////////////////////////////////////////////////////////////

#ifdef __cplusplus
extern "C" {
#endif //__cplusplus


//-------------------------------------------------------------------------
// D3DXGetFVFVertexSize:
// ---------------------
// Returns the size (in bytes) of a vertex for a given FVF.
//-------------------------------------------------------------------------

UINT WINAPI
    D3DXGetFVFVertexSize(DWORD FVF);
        

//-------------------------------------------------------------------------
// D3DXGetErrorString:
// ------------------
// Returns the error string for given an hresult.  Interprets all D3DX and
// D3D hresults.
//
// Parameters:
//  hr
//      The error code to be deciphered.
//  pBuffer
//      Pointer to the buffer to be filled in.
//  BufferLen
//      Count of characters in buffer.  Any error message longer than this
//      length will be truncated to fit.
//-------------------------------------------------------------------------
HRESULT WINAPI
    D3DXGetErrorStringA(
        HRESULT             hr,
        LPSTR               pBuffer,
        UINT                BufferLen);

HRESULT WINAPI
    D3DXGetErrorStringW(
        HRESULT             hr,
        LPWSTR              pBuffer,
        UINT                BufferLen);

#ifdef UNICODE
#define D3DXGetErrorString D3DXGetErrorStringW
#else
#define D3DXGetErrorString D3DXGetErrorStringA
#endif



#ifdef __cplusplus
}
#endif //__cplusplus


#endif //__D3DX8CORE_H__