Subversion Repositories spacemission

unit DXRender;

 

 

 

  Windows,

  DirectDraw,

  {$ifdef DX7}

  Direct3D;

  {$endif}

  {$IfDef DX9}

  Direct3D9, Direct3D, D3DX9, {Direct3D8,} DX7toDX8;

  {$EndIf}

  DirectX;

 

  DXR_MAXTEXTURE = 4;

 

  TDXR_Value = Double;

 

  TDXR_Color = DWORD;

  TDXR_SurfaceColor = DWORD;

 

  {  TDXR_Option  }

 

  PDXR_Option = ^TDXR_Option;

  TDXR_Option = (

    DXR_OPTION_VERSION,

    DXR_OPTION_MMXENABLE,

    DXR_OPTION_RENDERPRIMITIVES

  );                            

 

  {  TDXR_ShadeMode  }

 

  TDXR_ShadeMode = (

    DXR_SHADEMODE_FLAT,

    DXR_SHADEMODE_GOURAUD

  );

 

  {  TDXR_Blend  }

 

  TDXR_Blend = (

    // for blending

    DXR_BLEND_ZERO,                        // r=0

    DXR_BLEND_ONE1,                        // r=c1

    DXR_BLEND_ONE2,                        // r=c2

    DXR_BLEND_ONE1_ADD_ONE2,               // r=c1+c2

    DXR_BLEND_ONE1_SUB_ONE2,               // r=c1-c2

    DXR_BLEND_ONE2_SUB_ONE1,               // r=c2-c1

    DXR_BLEND_ONE1_MUL_ONE2,               // r=c1*c2

    DXR_BLEND_SRCALPHA1,                   // r=c1*a1

    DXR_BLEND_SRCALPHA1_ADD_ONE2,          // r=c1*a1+c2

    DXR_BLEND_ONE2_SUB_SRCALPHA1,          // r=c2-c1*a1

    DXR_BLEND_SRCALPHA1_ADD_INVSRCALPHA2,  // r=c1*a1+c2*(1-a2)

    DXR_BLEND_INVSRCALPHA1_ADD_SRCALPHA2,  // r=c1*(1-a1)+c2*a2

    // for lighting

    DXR_BLEND_DECAL,                       // r=c1

    DXR_BLEND_DECALALPHA,                  // r=c1    ra=a2

    DXR_BLEND_MODULATE,                    // r=c1*c2 ra=a2

    DXR_BLEND_MODULATEALPHA,               // r=c1*c2

    DXR_BLEND_ADD                          // r=c1+c2 ra=a2

  );

 

  {  TDXR_TextureFilter  }

 

  TDXR_TextureFilter = (

    DXR_TEXTUREFILTER_NEAREST,

    DXR_TEXTUREFILTER_LINEAR,

    DXR_TEXTUREFILTER_MIPMAP_NEAREST,

    DXR_TEXTUREFILTER_MIPMAP_LINEAR

  );

 

  {  TDXR_TextureAddress  }

 

  TDXR_TextureAddress = (

    DXR_TEXTUREADDRESS_TILE,           // tx=tx and WidthMask ty=ty and HeightMask

    DXR_TEXTUREADDRESS_DONOTCLIP       // tx=tx               ty=ty

  );

 

  {  TDXR_CmpFunc  }

 

  TDXR_CmpFunc = (

    DXR_CMPFUNC_NEVER,

    DXR_CMPFUNC_LESS,

    DXR_CMPFUNC_EQUAL,

    DXR_CMPFUNC_LESSEQUAL,

    DXR_CMPFUNC_GREATER,

    DXR_CMPFUNC_NOTEQUAL,

    DXR_CMPFUNC_GREATEREQUAL,

    DXR_CMPFUNC_ALWAYS

  );

 

  {  TDXR_ColorType  }

 

  TDXR_ColorType = (

    DXR_COLORTYPE_INDEXED,     // Palette indexed color

    DXR_COLORTYPE_RGB          // RGB color

  );

 

  {  TDXR_ColorChannel  }

 

  TDXR_ColorChannel = record

    Mask: DWORD;                // Bit Mask

    BitCount: DWORD;            // Number of bit

    rshift: DWORD;

    lshift: DWORD;

  end;

 

  {  TDXR_Surface  }

 

  PDXR_Surface = ^TDXR_Surface;

  TDXR_Surface = record

    ColorType: TDXR_ColorType;   // Color type

    Width, Height: DWORD;        // Size of surface

    WidthBit, HeightBit: DWORD;  // Size of surface (Number of bit)

    Width2, Height2: DWORD;      // 1 shl WidthBit, 1 shl HeightBit

    WidthMask, HeightMask: DWORD;// Bit Mask of size of surface

    BitCount: DWORD;             // BitCount per Pixel(1, 2, 4, 8, 16, 24, 32 only)

    Bits: Pointer;               // Pointer to pixeldata(x:0 y:0)

    Pitch: Integer;              // Offset of next scanline

    PitchBit: Integer;           // Offset of next scanline (Number of bit)

    MipmapChain: PDXR_Surface;

    case Integer of

      0: (

        { Indexed color }

        idx_index: TDXR_ColorChannel;  // Index channel

        idx_alpha: TDXR_ColorChannel;  // Alpha channel

        idx_palette: array[0..255] of TPaletteEntry;

                                       // Palette

      );

      1: (

        { RGB color }

        rgb_red: TDXR_ColorChannel;    // Red channel

        rgb_green: TDXR_ColorChannel;  // Green channel

        rgb_blue: TDXR_ColorChannel;   // Blue channel

        rgb_alpha: TDXR_ColorChannel;  // Alpha channel

      );

  end;

 

  {  TDXR_Vertex  }

 

  PDXR_Vertex = ^TDXR_Vertex;

  TDXR_Vertex = record

    sx: TDXR_Value;            // Screen coordinates

    sy: TDXR_Value;

    sz: TDXR_Value;

    rhw: TDXR_Value;           // 1/sz

    color: TDXR_Color;

    specular: TDXR_Color;

    tu, tv: array[0..DXR_MAXTEXTURE-1] of TDXR_Value;

  end;

 

  PPDXR_Vertex = ^PDXR_Vertex;

 

  {  TDXR_PrimitiveType  }

 

  TDXR_PrimitiveType = (

    DXR_PRIMITIVETYPE_TRIANGLELIST,

    DXR_PRIMITIVETYPE_TRIANGLESTRIP

  );

 

  {  TDXR_TextureLayerBlend  }

 

  TDXR_TextureLayerBlend = (

    DXR_TEXTURELAYERBLEND_TEXTURE,

    DXR_TEXTURELAYERBLEND_LAST,

    DXR_TEXTURELAYERBLEND_NOBLEND

  );

 

  {  TDXR_TextureLayer  }

 

  PDXR_TextureLayer = ^TDXR_TextureLayer;

  TDXR_TextureLayer = record

    Surface: PDXR_Surface;

    LayerBlend: TDXR_TextureLayerBlend;

    Blend: TDXR_Blend;

