[Mesa-dev] [PATCH 4/4] glsl: Disallow relinking if a program is used by an active XFB object.

[Kenneth Graunke]

On 09/06/2013 04:40 PM, Kenneth Graunke wrote:
> Paused transform feedback objects may refer to a program other than the
> current program.  If any active objects refer to a program, LinkProgram
> must reject the request to relink.
>
> The code to detect this is ugly since _mesa_HashWalk is awkward to use,
> but unfortunately we can't use hash_table_foreach since there's no way
> to get at the underlying struct hash_table (and even then, we'd need to
> handle locking somehow).
>
> Fixes the last subcase of Piglit's new ARB_transform_feedback2
> api-errors test.
>
> Signed-off-by: Kenneth Graunke <kenneth at whitecape.org>

Preemptive comment: Oops.  I meant "mesa: ..." in the commit title. 
Fixed, sorry for the noise.