Allocates a buffer and copies the fragment data into it.
HRESULT GetAllFragments( LPD3DXBUFFER* ppBuffer );
If the method succeeds, the return value is D3D_OK. If the method fails, the return value can be one of the following: D3DERR_INVALIDCALL, E_OUTOFMEMORY.
Header: Declared in D3dx9shader.h.