    ColorKeyEnable: Boolean;

    ColorKey: TDXR_SurfaceColor;

    TextureAddress: TDXR_TextureAddress;

    BumpTexture: Integer;

  end;

 

  {  TDXR_Cull  }

 

  TDXR_Cull = (

    DXR_CULL_NONE,

    DXR_CULL_CW,

    DXR_CULL_CCW

  );

 

  {  TDXR_RenderStates  }

 

  TDXR_RenderStates = record

    DitherEnable: Boolean;

    SpecularEnable: Boolean;

    CullMode: TDXR_Cull;

    Shade: TDXR_ShadeMode;

    TexBlend: TDXR_Blend;

    Blend: TDXR_Blend;

    TextureEnable: Boolean;

    TextureList: array[0..DXR_MAXTEXTURE-1] of TDXR_TextureLayer;

    TextureFilter: TDXR_TextureFilter;

    ZBuffer: PDXR_Surface;

    ZFunc: TDXR_CmpFunc;

    ZWriteEnable: Boolean;

    EnableDrawLine: Integer;

  end;

 

function dxrGetOption(Option: TDXR_Option): DWORD;

procedure dxrSetOption(Option: TDXR_Option; Value: DWORD);

 

procedure dxrMakeIndexedSurface(var Surface: TDXR_Surface; Width, Height, BitCount: DWORD;

  Bits: Pointer; pitch: Integer; idx_index, idx_alpha: DWORD);

procedure dxrMakeRGBSurface(var Surface: TDXR_Surface; Width, Height, BitCount: DWORD;

  Bits: Pointer; pitch: Integer; rgb_red, rgb_green, rgb_blue, rgb_alpha: DWORD);

function dxrScanLine(const Surface: TDXR_Surface; y: DWORD): Pointer;

procedure dxrZBufferClear(const Surface: TDXR_Surface);

 

function dxrDDSurfaceLock(DDSurface: {$IFDEF D3D_deprecated}IDirectDrawSurface{$ELSE}IDirectDrawSurface7{$ENDIF}; var Surface: TDXR_Surface): Boolean; {$IFDEF VER9UP}inline;{$ENDIF}

function dxrDDSurfaceLock2(DDSurface: {$IFDEF D3D_deprecated}IDirectDrawSurface{$ELSE}IDirectDrawSurface7{$ENDIF}; var ddsd: {$IFDEF D3D_deprecated}TDDSurfaceDesc{$ELSE}TDDSurfaceDesc2{$ENDIF};

  var Surface: TDXR_Surface): Boolean; {$IFDEF VER9UP}inline;{$ENDIF}

procedure dxrDDSurfaceUnLock(DDSurface: {$IFDEF D3D_deprecated}IDirectDrawSurface{$ELSE}IDirectDrawSurface7{$ENDIF}; const Surface: TDXR_Surface); {$IFDEF VER9UP}inline;{$ENDIF}

 

procedure dxrDefRenderStates(var States: TDXR_RenderStates);

 

procedure dxrDrawPrimitive(const Dest: TDXR_Surface; const States: TDXR_RenderStates; PrimitiveType: TDXR_PrimitiveType;

  VertexList: PDXR_Vertex; VertexCount: DWORD);

procedure dxrDrawPointeredPrimitive(const Dest: TDXR_Surface; const States: TDXR_RenderStates; PrimitiveType: TDXR_PrimitiveType;

  VertexList: PPDXR_Vertex; VertexCount: DWORD);

procedure dxrDrawIndexedPrimitive(const Dest: TDXR_Surface; const States: TDXR_RenderStates; PrimitiveType: TDXR_PrimitiveType;

  VertexList: PDXR_Vertex; VertexCount: DWORD; IndexList: PDWORD; IndexCount: DWORD);

 

procedure dxrCopyRectBlend(const Dest, Src: TDXR_Surface;

  const DestRect, SrcRect: TRect; Blend: TDXR_Blend; Alpha: Integer;

  ColorKeyEnable: Boolean; ColorKey: DWORD);

 

procedure dxrFillRectColorBlend(const Dest: TDXR_Surface;

  const DestRect: TRect; Blend: TDXR_Blend; Col: COLORREF);

 

procedure dxrDrawWaveXBlend(const Dest, Src: TDXR_Surface;

  X, Y, Width, Height: Integer; const SrcRect: TRect; amp, Len, ph: Integer;

  Blend: TDXR_Blend; Alpha: Integer;

  ColorKeyEnable: Boolean; ColorKey: DWORD);

 

procedure dxrDrawRotateBlend(const Dest, Src: TDXR_Surface;

  X, Y, Width, Height: Integer; const SrcRect: TRect; CenterX, CenterY: Double;

  Angle: Integer; Blend: TDXR_Blend; Alpha: Integer;

  ColorKeyEnable: Boolean; ColorKey: DWORD);

 

 

  TextureAxisFloatBit = 16;

  TextureAxisFloat = 1 shl TextureAxisFloatBit;

 

  ColorFloatBit = 8;

  ColorFloat = 1 shl ColorFloatBit;

               

 

  PInteger = ^Integer;

 

  {  TDXRMachine  }

 

  TDXRMachine_TreeType = (

    DXR_TREETYPE_LOADBLACK,      // Load black color

    DXR_TREETYPE_LOADCOLOR,      // Load vertex color

    DXR_TREETYPE_LOADCONSTCOLOR, // Load constant color

    DXR_TREETYPE_LOADTEXTURE,    // Load texel

    DXR_TREETYPE_LOADBUMPTEXTURE,// Load texel with Bump mapping

                                 //   dx := nx + (BumpTexture[nx-1, ny]-BumpTexture[nx+1, ny]);

                                 //   dy := ny + (BumpTexture[nx, ny-1]-BumpTexture[nx, ny+1]);

    DXR_TREETYPE_LOADDESTPIXEL,  // Load dest pixel

    DXR_TREETYPE_BLEND           // Blend color

  );

 

  TDXRColorChannel = (chRed, chGreen, chBlue, chAlpha);

  TDXRColorChannels = set of TDXRColorChannel;

 

  PDXRMachine_Color = ^TDXRMachine_Color;

  TDXRMachine_Color = packed record

    R, G, B, A: WORD;

  end;

 

  PDXRMachine_Axis = ^TDXRMachine_Axis;

  TDXRMachine_Axis = packed record

    X, Y: Integer;

  end;

 

  PDXRMachine_Int64 = ^TDXRMachine_Int64;

  TDXRMachine_Int64 = Comp;

 

  PDXRMachine_Reg_Color = ^TDXRMachine_Reg_Color;

  TDXRMachine_Reg_Color = record

    Enable: Boolean;

    nColor: TDXRMachine_Color;

    iColor: TDXRMachine_Color;

    Gouraud: Boolean;

    Channels: TDXRColorChannels;

  end;

 

  PDXRMachine_Reg_Texture = ^TDXRMachine_Reg_Texture;

  TDXRMachine_Reg_Texture = record

    Enable: Boolean;

