[HELP] C++ trying to get overlay in game by hooking endscene

[barrn]

Hey guys, I don't really know where to post this, but browsing the wow section shows that many of you guys are experts at this and I really need some help here. Ive been stuck on this too long.

I'm trying to hook endscene in d3d9 so that I can write things to the screen.

Code :

void EndSceneVtab()
{
    
    HMODULE dx = NULL;

    while (!dx)
    {
        
        dx = GetModuleHandle(L"d3d9.dll");
        Sleep(100);
    }
    VtableStart = 0;
    DWORD vtableLookUp = dwFindPattern((DWORD)dx, 0x128000, (PBYTE)"\xC7\x06\x00\x00\x00\x00\x89\x86\x00\x00\x00\x00\x89\x86", "xx????xx????xx");

    VtableStart = (DWORD*)*(DWORD*)(vtableLookUp + 2);
    EndScene = VtableStart[ENDSCENE_VTAB];

    MEMORY_BASIC_INFORMATION mbi;
    VirtualQuery((LPCVOID)VtableStart, &mbi, sizeof(mbi));
    VirtualProtect(mbi.BaseAddress, mbi.RegionSize, PAGE_EXECUTE_READWRITE, &mbi.Protect);


    VtableStart[ENDSCENE_VTAB] = (DWORD)HookDraw;

    VirtualProtect(mbi.BaseAddress, mbi.RegionSize, mbi.Protect, &mbi.Protect);



}


void __fastcall HookDraw(IDirect3DDevice9 * This)
{

    if (This)
    {
        DrawLine(52.0, 41.0, 52.0, 52.0, 50, 50, 50, 50, This);
        __asm {
            jmp[EndScene]
        }
    }
}

void DrawLine(float x, float y, float xx, float yy, int r, int g, int b, int a, IDirect3DDevice9 * device)
{

    if (!p_Line)
    {
        D3DXCreateLine(device, &p_Line);
    }

    if (p_Line)
    {
        D3DXVECTOR2 projmatrix[2];
        p_Line->SetWidth(1);
        projmatrix[0].x = x;
        projmatrix[0].y = y;
        projmatrix[1].x = xx;
        projmatrix[1].y = yy;
        p_Line->Draw(projmatrix, 2, txt);
    }

} 

The problem :

The pointer in the vtable is patched, but there is no drawing taking place. Can someone please help me out here.