test {IDirect3DTexture8,IDirect3DSurface8}::UnlockRect for rectangles that are not locked

[Louis Lenders]

Stefan Dösinger <stefan <at> codeweavers.com> writes:
> Do I read this correctly that a double unlockrect call on a surface  
> fails, while a double unlockrect call on a texture succeeds?

Yes

Here are some more test suggestions:

-> Create a texture, retrieve its surface, and call LockRect/ 
UnlockRect on the surface. Does this show the surface or texture  
behavior

-> What happens if you have a texture, retrieve a surface and mix  
locks on the surface and texture?

I'll see if I can fix something together later on this week

-> What is the d3d9 behavior?

Test follows, was about to send