    Surface: PDXR_Surface;

    nAxis: TDXRMachine_Axis;

    iAxis: TDXRMachine_Axis;

    iAxisConstant: Boolean;

    Filter: TDXR_TextureFilter;

    ColorKeyEnable: Boolean;

    ColorKey: TDXR_SurfaceColor;

    EnableChannels: TDXRColorChannels;

    TextureAddress: TDXR_TextureAddress;

    DefaultColor: TDXRMachine_Color;

  end;

 

  TDXRMachine_Reg_RHW = record

    Enable: Boolean;

    nRHW: TDXRMachine_Int64;

    iRHW: TDXRMachine_Int64;

  end;

 

  TDXRMachine_Reg_Dither = record

    Enable: Boolean;

  end;

 

  TDXRMachine_Reg_ZBuffer = record

    Enable: Boolean;

    Surface: PDXR_Surface;

    CmpFunc: TDXR_CmpFunc;

    WriteEnable: Boolean;

  end;

 

  TDXRMachine_Reg_Axis = record

    Axis: TDXRMachine_Axis;

    IncEnable: Boolean;

  end;

 

  PDXRMachine_Tree = ^TDXRMachine_Tree;

  TDXRMachine_Tree = record

    Typ: TDXRMachine_TreeType;

    Channels: TDXRColorChannels;

    case TDXRMachine_TreeType of

      DXR_TREETYPE_LOADBLACK: (

        );

      DXR_TREETYPE_LOADCOLOR: (

        Color: Integer

        );

      DXR_TREETYPE_LOADCONSTCOLOR: (

        ConstColor: TDXRMachine_Color;

        );

      DXR_TREETYPE_LOADTEXTURE: (

        Texture: Integer

        );

      DXR_TREETYPE_LOADBUMPTEXTURE: (

        _Texture: Integer;

        BumpTexture: Integer;

        );

      DXR_TREETYPE_LOADDESTPIXEL: (

        );

      DXR_TREETYPE_BLEND: (

        Blend: TDXR_Blend;

        BlendTree1: PDXRMachine_Tree;

        BlendTree2: PDXRMachine_Tree;

        );

  end;

 

  TDXRMachine = class

  private

    FBuf: Pointer;

    FCall: Pointer;

    FCompiled: Boolean;

    FTreeCount: Integer;

    FTreeList: array[0..127] of TDXRMachine_Tree;

    FMMXUsed: Boolean;

    F_ZBuf: Pointer;

    F_BiLinearAxis: TDXRMachine_Axis;

    F_BiLinearCol1: TDXRMachine_Color;

    F_BiLinearCol2: TDXRMachine_Color;

    F_BiLinearCol3: TDXRMachine_Color;

    F_BiLinearCol4: TDXRMachine_Color;

    F_BumpAxis: TDXRMachine_Axis;

    F_BumpAxis2: TDXRMachine_Axis;

    F_BumpTempCol: DWORD;

    FStack: array[0..255] of TDXRMachine_Color;

    procedure GenerateCode(var Code: Pointer; Tree: PDXRMachine_Tree);

  public

    Dest: PDXR_Surface;

    ColorList: array[0..7] of TDXRMachine_Reg_Color;

    ColorIndex: array[0..7] of Integer;

    ColorIndexCount: Integer;

    TextureList: array[0..7] of TDXRMachine_Reg_Texture;

    TextureIndex: array[0..7] of Integer;

    TextureIndexCount: Integer;

    Dither: TDXRMachine_Reg_Dither;

    ZBuffer: TDXRMachine_Reg_ZBuffer;

    Axis: TDXRMachine_Reg_Axis;

    RHW: TDXRMachine_Reg_RHW;

    constructor Create;

    destructor Destroy; override;

    function CreateTree: PDXRMachine_Tree; {$IFDEF VER9UP}inline;{$ENDIF}

    function CreateTree2(Typ: TDXRMachine_TreeType): PDXRMachine_Tree; {$IFDEF VER9UP}inline;{$ENDIF}

    function CreateTree_LoadColor(Color: DWORD): PDXRMachine_Tree; {$IFDEF VER9UP}inline;{$ENDIF}

    function CreateTree_LoadConstColor(R, G, B, A: Byte): PDXRMachine_Tree; {$IFDEF VER9UP}inline;{$ENDIF}

    function CreateTree_LoadTexture(Texture: DWORD): PDXRMachine_Tree; {$IFDEF VER9UP}inline;{$ENDIF}

    function CreateTree_LoadBumpTexture(Texture, BumpTexture: DWORD): PDXRMachine_Tree; {$IFDEF VER9UP}inline;{$ENDIF}

    function CreateTree_Blend(Blend: TDXR_Blend; BlendTree1, BlendTree2: PDXRMachine_Tree): PDXRMachine_Tree; {$IFDEF VER9UP}inline;{$ENDIF}

    procedure Initialize; {$IFDEF VER9UP}inline;{$ENDIF}

    procedure Compile(Tree: PDXRMachine_Tree);

    procedure Run(Count: Integer);

    property Compiled: Boolean read FCompiled write FCompiled;

  end;

 

  CPUIDF_FPU  = 1 shl 0;  {  Floating-point unit on-chip  }

  CPUIDF_VME  = 1 shl 1;  {  Virtual Mode Extension  }

  CPUIDF_DE   = 1 shl 2;  {  Debugging Extension  }

  CPUIDF_PSE  = 1 shl 3;  {  Page Size Extension  }

  CPUIDF_TSC  = 1 shl 4;  {  Time Stamp Counter  }

  CPUIDF_MSR  = 1 shl 5;  {  Mode Spacific Registers  }

  CPUIDF_PAE  = 1 shl 6;  {  Physical Address Extension  }

  CPUIDF_MCE  = 1 shl 7;  {  Machine Check Exception  }

  CPUIDF_CX8  = 1 shl 8;  {  CMPXCHG8 Instruction Supported  }

  CPUIDF_APIC = 1 shl 9;  {  On-chip APIC Hardware Supported }

  CPUIDF_MTRR = 1 shl 12; {  Memory Type Range Registers  }

  CPUIDF_PGE  = 1 shl 13; {  Page Global Enable  }

  CPUIDF_MCA  = 1 shl 14; {  Machine Check Architecture  }

  CPUIDF_CMOV = 1 shl 15; {  Conditional Move Instruction Supported  }

  CPUIDF_MMX  = 1 shl 23; {  Intel Architecture MMX Technology supported  }

 

  CPUIDVendor: array[0..11] of Char;

  CPUIDSignature: Integer;

  CPUIDFeatures: Integer;

  UseMMX: Boolean;

 

  RenderPrimitiveCount: Integer;

 

procedure ReadCPUID;

  asm

    push ebx

 

    pushfd

    pop eax

    mov ecx,eax

    xor eax,$200000

    push eax

    popfd

    pushfd

    pop eax

    xor eax,ecx

    jz @@exit

 

    mov eax,0

    db $0F,$A2                  ///cpuid

    cmp eax,1

    jl @@exit

 

