[Morfik]

во те рабочий ДХ пример
Оффтоп

library dxtext;

uses
  SysUtils,
  Classes,
  Windows,
  Direct3D9,
  D3DX9;

type
  PDWORD=^DWORD;


var
  D3DObj: IDirect3D9;
  D3DDev: IDirect3DDevice9;
  
  g_Font: ID3DXFont;
  
  adr_Direct3DCreate9:DWORD;
  adr_CreateDevice9:DWORD;
  adr_EndScene9:DWORD;

function HookCode(target:pointer;new_adr,TrueAdr:PDWORD):BOOL;
var
  op:DWORD;
begin
  result:=false;
  if ((VirtualProtect(target,5,PAGE_EXECUTE_READWRITE,@op)) and (DWORD(target)>0)) then
  begin
    BYTE(target^):=$E9;
    DWORD(Pointer(DWORD(target)+1)^):=DWORD(new_adr) - DWORD(target) - DWORD(5);
    TrueAdr^:=DWORD(target)+5;
    result:=true;
  end;
end;

function GetInterfaceMethod(const intf; methodIndex: dword) : pointer;
begin
  result := pointer(pointer(dword(pointer(intf)^) + methodIndex * 4)^);
end;


function EndScene9Next(self: pointer): HResult;stdcall;
begin  asm     jmp [adr_EndScene9]     end;  end;

function CreateDevice9Next(self: Pointer; Adapter: LongWord; DeviceType: TD3DDevType; hFocusWindow: HWND; BehaviorFlags: DWord; pPresentationParameters: PD3DPresentParameters; out ppReturnedDeviceInterface: IDirect3DDevice9) : HRESULT;stdcall;
begin  asm     jmp [adr_CreateDevice9]     end;  end;

function Direct3DCreate9Next(SDKVersion: LongWord): DWORD;stdcall;
begin  asm     jmp [adr_Direct3DCreate9]     end;  end;


//РИСУЕМ ТУТ
function EndScene9Callback(self: pointer): HResult; stdcall;
var
  TextRect: TRect;
begin
  //мы все еще между begin и endscene, знач рисуем
  TextRect := Rect(100,100,100,100);
  g_Font.DrawTextA(nil,PChar('Хеллоу ворлд!!!'),-1,@TextRect,DT_LEFT or DT_NOCLIP,D3DCOLOR_RGBA($ff, $00, $00, $ff));

  //а вот теперь вызоверем оригинальную endscene
  Result:=EndScene9Next(self);
end;
//конец того где рисуем


function CreateDevice9Callback(self: pointer; Adapter: LongWord; DeviceType: TD3DDevType; hFocusWindow: HWND; BehaviorFlags: DWord; pPresentationParameters: PD3DPresentParameters; out ppReturnedDeviceInterface: IDirect3DDevice9) : HRESULT; stdcall;
var
  A: Integer;
begin
  result := CreateDevice9Next(self, adapter, DeviceType, hFocusWindow, BehaviorFlags, pPresentationParameters, ppReturnedDeviceInterface);
  D3DDev := ppReturnedDeviceInterface;
  if (result = 0) then
  begin
    A := D3DXCreateFont(
      D3DDev, 14, 0, FW_NORMAL, 1,
      false, DEFAULT_CHARSET,
      OUT_DEFAULT_PRECIS,
      DEFAULT_QUALITY,
      DEFAULT_PITCH or FF_DONTCARE,
      PChar('Arial'),
      g_Font
    );

    HookCode(GetInterfaceMethod(ppReturnedDeviceInterface{^}, 42), @EndScene9Callback, @adr_EndScene9);
  end;
end;

function Direct3DCreate9Callback(SDKVersion: LongWord): DWORD; stdcall;
var
  F: TStrings;
begin
  Result:=Direct3DCreate9Next(SDKVersion);
  D3DObj := IDirect3D9(Result);
  if (Result <> 0) then
  begin
    HookCode(GetInterfaceMethod(result, 16), @CreateDevice9Callback, @adr_CreateDevice9);
  end;
end;

begin
    HookCode(GetProcAddress(LoadLibraryA('d3d9.dll'),'Direct3DCreate9'), @Direct3DCreate9Callback, @adr_Direct3DCreate9)
end.