The last of the saving patches for d3dx9. :)
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v3: d3dx9: Add support for saving IDirect3DVolumeTexture9 textures to DDS files in D3DXSaveTextureToFileInMemory().
d3dx9: Add support for saving IDirect3DCubeTexture9 textures to DDS files in D3DXSaveTextureToFileInMemory().
d3dx9: Add support for saving IDirect3DTexture9 textures to DDS files in D3DXSaveTextureToFileInMemory().
d3dx9/tests: Add more tests for saving textures to DDS files.
https://gitlab.winehq.org/wine/wine/-/merge_requests/7636