    {  Vendor ID  }

    mov eax,0

    db $0F,$A2                  ///cpuid

    mov dword ptr [CPUIDVendor], ebx

    mov dword ptr [CPUIDVendor+4], edx

    mov dword ptr [CPUIDVendor+8], ecx

 

    {  Features, Signature  }

    mov eax,1

    db $0F,$A2                  ///cpuid

    mov CPUIDSignature,eax

    mov CPUIDFeatures,edx

  @@exit:

    pop ebx

  end;

  UseMMX := CPUIDFeatures and CPUIDF_MMX<>0;

 

function dxrGetOption(Option: TDXR_Option): DWORD;

  Result := 0;

  case Option of

    DXR_OPTION_VERSION:

        begin

          Result := 1*100 + 0;

        end;

    DXR_OPTION_MMXENABLE:

        begin

          Result := DWORD(LongBool(UseMMX));

        end;

    DXR_OPTION_RENDERPRIMITIVES:

        begin

          Result := RenderPrimitiveCount;

        end;

  end;

 

procedure dxrSetOption(Option: TDXR_Option; Value: DWORD);

  case Option of

    DXR_OPTION_MMXENABLE:

        begin

          UseMMX := LongBool(Value) and (CPUIDFeatures and CPUIDF_MMX<>0);

        end;

    DXR_OPTION_RENDERPRIMITIVES:

        begin

          RenderPrimitiveCount := Value;

        end;

  end;

 

function GetBitCount(B: Integer): DWORD;

  Result := 31;

  while (Result>0) and (((1 shl Result) and B)=0) do Dec(Result);

 

function GetFirstZeroBitCount(B: Integer): DWORD;

  Result := 0;

  while (Result<31) and (((1 shl Result) and B)=0) do Inc(Result);

 

function GetOneBitCount(B: Integer): DWORD;

  i: Integer;

  Result := 0;

  for i:=0 to 31 do

    Inc(Result, Ord(b and (1 shl i)<>0));

 

function dxrMakeColorChannel(Mask: DWORD; indexed: Boolean): TDXR_ColorChannel;

  i: Integer;

  Result.BitCount := GetOneBitCount(Mask shr (GetFirstZeroBitCount(Mask)));

  Result.Mask := Mask;

 

  if indexed then

  begin

    Result.rshift := GetFirstZeroBitCount(Mask);

    Result.lshift := 0;

  end else

  begin

    i :=  GetFirstZeroBitCount(Mask)-(8-Result.BitCount);

 

    if i<0 then

    begin

      Result.lshift := -i;

      Result.rshift := 0;

    end else

    begin

      Result.lshift := 0;

      Result.rshift := DWORD(i);

    end;

  end;

 

procedure dxrMakeIndexedSurface(var Surface: TDXR_Surface; Width, Height, BitCount: DWORD;

  Bits: Pointer; pitch: Integer; idx_index, idx_alpha: DWORD);

  FillChar(Surface, SizeOf(Surface), 0);

 

  Surface.ColorType := DXR_COLORTYPE_INDEXED;

  Surface.Width := Width;

  Surface.Height := Height;

  Surface.WidthBit := GetBitCount(Width);

  Surface.HeightBit := GetBitCount(Height);

  Surface.Width2 := 1 shl Surface.WidthBit;

  Surface.Height2 := 1 shl Surface.HeightBit;

  Surface.WidthMask := Surface.Width-1;

  Surface.HeightMask := Surface.Height2-1;

 

  Surface.BitCount := BitCount;

  Surface.Bits := Bits;

  Surface.Pitch := Pitch;

  Surface.PitchBit := GetBitCount(Abs(Pitch));

 

  Surface.idx_index := dxrMakeColorChannel(idx_index, True);

  Surface.idx_alpha := dxrMakeColorChannel(idx_alpha, False);

 

procedure dxrMakeRGBSurface(var Surface: TDXR_Surface; Width, Height, BitCount: DWORD;

  Bits: Pointer; pitch: Integer; rgb_red, rgb_green, rgb_blue, rgb_alpha: DWORD);

  FillChar(Surface, SizeOf(Surface), 0);

 

  Surface.ColorType := DXR_COLORTYPE_RGB;

  Surface.Width := Width;

  Surface.Height := Height;

  Surface.WidthBit := GetBitCount(Width);

  Surface.HeightBit := GetBitCount(Height);

  Surface.Width2 := 1 shl Surface.WidthBit;

  Surface.Height2 := 1 shl Surface.HeightBit;

  Surface.WidthMask := Surface.Width-1;

  Surface.HeightMask := Surface.Height2-1;

 

  Surface.BitCount := BitCount;

  Surface.Bits := Bits;

  Surface.Pitch := Pitch;

  Surface.PitchBit := GetBitCount(Abs(Pitch));

 

  Surface.rgb_red := dxrMakeColorChannel(rgb_red, False);

  Surface.rgb_green := dxrMakeColorChannel(rgb_green, False);

  Surface.rgb_blue := dxrMakeColorChannel(rgb_blue, False);

  Surface.rgb_alpha := dxrMakeColorChannel(rgb_alpha, False);

 

function dxrCompareSurface(const Surface1, Surface2: TDXR_Surface): Boolean;

  if Surface1.ColorType=DXR_COLORTYPE_INDEXED then

  begin

    Result := (Surface2.ColorType=DXR_COLORTYPE_INDEXED) and

      (Surface1.idx_index.Mask=Surface2.idx_index.Mask) and

      (Surface1.idx_alpha.Mask=Surface2.idx_alpha.Mask);

  end else if Surface1.ColorType=DXR_COLORTYPE_RGB then

  begin

    Result := (Surface2.ColorType=DXR_COLORTYPE_RGB) and

      (Surface1.rgb_red.Mask=Surface2.rgb_red.Mask) and

      (Surface1.rgb_green.Mask=Surface2.rgb_green.Mask) and

      (Surface1.rgb_blue.Mask=Surface2.rgb_blue.Mask) and

      (Surface1.rgb_alpha.Mask=Surface2.rgb_alpha.Mask);

  end else

    Result := False;

 

function dxrDDSurfaceLock(DDSurface: {$IFDEF D3D_deprecated}IDirectDrawSurface{$ELSE}IDirectDrawSurface7{$ENDIF}; var Surface: TDXR_Surface): Boolean;

  ddsd: {$IFDEF D3D_deprecated}TDDSurfaceDesc{$ELSE}TDDSurfaceDesc2{$ENDIF};

  Result := dxrDDSurfaceLock2(DDSurface, ddsd, Surface);

                                                                                   

function dxrDDSurfaceLock2(DDSurface: {$IFDEF D3D_deprecated}IDirectDrawSurface{$ELSE}IDirectDrawSurface7{$ENDIF}; var ddsd: {$IFDEF D3D_deprecated}TDDSurfaceDesc{$ELSE}TDDSurfaceDesc2{$ENDIF};

  var Surface: TDXR_Surface): Boolean;

