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Maverick89

Delphi/D3D9: D3DXLoadSurfaceFromFile fails

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     ***
var sBackBuffer, sLoadScreen: IDirect3DSurface9;
    pDestLoadscreen: pRECT;
    res: HRESULT;
    path: string;

     ***
  res := d3dmgr.pD3DDevice.CreateOffscreenPlainSurface(1024, 768, D3DFMT_X8R8G8B8, D3DPOOL_DEFAULT, sloadscreen, nil);
  if failed(res) then logfile.MessOut('pD3DDevice.CreateOffscreenPlainSurface failed');

  path := apppath+'data\loadscreen.bmp';
  res := D3DXLoadSurfaceFromFile(sLoadScreen, nil, nil, @path, nil, D3DX_DEFAULT, 0, nil);
  if res=D3D_OK then begin
    pdestloadscreen.Left := 0;
    pdestloadscreen.Top := 0;
    pdestloadscreen.Right := 0;
    pdestloadscreen.Bottom := 0;
    d3dmgr.pD3DDevice.StretchRect(sLoadScreen, nil, sBackBuffer, pdestloadscreen, D3DTEXF_NONE);
    res := d3dmgr.pD3DDevice.Present(nil, nil, 0, nil);
    if failed(res) then
      logfile.MessOut('Loadscreen present failed');
  end else case res of
    D3DERR_INVALIDCALL: logfile.MessOut('Cant load loadscreen-image: D3DERR_INVALIDCALL');
    D3DXERR_INVALIDDATA: logfile.MessOut('Cant load loadscreen-image: D3DERR_INVALIDDATA');
  end;
I become D3DERR_INVALIDDATA in the log file. What's wrong in the code? Thanks [Edited by - Maverick89 on June 19, 2005 4:34:40 AM]

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It seems like D3DXLoadSurfaceFromFile has problems recognizing the data in the file you specified. Check the following:

- Is the path expressed correctly?
- Does the image file exist at the specified location?
- Is the image file valid/nondamaged?

I'm not very familiar with delphi but as far as I can see your code seems fine. In C/C++ you have to use double backslash characters (\\) in paths. I don't know if this goes for delphi too.

Stay sharp.

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I used debugger to save the variable's value into event log, then copied this value in explorer - it showed the image, so looks like the path is right.
I used fotoshop to convert the image between jpg and bmp - both were not working.


So, I'm now unsure if i transfer the value of "path" correctly: i give a pointer to a string to the LPCTSTR value. The question is, if the pascal-formated string is comaptible.

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