[Mesa-dev] RFC: Fixing XBMC crash with NV_vdpau_interop

[Christian König]

Hi guys,

recently some XBMC users complained about crashes with the relatively 
new NV_vdpau_interop support.

That turned out to be a problem with how st_atom_texture.c caches the 
sampler view for a texture. Since the texture in question is shared 
between two GLX contexts the pipe object the sampler view was originally 
created for doesn't necessary match the pipe object it is used with.

Now my question is am I missing something or is this case really not 
correctly supported? Where is the check if a texture is used in more 
than one context? The attached patch fixes the issue, but I'm not sure 
if it is the right approach.

Please comment,
Christian.
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