  DDPF_PALETTEINDEXED = DDPF_PALETTEINDEXED1 or DDPF_PALETTEINDEXED2 or

    DDPF_PALETTEINDEXED4 or DDPF_PALETTEINDEXED8;

  ddsd.dwSize := SizeOf(ddsd);

  Result := DDSurface.Lock(nil, ddsd, DDLOCK_WAIT, 0)=DD_OK;

  if Result then

  begin

    FillChar(Surface, SizeOf(Surface), 0);

    if ddsd.ddpfPixelFormat.dwFlags and DDPF_PALETTEINDEXED<>0 then

    begin

      dxrMakeIndexedSurface(Surface, ddsd.dwWidth, ddsd.dwHeight, ddsd.ddpfPixelFormat.dwRGBBitCount,

        ddsd.lpSurface, ddsd.lPitch, (1 shl ddsd.ddpfPixelFormat.dwRGBBitCount)-1, 0);

    end else

    begin

      if ddsd.ddpfPixelFormat.dwFlags and DDPF_ALPHAPIXELS<>0 then

      begin

        dxrMakeRGBSurface(Surface, ddsd.dwWidth, ddsd.dwHeight, ddsd.ddpfPixelFormat.dwRGBBitCount,

          ddsd.lpSurface, ddsd.lPitch, ddsd.ddpfPixelFormat.dwRBitMask, ddsd.ddpfPixelFormat.dwGBitMask,

          ddsd.ddpfPixelFormat.dwBBitMask, ddsd.ddpfPixelFormat.dwRGBAlphaBitMask);

      end else

      begin

        dxrMakeRGBSurface(Surface, ddsd.dwWidth, ddsd.dwHeight, ddsd.ddpfPixelFormat.dwRGBBitCount,

          ddsd.lpSurface, ddsd.lPitch, ddsd.ddpfPixelFormat.dwRBitMask, ddsd.ddpfPixelFormat.dwGBitMask,

          ddsd.ddpfPixelFormat.dwBBitMask, 0);

      end;                          

    end;

  end;

 

procedure dxrDDSurfaceUnLock(DDSurface: {$IFDEF D3D_deprecated}IDirectDrawSurface{$ELSE}IDirectDrawSurface7{$ENDIF}; const Surface: TDXR_Surface);

  DDSurface.Unlock(Surface.Bits);

 

function dxrScanLine(const Surface: TDXR_Surface; y: DWORD): Pointer;

  Result := Pointer(Integer(Surface.Bits)+Surface.Pitch*Integer(y));

 

procedure dxrZBufferClear(const Surface: TDXR_Surface);

  i: Integer;

  for i:=0 to Surface.Height-1 do

    FillChar(dxrScanLine(Surface, i)^, Abs(Surface.Pitch), $FF);

 

 

constructor TDXRMachine.Create;

  inherited Create;

  FBuf := VirtualAlloc(nil, 2048, MEM_COMMIT, PAGE_EXECUTE_READWRITE);

 

destructor TDXRMachine.Destroy;

  VirtualFree(FBuf, 0, MEM_RELEASE);

  inherited Destroy;

 

procedure TDXRMachine.Initialize;

  FCall := nil;

  ColorIndexCount := 0;

  TextureIndexCount := 0;

 

  FTreeCount := 0;

 

  Dest := nil;

  FCompiled := False;

  FMMXUsed := False;

 

  FillChar(ColorList, SizeOf(ColorList), 0);

  FillChar(TextureList, SizeOf(TextureList), 0);

  FillChar(Dither, SizeOf(Dither), 0);

  FillChar(ZBuffer, SizeOf(ZBuffer), 0);

  FillChar(Axis, SizeOf(Axis), 0);

  FillChar(RHW, SizeOf(RHW), 0);

 

function TDXRMachine.CreateTree: PDXRMachine_Tree;

  Result := @FTreeList[FTreeCount];

  FillChar(Result^, SizeOf(Result^), 0);

  Inc(FTreeCount);

 

function TDXRMachine.CreateTree2(Typ: TDXRMachine_TreeType): PDXRMachine_Tree;

  Result := CreateTree;

  Result.Typ := Typ;

 

function TDXRMachine.CreateTree_LoadColor(Color: DWORD): PDXRMachine_Tree;

  Result := CreateTree;

  Result.Typ := DXR_TREETYPE_LOADCOLOR;

  Result.Color := Color;

 

function TDXRMachine.CreateTree_LoadConstColor(R, G, B, A: Byte): PDXRMachine_Tree;

  Result := CreateTree;

  Result.Typ := DXR_TREETYPE_LOADCONSTCOLOR;

  Result.ConstColor.R := R shl 8;

  Result.ConstColor.G := G shl 8;

  Result.ConstColor.B := B shl 8;

  Result.ConstColor.A := A shl 8;

 

function TDXRMachine.CreateTree_LoadTexture(Texture: DWORD): PDXRMachine_Tree;

  Result := CreateTree;

  Result.Typ := DXR_TREETYPE_LOADTEXTURE;

  Result.Texture := Texture;

 

function TDXRMachine.CreateTree_LoadBumpTexture(Texture, BumpTexture: DWORD): PDXRMachine_Tree;

  Result := CreateTree;

  Result.Typ := DXR_TREETYPE_LOADBUMPTEXTURE;

  Result.Texture := Texture;

  Result.BumpTexture := BumpTexture;

 

function TDXRMachine.CreateTree_Blend(Blend: TDXR_Blend; BlendTree1, BlendTree2: PDXRMachine_Tree): PDXRMachine_Tree;

  Result := CreateTree;

  Result.Typ := DXR_TREETYPE_BLEND;

  Result.Blend := Blend;

  Result.BlendTree1 := BlendTree1;

  Result.BlendTree2 := BlendTree2;

 

procedure TDXRMachine.Compile;

 

  function GetSurfaceChannels(const Surface: TDXR_Surface): TDXRColorChannels;

  begin

    Result := [];

 

    if Surface.ColorType=DXR_COLORTYPE_INDEXED then

    begin

      if Surface.idx_index.Mask<>0 then Result := Result + [chRed, chGreen, chBlue];

      if Surface.idx_alpha.Mask<>0 then Result := Result + [chAlpha];

    end else

    begin

      if Surface.rgb_red.Mask<>0 then Result := Result + [chRed];

      if Surface.rgb_green.Mask<>0 then Result := Result + [chGreen];

      if Surface.rgb_blue.Mask<>0 then Result := Result + [chBlue];

      if Surface.rgb_alpha.Mask<>0 then Result := Result + [chAlpha];

    end;

  end;

 

  procedure OptimizeTree(var Tree: PDXRMachine_Tree);

 

    procedure GetBlendChannels(Blend: TDXR_Blend; var Col1_1, Col1_2, Col2_1, Col2_2: TDXRColorChannels);

    begin

      case Blend of

        DXR_BLEND_ZERO:

          begin

            Col1_1 := [];

            Col1_2 := [];

            Col2_1 := [];

            Col2_2 := [];

          end;

        DXR_BLEND_ONE1:

          begin

            Col1_1 := [chRed, chGreen, chBlue, chAlpha];

