[Mesa-dev] [PATCH v3 3/3] Add a new capabilities for drivers that can't share buffers

Axel Davy axel.davy at ens.fr
Thu Jun 19 07:16:08 PDT 2014

On 15/06/2014 07:49, Giovanni Campagna wrote :
> From: Giovanni Campagna <gcampagna at src.gnome.org>
> The kms-dri swrast driver cannot share buffers using the GEM,
> so it must tell the loader to disable extensions relying on
> that, without disabling the image DRI extension altogheter
> (which would prevent the loader from working at all).
> This requires a new gallium capability (which is queried on
> the pipe_screen and for swrast drivers it's forwared to the
> winsys), and requires a new version of the DRI image extension.
Why does this require a new version of the DRI image extension ?
Could you just set createImageFromName and CreateImageFromNames to NULL, 
and add checks for that (instead of checking the capability ?
It's what is done to check if we can import dma-bufs (check if 
createImageFromFds is not NULL).

Axel Davy

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