Re: GSoC-2011: Implement Missing Mesh Functions in Wine’s D3DX9

[Michael Mc Donnell]

I have added more tests and changed the UpdateSemantics implementation
quite a bit. Dylan Smith made me aware that GetNumBytesPerVertex and
GetDeclaration work with an invalid declaration, so I've added tests
for that and changed the implementation to do the same.

I cache the vertex declaration (D3DVERTEXELEMENT9 array) and the size
of the vertex declaration, so that they can be used by
GetNumBytesPerVertex and GetDeclaration when an invalid declaration
has been passed.

Any comments?