            Col1_2 := [];

            Col2_1 := [];

            Col2_2 := [];

          end;

        DXR_BLEND_ONE2:

          begin

            Col1_1 := [];

            Col1_2 := [];

            Col2_1 := [chRed, chGreen, chBlue, chAlpha];

            Col2_2 := [];

          end;

        DXR_BLEND_ONE1_ADD_ONE2, DXR_BLEND_ONE1_SUB_ONE2:

          begin

            Col1_1 := [chRed, chGreen, chBlue, chAlpha];

            Col1_2 := [];

            Col2_1 := [chRed, chGreen, chBlue, chAlpha];

            Col2_2 := [];

          end;

        DXR_BLEND_ONE2_SUB_ONE1, DXR_BLEND_ONE1_MUL_ONE2:

          begin

            Col1_1 := [chRed, chGreen, chBlue, chAlpha];

            Col1_2 := [];

            Col2_1 := [chRed, chGreen, chBlue, chAlpha];

            Col2_2 := [];

          end;

        DXR_BLEND_SRCALPHA1:

          begin

            Col1_1 := [chRed, chGreen, chBlue];

            Col1_2 := [chAlpha];

            Col2_1 := [];

            Col2_2 := [];

          end;

        DXR_BLEND_SRCALPHA1_ADD_ONE2:

          begin

            Col1_1 := [chRed, chGreen, chBlue];

            Col1_2 := [chAlpha];

            Col2_1 := [chRed, chGreen, chBlue, chAlpha];

            Col2_2 := [];

          end;

        DXR_BLEND_ONE2_SUB_SRCALPHA1:

          begin

            Col1_1 := [chRed, chGreen, chBlue];

            Col1_2 := [chAlpha];

            Col2_1 := [chRed, chGreen, chBlue, chAlpha];

            Col2_2 := [];

          end;

        DXR_BLEND_SRCALPHA1_ADD_INVSRCALPHA2:

          begin

            Col1_1 := [chRed, chGreen, chBlue];

            Col1_2 := [chAlpha];

            Col2_1 := [chRed, chGreen, chBlue, chAlpha];

            Col2_2 := [];

          end;

        DXR_BLEND_INVSRCALPHA1_ADD_SRCALPHA2:

          begin

            Col1_1 := [chRed, chGreen, chBlue];

            Col1_2 := [chAlpha];

            Col2_1 := [chRed, chGreen, chBlue, chAlpha];

            Col2_2 := [];

          end;

 

        DXR_BLEND_DECAL:

          begin

            Col1_1 := [chRed, chGreen, chBlue, chAlpha];

            Col1_2 := [];

            Col2_1 := [];

            Col2_2 := [];

          end;

        DXR_BLEND_DECALALPHA:

          begin

            Col1_1 := [chRed, chGreen, chBlue];

            Col1_2 := [];

            Col2_1 := [];

            Col2_2 := [chAlpha];

          end;

        DXR_BLEND_MODULATE:

          begin

            Col1_1 := [chRed, chGreen, chBlue, chAlpha];

            Col1_2 := [];

            Col2_1 := [chRed, chGreen, chBlue, chAlpha];

            Col2_2 := [];

          end;

        DXR_BLEND_MODULATEALPHA:

          begin

            Col1_1 := [chRed, chGreen, chBlue];

            Col1_2 := [chAlpha];

            Col2_1 := [chRed, chGreen, chBlue];

            Col2_2 := [chAlpha];

          end;

        DXR_BLEND_ADD:

          begin

            Col1_1 := [chRed, chGreen, chBlue, chAlpha];

            Col1_2 := [];

            Col2_1 := [chRed, chGreen, chBlue, chAlpha];

            Col2_2 := [];

          end;

      end;

    end;

 

  var

    c: TDXRColorChannels;

    Col1_1, Col1_2, Col2_1, Col2_2: TDXRColorChannels;

  begin

    case Tree.Typ of

      DXR_TREETYPE_LOADBLACK:

          begin

            // Load black color

          end;

      DXR_TREETYPE_LOADCOLOR:

          begin

            // Load color

          end;

      DXR_TREETYPE_LOADTEXTURE:

          begin

            // Load texel

          end;

      DXR_TREETYPE_LOADBUMPTEXTURE:

          begin

            // Load texel with Bump mapping

          end;

      DXR_TREETYPE_LOADDESTPIXEL:

          begin

            // Load dest pixel

          end;

      DXR_TREETYPE_BLEND:

          begin

            // Blend color

            GetBlendChannels(Tree.Blend, Col1_1, Col1_2, Col2_1, Col2_2);

 

            Tree.BlendTree1.Channels := Tree.Channels*Col1_1+Col1_2;

            Tree.BlendTree2.Channels := Tree.Channels*Col2_1+Col2_2;

 

            OptimizeTree(Tree.BlendTree1);

            OptimizeTree(Tree.BlendTree2);

 

            if (Tree.Blend=DXR_BLEND_ZERO) then

            begin

              c := Tree.Channels; Tree^.Typ := DXR_TREETYPE_LOADBLACK; Tree.Channels := c;

            end else

            if (Tree.Blend in [DXR_BLEND_ONE1, DXR_BLEND_DECAL]) then

            begin

              c := Tree.Channels; Tree := Tree.BlendTree1; Tree.Channels := c;

            end else

            if (Tree.Blend=DXR_BLEND_ONE2) then

            begin

              c := Tree.Channels; Tree := Tree.BlendTree2; Tree.Channels := c;

            end else

            if (Tree.Blend in [DXR_BLEND_ONE1_ADD_ONE2, DXR_BLEND_ONE2_SUB_ONE1]) and

              (Tree.BlendTree2.Typ=DXR_TREETYPE_LOADBLACK) then

            begin

              c := Tree.Channels; Tree := Tree.BlendTree1; Tree.Channels := c;

            end else

            if (Tree.Blend in [DXR_BLEND_ONE1_ADD_ONE2, DXR_BLEND_ONE2_SUB_ONE1]) and

              (Tree.BlendTree1.Typ=DXR_TREETYPE_LOADBLACK) then

            begin

              c := Tree.Channels; Tree := Tree.BlendTree2; Tree.Channels := c;

            end else

            begin

              if (Col1_1=[]) and (Col1_2=[]) then Tree.BlendTree1 := nil;

              if (Col2_1=[]) and (Col2_2=[]) then Tree.BlendTree2 := nil;

            end;

          end;

    end;

  end;

 

  procedure GetEnableChannels(Tree: PDXRMachine_Tree);

  begin

    case Tree.Typ of

      DXR_TREETYPE_LOADBLACK:

          begin

            // Load black color

          end;

      DXR_TREETYPE_LOADCOLOR:

          begin

            // Load color

            ColorList[Tree.Color].Channels := ColorList[Tree.Color].Channels + Tree.Channels;

            ColorList[Tree.Color].Enable := ColorList[Tree.Color].Channels<>[];

          end;

