Exception Handling with a "bad" ESP

[Felix Nawothnig]

Glenn Wurster wrote:
> Comments?  Suggestions?

Our current DIB implementation is an ugly hack. We need a real DIB 
implementation, either as a complete GDI engine in Wine or as an X11 
extension.

Some work has been done on a GDI engine in Wine by Transgaming a couple 
of years ago but it wasn't merged. Then, some weeks ago someone 
suggested to port the ReactOS GDI engine to Wine.

However, in my opinion implementing a full-fledged GDI engine in Wine 
would be rather hackish and sub-optimal for several reasons:

  - It would need a lot of code and a lot of work.
  - The X11 engine is captable enough for most of our purposes (except
    this DIB thingie) so we shouldn't duplicate all that stuff which has
    been stable and working for decades unless it's absolutely necessary.
  - Sometimes using the X11 engine and sometimes our DIB engine for the
    same GDI functions could cause problems for some apps if the
    used algorithms differ slightly (probably more than a Wine/Windows
    discrepancy) - we could use our DIB engine for everything but this
    would eliminate network transparency.

And it would be yet another hack. It would probably work but something 
like this should *really* be solved on X side using SHM and a 
yet-to-be-written extension IMHO.

Comments? Suggestions? :)

Felix