Re: [d3d8] Fix CreateImageSurface implementation (with testcase)

[H. Verbeet]

2008/6/20 Tobias Jakobi :
> Patch fixes a problem with the IDirect3DDevice8::CreateImageSurface
> implementation (wrong pool type of the returned surface object). This fixes
> savegame screenshot bugs (black images instead of game scenes) in both Max
> Payne and Max Payne 2.
>
> Affected bugs:
> http://bugs.winehq.org/show_bug.cgi?id=9775
> http://bugs.winehq.org/show_bug.cgi?id=7801
>
> Test case is included and verifies behaviour on both Windows XP and Vista.
> This is my first patch for wine and also my first post on the wine-patches
> ml, so if I'm doing anything wrong here please tell me and I try to do
> better next time :-)
>
> Greets,
> Tobias Jakobi

The change itself looks ok to me, provided the test passes on XP.
Don't mix tabs and spaces though:
> - /*
> - D3DPOOL_DEFAULT = 0
> - D3DPOOL_MANAGED = 1
> - D3DPOOL_SYSTEMMEM = 2
> - D3DPOOL_SCRATCH = 3
> - */

I'm not sure this adds much (not that the original comment did either):
> -
>    /*MSDN: D3DPOOL_SCRATCH will return a surface that has identical characteristics to a surface created by the Microsoft DirectX 8.x method CreateImageSurface.
> -
>    /*MSDN: D3DPOOL_SCRATCH will return a surface that has identical characteristics to a surface created by the Microsoft DirectX 8.x method CreateImageSurface (quote from the DirectX9 documentation).
> -
>    However this is wrong behaviour and conflicting with the explanation from the original DirectX8 documentation. According to DX8 docs it should be D3DPOOL_SYSTEMMEM and NOT D3DPOOL_SCRATCH.
> -
>    For a testcase of the DX8 CreateImageSurface method look for test_image_surface_pool in dlls/d3d8/tests/surface.c

It would probably be better to just describe the behaviour of
D3DPOOL_SCRATCH there.