      DXR_TREETYPE_LOADTEXTURE:

          begin

            // Load texel

            TextureList[Tree.Texture].EnableChannels := TextureList[Tree.Texture].EnableChannels +

              Tree.Channels*GetSurfaceChannels(TextureList[Tree.Texture].Surface^);

            TextureList[Tree.Texture].Enable := TextureList[Tree.Texture].EnableChannels<>[];

          end;

      DXR_TREETYPE_LOADBUMPTEXTURE:

          begin

            // Load texel with Bump mapping

            TextureList[Tree.Texture].EnableChannels := TextureList[Tree.Texture].EnableChannels +

              Tree.Channels*GetSurfaceChannels(TextureList[Tree.Texture].Surface^);

            TextureList[Tree.Texture].Enable := TextureList[Tree.Texture].EnableChannels<>[];

            TextureList[Tree.BumpTexture].Enable := True;

          end;

      DXR_TREETYPE_LOADDESTPIXEL:

          begin

            // Load dest pixel

          end;

      DXR_TREETYPE_BLEND:

          begin

            // Blend color

            if Tree.BlendTree1<>nil then GetEnableChannels(Tree.BlendTree1);

            if Tree.BlendTree2<>nil then GetEnableChannels(Tree.BlendTree2);

          end;

    end;

  end;

 

  Code: Pointer;

  i: Integer;

  {  Optimize tree  }

  Tree.Channels := GetSurfaceChannels(Dest^);

  OptimizeTree(Tree);

 

  {  Get enable channels  }

  GetEnableChannels(Tree);

 

  for i:=Low(ColorList) to High(ColorList) do

    if ColorList[i].Enable then

    begin

      ColorIndex[ColorIndexCount] := i;

      Inc(ColorIndexCount);

    end;

 

  for i:=Low(TextureList) to High(TextureList) do

    if TextureList[i].Enable then

    begin

      TextureIndex[TextureIndexCount] := i;

      Inc(TextureIndexCount);

    end;

 

  ZBuffer.Enable := ZBuffer.Surface<>nil;

 

  RHW.Enable := ZBuffer.Enable;

  Axis.IncEnable := Dither.Enable;

 

  {  Generate X86 code  }

  Code := FBuf; GenerateCode(Code, Tree);

 

  FCompiled := True;

 

  Mask1: array[0..7] of DWORD= ($80, $40, $20, $10, $08, $04, $02, $01);

  Mask2: array[0..3] of DWORD= ($C0, $30, $0C, $03);

  Mask4: array[0..1] of DWORD= ($F0, $0F);

 

  Shift1: array[0..7] of DWORD= (7, 6, 5, 4, 3, 2, 1, 0);

  Shift2: array[0..3] of DWORD= (6, 4, 2, 0);

  Shift4: array[0..1] of DWORD= (4, 0);

 

  _null: Byte;

 

  // Saturation addition table

  //   Result := Min(n+j, 255)

  _AddTable: array[0..256*2-1] of Byte;

  _SubTable: array[-255..255] of Byte;

 

  // Byte to QWORD convert table

  //   Result := (n shl 56)+(n shl 48)+(n shl 32)+(n shl 24)+(n shl 16)+(n shl 8)+n

  _ByteToQWORDTable: array[0..255, 0..3] of WORD;

 

  _BlackColor: TDXRMachine_Color = (R: 0; G: 0; B: 0; A: 0);

 

procedure Init;

  i: Integer;

  for i:=Low(_AddTable) to High(_AddTable) do

  begin

    if i>255 then

      _AddTable[i] := 255

    else

      _AddTable[i] := i;

  end;

 

  for i:=Low(_SubTable) to High(_SubTable) do

  begin

    if i<0 then

      _SubTable[i] := 0

    else

      _SubTable[i] := i;

  end;

 

  for i:=0 to 255 do

  begin

    _ByteToQWORDTable[i, 0] := i;

    _ByteToQWORDTable[i, 1] := i;

    _ByteToQWORDTable[i, 2] := i;

    _ByteToQWORDTable[i, 3] := i;

  end;

 

procedure TDXRMachine.GenerateCode(var Code: Pointer; Tree: PDXRMachine_Tree);

  SkipAddress: Pointer;

 

  procedure genCmpFunc(var Code: Pointer; Func: TDXR_CmpFunc; JmpAdress: Pointer);

 

    procedure genShortJmp(var Code: Pointer; JmpCode: Pointer; sC: Byte);

    type

      PShortJmp = ^TShortJmp;

      TShortJmp = packed record

        c: Byte;

        A: ShortInt;

      end;

    begin

      with PShortJmp(Code)^ do

      begin

        c := sC;

        A := Integer(JmpCode)-(Integer(Code)+2);

      end;

      Inc(Integer(Code), 2);

    end;

 

    procedure genNearJmp(var Code: Pointer; JmpCode: Pointer; nC: Byte);

    type

      PNearJmp = ^TNearJmp;

      TNearJmp = packed record

        c: Byte;

        A: Integer;

      end;

    begin

      with PNearJmp(Code)^ do

      begin

        c := nC;

        A := Integer(JmpCode)-(Integer(Code)+5);

      end;

      Inc(Integer(Code), 5);

    end;

 

    procedure genNearJmp2(var Code: Pointer; JmpCode: Pointer; nC1, nC2: Byte);

    type

      PNearJmp2 = ^TNearJmp2;

      TNearJmp2 = packed record

        c1, c2: Byte;

        A: Integer;

      end;

    begin

      with PNearJmp2(Code)^ do

      begin

        c1 := nC1;

        c2 := nC2;

        A := Integer(JmpCode)-(Integer(Code)+6);

      end;

      Inc(Integer(Code), 6);

    end;

 

    procedure genFlagJmp(var Code: Pointer; JmpCode: Pointer; sC, nC1, nC2: Byte);

    var

      i: Integer;

    begin

      i := Integer(JmpCode)-(Integer(Code)+2);

      if abs(i)<128 then

        genShortJmp(Code, JmpCode, sC)

      else

        genNearJmp2(Code, JmpCode, nC1, nC2);

    end;

 

    procedure genJmp(var Code: Pointer; JmpCode: Pointer);

    var

      i: Integer;

    begin

      i := Integer(JmpCode)-(Integer(Code)+2);

      if abs(i)<128 then

        genShortJmp(Code, JmpCode, $EB)

      else

        genNearJmp(Code, JmpCode, $E9);

    end;

 

  begin

    case Func of

      DXR_CMPFUNC_NEVER:

          begin

            {  if (False) then Jump }

          end;

      DXR_CMPFUNC_LESS:

          begin

            {  if (New<Old) then Jump  }

            genFlagJmp(Code, JmpAdress, $7C, $0F, $8C);

          end;

      DXR_CMPFUNC_EQUAL:

          begin

            {  if (New=Old) then Jump  }

            genFlagJmp(Code, JmpAdress, $74, $0F, $84);

          end;

      DXR_CMPFUNC_LESSEQUAL:

          begin

            {  if (New<=Old) then Jump  }

            genFlagJmp(Code, JmpAdress, $7E, $0F, $8E);

          end;

