-- v3: d3dx9: Validate filter argument in texture from file functions. d3dx9: Validate filter argument in D3DXLoadSurfaceFrom{Surface,FileInMemory,Memory}(). d3dx9: Validate filter argument in D3DXLoadVolumeFrom{Volume,FileInMemory,Memory}(). d3dx9: Further validate filter argument passed to D3DXFilterTexture(). d3dx9: Introduce helper function for retrieving the mip filter value in texture from file functions. d3dx9/tests: Add d3dx filter argument value tests. d3dx9: Return failure from D3DXLoadSurfaceFromMemory() if d3dx_load_pixels_from_pixels() fails. d3dx9: Return success in D3DXLoadSurfaceFromMemory() for multisampled destination surfaces. d3dx9/tests: Add tests for D3DXLoadSurfaceFromMemory() with a multisampled surface.