void __usercall LoadModel(double a1@<st0>, GliTexture *model_, void *Dst, int a4)
{
  GliTexture *model; // esi@1
  int v5; // eax@6
  void *v6; // edi@7
  char v7; // al@10
  char v8; // al@12
  unsigned __int16 v9; // dx@17
  char v10; // al@18
  char v11; // al@19
  unsigned __int16 v12; // dx@20
  int v13; // eax@23
  size_t v14; // eax@24
  unsigned __int16 v15; // bx@25
  int v16; // eax@25
  int v17; // ecx@25
  unsigned __int16 v18; // bp@27
  int j; // ecx@28
  unsigned __int16 v20; // bp@31
  unsigned __int16 v21; // bp@36
  int i; // ecx@37
  unsigned __int16 v23; // bp@40
  int v24; // eax@44
  int v25; // [sp-4h] [bp-14h]@48
  GliTexture *model_a; // [sp+14h] [bp+4h]@6
  void *Dsta; // [sp+18h] [bp+8h]@32
  void *Dstb; // [sp+18h] [bp+8h]@41
  int v29; // [sp+1Ch] [bp+Ch]@6

  model = model_;
  if ( model_ )
  {
    ++dword_502660;
    if ( !a4 && Get_SNA_PTX_Something() != 1 && !(dword_502660 % 0x14u) )
      sub_45F7E0(a1, 1);
    v29 = model_->word18;
    v5 = model_->dword14;
    model_a = model_->word1A;
    if ( v5 & 0x80000000 )
    {
      v6 = Dst;
      LoadModelWithTexture(model, model->textureFilename, Dst);
    }
    else
    {
      if ( !(v5 & 0x40000000) )
        return;
      v6 = Dst;
      sub_426320(model, model->textureFilename, Dst);
    }
    model->word18 = v29;
    v7 = model->byte45;
    model->dword8 = v6;
    model->word1A = model_a;
    if ( v7 & 0x10 )
      model->byte45 = v7 | 0xC;
    v8 = model->byte45;
    if ( v8 & 0xC && !(byte_503688 & 8) )
    {
      if ( v8 & 4 )
      {
        if ( v8 & 0x10 )
          model->byte45 = v8 & 0xFB;
        v9 = model->word1C;
        model->byte45 |= 1u;
        sub_425F40(v6, model->word1E, v9);
        model->word1E *= 2;
      }
      v10 = model->byte45;
      if ( v10 & 8 )
      {
        v11 = v10 | 2;
        model->byte45 = v11;
        if ( v11 & 0x10 )
        {
          v12 = model->word1C;
          model->byte45 = v11 & 0xF7;
          sub_426000(v6, model->word1E, v12);
        }
        else
        {
          sub_425FA0(v6, model->word1E, model->word1C);
        }
        model->word1C *= 2;
      }
    }
    v13 = model->dword14;
    if ( BYTE1(v13) & 4 )
    {
      model->word1C >>= 1;
      v14 = 4 * model->word1C * model->word1E;
      memmove(v6, v6 + v14, v14);
    }
    v15 = model->word1C;
    LOWORD(v16) = model->word1E;
    v17 = model->dword14;
    if ( !(v17 & 2) || v17 & 8 )
    {
      v21 = model->word1E;
      if ( v16 > model->word1A )
      {
        for ( i = v15; ; i = v15 )
        {
          sub_425A90(v6, v6, i, v16);
          v21 >>= 1;
          LOWORD(v16) = v21;
          if ( v21 <= model->word1A )
            break;
        }
      }
      v23 = v15;
      if ( v15 > model->word18 )
      {
        v16 = v16;
        for ( Dstb = v16; ; v16 = Dstb )
        {
          sub_425AE0(v6, v6, v15, v16);
          v23 >>= 1;
          if ( v23 <= model->word18 )
            break;
          v15 = v23;
        }
      }
    }
    else
    {
      v18 = model->word1E;
      if ( v16 > model->word1A )
      {
        for ( j = v15; ; j = v15 )
        {
          sub_425B50(v6, v6, j, v16, model->dword2C);
          v18 >>= 1;
          LOWORD(v16) = v18;
          if ( v18 <= model->word1A )
            break;
        }
      }
      v20 = v15;
      if ( v15 > model->word18 )
      {
        v16 = v16;
        for ( Dsta = v16; ; v16 = Dsta )
        {
          sub_425BE0(v6, v6, v15, v16, model->dword2C);
          v20 >>= 1;
          if ( v20 <= model->word18 )
            break;
          v15 = v20;
        }
      }
    }
    v24 = model->dword14;
    if ( v24 & 0x902 )
    {
      if ( dword_503684 & 0x10 )
      {
        if ( v24 & 0x808 )
        {
          model->dword14 = v24 & 0xFFFFFFE5 | 0x900;
        }
        else
        {
          v25 = model->dword2C;
          if ( v24 & 0x10 )
            sub_4254B0(v6, model->word1A, model->word18, v25);
          else
            sub_425200(v6, model->word1A, model->word18, v25);
          model->dword14 = model->dword14 & 0xFFFFFFED | 0x100;
        }
      }
      else if ( v24 & 0x808 )
      {
        sub_4251C0(v6, model->word1E, model->word1C, model->dword2C);
        model->dword14 = model->dword14 & 0xFFFFFFE7 | 0x800;
      }
      else if ( v24 & 0x10 )
      {
        sub_425240(model, v6);
      }
    }
  }
}