      DXR_CMPFUNC_GREATER:

          begin

            {  if (New>Old) then Jump  }

            genFlagJmp(Code, JmpAdress, $7F, $0F, $8F);

          end;

      DXR_CMPFUNC_NOTEQUAL:

          begin

            {  if (New<>Old) then Jump  }

            genFlagJmp(Code, JmpAdress, $75, $0F, $85);

          end;

      DXR_CMPFUNC_GREATEREQUAL:

          begin

            {  if (New>=Old) then Jump  }

            genFlagJmp(Code, JmpAdress, $7D, $0F, $8D);

          end;

      DXR_CMPFUNC_ALWAYS:

          begin

            {  if (True) then Break }

            genJmp(Code, JmpAdress);

          end;

    end;

  end;

 

  procedure genInitDestAddress(var Code: Pointer);

  var

    _Axis: Pointer;

    ByteCount, Pitch: DWORD;

    Bits: Pointer;

  begin

    _Axis := @Axis.Axis;

 

    ByteCount := Dest.BitCount shr 3;

    Pitch := Dest.pitch;

    Bits := Dest.Bits;

 

    asm

      jmp @@EndCode

    @@StartCode:

      mov eax,dword ptr [offset _null]{}@@AxisX:

      imul eax,$11{}        @@ByteCount: // Dest.BitCount div 8

      mov edi,dword ptr [offset _null]{}@@AxisY:

      imul edi,$11111111{}  @@Pitch: // Dest.pitch

      add edi,$11111111{}   @@Bits:  // Dest.Bits

      add edi,eax

    @@EndCode:

      {$I DXRender.inc}

      {  @@AxisX  }

      mov eax,_Axis; add eax,TDXRMachine_Axis.X

      mov edx,offset @@AxisX-4

      sub edx,offset @@StartCode

      mov dword ptr [ecx+edx],eax

 

      {  @@AxisY  }

      mov eax,_Axis; add eax,TDXRMachine_Axis.Y

      mov edx,offset @@AxisY-4

      sub edx,offset @@StartCode

      mov dword ptr [ecx+edx],eax

 

      {  @@ByteCount  }

      mov eax,ByteCount

      mov edx,offset @@ByteCount-1

      sub edx,offset @@StartCode

      mov byte ptr [ecx+edx],al

 

      {  @@Pitch  }

      mov eax,Pitch

      mov edx,offset @@Pitch-4

      sub edx,offset @@StartCode

      mov dword ptr [ecx+edx],eax

 

      {  @@Bits  }

      mov eax,Bits

      mov edx,offset @@Bits-4

      sub edx,offset @@StartCode

      mov dword ptr [ecx+edx],eax

    end;

  end;

 

  procedure genInitZBuffer(var Code: Pointer);

  var

    _Axis: Pointer;

    ByteCount, Pitch: DWORD;

    Bits, _ZBuf: Pointer;

  begin

    if not ZBuffer.Enable then Exit;

 

    _Axis := @Axis.Axis;

 

    ByteCount := ZBuffer.Surface.BitCount div 8;

    Pitch := ZBuffer.Surface.Pitch;

    Bits := ZBuffer.Surface.Bits;

 

    _ZBuf := @F_ZBuf;

 

    asm

      jmp @@EndCode

    @@StartCode:

      mov edx,dword ptr [offset _null]{}@@AxisX:

      imul edx,$11{}        @@ByteCount: // States.ZBuffer.BitCount div 8

      mov eax,dword ptr [offset _null]{}@@AxisY:

      imul eax,$11111111{}  @@Pitch: // States.ZBuffer.pitch

      add eax,$11111111{}   @@Bits:  // States.ZBuffer.Bits

      add eax,edx

      mov dword ptr [offset _null],eax{}@@_ZBuf:

    @@EndCode:

      {$I DXRender.inc}

      {  @@AxisX  }

      mov eax,_Axis; add eax,TDXRMachine_Axis.X

      mov edx,offset @@AxisX-4

      sub edx,offset @@StartCode

      mov dword ptr [ecx+edx],eax

 

      {  @@AxisY  }

      mov eax,_Axis; add eax,TDXRMachine_Axis.Y

      mov edx,offset @@AxisY-4

      sub edx,offset @@StartCode

      mov dword ptr [ecx+edx],eax

 

      {  @@ByteCount  }

      mov eax,ByteCount

      mov edx,offset @@ByteCount-1

      sub edx,offset @@StartCode

      mov byte ptr [ecx+edx],al

 

      {  @@Pitch  }

      mov eax,Pitch

      mov edx,offset @@Pitch-4

      sub edx,offset @@StartCode

      mov dword ptr [ecx+edx],eax

 

      {  @@Bits  }

      mov eax,Bits

      mov edx,offset @@Bits-4

      sub edx,offset @@StartCode

      mov dword ptr [ecx+edx],eax

 

      {  @@_ZBuf  }

      mov eax,_ZBuf

      mov edx,offset @@_ZBuf-4

      sub edx,offset @@StartCode

      mov dword ptr [ecx+edx],eax

    end;

  end;

 

  procedure genZBufferTest(var Code: Pointer);

  var

    _ZBuf, _RHW: Pointer;

  begin

    if not ZBuffer.Enable then Exit;

 

    _ZBuf := @F_ZBuf;

    _RHW := @RHW.nRHW;

 

    asm

      jmp @@EndCode

    @@StartCode:

      mov edx,dword ptr [offset _null]{}@@_ZBuf:

      mov ebx,dword ptr [offset _null]{}@@_RHW:

    @@EndCode:

      {$I DXRender.inc}

      {  @@_ZBuf  }

      mov eax,_ZBuf

      mov edx,offset @@_ZBuf-4

      sub edx,offset @@StartCode

      mov dword ptr [ecx+edx],eax

 

      {  @@_RHW  }

      mov eax,_RHW; add eax,4

      mov edx,offset @@_RHW-4

      sub edx,offset @@StartCode

      mov dword ptr [ecx+edx],eax

    end;

 

    if ZBuffer.CmpFunc<>DXR_CMPFUNC_ALWAYS then

    begin

      case ZBuffer.Surface.BitCount of

        8: begin

             asm

               jmp @@EndCode

             @@StartCode:

               movzx eax,byte ptr [edx]

             @@EndCode:

               {$I DXRender.inc}

             end;

           end;

       16: begin

             asm

               jmp @@EndCode

             @@StartCode:

               movzx eax,word ptr [edx]

             @@EndCode:

               {$I DXRender.inc}

             end;

           end;

       24: begin

             asm

               jmp @@EndCode

             @@StartCode:

               movzx ax,byte ptr [edx+2]

               shl eax,16

               mov ax,word ptr [edx]

             @@EndCode:

               {$I DXRender.inc}

             end;

           end;

       32: begin

             asm

               jmp @@EndCode

             @@StartCode:

               mov eax,dword ptr [edx]

             @@EndCode:

               {$I DXRender.inc}