On Wed, 5 Sep 2001, Ian Medland wrote:
> Afternoon,
>
> I'm trying to write a multi-threaded app which uses render extensions.
> Target is XFree 4.0.3 on i810 hardware.
>
> In a single thread it works fine - as soon as I put in XInitThreads() the
> app locks inside XRenderFindFormat (calls XRenderQueryFormats,
> XGetVisualInfo, XInitThreads).
>
> The reason for making it multithreaded is because the app generates a lot
> of timer and internal events so I need to be able to handle these events
> alongside server events. I therefore wanted 1 thread in a XNextEventLoop
> and 1 loop maintaining internal state - performing the drawing.
>
> Is rendering known to be thread-broken? Is there something silly I'm
> forgetting (this is about my forth week in X land!).
>
I'm not sure if anyone has been testing it with threads. This
is the first report that I've seen. I see that there is a missing
SyncHandle() at the end of XRenderQueryFormats(). It should
go after the last UnlockDisplay(). So there's definitely a bug
there. I've just fixed that in CVS. Not sure if that's the only
problem.
Mark.
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