We will need this for d3d10, where both dxgi and d3d10core are making wined3d
calls. Right now d3d8/d3d9 also use this to protect their own data, but
eventually we should push this down into wined3d itself and use something a
bit more fine-grained. There's no good reason that doing e.g. a vertex buffer
upload in some thread should block all of wined3d.
Other than being a bit nicer than passing function pointers all over the
place, this helps dxgi/d3d10. While the swapchain itself is created in dxgi,
its surfaces are constructed in d3d10core, which makes it impractical for dxgi
to pass the appropriate function pointers.
QueryInterface should return S_OK on success and set the object
pointer to NULL on failure. This is similar to the patch Ivan
submitted a while ago for wined3d.
surface.c/*texture.c (with add of lockable, locked and Dirty flags)
- add of dirtyRect/dirtyBox for better dirtification management (not
used yet, but huge optimisation can be possible now)
- fix some debug traces (well it's better to use debug_d3dpool)
- fix some stupid regression on point parameters (forgot to check
extension on fillcaps)
- minor indentation and traces fixes
- fix locking/unlocking/dirty behavior (dirtify on lock) +
optimisations (only copy when dirty)
- fix IDirect3DDevice8::Clear behavior (problem seen after a
locking/unlocking code error)
- begin to fix volume and cube textures management
- minor indentation changes
- fix SELECTARG2 behavior (with help from Lionel Ulmer)
- surface locking/unlocking (only rendering and textures surfaces
supported now)
- beginning of Target/Front surface support
- try to get D3DTOP_SELECTARG_* working
- implemented D3DTOP_SUBTRACT: currently only if OpenGL1.3 is used, we
have to use GL_SUBTRACT_ARB for other versions
- beginning of shaders support (Vertex and Pixel Shaders 1.1 on
DirectX8)
- beginning of D3DX8 support the D3D8 utility API (very basic, only
the core header)
